USPS Rate Changes and Updates: Every year, USPS updates, alters, and sometimes raises rates. This year is no different. USPS rate changes have been in effect since January 21st of this year and have increased 3.1% across all mail classes and shipping services. Shippers using UPS and Fedex as part of their shipping solution, should also be aware that UPS and Fedex have increased their rates this year by approximately 4.9% with surcharge and fee increases as well. The biggest changes have taken place for Priority and First Class packages.