Security of Payment is not one national law. There are eight separate Acts, and the claim format, the deadlines, the adjudication trigger and the enforcement route all change at every state line. On a multi-state job, the single biggest risk is running the wrong state's process and serving a claim that is ineffective even when the debt is real. Here is the cross-border trap, and the right page for each jurisdiction.
New to how this works? Start with Security of Payment explained.
The cross-border trap
SOP laws generally cannot be contracted out of, so a contract pointing one way and the statute another will not save you. The practical rule:
- Identify where each package of work is physically carried out, not just where the head contract was signed.
- Use that state's correct claim format and timing.
- Do not assume a NSW-style payment-schedule mechanism exists everywhere — the NT and legacy-WA contracts work differently.
- Check whether the work is excluded (mining and resource extraction in some states).
- Treat each state's work as a separate compliance track.
Compare the states at a glance
| Where | Act | Model | Payment schedule | Apply for adjudication |
|---|---|---|---|---|
| NSW | SOP Act 1999 | East Coast | 10 business days | ~10 business days (after the schedule) |
| VIC | SOP Act 2002 | East Coast | 10 business days | ~10 business days (after the schedule) |
| QLD | BIF Act 2017 | East Coast | 15 business days | 20-30 business days |
| WA | SOP Act 2021 | East Coast | 15 business days | 20 business days |
| SA | SOP Act 2009 | East Coast | 15 business days | 10 business days (after notice) |
| TAS | SOP Act 2009 | East Coast | 10 (20 owner-occupier) | 10 business days (after notice) |
| ACT | SOP Act 2009 | East Coast | 10 business days | 20 business days (after due date) |
| NT | Construction Contracts Act 2004 | Payment dispute | n/a | 65 working days (from the dispute) |
The adjudication trigger differs by state — after the schedule, after the due date, after a notice, or (NT) from when the dispute arises — so use this to compare at a glance, then read the per-state page for your exact clock and contract-date rules.
Find your state
- NSW Security of Payment — the model the other East Coast states copied.
- VIC Security of Payment
- QLD BIF Act and Project Trusts — plus the project and retention trust framework.
- WA Security of Payment — two models, split by contract date.
- SA Security of Payment
- TAS Security of Payment
- ACT Security of Payment — reformed in 2024.
- NT Security of Payment — the odd one out, an old WA-style payment-dispute model.
Common mistakes
- Serving one claim format across a multi-state job.
- Assuming the NT or a legacy-WA contract works like NSW — they do not.
- Using the wrong WA model for the contract date.
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