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USPS Flat Rate Prices

USPS Flat Rate is one of the best value postage shipping solutions. The service simplifies calculating the costs of mailing your clients and customers, and saves you time and money by reducing the administrative burden of sending your business mail.

If you’re not familiar with costs for USPS Flat Rate postage and packaging, read on.

USPS Flat Rate Envelope Shipping Prices

Packaging
Shipping PriceDimensions
Ideal for...
Flat Rate Envelope
$6.95
(commercial base)

$7.35
(Post Office)
12 1/2" x 9 1/2"
Letters
Essays
Manuscripts
Gift Card Flat Rate Envelope
$6.95
(commercial base)

$7.35
(Post Office)
10" x 7"
Large Greeting Cards
Gift Cards
Window Flat Rate Envelope
$6.95
(commercial base)

$7.35
(Post Office)
10" x 6"

or

12 1/2" x 9 1/2"
Pre-addressed Envelopes
Small Flat Rate Envelope
$6.95
(commercial base)

$7.35
(Post Office)
10" x 6"
Folded Documents
Christmas cards
Passports
Padded Flat Rate Envelope
$7.55
(commercial base)

$8.00
(Post Office)
12 1/2" x 9 1/2"
Clothing
Books
Video Games
DVDs and Blu Rays
Jewelry
Legal Flat Rate Envelope
$7.25
(commercial base)

$7.65
(Post Office)
15" x 9 1/2"
Resumes
Certificates
Transcripts

USPS Flat Rate Box Shipping Prices

Packaging
Shipping PriceDimensions
Ideal for...
Small Flat Rate Box
$7.50
(commercial base)

$7.90
(Post Office)
Outside:
8 11/16" x 5 7/16" x 1 3/4"

Inside:
8 5/8" x 5 3/8" x 1 5/8"
Brochures
Small Electronics
Medium Flat Rate Box 1 (top-loading)
$12.80
(commercial base)

$14.35
(Post Office)
Outside:
11 1/4" x 8 3/4" x 6"

Inside:
11" x 8 1/2" x 5 1/2"
Office Supplies
Shoes
Medium Flat Rate Box 2 (side-loading)
$12.80
(commercial base)

$13.65
(Post Office)
Outside:
14" x 12" x 3 1/2"

Inside:
13 5/8" x 11 7/8" x 3 3/8"
Office Supplies
Shoes
Large Flat Rate Box
$17.60
(commercial base)

$19.95
(Post Office)
Outside:
12 1/4" x 12 1/4" x 6"

Inside:
12" x 12" x 5 1/2"
Laptops
Gifts
APO/FPO/DPO Flat Rate Box
$16.10
(commercial base)

$18.45
(Post Office)
Outside:
12 1/4" x 12 1/4" x 6"

Inside:
12" x 12" x 5 1/2"
Sending Gifts to the troops
Large Flat Rate Board Game Box
$17.60
(commercial base)

$19.95
(Post Office)
Outside:
24 1/16" x 11 7/8" x 3 1/8"

Inside:
23 11/16" x 11 3/4" x 3"
Board Games

Tips and Tricks

Weight Limits

There’s a weight limit of 70lb for all packages shipped via USPS Flat Rate. To put that in perspective, here are some things that weigh about 70 lb:

  • Ten laptops
  • Nine gallons of water
  • One office swivel chair

Free packaging

The costs above apply to shipping with USPS. However, the actual Flat Rate boxes and envelopes are free. This means, if you so choose, you can order free packaging from USPS, then use it to ship your mail with a completely different delivery service. Bear in mind that boxes and envelopes arrive within seven to ten days of being ordered, so you might want to stock up on a few.

Next Steps

If your mail matches the required dimensions for USPS’s Flat Rate Priority Mail service, great. But if you want complete control over how your mail looks, you may prefer to ship using your own packaging, rather than the USPS-branded boxes and envelopes.

If that’s the case, leasing a postage meter is the way to go.

Postage meters help you to weigh and calculate postage costs for all your packages without having to buy stamps from the Post Office. Leasing one from registered suppliers like FP can help you save a great deal of time and money each month.

Expert Market can help you compare postage meter quotes. Simply fill out a short webform and we’ll put you in touch with top postage meter suppliers.