USPS Flat Rate Boxes & Pricing
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What are USPS Flat Rate Boxes?
USPS Flat Rate Boxes are just that - boxes with flat postage rates, no matter how heavy the package is. If you're shipping heavy, small items, Flat Rate Boxes are the best bang-for-your-buck option. Keeping a supply of these around your fulfillment operations can cut your shipping costs by 50%.
All of these packages are supported through the EasyPost API by using our predefined packages. So it's easy to set up internally and start collecting savings from your Flat Rate Boxes as soon as you integrate with EasyPost.
How Much Do USPS Flat Rate Boxes Cost?
We've broken the pricing into the table below. Note: The rates below reflect USPS Commercial Plus Pricing, which is available when shipping via EasyPost. If you're interested in signing up for USPS Commercial Plus Pricing, contact us and we can set you up.
The following rates are based on pricing from January 21, 2018.
| Type | Size | EasyPost Predefined Package | Price |
|---|---|---|---|
| Letter Envelope | 12 1/2" x 9 1/2" | FlatRateEnvelope | $6.35 |
| Gift Card Envelopes | 10" x 7" | FlatRateGiftCardEnvelope | $6.35 |
| Window Envelopes | 10" x 5" | FlatRateWindowEnvelope | $6.35 |
| Small Envelopes | 10" x 6" | SmallFlatRateEnvelope | $6.35 |
| Padded Envelopes | 12 1/2" x 9 1/2" | FlatRatePaddedEnvelope | $6.90 |
| Legal Envelopes | 15" x 9 1/2" | FlatRateLegalEnvelope | $6.65 |
| Small Box | 8 11/16" x 5 7/16" x 1 3/4" | SmallFlatRateBox | $6.85 |
| Medium Boxes | 11 1/4" x 8 3/4" x 6" or 14" x 12" x 3 1/2" | MediumFlatRateBox | $12.45 |
| Large Box | 12 1/4" x 12 1/4" x 6" | LargeFlatRateBox | $17.10 |
Save Money on Shipping Today
EasyPost's Multi-Carrier Shipping API Includes:
- USPS Commercial Plus Pricing on ALL accounts
- Instant Access to USPS, UPS, FedEx, and DHL & 95 Other Carriers
- Tracking, Rating, Address Verification, and Insurance Features
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