Supply Management

Interest Rate on Contract Claims

In the Postal Bulletin, the Postal Service™ periodically publishes the interest rate payable on a claim decided in a supplier‘s favor under the Contract Disputes Act of 1978. This rate also applies for late payments to suppliers under the Prompt Payment Act, as amended.

The interest rate effective for the 6-month period of July 1, 2026, to December 31, 2026, is 4.75 percent.