No. A Forever stamp cannot be reused after it has already been used to pay postage. It is considered used even when no cancellation mark is visible. The word “Forever” describes its lasting one-ounce letter-rate value, not permission to use the same stamp more than once.
What Counts as a Used Stamp?
| Situation | Can it be used on new mail? | What to do |
|---|---|---|
| The stamp traveled through the mail and has a visible cancellation | No | Keep it only as a collectible or dispose of it |
| The stamp traveled through the mail but appears uncanceled | No | Do not remove and reuse it |
| An unused stamp is still on its original backing | Yes | Use it once on an eligible new mailpiece |
| A stamp was attached to an envelope that has not been mailed | Do not assume it can be transferred | Use the prepared envelope if suitable, or ask a Post Office before attempting removal |
See how Forever stamps are postmarked and canceled, including why the ink can be faint or partial.
Why an Uncanceled Stamp Still Cannot Be Reused
Cancellation is evidence that postage was used, but the absence of a visible mark is not permission to use it again. USPS rules prohibit reusing a stamp that has already paid postage. Mail processing can leave a light, incomplete or hard-to-see mark, and postal systems can use other evidence of prior use.
If You Put a Stamp on the Wrong Envelope
- Do not mail the incorrect envelope.
- Do not damage the stamp by peeling, soaking or adding adhesive.
- If practical, correct or reuse the unmailed envelope itself.
- If that is not possible, take the unmailed item to a Post Office and ask for case-specific guidance. Do not assume a removed self-adhesive stamp will remain acceptable.
Compliant Alternatives
- Use a new, genuine, unused stamp on the replacement mailpiece.
- Keep older unused Forever stamps for future letters; their ordinary Forever value does not expire.
- For a large unused surplus, compare continued use, gifting, return eligibility or lawful resale instead of attempting reuse.
Related Help
See how to place Forever stamps on an envelope, learn how to preserve a stamp from an envelope for collecting, or review the unused-stamp resale guide.
Frequently Asked Questions
Can I reuse a Forever stamp if it was not postmarked?
No. If it already traveled through the mail and paid postage, it is used even when no cancellation is visible.
Does a Forever stamp expire after one use?
It is not an expiration issue. A stamp is a single-use payment of postage. “Forever” means an unused ordinary stamp continues to match the current one-ounce letter rate.
Can I remove a stamp from an unmailed envelope?
Do not assume a peeled or soaked self-adhesive stamp will remain acceptable. Use the envelope if possible or ask a Post Office about the intact unmailed item.
Can a canceled stamp be kept?
Yes, it can be kept as a collectible, but it cannot be used again as postage.
Source: USPS Domestic Mail Manual 604. Rule checked September 1, 2026.
For the core value, validity, weight, and usage rules, see How Do Forever Stamps Work?.