The changes hitting USPS this month, which took effect April 1, are part of a 10-year plan to save the agency $36 billion.

Why it matters: The increase, approved by the commission this week, ties the record for the highest stamp hike ever. Costs to send a letter by certified mail and money order fees are also increasing.

The request for the 5 cent first class stamp increase was made to the Postal ... seeking price adjustments for products including Certified Mail and money order fees. The price adjustments are ...