Postage Rates 2024 Extra Ounce. New usps ® rates approved for july 14, 2024 the usps mailing services price changes will take effect july 14, 2024. These changes usually occur at the beginning and midpoint of each year.
How much will shipping prices increase?. The baseline postage rate to mail a flat/large envelope has increased from $1.35 to $1.39 in postage, but the price for each additional ounce also stayed the same.