This guide covers current wedding stamp pricing, how many stamps a typical wedding requires, popular USPS designs for wedding envelopes, and how purchasing before the next rate change saves money on your full mailing plan.
Current USPS letter rates
As of September 13, 2026, USPS Notice 123 lists $0.82 for an eligible stamped domestic letter up to 1 ounce, $1.11 for 2 ounces, $1.40 for 3 ounces and $1.69 for 3.5 ounces. The additional-ounce increment is $0.29, and a qualifying nonmachinable letter adds $0.49. The schedule took effect July 12, 2026.
These prices apply only after the finished piece is classified correctly. Postcards, flats, packages, international mail and added services use different rules.
Browse wedding stamps at the current $0.82 USPS rate →
How Much Do Wedding Stamps Cost Right Now?
A few pricing details that matter for wedding planning:
- Standard one-ounce letter: 1 Forever Stamp ($0.82)
- Letters over one ounce: Each additional ounce costs $0.29 — heavier invitation suites may need a Forever Stamp plus an additional ounce stamp
- Square or non-machinable envelopes: A surcharge of $0.49 applies on top of regular postage
Some online stamp sellers offer Forever Stamps at modest discounts below face value — typically 10–15% off. These savings often come from sellers who purchased inventory at earlier price points and can pass along the difference. For couples mailing large quantities, even a small per-stamp discount adds up meaningfully across an entire wedding mailing plan.
For a broader look at stamp pricing across quantities, see our guide on how much a Forever Stamp costs in 2026.
How Many Stamps Does Your Wedding Need?
Most couples underestimate wedding postage. A typical wedding involves four separate mailings, each requiring its own stamps. Use this planning table to calculate your total:
| Mailing | Pieces per Guest | 100-Guest Wedding | 150-Guest Wedding |
|---|---|---|---|
| Save-the-Dates | 1 | 100 | 150 |
| Invitation (outer envelope) | 1 | 100 | 150 |
| RSVP Return Envelope | 1 | 100 | 150 |
| Thank-You Cards | 1 | 100 | 150 |
| Total Stamps Needed | 400 | 600 | |
At $0.82 per stamp, a 100-guest wedding requires $328.00 in postage; a 150-guest wedding requires $468.00If your invitation suites weigh more than one ounce — common with layered card stocks, vellum wraps, or multiple enclosure cards — add one additional ounce stamp ($0.29) per heavier envelope.
Don’t forget RSVP return envelopes. Including a pre-stamped return envelope with each invitation removes a barrier for your guests and typically results in faster, more complete RSVP responses. Budget one Forever Stamp per return envelope when calculating total postage.
Here’s a quick cost summary for common wedding sizes:
| Guest Count | Total Stamps (4 Mailings) | Cost at $0.82 Each |
|---|---|---|
| 50 guests | 200 | $164.00 |
| 100 guests | 400 | $328.00 |
| 150 guests | 600 | $468.00 |
| 200 guests | 800 | $624.00 |
Popular USPS Stamp Designs for Weddings
USPS releases stamp designs throughout the year that pair naturally with wedding stationery. You do not need a wedding-specific stamp — any Forever Stamp works for postage — but choosing a design that complements your envelope style adds a thoughtful finishing touch. Common categories couples choose include:
- Floral and botanical designs: Roses, sunflowers, and garden-themed stamps are the most popular pairing for classic and garden-style weddings.
- Love and heart themes: USPS periodically issues Love-themed stamps around Valentine’s Day that work well year-round for weddings.
- Calligraphy and typography: Elegant script designs suit formal black-tie invitations.
- Nature and landscape stamps: Botanical gardens, butterflies, and scenic designs complement rustic, outdoor, or destination weddings.
- Flag and classic stamps: For couples who prefer a clean, understated look, the U. S. Flag Forever Stamp keeps the focus on the invitation design itself.
Design availability changes throughout the year. If you have a specific stamp in mind, ordering early ensures you get the quantity you need before a design sells out or is retired from production.
When to Buy: Timing Your Purchase Before the Rate Increase
Here is how buying before the rate increase affects your wedding postage budget:
Because Forever Stamps never expire, there is no downside to purchasing early. Even if your wedding is months away, stamps bought today will cover the postage at whatever the rate happens to be when you mail.
For more detail on upcoming pricing, see our 2026 Forever Stamp price increase guide.
Envelope Weight: When One Forever Stamp Is Not Enough
Not every wedding invitation fits the standard one-ounce letter rate. Before you order stamps, weigh a fully assembled invitation suite — including the inner envelope, outer envelope, response card, response envelope, and any enclosure cards or tissue inserts.
Common scenarios where you may need additional postage:
- Multi-piece suites with layered card stock: Thick cotton paper, mounted invitations, and multiple inserts often push the total weight past one ounce.
- Vellum wraps, belly bands, and wax seals: These decorative elements add measurable weight.
- Large-format or square envelopes: Square envelopes are considered non-machinable regardless of weight and carry a $0.49 surcharge.
A kitchen postal scale or a visit to your local post office can confirm the exact postage needed. If your suite weighs between one and two ounces, you will need one Forever Stamp plus one additional ounce stamp ($0.29). That combination currently totals $1.11 per envelope.
Should I use regular or extra-postage stamps for heavy invitations?
If your assembled invitation weighs more than one ounce, you need additional postage. The simplest approach is one Forever Stamp ($0.82) plus one Additional Ounce stamp ($0.29) on the outer envelope. If your envelope is also square or rigid, add the non-machinable surcharge ($0.49) on top. Your local post office can verify the total if you bring a sample.
Buying Tips and Next Steps
Wedding postage is one of those line items that surprises couples when they finally sit down to do the math. A few practical steps make the process smoother:
- Confirm your guest count early. Your stamp quantity depends on the number of households receiving each mailing — not just the total guest count. One invitation per household reduces the number of outer envelopes and RSVP return envelopes you need.
- Weigh a sample invitation. Assemble a complete suite and weigh it before ordering stamps so you know whether one Forever Stamp per envelope is sufficient.
- Buy all four mailings at once. Purchasing stamps for save-the-dates, invitations, RSVP returns, and thank-you cards in a single order ensures you get matching designs and consistent pricing.
- Choose unused, valid Forever Stamps. Make sure any stamps you purchase are unused and carry the correct USPS Forever denomination for reliable delivery.
Shop Forever Stamps for your wedding →
Do wedding stamps expire?
No. Forever Stamps do not have an expiration date. A Forever Stamp purchased at any point in time is always valid for the current First-Class Mail one-ounce letter rate. You can buy stamps months or even years before your wedding and use them without any issue.
Can I use any Forever Stamp on my wedding invitations?
Yes. Any Forever Stamp — regardless of its design — covers the current First-Class Mail rate for a standard one-ounce letter. You do not need a wedding-themed stamp for postage purposes. Choose whichever design you prefer; the postage value is the same.
Is it cheaper to buy Forever Stamps in bulk for a wedding?
Purchasing in larger quantities can reduce your per-stamp cost. A roll of 100 at face value costs $82.00, and some online sellers offer 10–15% below face value on bulk orders. For a 150-guest wedding requiring 600 stamps, a modest discount can save $25–$50 or more compared to buying individual books at the post office.
Sources and update note
Use the linked primary record for the exact issue, rule or current condition. Prices, availability and platform features can change and should be checked at the time of use.