How Much Postage for Wedding Invitations?
Most wedding invitations cost between $0.82 and $1.40 each to mail. The exact figure depends on three things: weight, envelope shape, and what is attached.
Your answer
Standard letter
No extra postageRegular letter postage. No surcharge.
- Postage per piece
- $1.11
- 150 invitations
- $166.50
Stamps for each one
1 × Two-Ounce (often sold as a wedding stamp)
Why
- This is a standard letter: within 6.125 x 11.5 in, no thicker than 0.25 in, and length divided by height is 1.38 (it must be between 1.3 and 2.5). USPS rule
Rates last verified on
150 invitations: $166.50 in postage ($1.11 each, standard letter)
The quick answer
The wedding invitation postage calculator gives the exact figure for your envelope. For a rectangular envelope that bends and has nothing lumpy on it:
- Up to 1 oz: $0.82 (one Forever stamp)
- Up to 2 oz: $1.11 (one Two-Ounce stamp)
- Up to 3 oz: $1.40 (one Three-Ounce stamp)
- Up to 3.5 oz: $1.69
Step 1: assemble one complete invitation
Postage is set by the finished piece, not the card. Build one exactly as it will be mailed: every insert, the reply envelope with its stamp on, the liner, the band, the outer envelope sealed. If you have not got all the parts yet, wait. Guessing here is how people end up 0.1 oz over.
Step 2: weigh it
Use a kitchen or postal scale that reads to a tenth of an ounce. Any fraction over an ounce is charged as the next full ounce, so 1.1 oz pays the 2 oz price. No scale? There are a few workarounds, and any post office will weigh one for free.
Step 3: check the shape
Divide the envelope's long side by its short side. If the answer is between 1.3 and 2.5, the shape is fine. Standard rectangles like the A7 pass. Every square envelope fails and adds $0.49.
Also measure thickness. Over 1/4 in, the invitation is a large envelope and starts at $1.69.
Step 4: check what is on it
Any one of these also adds the $0.49 nonmachinable surcharge: a wax seal, ribbon or twine, a clasp or button, a card that will not bend, a plastic sleeve, or an address written along the short side. It is charged once, not once per feature.
Add it up for your guest list
Count households, not guests, and add a few spares. For 150 invitations at 2 oz, postage is $166.50. The same 150 in square envelopes is $240.00.
Then add the reply envelopes. If you pre-stamp them, that is another $0.82 per invitation: $123.00 for 150. See RSVP envelope postage.
Before you buy 150 stamps
Take your one finished invitation to a post office counter and ask them to confirm the postage. It takes two minutes and it is the only check that fully counts, since the clerk decides whether a piece is too rigid or too lumpy. Then buy stamps for the batch.
Compare the options
| Option | Mail class | Each | For 100 |
|---|---|---|---|
| A7, single card, 1 oz | Standard letter | $0.82 | $82.00 |
| A7, full suite, 2 oz | Standard letter | $1.11 | $111.00 |
| A7, full suite with wax seal, 2 oz | Nonmachinable letter | $1.60 | $160.00 |
| 5.5 in square suite, 2 oz | Nonmachinable letter | $1.60 | $160.00 |
| Pocket fold in an A7.5, 3 oz | Standard letter | $1.40 | $140.00 |
Questions and answers
How much postage does a wedding invitation need?
$0.82 at 1 oz, $1.11 at 2 oz and $1.40 at 3 oz in a standard rectangular envelope. Add $0.49 if it is square, rigid or has a wax seal or ribbon.
How many stamps for a wedding invitation?
One stamp if you match it to the weight: a Forever stamp for 1 oz, a Two-Ounce stamp for 2 oz, a Three-Ounce stamp for 3 oz.
Is one Forever stamp enough for a wedding invitation?
Only if the finished invitation weighs 1 oz or less and the envelope is a plain, flexible rectangle. Many full suites weigh more.
How much does it cost to mail 100 wedding invitations?
$82.00 at 1 oz, $111.00 at 2 oz and $140.00 at 3 oz, before any surcharge or reply postage.
Should I take my invitations to the post office?
Take one finished invitation first to confirm the postage. Then stamp the batch and mail it.