Receipt-scanning apps pay you in points or cash for photographing receipts from groceries, gas, pharmacies, restaurants, and more.

Fetch Rewards is the easiest start since any receipt earns points, while Ibotta pays more for shoppers who activate product offers before they shop.

Scan receipts the same day, since thermal paper fades fast and most apps reject receipts older than about two weeks.

The same receipt can legitimately go to multiple apps that reward different things, which is how you earn two or three times from one trip.

Expect a few dollars a week for a typical household, adding up to a few hundred dollars a year in gift cards if you scan consistently.