Postage Rates 2024 Per Ounce Chart. The charts below show the old rates (crossed out) and new rates (in yellow) for common types of usps mail. The price for each additional ounce has stayed the same at 24 cents of postage but the nonmachinable surcharge (e.g., invitations with wax seals or that are square shaped) will increase to 44 cents.

Expect a 5% average increase, with some rates going up to $3.10 more. For parcels (per day) 3.00.