MIAMI (CBSMiami) – The cost of mailing a letter, rent check, or sending invites are set for a slight hike as of Sunday.

The slight increase, which the U.S. Postal Service announced back in September, will go into effect on January 26, 2014.

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Highlights of the new single-piece First-Class Mail pricing include:

  • Letters (1 oz.) — 3-cent increase to 49 cents
  • Letters additional ounces — 1-cent increase to 21 cents
  • Letters to all international destinations (1 oz.) — $1.15
  • Postcards — 1-cent increase to 34 cents
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Pricing for standard mail, periodicals and package services will also be adjusted as part of a filing to the Postal Regulatory Commission this Thursday.

The proposed changes are expected to generate $2 billion in increased revenue.

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The Postal Service receives no tax dollars for operating expenses and relies on the sale of postage, products and services to fund its operations.