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Quick Answer: Do Stamps Expire?
USPS introduced Forever Stamps in 2007 specifically so customers would never need to buy denomination-based stamps or add extra postage when rates increased. Once purchased, a Forever Stamp covers the current First-Class Mail letter rate — permanently. This applies regardless of the stamp’s design, whether it features a flag, holiday theme, or commemorative artwork.
Non-Forever stamps with a printed denomination (such as “$0.49” or “$0.55”) also do not expire, but they are worth only their face value. If the current rate is $0.82, you would need to add extra postage to cover the difference.
How Forever Stamp Prices Have Changed — And Why That Matters
Because Forever Stamps never expire, buying them before a price increase effectively locks in savings. Here is how stamp prices have climbed over the past several years:
USPS rates effective July 12, 2026 should be treated as current, not as a future buying deadline.
Since stamps purchased today will still be valid after the increase, stocking up at $0.82 is a straightforward way to plan ahead. To learn more about current pricing, see our guide on how much is a Forever Stamp in 2026.
If you are looking for savings below face value, our discount Forever Stamps guide covers what to expect from legitimate sellers.
Stamp Validity Rules: What Makes a Stamp Usable
While Forever Stamps do not expire, a few practical rules determine whether a particular stamp is valid for mailing:
Weight and shape also affect whether a single Forever Stamp is sufficient:
- Standard letter, 1 oz or less: One Forever Stamp ($0.82) covers it.
- Letter over 1 oz: Add $0.29 for each additional ounce.
- Non-machinable envelope (rigid, lumpy, or oddly shaped): Add a $0.49 surcharge.
- Square envelope (6″×6″): Costs $1.31 — not $0.82. This is a common mistake with wedding invitations.
- Postcards: $0.65 — less than a Forever Stamp, so you are overpaying slightly if you use one.
For most everyday letters — bills, cards, correspondence — a single Forever Stamp is all you need.
Common Misconceptions About Stamp Expiration
Knowing these rules helps you make the most of stamps you already have and plan future purchases. For more on purchasing options, see our guide on where to buy postage stamps.
Where to Buy Forever Stamps at a Fair Price
You can purchase valid Forever Stamps from several sources. Here is a comparison of common options:
| Source | Approx. Price (100 stamps) | Notes |
|---|---|---|
| USPS.com / Post Office | $82.00 | Full face value; widest design selection |
| Costco / Sam’s Club | $77.75 | Membership required; limited designs |
| Buy Discount Stamps.com | $66–$70 (est.) | 10–15% below face value (Newsweek-verified) |
When evaluating stamp sellers, the U. S. Postal Inspection Service notes that discounts exceeding 20–50% off face value may be a sign of counterfeit stamps. Legitimate discounts in the 10–15% range are realistic and available from established sellers.
Frequently Asked Questions
Do stamps expire?
No. U. S. postage stamps do not expire. Forever Stamps in particular maintain their value permanently — a Forever Stamp bought at any past price will always cover a standard 1-ounce First-Class letter. The current price is $0.82, rising to $0.82 on July 12, 2026, but stamps purchased before that date remain fully valid at no extra cost.
Do Forever Stamps expire?
No — Forever Stamps are designed to never expire. They always cover the First-Class Mail rate for a standard 1-ounce letter, regardless of when they were purchased. Whether you bought them at $0.55 in 2020 or at $0.82 today, they work the same way.
Do postage stamps with a dollar value expire?
No. Stamps with a printed denomination (such as $0.49 or $0.55) do not expire either, but they are worth only their printed face value. If the current First-Class rate exceeds the stamp’s value, you will need to add additional postage to cover the difference.
Where is the cheapest
place to buy stamps?
place to buy stamps?
The cheapest legitimate stamps can be found at discount retailers like Costco, Sam’s Club, and specialized online sellers such as Buy Discount Stamps.com, which typically offer 10–15% below face value. Avoid steep discounts (over 20–50% off) as these may indicate counterfeit stamps. You can also save by purchasing rolls of 100 before USPS price increases take effect.
Can I use old stamps that have a printed value?
Yes. Any valid, unused U. S. postage stamp with a printed denomination can still be used. However, if the printed value is less than the current First-Class rate, you will need to affix additional postage to make up the difference. For example, a $0.55 stamp alone will not cover the current $0.82 rate — you would need to add $0.23 in additional postage.
How can I tell if my stamps are still good?
Unused U. S. postage stamps purchased from the USPS or authorized retailers remain valid indefinitely. As long as the stamps have not been used, cancelled, or damaged beyond recognition, they are good to use. There is no printed expiration date on any U. S. postage stamp.
What happens to stamps after a price increase?
After a price increase, Forever Stamps purchased at any previous price will still cover a standard 1-ounce First-Class letter at the new rate. Denomination stamps (those with a specific dollar amount printed on them) retain only their printed face value, so you may need to add extra postage if rates have risen above that amount.
Key Takeaways
- U. S. postage stamps do not expire — they remain valid indefinitely.
- Forever Stamps always cover the current First-Class letter rate, no matter when purchased.
- Denomination stamps keep their printed face value; add postage if rates exceed that value.
- Discount buying through authorized sellers can save 10–15% off face value.
If you found this guide helpful, consider bookmarking it for future reference. Stamp prices change periodically, and we update this article to reflect the latest USPS rate adjustments and buying tips.
Related reading
Sources and update note
Use the linked primary record for the exact issue, rule or current condition. Prices, availability and platform features can change and should be checked at the time of use.