Statutory Demands in NSW Construction: How to Issue, Set Aside, or Survive One
Key Takeaways
A creditor’s statutory demand under section 459E of the Corporations Act 2001 (Cth) is not a debt-collection letter. It is an insolvency document. Fail to pay, secure, compound, or file and serve a setting-aside application within 21 days of service and the company is taken to have failed to comply, enlivening a rebuttable presumption of insolvency if a winding-up application is later made.
The debt must be due and payable and at least the statutory minimum of $4,000. Unliquidated claims, contingent claims, and live construction disputes are the wrong raw material for a demand.
Against a judgment founded on a filed adjudication certificate under the Building and Construction Industry Security of Payment Act 1999 (NSW), “the adjudicator got it wrong” is almost never a genuine dispute. The remaining pathway will ordinarily be a genuine, quantified offsetting claim sounding in money, not a relitigation of the adjudication or its valuation conclusions.
The 21-day clock in section 459G is jurisdictional. The High Court in David Grant & Co Pty Ltd v Westpac Banking Corporation [1995] HCA 43; (1995) 184 CLR 265 held there is no power to extend it. Both the originating process and the supporting affidavit must be filed and served within those 21 days; one without the other is not an application. Separately, under section 459G(3), the affidavit filed in that window must support the grounds relied on — a later affidavit cannot introduce a new ground.
A published winding-up application can, and often does under standard-form head contracts, bonding facilities, and downstream subcontracts, trigger insolvency or default clauses long before any liquidator is appointed. Check the contract definitions. Treat the demand as a whole-of-business event from day one.
Introduction
A process server leaves a Form 509H at the registered office on a Friday afternoon. Nobody opens the mail until Tuesday. By the time the contracts administrator realises what it is, nine of the 21 days are already gone. The underlying argument is a familiar one — unpaid invoices, disputed variations, a back-charge for defective trenching — but the document in the envelope is not a payment claim and it is not a statement of claim. It is a creditor’s statutory demand. Miss the next window and the company can be presumed insolvent.
This is the insolvency layer of the New South Wales construction payment stack. It is written for directors, principals, contracts administrators, and subcontractors who have to decide, under time pressure, whether to issue a demand, pay one, withdraw one, or apply to set one aside in the Supreme Court of New South Wales Corporations List. Payment claims, payment schedules, and adjudication sit in the Security of Payment cluster. The payment-claim and schedule guide and the adjudication guide cover those pathways end to end. This page starts where those pathways crystallise into a corporate-insolvency threat.
The underlying statute is Commonwealth. Part 5.4 of the Corporations Act applies to a Sydney civil subcontractor in the same way it applies to a Melbourne manufacturer. The operational reality is local: ASIC registered offices, the NSW Corporations List, Practice Note SC Eq 4, SOP judgments filed under section 25, liquidated damages under AS 4000 special conditions, and head-contract clauses that treat a published winding-up application as an insolvency event. Get the classification wrong — treating a demand as “just another invoice,” or issuing one on a live variation fight — and the 21-day advantage is already gone.
Quick reference: the clocks that decide the file
Every critical step after service is measured in calendar days, not business days, and missing one is usually fatal. Use the following as an at-a-glance map. Always confirm the exact dates against the method of service and the documents actually filed.
Step | Who acts | The deadline |
Pay, secure, or compound for the debt (s 459E / s 459F) | Debtor company | 21 days after the demand is served |
File and serve an application to set the demand aside, with supporting affidavit (s 459G) | Debtor company | The same 21 days. Both filing and service are jurisdictional |
Automatic extension of time to comply if a competent s 459G application is made (s 459F(2)(a)) | Automatic | Until 7 days after the application is determined, or any other period the court specifies |
Winding-up application relying on the s 459C presumption | Creditor | Within 3 months after the failure to comply |
Determination of the winding-up application (s 459R) | Court / creditor | Generally within 6 months of filing, unless extended |
Leave to oppose winding up on a ground that could have been run at s 459G (s 459S) | Debtor company | Only with leave, and only if the ground is material to proving solvency |
The takeaway: these windows are short, strict, and unforgiving. If a Form 509H has landed, or you are about to issue one, the time to act is now, not once the clock has run down.
Key cases at a glance
The authorities that decide most construction statutory-demand disputes, and what each stands for:
David Grant & Co Pty Ltd v Westpac Banking Corporation [1995] HCA 43; (1995) 184 CLR 265 — the 21-day limit in section 459G is jurisdictional and cannot be extended by any court.
Eyota Pty Ltd v Hanave Pty Ltd (1994) 12 ACSR 785 — the genuine-dispute test: a plausible contention requiring investigation, akin to a serious question to be tried.
Spencer Constructions Pty Ltd v G & M Aldridge Pty Ltd [1997] FCA 681; (1997) 76 FCR 452 — to establish a genuine dispute, the dispute must be bona fide and truly exist in fact, and the grounds for alleging its existence must be real and not spurious, hypothetical, illusory, or misconceived.
Britten-Norman Pty Ltd v Analysis & Technology Australia Pty Ltd [2013] NSWCA 344 — although decided in the context of an offsetting claim, the Court confirmed that evidence in a statutory-demand application need not be in final-hearing admissible form, but must rise above mere assertion.
Sceam Construction Pty Ltd v Clyne [2021] VSCA 270 — section 459G(3) requires the affidavit filed within the statutory period to support the application by identifying the genuine dispute, offsetting claim, or other ground relied upon; later affidavits may supplement an existing ground but cannot introduce a new one. The Court preferred the statutory “supports” language to older “Graywinter” / “fair notice” shorthand.
In the matter of Douglas Aerospace Pty Ltd [2015] NSWSC 167; (2015) 294 FLR 186 — a judgment founded on a filed SOP adjudication certificate is generally not open to a genuine-dispute argument, but a genuine monetary offsetting claim may still be relied upon under section 459H(1)(b).
CM Luxury Pty Ltd v Menzies Civil Australia Pty Ltd [2023] WASC 340 — (WA) — the Supreme Court of Western Australia held that a statutory demand may be set aside under section 459J where the demand and verifying affidavit inaccurately describe the nature or legal basis of the debt.
Grounded Construction Group Pty Ltd v KW Civil & Construction Pty Ltd [2025] WASC 307 — the Supreme Court of Western Australia set aside a statutory demand under section 459J(1)(b) where the creditor maintained parallel recovery proceedings and a statutory demand in respect of substantially overlapping claims. The Court held that the coexistence of proceedings pursuing payment and a statutory demand pursuing an insolvency outcome was an abuse of process. The Court rejected a separate argument that the creditor’s knowledge of the debtor’s solvency, of itself, established abuse.
Re C88 Project Pty Ltd [2022] NSWSC 126 — omitting the prescribed notes did not cause substantial injustice, and clearly-stated separate interest did not invalidate the demand.
What a statutory demand is, and when it is the right tool
A statutory demand wears the costume of a debt-collection letter, but it does something far more serious: it converts an unpaid construction sum into a presumption that the company cannot pay its debts. Used on a clean, due and payable debt, it is one of the most powerful instruments in the Corporations Act. Used on a live variation fight, it is how a creditor ends up paying indemnity costs. The first task is to know which situation you are in.
What Part 5.4 actually does — and what it does not decide
A statutory demand is a creditor’s formal written request, served on a company, requiring it to pay a due and payable debt of at least the statutory minimum, or to secure or compound for that debt to the creditor’s reasonable satisfaction, within 21 days after service. The current statutory minimum is $4,000. That figure has applied since 1 July 2021, when the former $2,000 threshold was permanently increased.
The demand does not determine who is right about the underlying contract. It does not value defective work, decide an extension of time, or replace a superintendent’s certificate. What it does is create a forensic shortcut. If the company neither complies nor has the demand set aside, section 459C requires the court, on a later winding-up application made within three months of that failure, to presume the company is insolvent. That presumption is rebuttable — the company can still try to prove it is solvent in fact — but the commercial damage of a published application often lands first.
Part 5.4 is Commonwealth law. It applies to NSW companies nationally. The practical forum for most construction demands issued or challenged in this State is the Supreme Court of New South Wales Corporations List, case-managed under Practice Note SC Eq 4 (reissued 10 October 2024, commenced 17 October 2024), or the Federal Court sitting in Sydney. The Federal Court’s Corporations Information Sheet 1 is the registry-level map of the winding-up pathway that follows non-compliance.
What the demand is not is a finding that the company is insolvent. Non-compliance creates a presumption. The presumption can be displaced. But directors who treat the document as a negotiating tactic, while aged payables, tax, and retentions tell a different story, are already in section 588G of the Corporations Act territory. ASIC’s Regulatory Guide 217 is the directors’ handbook for that overlay.
Demand vs statement of claim vs SOPA vs winding-up summons
These four documents are constantly confused on site. They do different jobs, they run on different clocks, and using the wrong one is how construction files lose both the money and the costs.
