Large Envelope Postage Rates 2025 Chart. For every additional 500 gms or fraction thereof. The price changes will take effect on january 21, 2025.
Learn about the 2025 postage price change for usps services and products, and how it affects domestic and international mail. Usps postage rates july 2025 increase chart erena jacenta, the baseline postage rate to mail a flat/large envelope has increased from $1.39 to $1.50 in postage.