Most legal deadlines bend. Courts grant extensions, parties agree to standstills, and a missed date is usually recoverable with some grovelling and costs. The 21-day deadline on a creditor’s statutory demand is the exception every founder should know about: the deadline to apply to set one aside cannot be extended by anyone — not by the court, not even by consent — and missing it converts a single unpaid invoice into a legal presumption that your company is insolvent. For a startup that is cash-poor but balance-sheet defensible, that presumption is the cheapest weapon a creditor has.
What a Statutory Demand Is
A statutory demand under section 459E of the Corporations Act 2001 (Cth) is a formal written demand that a company pay a debt — or secure or compound it to the creditor’s reasonable satisfaction — within 21 days of service. Any creditor owed a debt (or debts totalling) at least the statutory minimum of $4,000 that is due and payable can serve one. No court issues it; the creditor’s lawyer simply prepares it and serves it.
The $4,000 figure trips people up because it changed several times in quick succession: it was $2,000 for decades, jumped to a temporary $20,000 during the 2020 COVID moratorium, briefly reverted to $2,000, then settled at $4,000 for demands served on or after 1 July 2021. Plenty of online guides — including some from the big commoditised-law platforms — still quote the old number.
Formalities matter here more than almost anywhere else in corporate law. The demand must be in the prescribed form (Form 509H), signed by or on behalf of the creditor, and — unless the debt is a judgment debt — accompanied by an affidavit verifying that the debt is due and payable. Service is typically effected under section 109X: leaving the demand at, or posting it to, the company’s registered office, or delivering it personally to a director who resides in Australia.
That last point deserves a pause. Service at the registered office is valid whether or not anyone actually reads the document. If your registered office is your accountant’s address, a virtual office, or the co-working space you left two funding rounds ago, a statutory demand can be validly served and the 21 days can run out before a human being at your company knows it exists. Keeping your ASIC registered office current — and making sure mail to it reaches a founder quickly — is the single cheapest piece of protection available.
The 21 Days: Three Doors, Then the Cliff
Once served, a company has exactly 21 days and essentially three options.
Pay, secure or compound the debt. If the debt is genuinely owed and you can pay it, pay it. “Compounding” covers negotiated arrangements — a payment plan the creditor accepts in satisfaction of the demand. Get any deal documented and, ideally, get the demand formally withdrawn.
Apply to set the demand aside. Under section 459G, the company may apply to court to set the demand aside — but the application and a supporting affidavit must be filed and served within the 21 days. The High Court confirmed in David Grant & Co Pty Ltd v Westpac Banking Corp (1995) 184 CLR 265 that the court has no power to extend this period. An affidavit served on day 22 is worthless. The affidavit also needs to disclose the grounds relied on: under the Graywinter line of authority, a company generally cannot run grounds at the hearing that its 21-day affidavit didn’t at least foreshadow, so a holding affidavit drafted in a panic on the last afternoon is a dangerous economy.
Do nothing. Then, at the end of the period, the company is taken to have failed to comply (section 459F), and the consequences below follow.
Grounds to Set Aside
The court must set aside a demand under section 459H where there is a genuine dispute about the existence or amount of the debt, or the company has a genuine offsetting claim, and the undisputed balance falls below $4,000. The threshold is deliberately low — in Eyota Pty Ltd v Hanave Pty Ltd (1994) 12 ACSR 785 it was described as a “plausible contention requiring investigation”, akin to the serious-question test. The set-aside hearing is not a trial of the debt; it just decides whether this summary procedure is the wrong forum.
Section 459J adds two further grounds: a defect in the demand causing substantial injustice, and a residual “some other reason” discretion. Defects are common — wrong amounts, defective affidavits, mismatched creditor names — but minor errors that mislead nobody won’t do it.
The genuine-dispute ground cuts both ways for founders. If a customer is withholding payment on your invoices and you’re tempted to serve a demand of your own, remember it is a debt-collection tool only for undisputed debts. Serve one over a contested SaaS invoice and you can expect it to be set aside with costs ordered against you under section 459N — and the dispute no closer to resolved.
The Presumption of Insolvency
Here is why creditors love this procedure. If the company fails to comply, section 459C(2)(a) entitles a creditor who applies to wind the company up within three months of the failure to a presumption that the company is insolvent. In the winding-up proceeding, the onus flips: the company must prove solvency, usually with proper accounts and often a forensic accountant, to a court that starts from the opposite assumption. Many startups that could have won a genuine-dispute argument for a few thousand dollars in week two end up spending ten times that resisting a winding-up application in month three.
A pending winding-up application also radiates outward: it appears on insolvency notices, spooks investors mid-raise, can trigger default clauses in your venture debt and key contracts, and sharpens every director’s exposure to insolvent trading liability for debts incurred while the presumption hangs overhead. If the company genuinely cannot pay its debts, the demand is better treated as the fire alarm it is — the point to consider safe harbour advice or a small business restructuring rather than hoping the creditor loses interest.
The Founder’s Checklist
Treat any Form 509H as a drop-everything event: diarise day 21 from service immediately, get advice in the first week, and decide deliberately between paying, negotiating a documented compromise, and filing a section 459G application with a complete affidavit. Before any demand ever arrives, confirm your registered office details with ASIC and ensure the mail gets opened. Our business setup and structuring practice treats that housekeeping as core infrastructure, and as startup lawyers in Sydney we have stood on both sides of the 21-day clock — it runs much faster than it sounds.
This article is general information only, not legal advice — whether a debt is genuinely disputed and whether a set-aside application will succeed depend entirely on the facts and the evidence filed in time. If your startup has been served with a statutory demand, get in touch immediately.
