What was announced
USPS Postal Explorer lists a time-limited price period beginning October 4, 2026 and continuing through January 17, 2027. It provides final price files and a Notice 123 document for the period.
What to review
Use the file for the shipment date and product you are pricing. Check the service, weight, zone, and pricing category instead of applying one assumed fee to all USPS packages.
Review routing and checkout assumptions for orders shipped during the period. Retain the prior and time-limited files so the difference can be explained.
Official references
Source checked .
An educational reference prepared by Kadima Logistics. Announcements can be revised. Check the source and your agreement for the rules that apply to your shipment.