USPS checkout rates differ from actual postage
USPS rates shown at checkout differ from what USPS actually charges, so shipping is under- or overcharged.
Tier I · Proven The best-established problems.
6 public reports · first reported 8 May 2022 · last reported 18 September 2026
What's going wrong
Store owners using this WordPress shipping plugin report that the postage shown to customers at checkout does not match what USPS charges. Some see quotes several dollars lower than the real label cost, which eats into margins. Others see quotes far above the USPS website price, so customers overpay or merchants must issue refunds. The gap appears with weight-based pricing, box dimensions, Media Mail and ground services, and sometimes after plugin updates. Owners cannot easily tell whether the plugin or their settings are at fault. This creates an opportunity for an independent checker that compares live quotes with official USPS prices and alerts sellers before mismatches cost money.
AI-assisted: written with the help of AI from the reports.
Products affected
USPS Simple Shipping for Woocommerce.
Related problems
Who has this problem
3 businesses found.
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