Permanent Note: On May 1, 2006, the Interim Internal Purchasing Guidelines were replaced by the Postal Service’s Supplying Principles and Practices (SPs and Ps).
Effective February 10, 2025 the following parts and sections of the SPs and Ps have been revised:
2 — Evaluate Sources
7 General Practices
9 — Solicitations Provisions
10 — Contract Clauses