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Price for first-class stamp rises to 49 cents. It's going to cost you a few pennies more to mail a letter. The cost of a first-class postage stamp is now 49 cents â 3 cents more than before. 1  Regulators approved the price hike in December, and it went into effect Sunday. 2  Many people won't feel the increase right away: Forever stamps are good for first-class postage at whatever the future rate.
What is a Forever Stamp? Forever Stamps are a special type of stamp created by the United States Post Office that will always be worth one First Class stamp. When they were initially created in 2007 a Forever Stamp cost only $0.41. Their value has increased since then and they are now worth significantly more.