Can You Defeat a SOP Act Statutory Demand with Offsetting Claims in NSW?

John Merlo
9 hours ago
12 min read

Key Takeaways

While a Building and Construction Industry Security of Payment Act 1999(NSW) (SOP Act) judgment debt is generally insulated from a "genuine dispute" defence, respondents may still challenge a related statutory demand by raising an offsetting claim.
Failing to file and serve an application to set aside the demand within the statutory period of 21 days under sections 9 and 459G of the Corporations Act 2001(Cth) (Corporations Act) can result in non-compliance with the demand and, if a winding-up application is made within three months of that failure under section 459C, a rebuttable presumption of insolvency.
Civil back-charges, such as liquidated damages or unliquidated defect rectification costs, can typically support an offsetting claim if they are rigorously quantified and documented.
Issuing a statutory demand concurrently with parallel court debt recovery proceedings can constitute an abuse of process under section 459J, potentially providing grounds to set aside the demand.

Your site supervisor flags a formal document left at the head office by a process server. It is a creditor's statutory demand from a disgruntled earthworks subcontractor, leveraging a recent Security of Payment (SOP) adjudication certificate that they just filed as a judgment debt. Almost overnight, your civil contracting business is staring down a 21-day countdown to a statutory presumption of insolvency. The immediate question is no longer about litigating the adjudicator's decision—it is about deploying a valid offsetting claim under federal insolvency law to prevent your company from being wound up. If you are already on the clock, skip ahead to the four-step action checklist below and start there.

The 21-Day Statutory Demand Crisis: Immediate Procedural Timeline

Serving the demand shifts the matter from a standard payment dispute into the domain of corporate insolvency, where the rules are far less forgiving. You cannot wait for the final account reconciliation; this section outlines the precise 21-day timeline you must meet to block the winding-up threat and keep your business trading.

The Section 459G Fatal Deadline Limit

Warning: Under section 459G of the Corporations Act, a civil contractor in NSW has an unextendible statutory period of 21 days (as defined in section 9) from the date of service to file and serve an application to set aside a statutory demand.

This 21-day statutory period is absolute. Section 459G provides that an application may only be made within the statutory period after the demand is served. The court possesses no jurisdiction to grant extensions, meaning that missing this deadline by even a single day is fatal to your application.

Treating a statutory demand like a standard invoice, or hoping to negotiate after the deadline expires, is a critical commercial error.

Separating SOP Act Strict Liability from Corporations Act Insolvency Defences

A common point of confusion arises from the interaction between state-based payment laws and the federal insolvency framework. Under section 25 of the SOP Act, an adjudication certificate can be filed and enforced as a judgment debt. Because it is already a crystallised judgment, you generally cannot claim there is a "genuine dispute" about the debt itself in subsequent insolvency proceedings.

A frequent and fatal error is a contractor drafting the setting-aside application around the merits of the adjudication—arguing the adjudicator got the valuation wrong, misread the payment claim, or ignored a variation. That is a "genuine dispute" argument dressed up in different words, and against a SOP judgment it tends to attract short shrift.

The reframe that matters is subtle but decisive: you are not disputing that the debt exists; you are asserting a separate, quantified claim that reduces it. Delay damages, defect rectification costs, and back-charges the adjudicator had no jurisdiction to weigh are offsetting claims, not disputes about the judgment. Plead them as the former and the affidavit reads coherently; plead them as the latter and you invite an early strike-out.

The cleanest applications tend to concede the judgment debt outright, then pivot immediately to the offsetting claim and its quantum. Conceding the debt is counter-intuitive for clients who feel wronged by the adjudication, but it removes the hook the creditor's counsel is waiting for.

The Presumption of Insolvency Under Section 459F

Failing to successfully apply to set aside the demand within the strict compliance period can carry severe commercial consequences. Under section 459F of the Corporations Act, if the demand remains in effect and uncomplied-with after the statutory period of 21 days, the company is taken to fail to comply with the demand. That failure enlivens the statutory presumption of insolvency under section 459C if a winding-up application is later made.

