subsectionUpdated April 16, 2026

    FAR 52.242-5Payments to Small Business Subcontractors.

    Plain-English Summary

    FAR 52.242-5, Payments to Small Business Subcontractors, requires prime contractors to give the Contracting Officer prompt written notice when they make a reduced payment, an untimely payment, or fail to make a payment to a small business subcontractor that is otherwise due under the subcontract. The clause defines two key terms—"reduced payment" and "untimely payment"—and ties the notice obligation to situations where the Government has already paid the prime contractor for the supplies or services at issue. It also sets a specific timing rule: the contractor must notify the Contracting Officer no later than 14 days after the subcontractor became entitled to payment and the contractor made a reduced or late payment, or failed to pay and the payment is now late. The notice must include the reasons for the reduced or untimely payment. In practice, this clause is designed to improve transparency, protect small business subcontractors, and give the Government visibility into prime contractor payment performance on subcontracted work that has already been funded by the Government.

    Key Rules

    Applies to paid subcontract work

    The clause applies only to supplies and services for which the Government has already paid the prime contractor. It is aimed at payment problems involving small business subcontractors on work that has been funded upstream.

    Defines reduced payment

    A reduced payment is any payment less than the amount agreed to in the subcontract, as long as the subcontract terms and conditions otherwise call for that amount. The issue is not just lateness, but underpayment.

    Defines untimely payment

    An untimely payment is one that is more than 90 days past due under the subcontract terms and conditions. The clause treats a payment as untimely once it exceeds that 90-day threshold.

    Notice required within 14 days

    The contractor must notify the Contracting Officer in writing no later than 14 days after the subcontractor was entitled to payment and the contractor made a reduced or untimely payment, or failed to pay and the payment is now untimely. This is a short, mandatory reporting window.

    Notice must explain the reason

    The contractor must include the reason or reasons for the reduced or untimely payment in the notice. A bare statement that payment was reduced or late is not enough.

    Triggered by small business status

    The reporting obligation applies specifically to small business subcontractors. The clause does not create the same notice requirement for non-small-business subcontractors under this provision.

    Responsibilities

    Contractor

    Track subcontractor payment status, determine when a small business subcontractor is entitled to payment, and provide written notice to the Contracting Officer within 14 days if the contractor makes a reduced payment, makes an untimely payment, or fails to pay and the payment becomes untimely. The contractor must also state the reasons for the payment issue in the notice.

    Contracting Officer

    Receive and review the contractor’s notice, monitor contractor payment performance to small business subcontractors, and take any follow-up action allowed under the contract or agency procedures if the notice suggests a payment compliance problem.

    Small Business Subcontractor

    This clause does not impose duties on the subcontractor, but the subcontractor is the party protected by the reporting requirement and may be affected by the contractor’s reduced or late payment.

    Agency

    Use the clause where prescribed and maintain oversight of contractor compliance with subcontract payment reporting requirements, especially where Government funds have already been paid to the prime contractor.

    Practical Implications

    1

    Prime contractors need internal controls to identify when a small business subcontractor is due payment and to flag any underpayment or late payment quickly enough to meet the 14-day notice deadline.

    2

    The clause is not just about late payments; underpayments also trigger reporting, so contractors should review invoice disputes, retainage issues, offsets, and partial payments carefully.

    3

    Because the notice must explain the reason for the payment problem, contractors should document the basis for any reduction or delay at the time the issue arises, not after the fact.

    4

    Contracting Officers should treat these notices as compliance signals and look for patterns that may indicate cash-flow problems, invoice disputes, or subcontract administration weaknesses.

    5

    A common pitfall is assuming the 90-day untimely-payment definition is the only trigger; the clause also requires notice much earlier when a reduced payment is made, even if the payment is not yet 90 days overdue.

    Official Regulatory Text

    As prescribed in 42.1504 , insert the following clause: Payments to Small Business Subcontractors (Jan 2017) (a) Definitions . As used in this clause- Reduced payment means a payment that is for less than the amount agreed upon in a subcontract in accordance with its terms and conditions, for supplies and services for which the Government has paid the prime contractor. Untimely payment means a payment that is more than 90 days past due under the terms and conditions of a subcontract, for supplies and services for which the Government has paid the prime contractor. (b) Notice . The Contractor shall notify the Contracting Officer, in writing, not later than 14 days after- (1) A small business subcontractor was entitled to payment under the terms and conditions of the subcontract; and (2) The Contractor- (i) Made a reduced or untimely payment to the small business subcontractor; or (ii) Failed to make a payment, which is now untimely. (c) Content of notice . The Contractor shall include the reason(s) for making the reduced or untimely payment in any notice required under paragraph (b) of this clause. (End of clause)