Different postage rates apply to cards and postcards, letters, large envelopes (flats), and parcels. In general, the bigger your mailpiece, the more it will cost to mail.

In First-Class Mail, postcards cost less than letters. Letter size mail costs less than flat-size mail. Parcels pay the highest rate due to the cost of processing and delivery.

In Standard Mail, there is no card rate. You can mail card-sized pieces as Standard Mail, but you'll pay the same as a letter. Letters cost less than large envelopes (flats). Standard Mail parcels (including tubes) are charged a higher rate due to processing costs.

Can you get a better rate by re-shaping your mailpiece? Possibly. You could fold your large envelope to be letter-sized, or you could redesign your parcel to qualify for the lower flat rate.

How weight affects rates

How distance affects rates

How quantity affects rates

Destination entry discounts

Calculate postage for any class of mail or rate discount

Get a complete list of all domestic rates and fees.

• Ratefold - Notice 123 (PDF)

• Domestic Mail Manual - Rates and Fees (HTML)

• Business Rate Calculator – Compute rates for all discount mail

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