If you have letters or bills to mail, you might want to rush to get them in the box. Saturday is the last day when it will cost you 46 cents.

Starting Sunday, you’ll pay more – 49 cents, in fact.

The planned 3-cent hike is the largest increase in consumer postage prices in more than a decade for the U.S. Postal Service.

One way to avoid the hike – and save money in the process – is to buy Forever Stamps now and use them any time for first-class mail, the kind used by most consumers. Launched in 2007, Forever Stamps are always valid, no matter what people paid for them and even if prices go up.