How Much Does It Cost to Send a Certified Letter? (Price Guide)

Certified Mail is a USPS extra service that gives the sender proof of mailing and a record of delivery. People use it for letters that may end up in a dispute: late-payment notices, demand letters, lease terminations, tax correspondence, and anything else where "I never got it" is a likely response. The service attaches to an ordinary First-Class Mail letter, so the price has two parts, the Certified Mail fee and the postage for the letter itself.

Most of the confusion about the cost comes from that split. The post office counter quotes one total, but the price list prints the fee and the postage separately, and the add-ons are priced on their own lines. The sections below take them one at a time so you can see where a total comes from.

Start with the fee in the answer box, then add postage for the weight of your letter. A standard envelope with a few sheets inside usually weighs under an ounce, which keeps you in the lowest postage tier. Heavier envelopes move up one tier for each additional ounce.

A large envelope (a "flat") costs more than a standard letter even at one ounce, because of its size. If you can fold your documents into a standard business envelope, you pay the lower letter rate. Check that the envelope is not rigid or lumpy, since odd shapes can be priced as parcels instead.

Certified Mail on its own gives you a postmarked receipt at the time of mailing and an online tracking record. It does not give you the recipient's signature unless you buy a return receipt. USPS offers the receipt in two forms: a paper card that is mailed back to you, and an electronic copy.

The electronic return receipt costs less than the paper one, and it arrives faster because nothing has to travel back through the mail. The paper version suits cases where you want a physical signature card for a file, for example in a court proceeding where the original may be asked for. If you are unsure, ask the clerk which form your recipient's address supports.

Restricted Delivery and Adult Signature Required are the expensive options. Restricted Delivery means only the named person, or someone that person has authorized in writing, can sign for the letter. Adult Signature Required means the person who signs must be an adult, and the carrier may check ID. Both cost far more than the base fee, so they make sense only when who receives the letter matters legally.

Certified Mail is not the only way to document a mailing. Two nearby services cover different needs.

A Certificate of Mailing is the cheapest proof. It shows that you handed the item to USPS on a given date, but it does not track the item or record delivery. That can be enough when the law only requires you to show you sent something, such as some notice deadlines. Registered Mail is a much more secure service, with the item kept in a controlled chain of custody, and it is priced accordingly. For an ordinary letter, Certified Mail usually sits in the middle: proof of mailing plus a delivery record at a moderate price.

Which one satisfies a legal requirement depends on the rule behind it. A lease, a court order, an agency notice, or a contract clause may name the exact method, so read that language first. If the stakes are high, a licensed attorney in your state can tell you which proof will hold up.

A few choices shift the cost from one letter to the next:

• Letter weight: Postage rises with each additional ounce, so trim unneeded pages or use lighter paper.
• Envelope size: Flats cost more than standard letters.
• Receipt type: Electronic receipts cost less than paper ones.
• Restrictions: Restricted Delivery and Adult Signature Required add the largest single amounts.
• How you pay: The fee is the same whether you mail one or several, so sending separate letters means paying it each time.

USPS revises its prices periodically, and extra service fees often change at the same time as postage. The figures here come from the USPS price list. Confirm the current fee at the counter or on the USPS site before a time-sensitive mailing.

Take the sealed, addressed envelope to a Post Office and ask for Certified Mail. The clerk applies the label, attaches any return receipt you want, and stamps your receipt. Keep that receipt and the tracking number. Do not drop the envelope in a collection box, because Certified Mail needs a postmarked receipt handed back to you at the counter.

After mailing, check tracking online. If the recipient is not home, USPS leaves a notice and holds the letter for pickup for a period. A letter that is never claimed comes back to you marked unclaimed, which can still be useful evidence that you tried to deliver it.