The agency’s Office of Inspector General reported instances of multi-carrier software overcharging merchants for Postal Service shipping.
- Multi-carrier shipping platforms sometimes advertised higher-than-required U.S. Postal Service rates to merchants over the course of 15 months, which may have lost the agency business, according to an OIG report published July 2.
- The report assessed the Merchant Rate Card program’s postage accuracy for packages from November 2023 to January 2025. The program facilitates discounted Postal Service rates to shippers, often small and medium-sized businesses, through third-party platforms where businesses can choose from multiple delivery providers.
- Issues such as one platform’s software incorrectly rounding package weight led to instances of users being overcharged for USPS shipping, “which could have swayed merchants to choose competitors and caused the Postal Service to lose revenue,” the OIG said.
