Casino comp points are the currency of loyalty programs. Every time you play, you earn points based on how much you bet and how long you play, and those points can be turned into free rooms, meals, show tickets, free play, or cashback. For high rollers, comps can be worth a significant amount, but only if you understand how they are calculated.

The basic formula is simple: the casino estimates its expected win from your play, known as your theoretical loss, and returns a share of it as comps. The theoretical loss depends on your average bet, the number of hours you play, the speed of the game, and the house edge of that game. A slots player betting large amounts quickly generates a high theoretical loss, and therefore high comps. A blackjack player using good strategy generates a much lower one.

The comp rate, meaning the share of your theoretical loss returned to you, is usually between twenty and forty percent, depending on the casino and your tier. That sounds generous, but remember that the theoretical loss is the casino's expected profit from you. A comp worth forty percent of the expected loss still leaves the casino well ahead on average. Comps are a rebate, not a profit.

High rollers get better comp rates because their play is more valuable to the casino. A player at a higher loyalty tier earns points faster, gets a better conversion rate when turning points into cash or free play, and receives discretionary comps from a host, such as a suite upgrade or a private dinner. The difference between tiers can be large, which is why concentrating your play at one casino pays off.

To get the most from comps, always use your loyalty card, and make sure every session is recorded. Tell the pit boss when you sit down at a table game so your play is rated, because unrated play earns nothing. Ask your host what your comp balance is and what it can buy. Many players leave comps unused because they never ask.

Do not let comps change how you play. Chasing a free room by betting more than you planned is a bad deal, because the extra losses will cost far more than the room is worth. The right way to think about comps is as a small rebate on play you were going to make anyway. If a comp covers your dinner, enjoy it. If it requires you to double your bets, walk away.

Most loyalty programs let you convert comp points into free play, which is credit you can use on slots or table games. The conversion rate is better at higher tiers, which is one more reason to concentrate your play. Free play usually has its own rules: it may need to be used within a set time, it may only work on certain games, and winnings from it may have a cap. Check the terms before you convert a large balance, so you know exactly what you are getting.

Comp tiers usually reset on a fixed schedule, often at the end of the calendar year or after a rolling period of months. If you earned a high tier last year, you may need to earn a set number of points again to keep it. Some casinos offer a grace period or a soft landing, where you drop one tier instead of falling to the bottom. Ask your host how the reset works at your casino, and plan your play around it. A tier you understand is a tier you can keep.

Check the expiry rules too. Comp points often expire after six to twelve months of inactivity, and some casinos reset them at the end of the year. If you play at a casino only once a year, use your points before they disappear. A little attention to the program can turn a loyalty card into real value. Play responsibly and only with money you can afford to lose.