Instrument | What it does | Clock | What the other side can do | When it is the right tool |
Payment claim (SOP Act) | Starts the statutory progress-payment pathway | Business days under ss 14, 17, 20 of the SOP Act | Serve a payment schedule; later adjudicate | Work done or related goods/services supplied under a construction contract |
Statement of claim | Starts ordinary debt recovery | Ordinary court timetables | Defend on the merits, particulars, interlocutory steps | A disputed or unliquidated construction claim that needs a trial |
Statutory demand (s 459E) | Tests solvency on a due and payable debt | 21 calendar days from service | Pay, secure, compound, or apply under s 459G | A liquidated, presently owing debt that is not genuinely disputed |
Winding-up summons (s 459P) | Seeks a liquidation order, often on the s 459C presumption | 3-month window after non-compliance | Prove solvency; seek s 459S leave; appoint an administrator | After a demand has expired without compliance or a competent set-aside |
A payment claim under the SOP Act starts the statutory progress-payment pathway. The respondent’s weapon is a payment schedule. The claimant’s weapon is adjudication. That pathway is covered in Navigating Payment Claims and Schedules in NSW and Adjudication in NSW Explained. It is not this page.
A statement of claim starts ordinary debt recovery. The defendant can defend on the merits, seek particulars, and take the ordinary interlocutory course. There is no 21-day insolvency fuse, and there is no presumption of insolvency if the defendant simply defends.
A statutory demand is an insolvency document. It is only fit for a debt that is presently due, liquidated, and not the subject of a genuine dispute. Used on a live variation fight, it is an own-goal.
A winding-up summons is the next step after non-compliance. It is not a second chance to argue the invoice. By then, the company is defending solvency, not the original claim, and section 459S of the Corporations Act will usually stop it from running the dispute it could have run in the first 21 days.
When to issue, and the cases where issuing is an own-goal
Issue a demand when the debt is undisputed, due and payable, above $4,000, and the commercial objective is to test solvency — not to bludgeon a contractor into abandoning a real dispute.
The construction files that support a demand look like this:
an unpaid invoice the debtor has certified, scheduled, or otherwise admitted;
a judgment, including an adjudication certificate filed as a judgment under section 25 of the SOP Act;
a signed final account with a residual balance and no live cross-claim;
a debt that has been assigned, with notice given, and no dispute about the underlying sum.
Do not issue a demand when:
the variation, EOT, or defect argument is live and documented;
the “debt” is unliquidated — quantum meruit without an agreed sum, unquantified delay damages, a wish-list of back-charges;
you are already suing for the same sum in ordinary proceedings and want the demand as extra pressure;
the debtor is plainly solvent and will spend the next 21 days assembling a setting-aside case that will attract indemnity costs;
the amount, after any genuine offset, may fall under $4,000.
Construction cashflow disputes are usually genuine disputes until they have been converted into a judgment, an adjudication certificate filed as a judgment, or a clear admitted invoice. If the right tool is still a payment claim, use the SOP Act. If the right tool is still a contract claim, issue a statement of claim. The demand is the last instrument, not the first.
Worked example — issuing on a live variation. A formwork subcontractor is owed $186,000 on three progress claims. The head contractor has paid $110,000, withheld $76,000, and served payment schedules particularising defective kickers, a delay back-charge, and an unapproved variation. The subcontractor’s solicitor issues a statutory demand for $76,000, verifying “no genuine dispute.” The head contractor files a s 459G application attaching the schedules, site instructions, and a $90,000 rectification quote. The demand is set aside. Costs follow, often on an indemnity basis, because the verifying affidavit asserted the absence of a dispute the job file made obvious. The subcontractor still has a real claim. It just used the wrong document.
Who can issue, who can be served, and the $4,000 floor
Any person owed a due and payable debt of at least $4,000 by a company may serve a demand, including an assignee. Section 459E(4) of the Corporations Act says so expressly. The debtor must be a company. Individuals, partnerships, and sole traders are outside this regime; personal insolvency uses a different instrument, the bankruptcy notice under the Bankruptcy Act 1966 (Cth). Serving a Part 5.4 demand on a sole trader builder is a nullity.
The demand is served on the company, not on the project. Section 109X of the Corporations Act permits service by leaving the document at, or posting it to, the registered office, or by delivering a copy personally to a director who resides in Australia. Service on a site office, a project email, or the contracts administrator’s inbox is not, by itself, section 109X service. That distinction decides more construction demand cases than the merits of the invoice.
Related-party, director, and intra-group demands are legally possible and commercially explosive. They are read closely for abuse of process. So are demands issued to keep a distressed subcontractor quiet while a head contractor continues to trade. A demand can be issued by a creditor who is itself in financial trouble; solvency of the creditor is not a setting-aside ground. It is, however, a reason to think about unfair preferences before electing to pay.
If the classification is not obvious — trustee companies, joint-venture vehicles, companies as trustee for a unit trust, or a group in which the wrong ACN was named on the subcontract — this is the point to get construction law advice before anyone signs Form 509H.
The debt that can sit in a demand
The Form 509H is only as strong as the sum it recites. Construction files are full of amounts that feel like debts — uncertified extras, delay heads, defect back-charges, retention still sitting in the account — and almost none of those can lawfully occupy a statutory demand until they have crystallised. If the figure cannot be stated as a present, liquidated, due and payable obligation, stop. The rest of this guide will not save a demand built on the wrong raw material.
Due and payable, liquidated, and currently owed
Section 459E permits a demand relating to a single debt, or two or more debts, that the company owes, that are due and payable, and that total at least the statutory minimum. “Due and payable” means presently owing. Not contingent. Not prospective. Not “we think you will owe this when the final account is done.”
A liquidated sum can be demanded. An unliquidated damages claim cannot, until it has been converted into a debt — by agreement, by judgment, or by a mechanism that actually produces a presently owing amount. That is why so many construction demands fail. Delay damages, defect rectification, and “back-charges we have not yet scoped” are claims. They are not yet debts.
The distinction is practical, not academic:
Liquidated, and usually capable of founding a demand: a certified progress amount; an admitted invoice; a judgment; an adjudication certificate filed as a judgment; a signed variation at an agreed price that has fallen due.
Unliquidated, and usually not: quantum meruit for extra work with no agreed rate; unquantified delay cost; a defects claim sitting at “we will get a quote”; a set-off the principal has not calculated; a claim for damages for repudiation.
A running account with credits, retentions, and back-charges moving both ways is a particular trap. If the relationship is a continuous trading account, the “debt” may not be a stable, due and payable sum. Retention that has not yet fallen due for release is not a debt. A bank guarantee that has not been called is not a debt. An amount certified “subject to further assessment of defects” is often still a dispute.
Judgment debts, invoices, assigned debts, interest and GST
A judgment debt is the cleanest foundation. No supporting affidavit is required under section 459E(3) of the Corporations Act if the debt, or each of the debts, is a judgment debt. An adjudication certificate filed as a judgment under section 25 of the SOP Act sits in this category. That is why the SOP-to-demand pathway is so heavily used in NSW construction: the statute has already converted an interim valuation into a judgment debt.
Ordinary unpaid invoices can found a demand, but they must be accompanied by a verifying affidavit, and they must not be the subject of a genuine dispute. The affidavit is not a rubber stamp. It is the creditor’s sworn statement that the sum is due and payable and that there is no genuine dispute. Swear that against a file full of payment schedules and you have handed the debtor the section 459J of the Corporations Act case.
Assigned debts are expressly permitted by section 459E(4). Notice of assignment still matters commercially and can matter to whether the company knows who to pay. A demand by an assignee who has not given notice, served on a company that has already paid the original creditor, is a dispute waiting to happen.
Interest and GST can be included where they are presently due. They should be scheduled separately from principal. Re C88 Project Pty Ltd [2022] NSWSC 126 is the NSW illustration. A statutory demand followed a judgment for commission together with an associated order for interest. The debtor argued that omitting the prescribed notes, and including disputed judgment interest, invalidated the demand. The Court held that omitting the notes did not cause substantial injustice where the company was still directed to the legislation, and that a separately identified interest component, with its calculation explained in the accompanying affidavit, did not justify setting the demand aside or amount to a subversion of Part 5.4. Importantly, the Court did not find it necessary to determine whether the disputed additional day of interest was in fact payable. The application was dismissed and the statutory demand remained on foot. The lesson is not that notes and interest do not matter. The lesson is that a demand which identifies the principal, states the interest separately, and explains the calculation in the affidavit will usually survive; a lump sum that conceals unexplained interest will often be varied or set aside.
Guarantees, trustee debts, related-party debts, and running accounts
A demand served on the company that actually owes the debt is the demand that works. A demand served on the wrong entity in a group, on a trustee without identifying the capacity, or on a company that merely guaranteed someone else’s obligation, is a defect waiting for a setting-aside application.