Once this presumption takes effect, it may give the subcontractor the right to apply for a winding-up order against your business.

A published winding-up notice can devastate you commercially, and the damage often lands well before any court hears a winding-up application.

Most standard-form head contracts contain a solvency-based termination trigger, and the damage can escalate quickly:

A published winding-up notice is frequently enough for a principal to call an insolvency event and terminate—regardless of whether your business is in fact solvent.
From there, the cross-default clauses in your other contracts can be triggered, placing unrelated projects at risk.
Your bonding facilities can then cascade, so a single subcontractor's demand can jeopardise work that has nothing to do with the underlying dispute.

This is why the demand must be treated as a live threat to the whole business from day one, not as an isolated payment argument to be managed at leisure.

Directors must also remain acutely aware of their personal duties to prevent insolvent trading, as outlined in current ASIC guidance such as Information Sheet 42 (Insolvency for directors) and Regulatory Guide 217 (Duty to prevent insolvent trading), because an unchallenged demand may be relied upon as evidence of insolvency.

Mobilising Offsetting Claims Against a SOP Judgment Debt

If the threat is this severe, what can actually stop it? This is where offsetting claims come in. You cannot relitigate the adjudicator's decision to avoid paying the judgment debt. However, you can leverage unliquidated civil back-charges that the adjudicator refused to consider by packaging them as an offsetting claim to defeat the statutory demand in the Supreme Court. This section details how to structurally deploy your counterclaims—such as delay damages or defect rectification costs—to neutralise the insolvency threat.

Defining a Genuine Offsetting Claim Under Section 459H

An offsetting claim under section 459H of the Corporations Act allows a NSW civil contractor to rely on counterclaims or cross-demands to reduce or eliminate the judgment debt claimed in the statutory demand.

The court can set aside or vary a demand if it is satisfied that the company has a genuine offsetting claim that reduces the total debt below the statutory minimum. This legal trigger requires that the offsetting claim be genuine and advanced in good faith, rather than being spurious or manufactured simply to delay payment. If your civil contracting business is facing a statutory demand based on a SOP judgment, you should urgently engage experienced NSW building and construction lawyers to assess the validity of your offsetting claims. The decision to contact Merlo Law or seek independent advice early can be critical in meeting the 21-day deadline.

Quantifying Civil Back-charges: Liquidated Damages and Defect Rectification

Example: Consider a head contractor who receives a statutory demand for a $150,000 SOP judgment debt. The contractor currently holds an offsetting claim of $180,000 against the subcontractor, which comprises quantified liquidated damages for delayed completion and third-party quotes for rectifying non-conforming trenching work.

While the adjudicator may have lacked jurisdiction to consider these complex counterclaims during the rapid SOP process, these civil back-charges can typically serve as evidence in the Supreme Court to demonstrate that the offsetting claim exceeds the judgment debt. However, if the offsetting claim relies on a contractual liquidated damages clause, that clause is only enforceable if you strictly complied with the contract's notice and time bar provisions. Courts may scrutinise similar clauses where the head contractor failed to issue the requisite formal notices of delay before quantifying the claim. Consulting a NSW commercial lawyer can help clarify whether your contractual back-charges are sufficiently robust to present as an offsetting claim.

The Evidentiary Threshold for Offsetting Claims in the Supreme Court

Expert insight: Raising an offsetting claim requires more than just making allegations in an affidavit. In Douglas Aerospace Pty Ltd v Indistri Engineering Albury Pty Ltd [2015] NSWSC 167, the Supreme Court of New South Wales confirmed that, although a judgment debt founded on a filed adjudication certificate is generally not amenable to a "genuine dispute" argument, a statutory demand based on that debt may still be met by a genuine and quantifiable offsetting claim.

Importantly, the Court distinguished between a true cross-claim, such as a claim for defect rectification damages or other breach of contract damages, and a mere challenge to the correctness of the adjudication itself, holding that the latter is not an offsetting claim.

