Start with the screen that shows the offer, not the ad that sells it
When a slot app or casino site advertises a free bonus, the advertisement shows you the headline number. The actual value is determined by a different set of numbers that sit behind the offer. Those numbers are printed in the promotion's terms, and they decide whether any of the bonus can ever become money you can withdraw. Before you accept anything, find the terms page. It is usually linked from the offer banner or the cashier screen, and it is the only document that states the rules that apply to you.
A free bonus is not a gift of cash. It is promotional credit with conditions attached. Those conditions fall into a few standard categories, and each one changes what the offer is worth. The most important of them is the wagering requirement, sometimes called playthrough. It states how much you must bet, in total, before bonus-related funds can be withdrawn. The requirement is written as a multiplier. If a bonus of 50 units carries a 30x requirement, the arithmetic works out to 1,500 units of wagering before withdrawal; that is an example, and your own offer will state its own multiplier. The key point is that the requirement applies to the bonus amount, not to your deposit, unless the terms say otherwise.
Game weighting is the second number that changes everything. A wagering requirement is not satisfied equally by every game. Slots often count fully, but table games may count at a reduced rate or not at all. If a game counts at a fraction of your wager, you must bet more in total to clear the same requirement. The terms page lists which games count and at what rate. Read that list before you play, because playing the wrong game can mean your wagering progress barely moves.
What the bonus structure looks like side by side
Bonus offers differ in more than their headline amount. The table below separates the main formats and the structural features that determine whether an offer is useful to you.
| Offer format | What you receive | What typically attaches to it | What to check in the terms |
|---|---|---|---|
| No-deposit bonus | Credit granted without a deposit | Wagering requirement, maximum-cashout cap, game restrictions, expiry window | Whether any of it can become withdrawable at all |
| Free spins | Spins at a fixed stake on specified slot titles | Winnings credited as bonus funds, not cash | Which slots qualify, and the wagering attached to winnings |
| Deposit match | Bonus funds added when you deposit | Playthrough on deposit plus bonus, or on bonus only | Whether the deposit itself is locked by the requirement |
| Loyalty reward | Credit or comps earned from tracked play | Tier thresholds, expiry, redemption limits | How much play generates how much value |
Maximum-cashout caps are the third structural piece. Even if you clear the wagering requirement, many offers cap how much of the remaining balance you can withdraw. The cap is stated in the terms. A bonus that clears but can only ever release a small fixed amount is worth less than its headline suggests. Expiry windows work the same way. If the bonus expires before you can reasonably complete the wagering, the offer is effectively worthless to you. The terms state the expiry, and it is often shorter than the wagering requirement would suggest is comfortable.
Loyalty value is calculated from your play, not from a menu of gifts
Free bonuses are one promotional channel. Loyalty programmes and comps are another, and they are built on a different idea. A casino tracks your play when you use a player card or a logged-in account. The system records your average bet, the number of decisions or spins you make per hour, and the house edge on the game you are playing. From those three inputs, the venue estimates a figure called theoretical loss, sometimes called theo. It is not what you lost. It is what the maths says your play is worth to the house over the long run.
The arithmetic is simple, and it is worth doing yourself. Suppose you play a game with a house edge of a few percent, at an average bet of 10 units, and you make 100 decisions per hour. Your theoretical loss for that hour is the product of those three numbers: average bet times decisions per hour times house edge. The result is a small number of units per hour. That is an example with made-up inputs; the point is the structure, not the exact figure. The venue then returns some fraction of that theoretical loss to you as a comp: a meal, a room, free play, or points. The fraction is set by the venue and is not published as a simple percentage. It is generally a small share of the theoretical loss, not a rebate of your actual losses.
This is why two players can sit at the same table and earn very different comps. One bets more, plays faster, or plays a game with a higher house edge. The loyalty system values their play more, because the system's estimate of their theoretical loss is higher. It is also why a player who loses heavily in one session may earn less than a player who broke even but played for many hours. Comps track expected value, not actual outcomes.
How to read an offer before you accept it
When you are deciding whether a free bonus is worth taking, work through the terms in a fixed order. First, find the wagering requirement and multiply it by the bonus amount. That is the total wagering you must complete. Second, check which games count and at what weighting. If the games you want to play count at a reduced rate, the effective requirement is higher. Third, find the maximum-cashout cap. Fourth, find the expiry window. Fifth, check whether the bonus funds are played before or after your cash balance, because that changes what a losing streak does to your real money.
None of this changes the underlying mathematics of the games. A slot with a given return-to-player percentage keeps the same RTP whether you are playing with cash or with bonus funds. Volatility does not change RTP either. What the bonus changes is the structure around your play: how much you must wager, how long you have to do it, and how much of the result you can keep. A bonus can extend your session or give you more spins, but it cannot turn a negative-expectation game into a positive one.
What varies under your control
You control which offers you accept, which games you play while clearing them, and how long you play. You do not control the house edge on the games, and no betting pattern changes it. A progression system, such as doubling your bet after a loss, redistributes outcomes across a session but does not remove the built-in edge. The same is true of chasing a bonus: playing longer to clear a wagering requirement increases your total wagering, which increases your expected loss, even if the bonus itself eventually becomes withdrawable.
The most useful habit is to treat the terms page as the offer itself. The headline number is marketing. The terms are the product. If the terms are not published, or if they are vague about weighting, caps, or expiry, the offer is not one you can evaluate, and an offer you cannot evaluate is one you cannot sensibly accept.
FAQ
Do free spins ever pay withdrawable cash?
Free spins themselves are not cash. They are spins at a fixed stake on specified slot titles. When they produce winnings, those winnings are usually credited as bonus funds, which means they carry their own wagering requirement and possibly a cashout cap. The terms for the free-spin offer state whether and how the winnings can become withdrawable.
Why do some games count less toward a wagering requirement?
Game weighting exists because different games carry different house edges. A game with a low house edge gives the house a smaller mathematical advantage on each wager, so the operator counts those wagers at a reduced rate or excludes them. The weighting is a structural choice by the operator, and it is printed in the promotion terms.
Is a comp the same as a refund of my losses?
No. A comp is a share of your theoretical loss, which is an estimate of what your play is worth to the house over the long run. It is calculated from your average bet, your decisions per hour, and the house edge, not from what you won or lost in a given session. Two players with the same actual result can earn different comps because their tracked play differs.
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This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.