Construction groups make this mistake constantly. The subcontract is with “Eastern Civil Pty Ltd as trustee for the Eastern Civil Trust.” The demand names “Eastern Civil Pty Ltd.” Or the work was done for a special-purpose vehicle, and the demand is served on the parent because that is the name on the site sign. Or a director’s personal guarantee is treated as if it were a company debt. None of those documents does what the creditor thinks it does.
Related-party debts are not prohibited. They are scrutinised. A demand by a related entity, issued the week a head contractor is trying to keep a project out of administration, will be read for improper purpose. Intra-group running accounts, management fees, and historically undocumented “loans” are rarely the clean due-and-payable debts Part 5.4 was built for.
What cannot be demanded
Do not put these in a Form 509H:
unliquidated damages;
contingent or future amounts;
disputed variations that have not been certified, agreed, or adjudicated into a debt;
amounts below $4,000 after any genuine offset;
debts owed by someone other than the company named;
claims that exist only as a bargaining position on a final account;
retention that has not yet fallen due;
the face value of a bank guarantee that has not been called.
If the amount cannot be stated as a present debt in a schedule a director can check against the job file, it is not ready. The disciplined move is to convert the claim into a debt first — by adjudication, by judgment, or by agreement — and only then reach for Form 509H.
Drafting Form 509H and the supporting affidavit
Most construction demands that fail do not fail because the money was never owed. They fail because the form, the schedule, or the affidavit described the wrong debt, the wrong entity, or the wrong legal basis. A Corporations List judge reads the demand and the verifying affidavit side by side. If they do not match, the 21-day advantage is already gone.
Prescribed form, naming, schedule of debts, and place for payment
Section 459E(2) of the Corporations Act requires the demand to be in writing, in the prescribed form, signed by or on behalf of the creditor, specifying the debt and its amount (or the total of multiple debts), and requiring payment, security, or composition within the statutory period after service. The prescribed form is Form 509H in Schedule 2 to the Corporations Regulations 2001 (Cth).
The demand must correctly identify the creditor and the debtor company, including the ACN and the registered office. Get the ACN wrong and you may have served a different company. Get the creditor’s name wrong — trading name instead of the company that is actually owed the money, or the old name after a change — and the debtor has a defect point.
The demand should specify a place in Australia where the debt can be paid. An overseas bank account, an email-only payment instruction, or silence on the place for payment is a recognised defect risk and a common basis on which demands are attacked under section 459J.
Notes in the prescribed form should be retained. Re C88 Project held that omitting the notes did not cause substantial injustice in that case, because the company was still directed to the legislation. That is not a drafting licence. Leave the notes in. They exist to tell the debtor what the 21-day clock means. Removing them invites a s 459J argument you do not need.
Describe the debt the way the debtor will recognise it: invoice numbers, payment-claim references, judgment details, or the adjudication certificate and filing date. A narrative about “monies owing for civil works at the western precinct” is how genuine-dispute affidavits write themselves. A schedule that lists Invoice 1042 dated 12 March 2026 for $84,220 (ex GST), plus GST of $8,422, plus interest calculated at the contract rate from 11 April 2026, is a demand a contracts administrator can check.
When the affidavit is required and what it must verify
Unless the debt is a judgment debt, section 459E(3) requires an accompanying affidavit that verifies the debt is due and payable and that complies with the rules of court. The Federal Court’s corporations guide is blunt: the verifying affidavit must not pre-date the demand. Use the prescribed Form 7.
The deponent must be able to verify the nature of the debt from knowledge, not from a hope that the accounts team is right. A solicitor who has never seen the job file should not be the deponent. A director who can speak to the invoices, the contract, and the absence of a genuine dispute can. ASIC extracts, the contract, invoices, payment schedules, and any judgment or adjudication certificate belong in the exhibit.
The affidavit’s “no genuine dispute” statement is a statement of belief. It has to be available on the brief. If the job file contains payment schedules, show-cause notices, defect lists, or without-prejudice correspondence that puts the sum in issue, the deponent cannot honestly swear the formula. That is the point at which the right instrument is a statement of claim, not a demand.
Correspondence between demand and affidavit
The demand and the affidavit must describe the same debt, on the same legal basis, in the same amount. If the demand says “contract debt” and the affidavit is actually verifying a restitutionary quantum meruit, the demand is misdescribed.
CM Luxury Pty Ltd v Menzies Civil Australia Pty Ltd [2023] WASC 340 is the construction illustration. The creditor's statutory demand and verifying affidavit characterised the debt as a contractual debt arising under a written contract. The creditor later accepted that no signed contract existed and instead contended that the debt arose on a quantum meruit. The Supreme Court of Western Australia held that the demand and affidavit were materially inaccurate and misleading as to the nature and legal basis of the debt. That misdescription constituted both a defect causing substantial injustice under s 459J(1)(a) and “some other reason” under s 459J(1)(b) to set the demand aside. The Court also held that the supporting affidavit failed properly to verify the quantum meruit claim because it did not address the reasonableness of the amount claimed.
Although CM Luxury was decided by the Supreme Court of Western Australia, the decision concerned the operation of the Commonwealth statutory-demand regime in Part 5.4 of the Corporations Act. NSW courts similarly require consistency between the statutory demand, the verifying affidavit, and the legal basis of the debt said to be due and payable. If you are not sure whether the sum is a certified progress amount, a judgment, or a reasonable-value claim, you are not ready to swear the affidavit. Construction files generate this problem whenever extra work is done on a handshake, a purchase order is treated as a subcontract, or a head contractor demands payment on a quantum meruit after the written instrument is found to be unenforceable.
The drafting defects that actually kill demands
Minor typos rarely suffice. Section 459J(1)(a) requires a defect and substantial injustice. A misspelled street name, a rounding error in interest, or a missing full stop in the notes will not usually get a demand set aside.
What does kill demands in construction files:
wrong company, wrong ACN, or the trustee named in the wrong capacity;
a lump sum that conceals disputed interest, extras, or a running account;
a demand that fails to specify a place for payment in Australia;
an affidavit that pre-dates the demand, does not verify due and payable, or asserts “no genuine dispute” when the job file is full of one;
a cause of action in the affidavit that does not match the demand;
a schedule that cannot be reconciled with the invoices or the judgment;
bundling a judgment debt with a separate unliquidated claim in a way that infects the whole demand.
Do not build the whole application, or the whole defence, on a technicality. Use the defect ground where it is real, and put the genuine dispute or offsetting claim in the same affidavit. Draft as if a Corporations List judge will read the demand and the affidavit side by side. They will.
Service — where demands most often die
The 21-day clock does not start when the Form 509H is signed, and it does not start when someone on site forwards a PDF. It starts when the demand is served in a way the Corporations Act recognises. Construction companies lose (and win) more demand cases on registered-office and postage evidence than on the merits of the invoice. Get service wrong and there is no demand to enforce. Get the proof of service wrong and there is no winding-up application later.
s 109X: post, registered office, and personal service on a director
Section 109X is the service code for companies. A document may be served by leaving it at, or posting it to, the company’s registered office, or by delivering a copy personally to a director who resides in Australia. If a liquidator, administrator, or restructuring practitioner has been appointed, serve at the address in the most recent ASIC notice.
Print a current ASIC extract before you serve. The registered office on last year’s subcontract is not evidence of today’s registered office. Construction groups change registered offices, use virtual offices, and list accountants’ premises. Serving last year’s address is how a creditor later discovers the 21 days never started — or, from the other side, how a debtor discovers they did.
Leaving the demand at the registered office means leaving it at that place. It does not mean handing it to a site supervisor, sliding it under the shed door, or giving it to the receptionist at a project office that is not the registered office. Personal service on a director is effective, but only on a director who resides in Australia, and only if the person served is in fact a director. Serving a project manager who “runs the company” is not section 109X service.
Effective date, proof of posting, unattended and virtual offices
The 21 days run from service, not from the date on the Form 509H. Where the demand is left at the registered office, time generally runs from delivery. Where it is posted, section 29 of the Acts Interpretation Act 1901 (Cth) requires proof that the envelope was correctly addressed, prepaid, and posted, and section 160 of the Evidence Act 1995 (Cth) presumes a prepaid postal article addressed to a person in Australia was received on the seventh working day after posting unless evidence sufficient to raise a doubt is adduced.
That proof is where creditors lose. It is not enough that a solicitor recalls “we mailed it.” The court wants the envelope, the address as it appeared, the postage, and evidence the envelope actually contained the demand and the affidavit. A mail-room affidavit that cannot identify the contents of a particular envelope is how winding-up applications collapse six months later.
Unattended, virtual, and letterbox registered offices are common in construction groups. Leaving documents at a permanently unattended office can still be good service if it is the registered office, but the affidavit of service has to be exact about what was done: the time, the place, whether anyone was present, where the documents were left, and photographs if they exist. Debtors who use a virtual office cannot later pretend the registered office was somewhere else. Creditors who serve a virtual office still have to prove they served that address.
