Payment Claim Date Calculator — Security of Payment (AU)
By Cal Crane — founder, TradeControl; Operations Manager, Barzen Projects.
General information only — not legal advice.
Pick your state and the date you served (or will serve) your payment claim. The calculator returns the statutory payment-schedule deadline, the default payment due date for a subcontractor, and your key adjudication windows — counted in each Act's business days, which exclude weekends and a December–January shutdown window that differs by state.
Building and Construction Industry Security of Payment Act 1999 (NSW)
Read the full state guides
The claim is only as strong as the record behind it. Same-day signed day labour dockets and a daily site diary are the evidence layer under every payment claim.
Sources
- NSW: Building and Construction Industry Security of Payment Act 1999 (ss 4, 11, 13, 14, 17, 21) — legislation.nsw.gov.au/view/whole/html/inforce/current/act-1999-046
- VIC: Building and Construction Industry Security of Payment Act 2002, consolidation incorporating the 15 April 2026 reforms (ss 4(1), 12, 14A–14D, 15, 18, 22) — legislation.vic.gov.au/in-force/acts/building-and-construction-industry-security-payment-act-2002
- QLD: Building Industry Fairness (Security of Payment) Act 2017 (sch 2, ss 73, 75, 76, 79, 85) and QBCC Act ss 67U/67W — legislation.qld.gov.au/view/whole/html/inforce/current/act-2017-043
- WA: Building and Construction Industry (Security of Payment) Act 2021 (ss 4(1), 20, 23, 24, 25, 28, 37) — legislation.wa.gov.au (consolidation as at 1 Feb 2024)
Statutory figures verified against the sources above on 4 July 2026.
Timeframes move with amendments and your contract can change what applies to you — for anything in dispute, speak to a construction lawyer before you rely on a date.
TradeControl provides commercial support tools only. It does not provide legal advice.