Yes, you need a stamp for Certified Mail, or some other form of postage. The $5.30 Certified Mail fee is an extra service that rides on top of regular First-Class postage; it does not replace it. For a standard one-ounce letter in 2026, that means $0.78 in postage plus the $5.30 service fee, for a minimum total of $6.08 before any add-ons.
Why Two Charges Apply
Certified Mail is what USPS calls an “extra service.” It buys you a tracking number, a mailing receipt, and a delivery record. It does not buy you the trip through the mail system. That’s what the postage is for.
So every certified letter carries two charges:
- Base postage at the First-Class Mail rate, which depends on weight. A one-ounce stamped letter is $0.78 in 2026, and each additional ounce adds roughly $0.29 up to the 3.5-ounce letter limit. Metered mail runs a few cents cheaper; a one-ounce metered letter is $0.74.
- The Certified Mail fee, a flat $5.30 per item regardless of weight.
How you pay is up to you. Forever stamps work, as long as you put enough of them on the envelope to cover the full amount. A postage meter works. A prepaid label printed online works and rolls both charges into a single barcode. USPS doesn’t care which method you use, only that the correct total is on the piece.
What the Certified Mail Fee Doesn’t Cover
A few limits catch senders off guard.
Certified Mail includes no insurance. If the contents have monetary value, you have to buy insurance separately. Priority Mail comes with its own built-in coverage, but a standard First-Class certified letter is uninsured.
Only items sent at First-Class Mail rates qualify. That includes Priority Mail, which is technically a subset of First-Class. You cannot add Certified Mail to Media Mail, USPS Ground Advantage, or any other class.
Certified Mail is domestic only. APO, FPO, and DPO military addresses are fine. International destinations are not; for those you’d need a different service such as Registered Mail.
Putting the Postage on the Envelope
The certified label itself, PS Form 3800, is free at any post office. You fill it out with the recipient’s information, peel off the barcoded portion, and stick it on the front of the envelope, typically above the delivery address. Keep the upper-right corner clear.
That upper-right corner is where the postage goes. For a one-ounce certified letter, you need $6.08 there. At $0.78 per Forever stamp, that’s eight stamps, which is the practical reason most senders use a meter or an online label instead. A single printed label covering both the postage and the service fee is far tidier than a mosaic of stamps.
How Add-Ons Change the Total
The base $5.30 fee gets you tracking and a mailing receipt. If you want more, USPS offers several add-ons, each with its own charge stacked on top of postage and the Certified Mail fee:
- Physical Return Receipt (the green PS Form 3811 postcard signed by whoever accepted delivery): $4.40.
- Electronic Return Receipt (an email with the signature image and delivery details): $2.82.
- Restricted Delivery (only the addressee or an authorized agent may sign): $13.70.
- Adult Signature Restricted Delivery (addressee must be at least 21 and show government-issued photo ID).
A one-ounce certified letter with a physical Return Receipt comes to $10.48 ($0.78 + $5.30 + $4.40). Swap in the electronic Return Receipt and it’s $8.90. Add Restricted Delivery and the total climbs considerably, which is why that option tends to be reserved for legal matters where proving a specific person received the letter is the whole point.
Whatever combination you choose, the rule doesn’t change: postage is separate from the service fee, and both have to be on the envelope before it goes anywhere.