Payments

Security of Payment: progress-claim traps for tradies

Security of Payment laws give tradies a fast route to getting paid, but only if your claims are done right. Here are the basics and the traps that sink claims.

Updated 2026-06-07 · General guidance, not legal advice

Security of Payment laws exist because tradies and subbies were too often doing the work and then waiting, or never getting paid at all. The laws give you a fast track to the money you are owed for work already done. They are powerful, but they are technical, and small mistakes on a claim can cost you the protection. This is general guidance, not legal advice, so check your own state's act before relying on it.

What the laws are for

Every state and territory has its own Security of Payment (SOP) act. The detail varies, but the purpose is the same: make sure people who do construction work get progress payments without having to sue. The acts do two main things:

  • They give you a statutory right to progress payments for construction work, even if the contract is silent on it.
  • They set up a fast adjudication process so a payment dispute can be decided by an independent adjudicator in weeks, not the years a court case can take.

The catch is that these rights come with strict steps and tight deadlines. Get the steps right and you have a strong, fast tool. Miss a deadline and you can lose it.

How a claim flows

The shape is similar across states, even though the names and timeframes differ:

  1. You serve a payment claim for work done, usually each progress stage. In some states this must reference the act or use particular wording.
  2. The other side serves a payment schedule if they intend to pay less than claimed, within the time the act allows. The schedule has to say how much they will pay and why.
  3. If they do not schedule, or do not pay the scheduled amount, you can pursue the debt or apply for adjudication.
  4. An adjudicator decides how much is payable, quickly, based on the claim and response.

The payment schedule step is where a lot of money changes hands. In several states, if the paying party fails to serve a payment schedule in time, they can become liable for the full amount you claimed. That is a powerful lever for you, and a serious trap for anyone who pays late and ignores claims.

The traps that lose claims

Most lost SOP claims are not lost on the merits. They are lost on process. Watch for these:

  • Missing the reference date or claiming too often. The acts generally entitle you to make a claim from set reference dates. Claiming at the wrong time, or twice for the same date, can invalidate a claim in some states.
  • Vague scope on the claim. An adjudicator can only value what you can describe. A claim that does not clearly identify the work done is easy to knock down.
  • Late service. Both serving your claim and responding to a schedule are time-bound. Diary the deadlines the moment a job starts.
  • Wrong wording or labelling. Some states need the claim to state it is made under the act. A formatting miss can cost you the statutory route.
  • No paper trail for variations. If extra work was agreed verbally, valuing it in a claim gets messy fast. Written, accepted variations make claims far stronger.

Why your quote and records do the heavy lifting

Almost every SOP trap traces back to weak records: unclear scope, undocumented variations, fuzzy dates. The defence is boring but effective. Quote with a clear scope, log every variation in writing with a date and an acceptance, and keep your progress claims tied to that scope. When a claim is challenged, you want a clean, dated trail from quote to variation to claim.

That is exactly the kind of record-keeping a quoting and job tool should do automatically: each progress claim linked to the agreed scope, variations stamped and accepted, dates captured as you go. You stay focused on the build, and if a payment ever goes to adjudication, the paperwork already backs you up. For the specifics of timing, wording and exclusions in your state, check your state's act or get proper legal advice before you act.

Frequently asked questions

What is the Security of Payment Act?
Security of Payment (SOP) is the common name for state and territory laws that give people who do construction work a fast, low-cost way to get paid. Each state has its own version with its own detail, but they share an aim: stop head contractors and principals sitting on money owed for work already done. They cover progress payments and set up an adjudication process to resolve payment disputes quickly.
Who can use Security of Payment laws?
Broadly, anyone who carries out construction work or supplies related goods and services under a construction contract, which covers most subbies and tradies. There are some exclusions, for example certain residential owner-occupier contracts in some states, and the scope differs by state. Check your own state's act or get advice before you rely on it.
How does an adjudication work?
If a payment claim is not paid, the claimant can apply to have the dispute decided by an independent adjudicator within tight statutory timeframes. The adjudicator reviews the claim and any response and decides how much is payable. It is designed to be quick and is about cash flow now, not the final word on every contractual argument.
What is a payment schedule?
When you serve a payment claim, the other side can reply with a payment schedule that says how much they propose to pay and why, if it is less than claimed. If they do not provide a payment schedule within the time allowed, in several states they can become liable for the full claimed amount. Missing that deadline is a costly mistake for the party paying.
Do I have to label my invoice a payment claim?
It depends on the state. Some states require or benefit from specific wording or a reference to the relevant act on the claim, while others treat a compliant invoice as a payment claim by default. Because the labelling and timing rules differ, check your state's requirements so a simple formatting miss does not cost you your rights under the act.

Let your quoting tool handle the fine print

Karven bakes Australian quoting basics into every document: GST done right, clear deposit and progress-claim terms, your ABN and licence on the page. Spend the time on the job, not the paperwork.