Be prepared to pay an extra penny at the post office starting tomorrow.

The price of a stamp will rise to 42 cents.

The increase is part of what could be an annual hike by the Postal Service.

A new law allows the Postal Service to raise the cost of a stamp much easier than in the past.

Just as long as the hike doesn't exceed the rate of inflation.

A price adjustment could come every May.

You can buy forever stamps from the post office, which are good forever.

Although they too, follow the price adjustment.