Every time postage rates go up, people start asking the same question. Will the stamps sitting in their desk drawer still work. The short answer is yes. Forever Stamps keep their mailing value no matter how many times the price goes up. This guide explains why that happens, what changes in 2025, and how to make the most of your current stamp stock.
Why Forever Stamps Never Lose Their Value
Forever Stamps are built around one simple promise. Each stamp covers the cost of a single one ounce First-Class letter, no matter when you use it.
Here is what that means in practice:
- A stamp bought in 2017 still covers a First-Class letter in 2025
- You do not need to add extra postage after a price increase
- The stamp has no printed dollar amount or expiration date
- The postal service honors the current mailing rate at the time you use the stamp, not the price you paid
This system was designed to protect buyers from rate changes. It also removes the guesswork of matching old stamps to new rates.
What Changes With the 2025 Postage Price Increase
A price increase changes the cost of a new Forever Stamp. It does not change what an existing Forever Stamp can do.
A few things shift when rates go up:
- New stamps sold after the increase cost more at checkout
- Stamps you already own keep working at full value
- Letters that need extra postage, like heavier envelopes, may need an added stamp
- Postcard rates and additional ounce rates can increase separately from the letter rate
Buying stamps before a price increase locks in the lower price while the stamps still do their full job later.
How to Tell If Your Stamps Are Still Good to Use
Some stamps look old or discolored, which makes people worry they have expired. Age does not affect a Forever Stamp.
Check these signs instead:
- Look for the word Forever printed on the stamp
- Confirm the adhesive still sticks to an envelope
- Check that the stamp is not torn or missing a section
- Make sure the stamp has not been used or postmarked already
If the stamp still has clean adhesive and a full design, it is ready to mail.
How Many Forever Stamps Do You Need Per Letter
Most standard letters need only one Forever Stamp. Some mail pieces need more.
Use this quick guide:
- One ounce letter in a standard envelope needs one stamp
- Letters over one ounce need an additional ounce stamp for each extra ounce
- Square or oddly shaped envelopes may need extra postage due to machine sorting
- Large envelopes and flats need a different postage rate than letters
Weighing your mail before you send it prevents returned letters and postage due notices.
Common Mistakes People Make After a Price Increase
A price increase creates confusion for a lot of mailers. These mistakes come up often.
Watch out for these:
- Adding extra postage to a Forever Stamp that already covers the letter rate
- Assuming older stamps are worth less than new ones
- Throwing away stamps because they look faded or dated
- Buying stamps in small quantities right before a price hike instead of stocking up
- Mixing up postcard stamps with letter stamps
Avoiding these mistakes saves both money and trips to the post office.
Should You Stock Up Before the Next Price Increase
Buying Forever Stamps ahead of a rate change is one of the easiest ways to save on mailing costs. Since the stamps hold their value permanently, there is no downside to buying in bulk when the price is lower.
Stocking up makes sense if you:
- Mail letters or bills regularly
- Run a small business that ships invoices or paperwork
- Send greeting cards or holiday mail each year
- Want to avoid post office lines for small purchases
A coil of 100 stamps covers most households and small offices for months at a time.
Where to Buy Forever Stamps at a Lower Price
If you want to avoid paying the new 2025 rate, buying stamps issued in earlier years is a smart option. Older Forever Stamps carry the exact same mailing value as brand new ones, since the value is locked at time of use, not time of printing.
You can view current in-stock Forever Stamp coils here.
FAQ
Do Forever Stamps expire?
No. Forever Stamps never expire and never lose mailing value, regardless of how old they are or how many rate increases have happened since you bought them.
Can I still use stamps from a few years ago after the price increase?
Yes. A Forever Stamp from any past year covers a current First-Class one ounce letter at today's rate, with no extra postage required.
Do I need to add postage to old Forever Stamps?
No, as long as the letter is a standard one ounce piece. You only need extra postage if the letter weighs more than one ounce or has an unusual shape.
Why do Forever Stamp prices change if the stamp itself does not expire?
The price of a new stamp reflects the current mailing rate at the time of purchase. Once bought, that stamp locks in coverage for a one ounce letter permanently, no matter what future rates become.
Is it worth buying stamps in bulk before a price increase?
Yes. Buying a coil of 100 before a rate change locks in the lower price while giving you months of postage that works at full value, even after rates go up.