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What is retainage? Tracking withheld construction payments
Retainage is the portion of a construction payment held back under the project’s payment arrangements. Tracking it separately helps a contractor distinguish an ordinary unpaid invoice from money awaiting a release decision.
This guide describes common bookkeeping practice, not a legal or regulatory requirement.
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General information, not legal or tax advice.
Read the payment schedule before coding an invoice
CSLB recommends that a home improvement contract identify work segments, their prices, phase timing and the subcontractors, laborers and suppliers involved. For bookkeeping, connect each payment application to that schedule. Record the amount billed, the amount withheld and the cash received without losing the original gross billing detail.
Keep receivable and payable retention distinct
A contractor may track retention owed by a customer separately from retention withheld from a subcontractor. Maintain supporting schedules by project and counterparty, then reconcile each schedule to its ledger balance. This common construction accounting practice makes open retention visible without treating it as available cash. Have your CPA decide the tax timing of those balances.
Treat federal withholding as a contract-specific decision
FAR 32.103 addresses federal construction contracts where satisfactory progress has not been achieved. It says retainage should not replace good contract management and funds should not be withheld without cause. The contracting officer makes the determination case by case. These federal provisions do not establish California retention caps or release deadlines.
Sources: Federal Acquisition Regulation 32.103, Progress payments under construction contracts
Match the release paperwork to actual payment
CSLB distinguishes progress-payment releases from final-payment releases. A conditional final release is binding only with evidence of payment, such as an endorsed check paid by the bank or written acknowledgment. Keep the release, payment application and payment evidence together. Ask the project adviser or attorney to resolve release questions before changing the retention status.
Sources: CSLB, Conditional and Unconditional Waiver and Release Forms
Reconcile the closeout balance before clearing it
Review pending change orders, disputed billing, release documents and receipts against the retention schedule. When funds arrive, apply them to the correct project balance instead of recording a fresh sale. A signed closeout document and a posted bank receipt serve different purposes; preserve both in the job file.
Sources: read the payment schedule before coding an invoice
Payment applications and contractor records
Make retention visible in your construction books
Tidwell organizes billing, receipts and retention schedules for contractors and works with the client’s CPA on accounting and tax treatment.