Management Instruction FM-640-2023-1 - Postal Bulletin 22655 - Contents Supply Management Interest Rate on Contract Claims The Postal Service™ periodically publishes the interest rate payable on a claim dec..." /> Management Instruction FM-640-2023-1 - Postal Bulletin 22655 - Contents Supply Management Interest Rate on Contract Claims The Postal Service™ periodically publishes the interest rate payable on a claim dec..." />