Christmas shutdowns, site close-downs, and “nobody was at the accountant’s office” do not stop time running. The registered office is the address the company nominated. The 21 days run from service at that address, not from the day a director happens to open the mail.
Email, interstate service, and foreign companies
Warning: Do not assume that emailing a Form 509H is effective service, or that it starts the 21-day clock. Section 109X remains the clearest method. Electronic service can be effective in some cases under Part 1.2AA of the Corporations Act, but only if the statutory conditions are met and you can prove sending, receipt, and the recipient address. An informal PDF to a project inbox is not enough.
Do not serve a demand by email and assume the 21 days have started. Section 109X is permissive, not exclusive: a document may be served by leaving it at, or posting it to, the registered office, or by personal delivery to an Australian-resident director. Other methods can also be effective. Since 15 September 2023, Part 1.2AA of the Corporations Act (including sections 110C and 110D) has provided a technology-neutral framework for sending documents under Chapters 5 to 5D, which includes statutory demands. Sections 105A and 105B deal with when and where electronic communications are taken to be sent and received.
That does not make every email good service. A PDF sent only to a project address or contracts-administrator inbox will often fail. Effective electronic service depends on using an appropriate address, complying with Part 1.2AA, and being able to prove the communication was sent and received. If service is contested, the evidentiary burden is heavier than for registered-office service under section 109X. If you need the clock to start cleanly, use a section 109X method — and treat email, if used at all, as a supplement, not the sole foundation.
Interstate service of the demand itself still turns on section 109X if the debtor is an Australian company: post or delivery to the registered office, wherever in Australia that office is, or personal service on an Australian-resident director. Once you are in s 459G territory — serving the originating process — follow the Corporations Act, the Corporations Rules, and the Service and Execution of Process Act 1992 (Cth) where they apply.
Foreign companies and Part 5.7 bodies are a specialist problem. Do not improvise service on an overseas parent, a Singapore holding company, or a New Zealand contractor that happens to have a site in Western Sydney. If the debtor is not an Australian company, the demand pathway may not be the pathway you think it is.
Affidavit of service and the evidence the court will actually want
The affidavit of service is not a formality. It is the document that starts the 21-day clock you will later rely on for winding up.
Exhibit:
the current ASIC extract used to identify the registered office;
the demand and the supporting affidavit as served;
the envelope, the address as written, and proof of prepaid postage or courier;
tracking, delivery confirmation, or photographs of the documents at the registered office;
the identity of any director personally served, and how that person was identified.
If service is later contested, this affidavit is the case. A winding-up applicant who cannot prove service of the demand cannot rely on the s 459C presumption. A debtor who can break service does not need a genuine dispute. That is why construction files should treat the process server’s paperwork with the same seriousness as the subcontract.
The 21-day clock: pay, secure, withdraw, or apply
Once service is effective, the company has four lawful responses and almost no time. Pay the debt. Secure or compound for it to the creditor’s reasonable satisfaction. Get the demand withdrawn in writing. Or file and serve a setting-aside application. A holding letter, a without-prejudice meeting, and a payment schedule are none of those things. The High Court has already decided there is no fifth option and no extra week.
David Grant and why the time limit is rigid
Section 459G of the Corporations Act provides that an application to set aside a demand may only be made within 21 days after the demand is served. An application is made in accordance with the section only if, within those 21 days, an affidavit supporting the application is filed with the court and a copy of the application, and a copy of the supporting affidavit, are served on the person who served the demand.
The High Court in David Grant & Co Pty Ltd v Westpac Banking Corporation [1995] HCA 43; (1995) 184 CLR 265 held that this time limit is strict. The court has no jurisdiction to extend it. Gummow J explained that Part 5.4 establishes a legislative scheme for the prompt resolution of insolvency questions and that the 21-day requirement is an essential condition of the statutory right created by section 459G. The Federal Court’s corporations information sheet says the same thing in registry language: no extensions, no dispensation.
That is the whole of the trap. A director who is overseas. A registered office at an accountant who is on leave. A Christmas shutdown. A belief that “we are talking to them.” None of those facts gives the court power to accept an application on day 22. The application that is filed on day 21 and served on day 22 is not an application. The application that is served on day 21 without the supporting affidavit is not an application.
Critical deadline: The 21-day limit in section 459G cannot be extended by any court, for any reason. You must file and serve both the originating process and the supporting affidavit within 21 days of service. Day 22 is too late, full stop.
What “comply” means, and how the period is counted
Compliance means paying the amount demanded, or securing or compounding for it to the creditor’s reasonable satisfaction, within 21 days after service. A without-prejudice offer is not compliance. A holding letter is not compliance. A promise to “sort it out after the next progress claim” is not compliance. Serving a payment schedule, issuing a show-cause notice, or starting ordinary proceedings is not compliance.
Count from the effective date of service. Do not assume weekends or public holidays extend section 459G — they do not, unless they affect the deemed date of postal service under the Evidence Act working-day rule. Do not assume the 21 days start when someone at the site office forwarded the PDF. If the demand was posted, the deemed service date is the one that matters unless you can prove earlier or later receipt.
If a setting-aside application is properly made, section 459F of the Corporations Act automatically extends time for compliance until seven days after the application is finally determined, or until the end of any other period the court specifies. That extension is the reason a competent s 459G filing is worth so much. It stops the presumption arising while the dispute is heard. If the application is dismissed, the company usually has those further seven days to pay, unless the court has specified another period. Do not assume you have them without reading the order.
Debtor triage in the first 48 hours
On receipt, the file should move in a fixed sequence:
Photograph the envelope, the demand, the affidavit, and any attachments. Diary the apparent service date and day 21. Do not throw away the envelope.
Pull a current ASIC extract and confirm the document landed at the registered office, not a project address. If service looks defective, that is a ground — but it is not a reason to miss day 21 while you think about it.
Identify the debt against the job file: invoice, payment claim, adjudication certificate, judgment. Classify it. A SOP judgment is a different case from an ordinary invoice.
Decide, in writing, among four options: pay; negotiate a written withdrawal; secure or compound; or apply under section 459G.
If applying, start the affidavit and the quantum evidence immediately. Commission quotes, pull the subcontract, gather payment schedules, and get the LD calculation on paper. The last 48 hours is how section 459G(3) affidavit problems are born. By then, companies are often trying to formulate grounds that should already have been identified in the affidavit filed within the statutory period.
A long letter to the creditor is not an application. Neither is a payment schedule, a show-cause notice, or a without-prejudice meeting. Those documents can support a later affidavit. They do not stop the clock.
If the demand is based on an unpaid SOP determination, the 48-hour question is not “was the adjudicator wrong?” It is “do we have a genuine, quantified offsetting claim, a defect, or an abuse point — and can we prove it by day 21?” That pathway is unpacked in Can You Defeat a SOP Act Statutory Demand with Offsetting Claims in NSW.
Debtor decision tree — a Form 509H has been served. Work down the branches:
Is the debtor a company? If it is a sole trader or partnership, the demand is a nullity — Part 5.4 does not apply. If it is a company, continue.
Was it served under section 109X (registered office or personal service on an Australian-resident director)? If service looks defective, that is a ground — but do not gamble the file on it. Continue as if the clock is running.
Is the debt a judgment or a filed adjudication certificate? If yes, do not argue the merits — go straight to “is there a quantified offsetting claim?” If no, continue.
Is the debt genuinely disputed, with a contemporaneous document trail? If yes, that is a section 459H(1)(a) genuine-dispute case — put it in the day-21 affidavit. If no, continue.
Is there a genuine, quantified cross-claim (liquidated damages, priced rectification, another cross-demand)? If yes, that is a section 459H(1)(b) offsetting claim — quantify it now. If no offset and no dispute, the realistic options narrow to pay, secure, compound, or negotiate a written withdrawal before day 21.
Every branch ends at the same fixed deadline: file and serve the originating process and supporting affidavit within 21 days.
Withdrawal, paying because it is cheaper than winning, and the director-duty overlay
A creditor can withdraw a demand. Get it in writing, and get it before day 21 if that is the plan. An oral “we’ll put it on hold” is worthless. If the withdrawal arrives after you have already filed, the application can still be dismissed by consent, but you needed the filing to protect the company.
Paying a demand you could have set aside is sometimes the rational commercial decision. Weigh four costs against each other before deciding. First, the legal cost of a contested section 459G application in the Corporations List — a real, and often five-figure, spend once affidavits, quantum evidence, and a hearing are in play. Second, the cost of the debt itself. Third, the harder-to-price cost of a published winding-up application: a principal calling an insolvency default under a GC21 or AS 4000 special condition, a bank reviewing a bonding facility, an insurer reassessing cover, and cross-defaults on other projects — commercial damage that can dwarf the demanded sum. Fourth, the preference risk if the company is later wound up. Get an actual estimate of the application cost from your lawyer, and an honest read on solvency, before treating payment as the cheap option. Paying can also be an admission of a debt you did not owe, and it can later be attacked as an unfair preference. That is a commercial and directors’-duties decision, not an automatic yes.
