Retainage explained: how it works and how subcontractors protect cash flow

Retainage (or retention) is a percentage held back from each progress payment until the project, or your part of it, is complete. The owner holds it from the GC, and the GC usually holds it from subcontractors. On a long job, retainage can tie up a big part of your profit for months.

How retainage works

If your subcontract has 10% retainage and you bill $50,000 in a month, you'd be paid $45,000 (minus any other deductions) and $5,000 goes into retainage. Retainage is typically released at substantial completion, final completion, or after closeout documents are accepted, depending on the contract. Some contracts reduce retainage after the job is half complete.

What governs it

• The contract. Your subcontract sets the percentage, reductions and release conditions. Watch for "pay-when-paid" or "pay-if-paid" language tied to the owner's release.
• State law. Many states have prompt payment and retainage laws for public and sometimes private projects that limit the percentage or require timely release. Rules differ widely, so check your state.
• Federal jobs. On federal construction, FAR 32.103, Progress payments under construction contracts says retainage may be withheld when satisfactory progress hasn't been achieved, that it should not be used as a substitute for good contract management, and that funds shouldn't be withheld without cause. Payment terms are in FAR 52.232-5, Payments under fixed-price construction contracts.

Price the cost of carrying it

If 10% of a $400,000 subcontract is held for six months after you finish, that's $40,000 you're financing. Consider the cost of that money (your line-of-credit rate, for example) on long jobs and include it in your job costs or markup.

How to get it released faster

1. Track retainage by job and by pay application.
2. Start closeout documents (warranties, O&M data, attic stock, as-builts) before you finish.
3. Request a line-item release when your scope is complete, if the contract allows it.
4. Send a written retainage invoice with lien waivers as required.
5. Follow up in writing and know your state's prompt payment and lien deadlines.

Negotiate before you sign

Ask for reduced retainage after 50% completion, release at completion of your scope (not the whole project), and a firm release date. Clearly written proposal clarifications can note your retainage assumptions. Bonded subcontractors sometimes negotiate lower retainage (see bid, performance and payment bonds).

This is general information, not legal advice. For specific contract or lien questions, talk to a construction attorney in your state.

Published October 27, 2026. We do not use affiliate links on this page; see our Affiliate Disclosure.