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FIRST-CLASS MAIL LETTER 2017 POSTAGE RATES 2016 POSTAGE RATES INCREASE/DECREASE. First-Class Mail Letter (1 oz.) - Retail/Post Office Rate $0.49 $0.47 $0.02. Metered Mail (1 oz.) - Online Postage Providers and Postage Meters $0.46 $0.465 -$0.005. First-Class Mail Letter - each additional ounce $0.21 $0.21 NO CHANGE.
The U.S. Postal Service (USPS) will implement new postage rates for several mailing and shipping products on Sunday, January 21, 2018. Summary of the 2018 Postage Rate Increase: Domestic Mailing: First Class Mail Letters (1 oz.) rates will increase from $0.49 to $0.50 when purchased at the Post Office. Each additional ounce will cost $0.21.