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Mail Classification Schedule (MCS)
Current MCS
The Mail Classification Schedule describes every product offered to the public by the Postal Service and serves as a standard reference when reviewing ongoing postal products. The document includes a “Revisions History” section, describing changes made in chronological order. It also contains copies of both the Market Dominant and Competitive product lists. A draft working copy of the Mail Classification Schedule is available here. It is typically updated bi-annually and represents the most current Postal Service product offerings.
Historical MCS
On an annual basis, the Mail Classification Schedule in redline legislative format is retired to the archive appearing here. All redline legislative changes are incorporated into a new baseline Mail Classification Schedule and posted in this section for legislative markup in the following year. The information provided therein is obsolete and is provided for reference only.
Historical MCS
A historical copy of the Domestic Mail Classification Schedule is available here. The Domestic Mail Classification Schedule is the predecessor to the Mail Classification Schedule. It governed rates and classifications of domestic postal products prior to enactment of the Postal Accountability and Enhancement Act (PAEA), Pub. L. 109-435, 120 Stat. 3198, December 20, 2006.