Effective 19 de mayo de 2005, these Interim Internal Purchasing Guidelines replace all issues of earlier Postal Service purchasing regulations contained in Issues 1–3 of the Postal Service Purchasing Manual and all purchasing directives prior to the Purchasing Manual. The regulations that now apply to Postal Service supply chain functions are contained in 39 CFR Part 601.

These Interim Internal Purchasing Guidelines apply to all solicitations issued on and after 19 de mayo de 2005. In some cases, a solicitation provision or contract clause may reference a previous purchasing directive. In such cases, the referenced directive will apply as provided in the provision or clause, but not otherwise.

Nota: On 01 de mayo de 2006, the Interim Internal Purchasing Guidelines were replaced by the Postal Service's Supplying Principles and Practices (SPs and Ps).

SPs and Ps (PDF) - February, 2013
SPs and Ps (HTM) - February, 2013
SPs and Ps (PDF) - November, 2012
SPs and Ps (HTM) - November, 2012
SPs and Ps (PDF) - December, 2011
SPs and Ps (HTM) - December, 2011
SPs and Ps (PDF) - January, 2011
SPs and Ps (HTM) - January, 2011
SPs and Ps (PDF) - 01 de febrero de 2010
SPs and Ps (HTM) - 01 de febrero de 2010
SPs and Ps (PDF) - August 2009
SPs and Ps (HTM) - August 2009
SPs and Ps (PDF) - 31 de diciembre de 2008
SPs and Ps (HTM) - 31 de diciembre de 2008

Interim Internal Purchasing Guidelines (IIPG)
IIPG (PDF)
IIPG (HTM)

Issue 1
January 1997, updated with Postal Bulletin revisions through 15 de noviembre de 2001.
PM Issue 1 (PDF)
PM Issue 1 (HTM)

Issue 2
January 2002, incorporates Postal Bulletin changes to Issue 1 plus contains numerous new and significant changes in purchasing policy.
PM Issue 2 (PDF)
PM Issue 2 (HTM)

Issue 3
25 de diciembre de 2003, updated with Postal Bulletin revision through 01 de octubre de 2004
PM Issue 3 (PDF)
PM Issue 3 (HTM)

If you wish to view Publication 41, USPS Procurement Manual, the policies and procedures of which were replaced by PM Issue 1 on 1/27/2000, follow the link for Publication 41 or Publication 41 text-only file.