Casino comps look like generosity, but they are a calculated business system built around your theoretical loss, not your actual wins or losses on any given trip.

When a casino rates your play, it tracks your average bet, the game you play, and how long you play, then estimates how much it expects to win from you over time.

That estimate, called theoretical loss or theo, decides your comp value: most casinos return roughly 20 to 40 percent of theo in rooms, meals, free play, and other perks.

Understanding this system helps you make smarter choices, such as concentrating your play, always using your loyalty card, and asking a host to review your folio before checkout.