The trap is the day-21 affidavit that reads well as a narrative but carries no numbers. A director who swears that the trenching "was defective and will cost a great deal to rectify" has given the court an assertion, not an offsetting claim. Without a figure the court can test against the judgment debt, there is nothing to weigh, and the application is exposed.

You do not need the claim proven to trial standard at this stage—that misunderstanding pushes contractors into over-engineering the affidavit and blowing the deadline. What you need is a genuine claim advanced in good faith, supported by something objective: a surveyor's measurement, a geotechnical finding, a third-party rectification quote, even an itemised estimate from a subcontractor engaged to make good.

The practical failure mode is timing, not merits. Contractors sit on the demand for a fortnight, then scramble for quotes in the final 48 hours and file an affidavit that gestures at defects it cannot yet quantify. Get the quantum evidence commissioned in the first week, so the day-21 affidavit attaches numbers rather than promises of numbers to come.

Abuse of Process Defences and Parallel Recovery Tactics

Some aggressive subcontractors do not stop at a statutory demand; they launch parallel court proceedings for the same debt to exert maximum commercial pressure. While this dual-track strategy can feel overwhelming, this aggressive conduct can backfire legally, potentially providing you with independent grounds to have the demand struck out entirely.

When Parallel Proceedings Trigger Section 459J Abuse of Process

Under section 459J of the Corporations Act, a NSW court may set aside a statutory demand if issuing the demand alongside parallel court proceedings is deemed an abuse of process.

Courts are often critical of creditors who deploy the insolvency regime while simultaneously pursuing overlapping debt recovery proceedings through ordinary civil litigation. As examined 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 founded on a Security of Payment adjudication determination could be set aside under section 459J(1)(b) where the creditor was concurrently maintaining overlapping court proceedings seeking recovery of substantially the same amounts. The Court's concern was the use of parallel processes with inconsistent objectives—debt recovery through civil proceedings and the insolvency consequences flowing from a statutory demand. If a subcontractor adopts this tactic, raising an abuse of process argument may provide a separate procedural defence to neutralise the threat.

Although Grounded Construction is a Western Australian decision concerning the Building and Construction Industry (Security of Payment) Act 2021(WA), it may be persuasive in NSW because the abuse of process analysis was grounded in section 459J of the Corporations Act and authorities concerning overlapping debt recovery and insolvency processes.

Seeking independent advice to resolve a commercial dispute can help determine if the creditor's conduct reaches the high threshold for abuse of process.

Defect in the Demand Causing Substantial Injustice

Warning: Civil contractors should not rely on minor typographical errors to defeat a statutory demand. While section 459J(1)(a) provides a procedural mechanism to set aside a demand due to a defect, the court will typically only do so if it is satisfied that the defect will cause a "substantial injustice." A misspelled name or a minor miscalculation of interest is unlikely to satisfy this test. However, a gross misstatement of the judgment debt amount that genuinely prejudices your ability to identify or pay the debt may be considered sufficient. Predicting how a court will assess substantial injustice carries significant risk, and attempting to rely on technicalities rather than substantive offsetting claims or Calderbank offers often results in failure.

Structuring Your Response Strategy Before the Deadline

When a civil contracting business receives a statutory demand based on a SOP judgment, survival depends on rapid, structured action before the 21-day deadline expires.

Mark the service date immediately: Calculate the exact statutory period of 21 days under sections 9 and 459G, ensuring no assumptions are made about weekends or public holidays extending the timeframe.
Isolate and quantify back-charges: Gather all evidence of potential offsetting claims, such as unliquidated defect rectification costs or validly issued liquidated damages claims.
Assess for parallel actions: Determine if the subcontractor has concurrently filed debt recovery proceedings in the District or Supreme Court, which could support an abuse of process defence.
Engage an NSW litigation lawyer: Retain independent legal counsel with appropriate statutory-demand experience to draft the originating process and supporting affidavit without delay.

