Usps Postal Rates 2024. The postal regulatory commission (prc) has approved the next usps postage rate increases, which will take effect on sunday, july 14, 2024. Explore the usps postage rate shifts for postcards, flats, and letter sizes in 2024, and.

However, using stamps.com, you can still get a discounted rate of 69 cents. If approved, the new rates will take effect on sunday, july 14, 2024.