USPS Price Changes

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Latest Changes

For details on the latest USPS® changes, please see:

For questions or comments on USPS changes, please contact Client Support at

Oct 3 to Dec 25, 2021 Temporary Rate Change

The USPS temporary rate change goes into effect October 3, 2021, and remains in effect through December 25, 2021. For affected shipments, see

The Sandbox Environment has been updated with the rate change.

The Production Environment will be updated with the rate change on September 25, 2021 and will affect shipments with a ship date of October 3, 2021, or later.

2021 USPS Price Changes

The USPS 2021 mid-year price change went into effect August 29, 2021. For details, see

The USPS 2021 January price change took effect January 24, 2021.

2021 New Rounding Rules

New USPS rounding rules took effect January 9, 2021. The new rules round dimensions to 2 decimal places (e.g. 0.12) instead of 3 decimal places (e.g. 0.123) when determining price and rates.