The check arrives and there’s an 18% line already on it. It looks like a tip — it’s a percentage, it’s near the bottom, it’s about the size of a tip. So you read it as one and move on, maybe relieved you don’t have to do the math. But that line might not be a tip at all. It might be a service charge, and the two are not the same thing. A tip is money you choose to give, and by law it belongs to the worker. A service charge is money the restaurant sets, and by law it belongs to the restaurant. They can sit on the same receipt, in the same spot, at the same percentage — and go to completely different places.
This swap is happening quietly and fast. Across the receipts Square processes, the share of restaurant transactions carrying a service fee more than doubled in two years, to about 3.7% by 2024. Over the same stretch, the average tip fell to its lowest level in years. The number at the bottom of your check is being rebuilt from a thing you decide into a thing the restaurant decides — and most diners haven’t been told the difference. Here’s the difference, where the money goes, and what to do when you see one.
Sources: Square data via the Chicago Sun-Times (2024); Square data via Restaurant Dive (2025); Pew Research Center (2023); 29 CFR § 531.55.