Directors cannot treat the demand as “just another invoice.” Section 588G of the Corporations Act (duty to prevent insolvent trading) and section 588GA (safe harbour) sit in the background. If the company cannot pay and cannot honestly swear a solvency case, the demand is information about the company’s position, not merely a tactic by a subcontractor. Safe harbour under section 588GA(1) requires a documented course of action reasonably likely to lead to a better outcome for the company than immediate administration or liquidation. A director who wishes to rely on that protection bears the evidential burden under section 588GA(3). A director who ignores a demand, keeps trading, and hopes the creditor will go away is not in safe harbour.
Where the company’s position is tight, this is also the moment to speak with a commercial lawyer in New South Wales about restructuring options, and not only about the 21-day application.
Set aside a statutory demand: genuine dispute or offsetting claim
Section 459H of the Corporations Act is the construction debtor’s real battlefield. The court is not going to try the subcontract. It is going to ask whether there is a plausible contention requiring investigation, or a genuine quantified cross-claim that brings the substantiated amount under $4,000. That is a lower forensic bar than a final hearing, and a much higher bar than a director saying the work was no good. The distinction decides whether the demand survives.
The genuine dispute test for a statutory demand — plausible contention, not a mini-trial
Section 459H(1)(a) of the Corporations Act applies where the court is satisfied there is a genuine dispute about the existence or amount of a debt to which the demand relates. The classic formulation is Eyota Pty Ltd v Hanave Pty Ltd (1994) 12 ACSR 785, where McLelland CJ in Eq held that a “genuine dispute” connotes a plausible contention requiring investigation. McLelland CJ in Eq described the test as raising much the same sort of considerations as the serious-question-to-be-tried criterion applied in interlocutory injunction proceedings — something more than a mere assertion, but well short of proving the defence at trial. Spencer Constructions Pty Ltd v G & M Aldridge Pty Ltd [1997] FCA 681; (1997) 76 FCR 452 adds that, to qualify as genuine, the dispute must be bona fide and truly exist in fact, and the grounds for alleging its existence must be real and not spurious, hypothetical, illusory, or misconceived.
The court does not try the construction case or resolve the parties’ competing contentions. Its task is confined to determining whether there is a real dispute requiring investigation. Contract formation, unsigned variations, defective works, competing payment-claim calculations, and a live argument about whether an amount is certified are the ordinary genuine-dispute terrain. Although Britten-Norman Pty Ltd v Analysis & Technology Australia Pty Ltd [2013] NSWCA 344 was an offsetting-claim case, the New South Wales Court of Appeal confirmed more generally that evidence in a statutory-demand application need not be in final-hearing admissible form and need not conclusively prove the claim advanced. Consistently with Eyota, however, the court is not required to accept uncritically every affidavit assertion as establishing a genuine dispute or offsetting claim. The evidence must rise above mere assertion and demonstrate a plausible contention requiring investigation. The court may draw reasonable inferences from the material when assessing whether such a contention exists, but it does not conduct a mini-trial.
What is not a genuine dispute:
a bare denial (“we do not owe this”);
“we were unhappy with the work,” with no documents;
a re-argument of an adjudication that has already become a judgment;
a complaint about cashflow, or a request for more time;
an argument that the company is solvent (that is a winding-up defence, not a s 459H defence);
a dispute invented after the demand, with no contemporaneous trail.
Worked example — genuine dispute on an invoice demand. A mechanical subcontractor serves a demand for $142,000 on unpaid invoices. The head contractor’s s 459G affidavit exhibits the subcontract, three payment schedules served on time, a superintendent’s direction rejecting the variation that makes up $96,000 of the claim, and emails in which the subcontractor itself described the extra work as “still to be agreed.” That is a plausible contention requiring investigation. The court will not decide whether the variation was directed. It will set the demand aside, or vary it down to any undisputed residue, and send the parties back to ordinary recovery or adjudication.
Offsetting claims, varying the demand, and falling below the statutory minimum
Section 459H(1)(b) of the Corporations Act applies where the company has an offsetting claim: a genuine claim against the respondent by way of counterclaim, set-off, or cross-demand, even if it does not arise out of the same transaction or circumstance as the debt. Section 459H(5) says so. The claim must be genuine, and it must be given an amount. The court then calculates a “substantiated amount”: the admitted total of the demanded debts, minus the offsetting total. If that figure is less than the statutory minimum of $4,000, the demand must be set aside. If it remains at or above $4,000, the court may vary the demand down to the substantiated amount under section 459H(4).
This is the construction debtor’s primary weapon against a SOP judgment. You generally cannot dispute the judgment by contending that the adjudicator reached the wrong result. What remains available is a genuine monetary cross-claim, such as liquidated damages, quantified defect-rectification costs, restitution of amounts already overpaid, or another genuine cross-demand that is capable of valuation in money terms. The offsetting claim must be genuine and given a number the court can test. “The trenching was defective and will cost a great deal” is not an offsetting claim. A survey, a quote, and a contractual LD calculation might be.
The offsetting claim must be the company’s claim against the creditor. A claim against a different company in the creditor’s group does not count. A director’s personal claim does not count. An unquantified repudiation claim does not count until someone puts a dollar figure on it that is not a guess.
Variation of the demand is an under-used outcome. If $80,000 is demanded, $50,000 is genuinely offset, and $30,000 is admitted, the court can vary the demand to $30,000 rather than set it aside entirely. The company then has to deal with the varied demand. That is still a better result than the original $80,000, and a worse result than a full set-aside. Do not run an offsetting claim as if the only available order is all or nothing.
Evidence that works, and arguments the court will not try
Evidence that works at the s 459G stage is contemporaneous and specific:
the subcontract, special conditions, and any formal variations;
payment claims and payment schedules;
notices of delay, EOT claims, and the contractual LD clause with the notices it requires;
defect lists, NCRs, photographs, and third-party quotes;
short expert opinions dated inside the 21 days;
the adjudication determination, certificate, and judgment, if that is the foundation of the demand;
any parallel proceedings, so the court can see overlap.
Evidence the court will not try: a full defects hearing; a re-run of the adjudication; a solvency case dressed up as a dispute; an unquantified set-off; a global delay claim with no critical-path analysis and no number. You do not need trial-standard proof. You do need more than a director’s grievance.
Commission quantum evidence in week one. Two or three trade quotes on the same defect scope will carry more weight on day 21 than a polished expert report that arrives on day 22. Section 459G(3), as explained in Sceam Construction Pty Ltd v Clyne [2021] VSCA 270, requires the affidavit filed within the statutory period to identify the genuine dispute or offsetting claim relied upon. Later affidavits may add evidence in support of an existing ground, but they cannot introduce an entirely new case. Put the number, and the facts that support it, in the first affidavit.
Defects, “some other reason”, and running the s 459G application in NSW
A genuine dispute or offsetting claim is not the only way out, and it is not the whole of the application. Defects in the demand, a misleading verifying affidavit, and abuse of process sit under section 459J. None of that matters if the originating process and the supporting affidavit are not both filed and served inside 21 days. In the NSW Corporations List, the procedure is the case.
s 459J(1)(a): defect plus substantial injustice
The court may set aside a demand if, because of a defect in the demand, substantial injustice will be caused unless it is set aside. “Defect” is defined widely in section 9 of the Corporations Act to include an irregularity, a misstatement of an amount or total, a misdescription of a debt or other matter, and a misdescription of a person or entity.
A misspelled street name or a small interest miscalculation will not usually qualify. A misdescribed debt that sent the debtor off to answer the wrong case, or a gross error that prevents the company identifying what to pay, can. The injustice has to flow from the defect. It is not enough that the company would prefer not to pay.
Do not build the whole application on a technicality. Use the defect ground where it is real, and put the genuine dispute or offsetting claim in the same affidavit. A demand that names the wrong company, bundles an undisputed judgment with a disputed extras claim so the debtor cannot tell what to pay, or recites a place for payment that does not exist, is in s 459J(1)(a) territory. A demand with a typographical error in a suburb name usually is not.
s 459J(1)(b): abuse, affidavit failure, and unfairness
“Some other reason” catches supporting-affidavit failure, demands issued for an improper purpose, and abuse of process. It is the residual category, and construction files use it often.
A verifying affidavit that inaccurately or misleadingly describes the nature or legal basis of the debt is the pattern in CM Luxury. There, the creditor verified a contractual debt but later advanced a quantum meruit case after accepting that no signed contract existed. The Court held that the affidavit did not properly verify the debt ultimately relied upon and failed to address the reasonableness of the amount claimed as a quantum meruit. An affidavit that asserts no genuine dispute in the face of a documented variation fight is in the same territory. A demand used as a winding-up threat over a disputed construction claim is the most common improper purpose. Courts notice.
