stamps

U.S. postage stamps never expire: every stamp issued since 1860 is still valid postage. Here is how to top up old stamps to the 82-cent 2026 rate.

See whether regular Forever stamps work for Canada in 2026, how many you need, when a Global Forever stamp is simpler, and what weight limits change the price.

No — reusing a postage stamp breaks postal law, and the cancellation mark a sorting machine prints across the stamp makes a used one easy to spot.