A comp is a casino-provided perk: a meal, room, drink, free play, event invite, show ticket, limo, or similar benefit. In casino language, a comp is not really “free.” It is usually paid for from the value the casino expects to earn from the player’s action, rating, game choice, and time played.
Plain Talk
A comp is the casino giving something back to keep a player loyal. The player sees a free dinner. The casino sees a reinvestment decision.
That difference matters. A casino does not normally comp because somebody had a bad day, sounded friendly, or lost money in one unlucky hand. Comps usually come from tracked play. The more accurately the casino can estimate your value, the more controlled the comp decision becomes.
This glossary page defines the term. For the deeper operations view, read How Casinos Calculate Comps and Casino Operations.
| Term | Plain-English meaning | Where it appears | Why it matters |
|---|---|---|---|
| Comp | Casino perk tied to player value | Host desk, pit, slots, player club | It changes what the player receives back |
| Comp value | Estimated dollar worth of the perk | Marketing, host approval, player account | It affects profit and reinvestment |
| Theo | Expected casino win from play | Rating systems and reports | It often drives comp decisions |
| Actual loss | What the player really lost | Win/loss records | It may influence judgment, but it is not the same as theo |
Where You See It
You see comps at the player’s club booth, in casino mailers, on slot screens, in host conversations, at hotel check-in, in restaurant vouchers, and in table-game ratings. A floor supervisor might say, “Let me check your rating,” before approving a meal comp. A host might say, “I can take care of the room,” after reviewing trip value.
Comps also appear in casino databases. The player sees a benefit. Marketing sees reinvestment. Finance sees cost. Management sees whether the property is buying loyalty at the right price. Responsible gaming teams also care because promotional offers should not push risky play; the American Gaming Association Responsible Gaming Code discusses responsible conduct in gaming operations and marketing.
Why It Matters
Players often treat comps like winnings. That is dangerous. A comp can reduce the cost of entertainment, but it does not remove the house edge.
The casino’s basic question is not, “Did this player deserve something?” The question is closer to: “How much can we reinvest and still keep the relationship profitable?” For tax and recordkeeping context in the United States, players should also understand that gambling records matter; the IRS gambling income and losses guidance explains why players should keep records of gambling wins and losses.
Example
A roulette player bets $50 per spin for 90 minutes. The pit records the average bet, time played, game type, and sometimes pace. The casino estimates a theoretical loss from the game’s edge and the number of decisions. A coffee-shop meal might be approved. A weekend suite probably will not be approved from that one short session.
The player says, “But I lost $800.” The casino may answer, “Your rating supports dinner.” That sounds cold, but it is how comp math usually works.
From the Casino Side:
From the casino side, a comp is controlled reinvestment. It is a marketing cost tied to expected player value, loyalty, competition, seasonality, hotel occupancy, host judgment, and property policy.
Operators watch whether comps are too tight, too loose, or badly targeted. A property can lose money by overcomping low-value play. It can also lose good customers by undercomping profitable players. Casino reports often separate actual win, theoretical win, reinvestment, and comp liability. Public gaming reports, such as the UNLV Center for Gaming Research Nevada Gaming Win report, show how casinos think in win, hold, handle, and unit performance terms, even though individual comp systems are property-specific.
Common Misunderstanding
The common mistake is thinking a comp is a refund for losing. It is not. Losing money may get attention, especially for a rated player, but most modern comp decisions are built around expected value, not sympathy.
A second mistake is chasing comps. Betting more to “earn” a free meal often means paying far more in expected loss than the meal is worth.
Hard Truth
A comp feels like the casino giving you something. Most of the time, it is the casino returning a controlled slice of money it expected to earn from your play.
Related Terms
- Comps explains the plural term players use on the floor.
- Comp System explains the software and rules behind comp decisions.
- Player Rating explains how table play is estimated.
- Average Daily Theoretical explains a common player-value metric.
- Reinvestment Rate explains how much casino value is returned to players.
- Free Play explains one of the most common comp forms.
FAQ
Is a casino comp really free?
Not in the business sense. The player may not pay at the restaurant or hotel desk, but the casino normally funds the comp from expected gambling value.
Do I get comps because I lost money?
Sometimes actual loss influences a decision, especially for a known player, but the main calculation is usually based on tracked play and theoretical loss.
Can comps beat the house edge?
Usually no. Comps can reduce the cost of play, but most players still face negative expectation once gambling math is included.
Are slot comps and table-game comps calculated the same way?
The idea is similar, but slot play is usually tracked more precisely through carded coin-in. Table play depends more on rating accuracy.
Should I gamble more to earn comps?
No. That is usually backwards. A comp is valuable only if it comes from play you were already willing to make.
Deeper Insight
A comp is easiest to understand as a reinvestment decision. The casino estimates what your play is worth, then decides how much of that expected value it is willing to return as perks.
Formula / Calculation
| Metric | Formula | Plain-English meaning |
|---|---|---|
| Theoretical Loss | Average Bet × Decisions Per Hour × Hours Played × House Edge | What the casino expects to earn from the session over time |
| Comp Value | Theoretical Loss × Reinvestment Rate | The rough comp budget tied to that play |
| Expected Loss | Total Amount Wagered × House Edge | The long-run cost of the action |
Formula Explanation in Plain English
If your expected loss is $100 and the casino reinvests 20%, the comp budget might be around $20. That does not mean every casino will give exactly $20, and it does not mean the casino owes you anything. It means the business logic starts with expected value, not the emotional result of one session.
Related Reading
Start with the Glossary if you want the full vocabulary map. For the math behind comp decisions, read Theoretical Loss, Theo, and Comp Value. For a practical player question, see How Do Casinos Calculate Comps?. For the operational side, go to Back of House and Casino Operations.