Issuing a demand while maintaining overlapping ordinary recovery proceedings for substantially the same debt can amount to an abuse of process. In Grounded Construction Group Pty Ltd v KW Civil & Construction Pty Ltd [2025] WASC 307, the Supreme Court of Western Australia held that a statutory demand should be set aside under section 459J(1)(b) where the creditor was simultaneously pursuing recovery proceedings and a statutory demand in respect of substantially overlapping claims. The Court emphasised that the two processes served different purposes: the recovery proceeding sought payment of the debt, while the statutory demand sought the insolvency consequences available under Part 5.4. The Court rejected a separate contention that the creditor's knowledge of the debtor's solvency was itself sufficient to establish abuse. Although Grounded was decided in the context of a Western Australian Security of Payment determination, the abuse analysis concerned the Commonwealth statutory-demand regime and is capable of persuasive application in NSW proceedings. Parallel proceedings are not automatically fatal, but where a creditor pursues substantially overlapping claims through both pathways, the Court may regard the process as abusive.
The “some other reason” ground also catches demands that, even if technically regular, subvert the scheme of Part 5.4: for example, a demand that includes a disputed unliquidated claim dressed up as a debt, or a demand served to influence a parallel adjudication rather than to test solvency.
File and serve within 21 days: originating process, r 2.4A, and Graywinter
In the Supreme Court of New South Wales, the application is an originating process under the Supreme Court (Corporations) Rules 1999 (NSW). Rule 2.4A applies to section 459G applications: it permits the plaintiff to file a copy of the statutory demand and any accompanying affidavit, and it requires a timely ASIC search in relation to the plaintiff. The content of the supporting affidavit — and the requirement that it raise the grounds relied on — is driven by section 459G(3) and the Graywinter / Sceam principle, not by rule 2.4A alone. Both the originating process and the supporting affidavit must be filed and served inside 21 days. One without the other is not an application. Service of the s 459G papers on the creditor is as essential as filing. Diary both.
Section 459G(3), as explained in Graywinter Properties Pty Ltd v Gas & Fuel Corporation Superannuation Fund (1996) 70 FCR 452 and later considered by the Victorian Court of Appeal in Sceam Construction Pty Ltd v Clyne [2021] VSCA 270, requires the supporting affidavit filed inside the statutory period to support the application. The ground relied on, and the material facts supporting it, must appear from that affidavit expressly or by necessary or reasonably available inference. While Graywinter remains the foundational authority, Sceam emphasised the statutory requirement that the affidavit “supports” the application, rather than treating the inquiry as confined to whether the creditor received fair notice of the company’s case. Later affidavits can supplement an existing ground. They cannot introduce an entirely new case. That is why the day-21 affidavit has to name the genuine dispute or the offsetting claim, with enough facts and figures to advance the company’s case. A placeholder affidavit that says “we dispute the debt and will provide details later” is how these applications die.
Warning: The affidavit you file inside the 21 days must itself support the application by raising every ground and the material facts supporting it. Under the Graywinter / Sceam principle, later affidavit material may supplement or elaborate upon a ground already raised in the statutory-period affidavit, but it cannot introduce a new ground or a materially different case. If the day-21 affidavit does not name your genuine dispute or offsetting claim — with figures — that argument is lost, even if it was a good one.
In Sceam, a building company sought to set aside a statutory demand by ultimately relying on a dispute concerning the validity of contractual termination and the resulting architect's certificate. The Court held that the affidavit filed within the statutory period did not identify or support that dispute. Later material could not cure the deficiency by introducing a different case. Consistently with section 459G(3), the Court emphasised that the critical question is whether the statutory-period affidavit supports the application on the ground relied upon. Construction debtors who plan to “get the expert report next week” need that report, or at least the relevant facts and quantum, reflected in the first affidavit.
Urgent Corporations List applications can go to the Corporations Duty Judge. Do not wait for an ordinary return date if day 21 is a Friday and the registry closing time is the real deadline. If the file is going to the Supreme Court, this is typically a matter for a litigation lawyer in New South Wales, not a letter of demand.
Corporations List hearing, later evidence, consent set-aside, and appeals
Statutory-demand cases in the Equity Division are managed in the Corporations List under Practice Note SC Eq 4. The List Judge case-manages with a view to speedy resolution of the real issues. There is a Corporations Duty Judge available for urgent applications.
Many demands are withdrawn or set aside by consent once a proper affidavit lands. That is a good outcome. It is still an outcome you only get if you filed and served on time. Consent orders should deal with costs. Silence on costs is how a company that has just been put to a 21-day scramble pays its own lawyers and the creditor’s.
Later evidence is useful for filling out a ground already raised. It is useless for a ground that was not in the day-21 affidavit. Cross-examination is uncommon but not unheard of where the genuineness of a dispute or the bona fides of an offsetting claim is under attack. Do not assume a s 459G hearing is a paperwork exercise if the affidavit is thin.
Appeals from s 459G determinations are possible but poor substitutes for a competent first application. By the time an appeal is on foot, the compliance period and the winding-up window may already be moving. The disciplined course is to get the first affidavit right.
After expiry: presumption of insolvency, winding up, and s 459S
Day 22 is not a second briefing. If the demand was not complied with and no competent s 459G application was made, the company is taken to have failed to comply. From that point the creditor is no longer arguing about an invoice. The creditor is preparing a winding-up application, and the company is trying to prove it is solvent in fact — with one hand tied by section 459S. That is a worse case on every measure.
The s 459C presumption and the 3-month winding-up window
If the company fails to comply, it is taken to have failed under section 459F of the Corporations Act. If a creditor then applies to wind up the company in insolvency under section 459P within three months after the failure, section 459C requires the court to presume insolvency. The presumption is rebuttable, but the onus has shifted.
The Federal Court’s Corporations Information Sheet 1 sets out the winding-up mechanics a creditor must get right:
an ASIC extract not more than seven days old at filing;
originating process attaching a copy of the demand;
evidence of service of the demand and of non-compliance;
Form 519 notice to ASIC;
publication on the ASIC published notices website;
a registered liquidator’s consent to act.
The application must generally be determined within six months unless the court extends time under section 459R of the Corporations Act. In practice, an uncontested winding-up application can move to a determination within a few months of filing; a genuinely contested solvency fight takes longer and costs considerably more, because the company must assemble and prove a full solvency case rather than answer a single invoice. Substitution of supporting creditors is a live risk if the original applicant is paid out. Paying the demanding creditor after a winding-up application has been advertised does not necessarily kill the proceeding. Another creditor can take the applicant’s place.
For the debtor, publication is the commercial event. Many head contracts, bonding facilities, and downstream subcontracts define an “insolvency event” to include the making of a winding-up application, not only the appointment of a liquidator — but the trigger is contractual, so read the clause. Principals read the ASIC notices. So do insurers and bankers.
Opposing winding up: solvency in fact, substitution, and administration/DOCA
The company can still oppose winding up by proving it is solvent in fact. That is a heavier forensic exercise than a s 459G application. Section 95A of the Corporations Act provides that a company is solvent if, and only if, it is able to pay all its debts as and when they become due and payable. The court wants cashflow evidence, aged payables, tax and superannuation position, work in progress, debtor recoverability, and a coherent picture of the next 12 months — not a director’s optimism and a pipeline of tenders.
Appointing a voluntary administrator and seeking an adjournment of the winding-up application, typically under section 440A of the Corporations Act, toward a deed of company arrangement is a different strategy again. It can be the right strategy for a construction company with live projects, recoverable WIP, and a prospect of a DOCA that returns more than liquidation. It is not a reason to have missed day 21, and it is not a reason to ignore section 588GA in the weeks before the application is filed.
A published winding-up application is often an insolvency event under standard-form construction contracts — again, check the defined terms. Principals may call bank guarantees. Other contracts may cross-default. Bonding facilities may be reviewed. Hire companies may move to repossess plant. That commercial cascade is why construction companies cannot treat expiry as a paperwork problem. The construction dispute guide covers the injunction, security-call, and insolvent-contractor overlay. This page is the reason that overlay gets triggered.
s 459S leave — why a missed 21-day application almost never gets a second life
Section 459S bars the company, without the court’s leave, from opposing a winding-up application on a ground it relied on, or could have relied on, in an application to set the demand aside. Leave is not to be granted unless the ground is material to proving that the company is solvent.
That is a high bar. A missed genuine-dispute case about one invoice almost never meets it. The dispute, even if genuine, does not prove the company can pay its debts as they fall due. Section 459S is not a spare 21 days. It is the provision that makes the first 21 days count. Directors who “will deal with it if they actually wind us up” have misunderstood the statute.
Construction debts, SOP determinations, and statutory demands
This is the overlap that New South Wales construction companies actually live in. A payment claim becomes a schedule, becomes an adjudication, becomes a filed certificate, becomes a statutory demand. At each step the available defences shrink. The SOP Act is a pay-now-argue-later statute. Part 5.4 is an insolvency statute. Treating them as the same fight is how respondents lose both.
