Most people don’t realize they overpaid until they’re home, the bags are unpacked, and the receipt is already crumpled in the car cupholder. But a quick scan at the store can catch the kind of small mistakes that quietly add up—wrong sale prices, missed digital coupons, or duplicate scans that turn one item into two. The best part is you don’t need to be “that person” holding up the line to do it. You just need a simple checklist you can run in under a minute while you’re still near customer service. Here are four things to check on every grocery receipt before you walk out.
