USPS Price Changes

For questions or comments on USPS® changes, please contact the PB Support team at

June 2019 USPS Changes

The following 2019 rules changes took effect June 23, 2019 and do not change the prices of USPS services. The new rules apply to all USPS shipments created with a ship date of June 23, 2019 or later, including shipments with FUTURE_SHIPMENT_DATE of June 23, 2019 or later:

  • Dimensional Weight Changes

    The dimensional weight divisor for Priority Mail packages has been adjusted from 194 to 166.

    Priority Mail, Priority Mail Express, and Parcel Select packages that exceed one cubic foot (1,728 cubic inches) are now priced at the greater of the actual weight and the dimensional (DIM) weight, for all zones. Previously, the DIM weight applied only to Priority Mail packages delivered to zones 5-9.

    Note: Shippers are encouraged to provide dimensions for all packages, especially for packages with dimensions that exceed 1 cubic foot.

  • Weight Limit for First-Class Mail International Large Envelope

    The weight limit for First-Class Mail International (FCMI) has been adjusted from 64 ounces to 15.994 ounces. The Shipment and Rates APIs return an error if the weight exceeds this limit for FCMI. For shipments greater than 15.994 ounces, shippers are advised to instead use the First-Class Package International Service (FCPIS).

  • Priority Mail Open & Distribute Shipments to SCF, ASF, ADC or NDC Require the NASS code

    PMOD labels that are addressed to an SCF, ASF, ADC or NDC destination must reflect the National Air and Surface System (NASS) code, along with the facility name and state.

    The NASS code can be found in the Drop Entry Point View File available at the USPS FAST Website: There are no changes to shipments addressed to DDU.

2019 USPS Price Changes

The USPS 2019 price changes took effect January 27, 2019. Pitney Bowes updated the Shipping APIs production environment January 27, 2019 at 12:00 AM EST.

The new USPS prices include the following major changes:

  • USPS has merged Commercial Plus Pricing (CPP) and Commercial Base Pricing (CBP) into one discount level called “Commercial Pricing.”

  • The existing ounce-based pricing structure for USPS First-Class Package Service and First-Class Package Return Service has changed to a zone-based pricing structure.

    Note: The PB Shipping APIs now return zone information for First-Class Package Service and First-Class Package Return Service. The APIs return the information in the rates.destinationZone field in responses to rate and shipment requests.

  • Balloon pricing for USPS Priority Mail and Parcel Select services has been eliminated.

    Note: USPS deferred Dimensional weight-related changes to June 23, 2019.

For a more detailed list of USPS changes, see Rate Change Central.

In addition to the USPS changes, some Shipper Rate Plan IDs (X-PB-Shipper-Rate-Plan) have also changed. The PB Support Team has already notified everyone affected by that change.

2018 USPS Price Changes

The USPS 2018 price changes went into effect January 21, 2018 and reflected an average 3.9 percent increase across shipping services as compared to 2017 rates. The changes affected both domestic and international shipping, including Priority Mail, Priority Mail Express, and Parcel Select.

As part of the 2018 changes, First-Class Mail International (FCMI) shipments can contain only documents, not goods. When using FCMI, you must set the customs.customsInfo object’s reasonForExport field to DOCUMENTS. Goods that were formerly shipped via FCMI can instead be shipped via First-Class Package International Service (FCPIS) and other services.

For more information on the 2018 rate changes, see USPS Rate Changes for January 2018.