SF 25A, the Payment Bond, is a legal document used for the protection of individuals and entities that supply labor and materials in various construction projects. This form is required under 40 USC Chapter 31, Subchapter III, Bonds. It serves as a guarantee that the principal (typically a contractor or a company) will make timely payments to subcontractors, laborers, and material suppliers as specified in a construction contract. The Payment Bond ensures that the project's participants are compensated appropriately. OMB Control Number: 9000-0045.