Using a demand on an unpaid adjudication certificate or judgment
Once an adjudication certificate is filed as a judgment under section 25 of the SOP Act, it is a judgment debt. That is a proper foundation for a statutory demand. It is often the cleanest construction demand there is, provided the judgment has not been stayed and the creditor is not simultaneously pursuing overlapping recovery proceedings in a manner that may amount to an abuse of process under section 459J of the Corporations Act. No verifying affidavit is required under s 459E(3) of the Corporations Act if the debt is a judgment debt. The demand should identify the court, the proceeding number, the date of judgment, and the unpaid amount, and should schedule interest separately if interest is claimed.
The SOP pathway that produces the certificate is explained in the definitive NSW Security of Payment guide. This page assumes that work is done. The commercial sequence for a claimant is usually: unpaid determination → adjudication certificate → file as judgment → statutory demand →, if still unpaid, winding up. Each step is optional. Each step increases pressure. Each step also increases the costs and preference risk if the debtor is actually insolvent.
A NSW security of payment lawyer is the right starting point while the dispute is still in claim, schedule, or adjudication territory. Once the certificate is a judgment, the file has one foot in Part 5.4.
Why “I still dispute the work” usually fails once the certificate is registered
In the matter of Douglas Aerospace Pty Ltd [2015] NSWSC 167; (2015) 294 FLR 186 is a leading NSW authority on the interaction between SOP judgments and statutory demands. The Court held that a judgment founded on a filed adjudication certificate is generally not open to a genuine-dispute attack based on the proposition that the adjudication does not reflect the parties’ true contractual rights. The SOP Act’s pay-now-argue-later policy therefore continues after judgment. Importantly, the Court also held that a mere contention that the adjudication was wrong is not itself an offsetting claim. What remains available is a genuine monetary cross-claim, such as damages, rectification costs, liquidated damages, or restitution of amounts already paid.
Plead the judgment as owing, then pivot to a separate quantified cross-claim, or do not bother. Recycled adjudication submissions, complaints about the adjudicator’s valuation, and arguments that the adjudicated amount should never have been awarded will rarely constitute a viable s 459G case once judgment has been entered. Those arguments had a home: the payment schedule, the adjudication response, and, in a proper case, judicial review for jurisdictional error. They do not have a home in a genuine-dispute affidavit attacking a judgment.
Offsetting claims that can still defeat a SOP-based demand
What can still work:
liquidated damages, if the notice and time-bar regime in the contract was followed and the calculation is in the affidavit;
third-party rectification quotes for non-conforming work the adjudicator did not value;
other genuine cross-demands against the same creditor, even if they arise from a different project or a different contract;
a quantified set-off that existed independently of the adjudicated payment claim.
What will not work:
an attempt to re-open valuation;
an unquantified defect narrative;
a set-off that is really a complaint about the adjudicator;
a global delay claim with no number;
a claim against a different entity in the creditor’s group.
Worked example — offsetting a SOP judgment. An earthworks subcontractor files an adjudication certificate as a judgment for $310,000 and serves a demand. The head contractor cannot dispute the judgment. It can, and does, put on a s 459G affidavit exhibiting: the subcontract LD clause at $8,000 per working day; notices of delay and LD notices served in accordance with the contract; a superintendent’s certificate levying 22 days’ LDs ($176,000); and three waterproofing quotes totalling $95,000 for membrane failures the adjudicator recorded as “not part of this payment claim.” If those claims are genuine, the substantiated amount is $310,000 − $271,000 = $39,000. The court may vary the demand to $39,000 rather than set it aside. If the quotes and LD case are not genuine, the demand stands in full. The difference is the quality of the day-21 evidence, not the strength of the feeling on site.
Subcontractor debt recovery: the Contractors Debts Act, withholding requests, and the insolvent head contractor
The Contractors Debts Act 1997 (NSW) is a different recovery tool. It can redirect money from a principal after a judgment is obtained. It does not replace a statutory demand, and a statutory demand does not replace it. If the head contractor is the insolvent party, a subcontractor’s demand may be legally sound and commercially empty. In that setting, the Debt Certificate pathway, and not Part 5.4, may be the only money left.
This is the point at which many subcontractors reach for the wrong tool. If the head contractor is insolvent or asset-poor, a statutory demand may be legally impeccable and commercially worthless — you win a winding-up order and stand in the queue behind secured creditors, the ATO, and employees, and recover cents in the dollar or nothing. The money that is actually recoverable is usually the money the principal still owes the head contractor above you. The Contractors Debts Act, not Part 5.4, is the tool that reaches it.
Subcontractor recovery triage — when the head contractor is failing. Before issuing any demand, run this sequence:
First, if an adjudication is on foot or about to be, serve a payment withholding request under section 26A of the SOP Act. It can freeze money the principal owes the head contractor while the adjudication runs, before the head contractor’s other creditors reach it. This is the earliest and often the most valuable step, and it is routinely missed.
Second, convert your claim into a judgment — typically by filing the SOP Act adjudication certificate as a judgment under section 25.
Third, apply for a debt certificate under section 7 of the Contractors Debts Act.
Fourth, serve a notice of claim on the principal under section 6 of the Contractors Debts Act. The principal is then obliged to redirect money otherwise payable to the defaulting contractor to you. Priority between competing subcontractor notices is generally the order of service, so speed matters — a slow subcontractor can find the principal’s money already committed to a faster one.
None of these tools is a statutory demand, and none of them tests the head contractor’s solvency. They are debt-recovery mechanisms aimed at a different pocket. You can run them alongside a demand, but against a head contractor with no assets and a funded project sitting above, the demand is theatre and the Contractors Debts Act is the money. If you are a subcontractor deciding between the two, that choice — not the drafting of the Form 509H — is the decision that determines whether you get paid.
Supply-chain insolvency is also a director problem for the company that receives the demand. Paying a demand by a company that is itself about to fail can later be attacked as an unfair preference. Solvency of the creditor is not a setting-aside ground, but it is a reason to take advice before electing to pay.
Abuse of process, costs, preferences, and professional risk
Part 5.4 rewards creditors who issue a clean demand on a clean debt. It punishes creditors who use the winding-up threat as leverage on a disputed construction claim, and it can later claw back a payment extracted from a company that was already insolvent. The costs and preference consequences are not a footnote. In construction cashflow fights, they are often the reason the demand should never have been sent.
Demand as a winding-up threat over a disputed claim
Part 5.4 is not a debt-collection shortcut for a disputed variation. Using it that way is the paradigm abuse. The setting-aside application will be the cheaper piece of litigation, and it will usually succeed. Indemnity costs are a real risk where the creditor knew, or ought to have known, the debt was disputed — particularly where the verifying affidavit asserted “no genuine dispute” against a file of payment schedules.
The abuse is not only a s 459J point. It is a professional-risk point. Construction principals who send demands to subcontractors mid-project to force a discount, and subcontractors who send demands to solvent head contractors to jump a queue, both end up explaining themselves to a Corporations List judge. The demand is a solvency test. If you do not actually want the company wound up, and you know the debt is in dispute, you are using the wrong document.
Indemnity costs and solicitors’ duties on issue and defence
Solicitors who issue demands on live construction files own the correspondence. The verifying affidavit’s “no genuine dispute” statement is a statement of belief that has to be available on the brief. On the defence side, an offsetting claim invented to buy time is in the same category. The Corporations List has a long memory for both.
Costs follow the event on most s 459G applications. Indemnity costs are awarded where the demand, or the application, was unreasonable: a demand issued in the face of a documented dispute; an application run on a ground the day-21 affidavit never raised; a debtor who filed to buy time with no genuine case. Offers of compromise and Calderbank letters can still matter, even inside a 21-day window, if there is time to put a reasonable figure.
Unfair preference risk if payment is extracted from an insolvent company
A payment made because of a demand is still a payment. If the company is wound up, a liquidator can still attack it as an unfair preference under Part 5.7B of the Corporations Act, including section 588FA. Under section 588FA(1), a transaction is an unfair preference if the company and the creditor are parties to it and the creditor receives more from the company, in respect of an unsecured debt, than it would receive if the transaction were set aside and the creditor proved in the winding up. Creditors who use demands against companies they know are failing can win the race to the registered office and lose the money later. The running-account and continuing business relationship analysis in section 588FA(3), and the good-faith defence under section 588FG, are all live in construction supply accounts — and all of them are worse facts to run after you have issued a demand that asserted the company could not pay.
Directors who prefer one creditor under threat of a demand, while other subcontractors go unpaid, create both preference and insolvent-trading exposure. Winding up a distressed builder and restarting the same business through a new entity to shed those debts is illegal phoenix activity, and phoenixing in New South Wales construction is squarely in the sights of the Commonwealth phoenixing provisions and ASIC’s director-disqualification powers. Paying the demanding subcontractor on day 20, while the ATO, the civil crew, and last month’s concrete supplier wait, is exactly the pattern liquidators look for. The demand does not make the payment safe. It often makes it more visible.
