When Do Us Postage Stamps Go Up In Price 2024. The postal service filed notice of the price hikes with the postal regulatory commission on tuesday. The cost of a forever postage stamp has just gone up, under a u.s.

The price increased by 5 cents, from 68 cents to 73 cents. Mail stamps will rise on sunday to 73 cents from 68 cents, the latest in a series of price hikes.