The cost of mailing a first-class letter, a postcard or a package within the United States will increase on January 27, as will the cost of flat-rate Priority Mail packages. First-class postage rises to 46 cents for the first ounce and postcards will now cost 33 cents each to mail. The ARRL Letter notes that this is the third hike for postcards in less than two years.
The US Postal Service will also be introducing a "Global Forever Stamp" to complement its current domestic version, which will remain valid for one ounce of international postage regardless of future rate increases. The initial cost of the Global Forever Stamp is $1.10.