Checklists, timeline, and the ways these applications are actually lost
The law above is only useful if it can be executed inside 21 days. Construction files are lost on service dates, missing exhibits, unquantified offsets, and affidavits that do not raise the real ground. The lists below are the operational version of this guide: what to do, in order, and the failure modes that keep repeating in the Corporations List.
Creditor-side checklist from issue to winding up
Confirm the debtor is a company, the debt is due and payable, and the amount is at least $4,000 after any known genuine offset.
Pull a current ASIC extract. Use the registered office on that extract. Confirm the ACN matches the subcontract and the invoices.
Choose the foundation: judgment / filed adjudication certificate, or invoice debt with a Form 7 affidavit that does not pre-date the demand.
Draft Form 509H with a schedule a contracts administrator can recognise. Keep interest separate. Specify a place for payment in Australia. Leave the notes in.
Match the affidavit to the demand. Do not swear “no genuine dispute” against a file full of variation notices or payment schedules.
Serve under section 109X wherever possible. Prove posting or delivery. If electronic service is used, prove the address, sending, and receipt under Part 1.2AA. Swear the affidavit of service as if winding up depends on it — because it will.
Diary day 21 and the three-month winding-up window. Do not issue overlapping ordinary proceedings for the same sum without advice.
If there is no compliance and no s 459G application, follow the winding-up formalities in the Federal Court guide or the equivalent NSW Corporations List requirements: fresh ASIC extract, evidence of service and non-compliance, Form 519, publication, liquidator’s consent.
Before issuing, ask whether you actually want this company wound up, and whether a payment extracted from it will survive a preference claim.
Debtor-side 21-day checklist and evidence index
Day 0–1: Photograph everything, including the envelope. Confirm the method and place of service. Diary day 21. Pull the ASIC extract, the job file, and the SOP file. Do not write a long letter instead of starting the affidavit.
Day 1–3: Classify the debt (invoice vs judgment vs adjudication certificate). Decide pay / withdraw / secure / apply. If the debt is a SOP judgment, stop arguing with the adjudicator and start quantifying offsets.
Day 1–7: If applying, commission quotes, short expert opinions, LD calculations, and the contract-notice trail. Do not wait for a perfect report.
Day 7–14: Draft originating process and the supporting affidavit (r 2.4A and s 459G(3)). Name every ground. Put numbers on every offsetting claim. Identify the genuine dispute with documents, not adjectives.
Day 14–21: File and serve. Serving on day 22 is not an application. Build in time for registry queues and process servers.
Evidence index: demand and affidavit as served; ASIC extract; subcontract and special conditions; payment claims and schedules; adjudication determination, certificate, and judgment; notices of delay and LD; defect photographs and quotes; any parallel proceedings; the envelope and proof of how the demand arrived.
Failure-mode library: the ways these applications are actually lost
Treating the demand as an invoice and writing letters instead of filing.
Counting 21 days from the wrong service date, or from the date on the form.
Filing the originating process and forgetting to serve the affidavit.
A section 459G(3) affidavit that does not identify the real genuine dispute, offsetting claim, or other ground ultimately relied upon.
Running “genuine dispute” against a SOP judgment.
An offsetting claim with no quantum.
Relying on a typo instead of the dispute that actually exists.
Serving the demand only by informal email and assuming it is effective without proving Part 1.2AA compliance or actual receipt.
Posting the demand and being unable to prove postage.
Issuing a demand on a live variation dispute and then paying indemnity costs.
Missing day 21 and hoping section 459S will revive the argument.
Proving the construction case and forgetting that the court is not trying it.
Naming the wrong company, the wrong ACN, or the trustee in the wrong capacity.
Paying one creditor under threat of a demand while the company is insolvent, and creating a preference.
Assuming a Christmas shutdown or an unattended registered office stops time running.
Conclusion
A statutory demand is the point at which a New South Wales construction payment fight becomes a corporate-insolvency fight. The underlying law is Commonwealth. The operational reality is local: registered offices, Corporations List affidavits, SOP judgments, liquidated damages, defect quotes, and head-contract solvency defaults.
Issue a demand only for a due and payable debt that can survive a genuine-dispute attack. If you are served, the only questions that matter in the first 48 hours are service date, what the debt actually is, and which of the four responses — pay, withdraw, secure, or apply — you can execute inside 21 days. Against a filed adjudication certificate, stop arguing with the adjudicator and start quantifying the offset. Against an ordinary invoice, put the genuine dispute in the day-21 affidavit, not in a letter.
The window is the whole case. Everything after expiry is a worse version of the application you could have made.
If a Form 509H has been served on your company, the clock is already running and the single most urgent task is to establish your service date and day 21 before anything else — because no court can give those days back. Merlo Law’s construction and statutory demand lawyers can confirm your deadline, classify the debt, and file a competent section 459G application inside the window, or advise on issuing a demand that will survive a setting-aside attack. If you are a subcontractor owed money by a failing head contractor, we can also advise whether a demand or the Contractors Debts Act is the pathway that will actually recover it. Contact us the day the demand arrives, not the week it expires.
FAQs
What is a statutory demand in NSW construction?
It is a creditor’s formal written demand under section 459E of the Corporations Act requiring a company to pay a due and payable debt of at least $4,000, or to secure or compound for it, within 21 days of service. It is an insolvency document, not a substitute for a payment claim or a statement of claim.
How long do I have to set aside a statutory demand?
Twenty-one days after service. Within that period you must file the originating process and supporting affidavit and serve copies on the creditor. The High Court in David Grant held the court cannot extend time.
Can I serve or answer a statutory demand by email?
Section 109X remains the safest method: leave the document at, or post it to, the registered office, or deliver it personally to an Australian-resident director. Email is not listed in section 109X, but section 109X is not the only route. Part 1.2AA can permit electronic sending of documents under Chapters 5 to 5D, including statutory demands, if its conditions are met and service can be proved. Do not assume that an informal email to a project address starts the 21 days. If you are the debtor, diary from the earliest arguable service date and do not gamble the window on a service debate.
Can I raise a genuine dispute against a SOP adjudication judgment?
Generally no, once the adjudication certificate has been filed as a judgment. The usual remaining pathway is a genuine, quantified offsetting claim under section 459H(1)(b), not a re-run of the determination.
What is an offsetting claim?
A genuine claim the company has against the creditor by way of counterclaim, set-off, or cross-demand, even if it arises from a different transaction. In construction files that is typically liquidated damages, defect rectification, or another quantified back-charge. It needs a number and some objective support.
What happens if I ignore the demand?
The company is taken to fail to comply. If a winding-up application is made within three months, the court must presume insolvency. A published application can also trigger contractual insolvency defaults, calls on security, and cross-defaults on other projects.
Is a statutory demand the same as a winding-up application?
No. The demand is the precursor. The winding-up application is the later proceeding that relies on non-compliance. Missing the demand stage makes the winding-up stage much harder, because section 459S restricts the grounds you can then run.
Can a subcontractor use a statutory demand and the Contractors Debts Act at the same time?
They are different tools. A demand attacks the debtor company’s solvency. The Contractors Debts Act can redirect money from a principal after judgment. Using overlapping ordinary recovery proceedings and a statutory demand in respect of substantially the same debt can amount to an abuse of process, particularly where the proceedings seek payment while the statutory demand simultaneously pursues the insolvency consequences available under Part 5.4. Using the Debt Certificate pathway against a funded principal is often the better recovery if the head contractor is empty.
Who hears these applications in NSW?
The Supreme Court of New South Wales Corporations List (Practice Note SC Eq 4) or the Federal Court. In the Supreme Court, rule 2.4A of the Supreme Court (Corporations) Rules 1999 applies to section 459G applications (ASIC search and demand copies). The supporting affidavit’s content is governed by section 459G(3) and the Graywinter / Sceam principle.
Should I pay a disputed demand to keep a project moving?
Sometimes. Paying can be cheaper than a Corporations List contest or a published winding-up application. It can also be an unfair preference if the company is insolvent, and it can amount to admitting a debt you did not owe. That is a commercial and directors’-duties decision, not an automatic yes.
Does a statutory demand work against a sole trader builder or a partnership?
No. Part 5.4 applies to companies. Individuals and partnerships are outside this regime. Personal insolvency uses a different instrument, the bankruptcy notice under the Bankruptcy Act.
What if the demand was left at the site office, not the registered office?
Service on a project address is not, by itself, section 109X service. The 21 days may not have started. Do not rely on that point alone and miss day 21. Raise defective service in the s 459G affidavit as well.
This guide is for informational purposes only and does not constitute legal advice. For advice tailored to your specific circumstances, please contact Merlo Law.
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