Customers must affix additional postage when mailing letters weighing in excess of 1 ounce and/or letters subject to the nonmachinable surcharge or mailpieces subject to another rate of postage (e.g., large envelopes or packages).
Ensure Correct Amount of Postage for Greeting Cards
Add a stamp for each ounce the card weighs. Be sure to round up. For example, a card that weighs 1.5 oz would get two stamps. Additional charges may apply if the card is non-machinable, rigid, or oversized.
Forever Stamps are perfect for one-ounce letters mailed within the U.S. Heavier letters require additional postage. Avoid using two Forever Stamps; it's more cost-effective to purchase higher denomination stamps or add extra ounces at the discounted rate of $0.27* per ounce.
How many stamps will I need to put on my envelope to send it through the mail?
Can I put two stamps on a large letter?
Yes, you can use multiple stamps to make up the correct postage value. Just ensure the total value covers the service you need - for example, combining two Second Class stamps to cover the cost of a First Class Large Letter.
How many pieces of paper before I need two stamps?
TIP: As a rule of thumb, you can send 1 oz (4 sheets of printer paper and a business-sized envelope) for 1 First-Class Mail® Forever® stamp (currently $0.73). The postage for a large envelope (or flat) starts at $1.50 for 1 oz.
Yes! There is no expiration date for USPS Forever stamps. As long as a stamp is genuine and has not been previously used, it is perfectly acceptable to use.
If you put more than the required postage on a letter, you have simply contributed to reducing the Postal Service's deficit by an oh-so-infinitesimal amount. You can't get change from an over-franked letter, so you have overpaid, that's all.
Do bubble mailers need stamps? If your bubble mailer box is an envelope with a weight of less than 1 ounce, you need to use a forever stamp of $0.55. Depending on the different factors, the bubble box containing 4 ounces can cost up to $3.74. You need around 7 forever stamps on your bubble mailer.
When you send a letter from the U.S. to another country, the address may be a little different, but it's still easy and affordable: it only costs $1.70 to send a 1 oz letter (or postcard) using a USPS® Global Forever® stamp.
A stamp once affixed to one document cannot lawfully be removed and affixed to another. Any person willfully reusing such a stamp shall be subject to the penalty prescribed by 26 U.S.C. 7208.
You'll need either one two-ounce stamp or two Forever stamps for typical wedding invitations. Most wedding invitation suites weigh just over one ounce, making a single Forever stamp insufficient.
Regular stamps without a barcode* are no longer valid for postage. This follows the introduction of a 6 month grace period from the initial 31 January 2023 deadline. Swap them for the new barcoded ones.
As mentioned above, postal stamps do not expire and can be used indefinitely. In the event of a price increase, customers can purchase Denomination Stamps to make up the price for postage or use Forever Stamps. Can I purchase 1-cent or 3-cent stamps to makeup the increase in postage?
If your letter is a standard-sized envelope and weighs 3.5 ounces or less, you will need one stamp. Large envelopes. This includes 9x12, legal, and manila envelopes. Two stamps are needed for the first ounce, and postage will be an additional $0.27 cents after.
What's the difference between a sheet and a book of stamps?
Stamps are sold in a variety of different configurations. Panes are “sheets” of stamps cut from the original press sheet, coils are strips of stamps (one stamp wide) sold in rolls, and booklets are the most easily portable option, commonly employed for mail-use stamps.
If you're sending a letter that exceeds one ounce in weight, you can use additional Forever Stamps to cover the extra postage required. Each Forever Stamp corresponds to the current first-class postage rate, so using two Forever Stamps would provide postage equivalent to double the current rate.
What happens if I send a large letter with a normal stamp?
The maximum dimensions of an envelope you can send with a standard first class stamp is 240mm x 165mm. Larger than this and postage rate will increase to large letter or parcel rate.
The weight of your mail is one of the most crucial factors in determining postage. The United States Postal Service (USPS), for instance, allows one First-Class Mail stamp for every ounce (or 28 grams) of letters. If your letter exceeds this weight, you'll need to add additional postage.
