Do Forever Stamps Expire? (The Definitive Answer for 2026)

USPS rates effective July 12, 2026 are $0.82 for a stamped one-ounce letter, $1.11 for 2 ounces, $1.40 for 3 ounces and $1.69 for 3.5 ounces. The additional-ounce amount is $0.29 and the letter nonmachinable surcharge is $0.49.

The Short Answer: No, Forever Stamps Do Not Expire

The word “forever” in the name is literal. Once you buy a genuine Forever Stamp, it covers the current First-Class letter rate at the time of mailing — not at the time of purchase. You never need to add extra postage for a standard 1-ounce letter, even if rates have increased since you bought the stamp.

This is why Forever Stamps have become one of the most practical postage-planning tools available to U. S. households, small businesses, wedding planners, and anyone who sends mail on a regular basis.

How the Forever Mechanism Actually Works

The U. S. Postal Service introduced the Forever Stamp in 2007 specifically so that consumers would not need to buy one- or two-cent denomination stamps every time rates increased. Here is the basic rule:

That means the stamp does not carry a printed monetary value. When you affix a Forever Stamp to a standard 1-ounce letter, the Postal Service accepts it as full payment for that letter — today, next year, or ten years from now.

What Forever Stamps Cover

• A standard First-Class letter weighing 1 ounce or less
• Standard rectangular letter dimensions (no surcharge for shape)
• Domestic mail within the United States

If your letter exceeds 1 ounce, you will need additional postage regardless of how many Forever Stamps you own. Each additional ounce currently costs $0.29. Non-machinable surcharges and non-standard shapes may also require extra postage.

Full Forever Stamp Price History: 2007–2026

Looking at the full price history shows just how much value a stamp purchased years ago can hold today. The table below tracks the official First-Class Forever Stamp price since its introduction:

Notice that between July 2023 and July 2026 alone, the stamp price will have increased by $0.16 — a jump of more than 24 percent in three years. Each increase makes existing Forever Stamps in your drawer worth more in practical terms.

The Real Savings: What Buying Ahead Looks Like

Because the price keeps rising, buying stamps at today’s rate and holding them for future use can produce meaningful savings — especially for households and small businesses that mail regularly. Here is a simple example:

For someone who mails holiday cards, invoices, thank-you notes, or business correspondence throughout the year, buying a roll of 100 stamps at today’s price locks in $4.00 in savings over the next rate — and the stamps never expire, so there is no risk of them becoming unusable.

Common Scenarios Where the “No Expiry” Rule Matters

The permanent validity of Forever Stamps is especially helpful in a few everyday situations:

Wedding Invitations and Save-the-Dates

Wedding planning often starts months before invitations go out. Buying your Forever Stamps early — even a year in advance — means you lock in the current price and never worry about adding extra postage when rates change between purchase and mailing day.

Holiday Cards

If you send 50, 100, or more holiday cards each December, buying stamps in January or during a summer sale lets you stock up at a lower price. The stamps will be just as valid eight or ten months later.

Small Business Mailing

Invoices, statements, and direct mail pieces add up quickly. A small business sending 100 First-Class letters per month spends $82 per month at today’s rate — or $82 per month once the July 2026 increase takes effect. Stocking up ahead of the increase saves $48 per year with just one roll purchased in advance.

Occasional Mailers

Even if you only mail a few letters per year — tax documents, sympathy cards, forms — buying a book of 20 stamps now means you are covered for years. The stamps will not degrade, expire, or lose value as long as they remain unused and in good condition.

What About Stamps That Are Not Forever Stamps?

Denomination stamps — those printed with a specific value — do not automatically adjust to the current rate. If you have a $0.55 denomination stamp and the current letter rate is $0.82, you would need to add $0.23 in additional postage to mail a standard letter. Forever Stamps eliminate this problem entirely.

How Long Can You Keep Forever Stamps?

There is no time limit. The USPS has not announced any expiration policy for Forever Stamps since the program began in 2007. People have successfully used stamps purchased nearly two decades ago without any issue.

The only practical condition is that the stamps must be unused — meaning they have not been affixed to mail, postmarked, or otherwise cancelled. Damaged or heavily worn stamps may be refused at the counter, but stamps stored in a drawer, stamp album, or desk drawer remain valid indefinitely.

FAQ: Forever Stamp Expiration Questions

Buying Tips and Next Steps

Use this section as a practical checkpoint before you buy:

1. Match the stamp type to your mail. Forever Stamps cover standard 1-ounce letters. If you mail heavier items, plan for additional postage.
2. Choose a quantity that fits your real mailing needs. A book of 20 stamps ($16.40 at today’s rate) works for occasional mailers. A roll of 100 ($82.00 face value) is better for households or small businesses that mail regularly.