When Are Postage Rates Going Up In 2025 In Usa. The proposed increases for what the usps calls “market dominant classes”. Some postage rates will change on january 19, 2025 and some in july 2025 (but not announced yet).

Changes would go into effect at midnight ct on october 6 and remain in place until midnight ct on january 19, 2025. The new regulated rates are expected to generate.