Bid-Day Checklist: Late Federal Payment Interest Under FAR 32.907
Managing cash flow on federal construction projects requires estimators, trade subcontractors, and prime bidders to understand the statutory protections that govern delayed agency disbursements. Under 32.907 Interest penalties. | Acquisition.GOV, the government is required to pay interest penalties automatically when certain payment criteria are satisfied. Reviewing these payment mechanics on bid day helps your team build accurate cash flow schedules, establish proper accounting controls, and enforce penalty remedies if payments fall behind schedule.
Check 1: Verify Criteria for Automatic Interest Payments
Under FAR 32.907(a), late payment interest is paid automatically by the designated payment office without requiring a separate request from the contractor. However, this automatic obligation only triggers when all applicable conditions are satisfied. Estimators and contract administrators should confirm these baseline conditions during proposal review:
- The designated billing office received a proper invoice, adhering to submission rules established under proper invoice procedures.
- The government processed a receiving report or other documentation authorizing payment, and there was no disagreement over quantity, quality, or contractor compliance with any contract requirement.
- For a final invoice, the payment amount is not subject to further contract settlement actions between the government and the contractor.
- The designated payment office released funds after the established due date.
- For interim payments on cost-reimbursement contracts for services, payment occurred more than 30 days after the designated billing office received a proper invoice.
Check 2: Review Prompt Payment Discount Rules
Federal contracts may contain provisions offering prompt payment discounts in exchange for accelerated disbursement. As outlined in FAR 32.907, if the government takes a prompt payment discount improperly, the designated payment office must pay an interest penalty automatically without request from the contractor.
The calculation period for an improperly taken discount is strictly defined. The interest penalty is calculated on the amount of discount taken for the period beginning with the first day after the end of the discount period through the date when the contractor is paid. Trade estimators should ensure project accounting systems compare remittance amounts against invoice discount windows to immediately identify unauthorized deductions.
Check 3: Track Deadlines for Additional Penalty Demands
If the designated payment office fails to disburse owed interest, FAR 32.907(c) allows contractors to demand an additional penalty amount beyond the standard interest penalty. Estimators and billing teams must log these exact thresholds:
- The government owes an interest penalty of $1 or more.
- The designated payment office does not pay the interest penalty within 10 days after the date the invoice amount is paid.
- The contractor submits a written demand to the designated payment office postmarked not later than 40 days after the date the invoice amount was paid.
The written demand must include specific supporting data: an assertion that late payment interest is due under a specific invoice, a request for all overdue late payment interest and additional penalties, an attached copy of the invoice, and a statement confirming that payment of the principal was received along with the receipt date. The government must not request additional data.
If the written demand lacks a postmark or if the postmark is illegible, the designated payment office annotates it with the date of receipt, provided the demand is received on or before the 40th day after payment. If the payment office fails to make that annotation, the demand's validity is determined by the date the contractor placed on the document, provided that date is no later than the 40th day after payment.
Check 4: Identify Exclusions for Disagreements and Withholdings
Under FAR 32.907(d), the payment office will not pay interest penalties if payment delays stem from disagreements between the government and the contractor concerning the payment amount, contract compliance, or amounts temporarily withheld or retained under contract terms. Subcontractors and general contractors monitoring progress retainage under FAR 32.904 payment due dates should note that retained funds do not accrue prompt payment penalties while legitimate contract holds apply. Disputed claims and any interest payable on disputes must be resolved under the contract Disputes clause.
Check 5: Note Rules on Fund Availability and OMB Regulations
Government agencies cannot waive interest obligations due to internal budgeting shortages. Under FAR 32.907(f), the temporary unavailability of funds to make a timely payment does not relieve an agency from the obligation to pay interest penalties. Furthermore, under FAR 32.907(e), the government computes all interest penalties in accordance with OMB prompt payment regulations at 5 CFR Part 1315.
Sources
Published November 9, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.