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Recovering Retention Money Through the Security of Payment Act

Retention money stuck with your head contractor? Learn how Australia's Security of Payment laws give you a fast-track remedy.

Updated 30 May 2026 5 min read By PayClaim

Retention money is a fact of life in construction. Your head contractor holds back 5–10% of every invoice as security, promising to release it at project completion. The problem? “Completion” can mean anything, and you’re left waiting months—or years—without access to your own cash.

If you’re a subcontractor or small builder owed retention, Australia’s Security of Payment legislation gives you a practical tool to recover it. You don’t need to wait for the project to finish. You don’t need a lawyer. You can lodge a payment claim under your state’s SOP Act and force the issue into adjudication if your head contractor won’t pay.

What Is the Security of Payment Act, and How Does It Help?

Every Australian state and territory has its own Security of Payment (or similar) legislation. New South Wales has the Security of Payment Act 1999. Queensland uses the Building Industry Fairness (Security of Payment) Act 2017. Victoria has the Security of Payment Act 2002. Western Australia, South Australia, Tasmania, and the ACT have their own versions too.

These laws exist for one reason: to keep cash flowing through the construction supply chain. They say contractors and subcontractors can’t be left hanging indefinitely. If you’re owed money, you have the right to make a claim, get a fast decision, and enforce it—without going to court or waiting years.

Retention money is claimable under these laws. You don’t have to wait for practical completion or defects liability to expire. If it’s in your contract and you’re entitled to it, you can claim it now.

How the Process Works (In Plain Terms)

Here’s the straightforward sequence:

  1. You lodge a payment claim – a formal written claim under your state’s SOP Act, setting out what you’re owed and why.
  2. The head contractor has a set time to respond – typically 10 business days in NSW, with variations in other states – by issuing a “payment schedule” that either agrees or disputes your claim.
  3. If they don’t respond or dispute unfairly, you can apply for adjudication – a fast, independent review by an adjudicator appointed under the Act.
  4. The adjudicator makes a binding decision within tight timeframes (usually 10–20 business days).
  5. You can enforce the decision through the courts if the head contractor doesn’t pay.

The beauty of this process? It’s fast. It bypasses litigation. It doesn’t require you to prove your case beyond doubt—the head contractor has to justify why they’re not paying. And many debtors choose to settle rather than face the formality and cost of adjudication.

Why Retention Money Is Often Recoverable

Retention clauses exist to protect the head contractor against defects. They’re not meant to be indefinite security or a free loan to the contractor. Courts and adjudicators take a dim view of contractors who hang onto retention unreasonably.

Key points that matter when claiming retention:

  • Your contract must clearly set out the retention percentage and release conditions.
  • If practical completion has been reached, or the retention period has expired, your claim is strong.
  • If the contractor is withholding retention for “defects” they haven’t specified or quantified, that’s a weak excuse.
  • If retention wasn’t in the original contract or variation, you may have no claim—but it’s worth checking.
  • If you’re claiming retention that’s already been released, you’ve got nothing. Make sure you’re claiming money you actually haven’t received.

The legislation assumes you’re entitled to be paid for work done and materials supplied. The burden is on the head contractor to prove otherwise. That’s a significant shift in your favour.

Getting Started: What You Need to Do

You don’t need a lawyer to lodge a payment claim under the Security of Payment Act. You can do it yourself, and it costs only a flat fee of AUD $79 to file a payment claim through PayClaim—no hidden costs, no hourly rates.

To prepare your claim, gather:

  • Your contract and any variations.
  • Invoices and payment records showing what you’ve invoiced and what’s been paid.
  • Evidence of work done (timesheets, site photos, delivery dockets, purchase orders).
  • Your head contractor’s most recent payment or communication.
  • The specific retention amount and release condition from your contract.

Your claim needs to be clear: state exactly how much you’re claiming, what it’s for, and why you’re entitled to it. Reference your contract. Keep it factual. The adjudicator doesn’t care about tone; they care about whether the claim is properly made and whether you’re owed the money under the contract.

The Real Value: Leverage and Speed

Even if you never reach adjudication, lodging a claim under the SOP Act sends a message. Your head contractor now knows you’re serious, you understand your rights, and you’re willing to pursue them. Many contractors will settle retention claims rather than defend them formally.

And if they do defend, the adjudication process is genuinely fast. You’re not waiting 18 months for a court hearing. You’re looking at weeks. That means you can get a binding decision, and if the contractor still doesn’t pay, you can move to enforcement without another year of limbo.

Retention money is your money. It’s security for the contractor, not a gift. If you’re owed it and the contractor is sitting on it, the Security of Payment Act is the tool designed for exactly this situation. Use it.

Ready to prepare your own payment claim?

PayClaim helps Australian tradies and subcontractors prepare a Security of Payment Act payment claim online. Flat $79. No subscription. No big debt-collector commission. PayClaim is not a law firm and does not guarantee any outcome.

Start a Claim — $79

Information on this page is general only and does not take account of your individual circumstances. PayClaim prepares and serves payment claim documents based on the information you provide. PayClaim is not a law firm and does not provide legal advice, adjudication representation, debt collection or court enforcement. Payment outcomes are not guaranteed.

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