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Retainage Calculator

Washington · WA

Washington retainage law and prompt-payment rules

Public retainage often sits in a retainage fund until claims close. Start in the code: RCW 60.28.011; 39.76.020.

Use this page when you are bidding or billing a job in Washington. Public retainage is listed as 5%; private as No statutory cap (recent public cap is 5%). Typical public release is 60 days after notice of completion.

Then open the retainage calculator for the dollars, or the G702-style pay application if you need line-by-line previous certificates.

Where is the job?
State and project type drive retainage caps and payment clocks

Caps and clocks change with project type, contract value, and the year you signed. Planning table only — confirm the current statute before you rely on a date.

Washingtonprivate work
Retainage capNo statutory cap (recent public cap is 5%)
Typical retainage releasePer contract
Interest / penalty1% monthly on public late pay
Owner / agency to primePublic: 30 days after invoice
Prime to sub (after prime paid)10 days after the prime is paid
Start in the codeRCW 60.28.011; 39.76.020

Public retainage often sits in a retainage fund until claims close.

Summaries compiled for planning. This site is not a law firm.

Run the retainage dollars

Related: Retainage calculator · Pay application · Schedule of values · How to fill out G702

Questions this page answers

What is the retainage cap in Washington?
On public work the planning cap is 5%. On private work it is No statutory cap (recent public cap is 5%). Bid documents and the subcontract still control if they are stricter.
When is retainage released in Washington?
Public jobs typically release 60 days after notice of completion. Private jobs: Per contract. Confirm the contract date — several states changed caps in 2025–2026.
How fast must a prime pay a sub in Washington?
10 days after the prime is paid. Owner or agency to prime is Public: 30 days after invoice. Late-pay interest: 1% monthly on public late pay.

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