On the evidence, move faster than feels comfortable. Brief a geotechnical engineer or registered surveyor in the first 48 hours and ask for a short, dated report addressed to the specific defect—compaction failure, incorrect levels, non-conforming trenching—rather than a full forensic investigation you will never finish in time. Where a full inspection cannot be booked quickly, a site attendance with photographs, measurements, and a signed preliminary opinion will usually carry more weight than a polished report that arrives after the deadline. Run the rectification quotes in parallel, not in sequence: send the same defect scope to two or three trade contractors at once so you have independent quantum figures to attach on day 21, even if a more detailed report follows later.

Conclusion

When the process server hands over a statutory demand based on a SOP judgment debt, the stakes for your civil contracting business immediately escalate from a standard payment dispute to an existential threat. As we have seen, the strict statutory period of 21 days imposed by sections 9 and 459G of the Corporations Act is absolute, and failing to challenge the demand is likely to trigger a presumption of insolvency under section 459C that can severely damage your commercial standing. While the adjudicator's decision itself is generally insulated from a "genuine dispute" defence, the federal insolvency framework still provides a critical pathway for survival.

You now understand that you can mobilise unliquidated civil back-charges—such as strictly quantified liquidated damages or comprehensively documented defect rectification costs—as a genuine offsetting claim. You also know that aggressive subcontractor tactics, such as launching parallel court proceedings, can potentially be weaponised against them as an abuse of process under section 459J. These defences require objective evidence and precise procedural execution, not just bare assertions of defective work.

The window to act is rapidly closing, and the downstream cost of inaction—terminated head contracts, triggered cross-defaults, and lost bonding facilities—can dwarf the original debt many times over. Your immediate next step is to collate all third-party quotes, geotechnical reports, and formal notices of delay related to the subcontractor's work, and to have the originating process and supporting affidavit prepared before the 21-day deadline expires.

If you take one thing from this article, take this: plead a quantified offsetting claim, not a dispute about the adjudication, and commission your quantum evidence in the first week—not the final 48 hours.

Merlo Law regularly acts for civil contractors responding to statutory demands under intense time pressure. If you have been served, contact us for an urgent review of your demand while there is still time to act.

FAQs

Can I raise a "genuine dispute" about the debt if it is based on a SOP adjudication certificate?

Generally, you cannot claim a genuine dispute about the debt itself if an adjudication certificate has been filed as a judgment under section 25 of the SOP Act. Once filed, it is a crystallised judgment debt. However, you can still apply to set aside the statutory demand by establishing a genuine offsetting claim.

What is the time limit to apply to set aside a statutory demand in NSW?

Under section 459G of the Corporations Act, you have a strict statutory period of 21 days (as defined in section 9) from the date of service to file and serve an application to set aside a statutory demand. The court has no jurisdiction to extend this timeframe.

What happens if I ignore a statutory demand for a SOP judgment debt?

If you do not comply with the demand or successfully apply to set it aside within the statutory period of 21 days, section 459F of the Corporations Act states the company is taken to fail to comply with the demand. That failure enlivens the statutory presumption of insolvency under section 459C, which may give the creditor the right to apply for a winding-up order against your business.

Can liquidated damages be used as an offsetting claim against a statutory demand?

Yes, liquidated damages for delayed completion can typically support an offsetting claim, provided they are genuine and properly quantified. However, their enforceability often depends on whether you have strictly complied with the head contract's notice and time bar provisions before making the claim.

What evidence do I need to support an offsetting claim for defective civil works?

An offsetting claim for defective works requires objective, third-party support rather than bare assertions in an affidavit. You will typically need independent evidence, such as geotechnical reports, surveyor data, or formal third-party rectification quotes, to satisfy the court that the offsetting claim is genuine.

Can a statutory demand be set aside if the subcontractor has also sued me in court for the same debt?

Yes, under section 459J of the Corporations Act, a court may set aside a statutory demand if issuing the demand alongside parallel court proceedings is deemed an abuse of process. Courts may regard the concurrent use of overlapping debt recovery proceedings and the insolvency regime as an abuse of process where the two procedures are being used simultaneously in respect of substantially the same debt.

This guide is for informational purposes only and does not constitute legal advice. For advice tailored to your specific circumstances, please contact Merlo Law