The number on the banner is not the number in your account
A promotional credit looks like free money because it is displayed as a single figure. What that figure represents is a conditional liability: the operator will let you play with it, and under a specific set of rules, some part of it may become withdrawable. The calculation that matters is not how the headline amount was chosen. It is the arithmetic that sits between the credit and a cash balance.
Two different systems produce the two kinds of value players usually mean when they say bonus dollars. The first is a promotional credit attached to a deposit, a sign-up, or a batch of free spins. The second is the slower accumulation of loyalty or comp value from tracked play. They are calculated differently, they decay differently, and confusing them is how a player ends up disappointed at the cashier.
What wagering requirements measure
A wagering requirement, sometimes called playthrough, is a multiplier. It states how much total wagering must occur before bonus-related funds can be withdrawn. The arithmetic is simple: the bonus amount is multiplied by the requirement to produce a total turnover figure.
Suppose a promotion grants a 50-unit bonus with a 30x requirement. The player must place 1,500 units of total wagers before the bonus portion can be withdrawn. That does not mean the player must deposit 1,500 units, or lose 1,500 units, or win 1,500 units. It means the sum of every bet placed, win or lose, must reach that figure.
The trap in that arithmetic is that wagering does not preserve the balance. Each wager carries a house edge, so the expected result of grinding through 1,500 units of turnover is a loss equal to the house edge multiplied by that turnover. The bonus is not a gift of 50 units. It is a subsidy on the expected loss of 1,500 units of action, and whether that subsidy leaves anything behind depends on the edge of the games the player chooses.
Game weighting changes the effective requirement
Not every wager counts toward playthrough equally. Operators assign each game category a weighting, usually expressed as a percentage of each unit wagered that counts toward the requirement. A slot spin might count in full, while a table game wager might count at a reduced rate or not at all.
This matters because the player is not choosing between games that are equivalent. They are choosing between games with different house edges and different contribution rates. A game that contributes slowly but carries a low house edge can be a better path through the requirement than a game that contributes quickly but bleeds the balance faster.
| Factor | What it controls | How to read it |
|---|---|---|
| Wagering multiplier | Total turnover required before withdrawal | Multiply by the bonus amount; the product is the turnover target |
| Game weighting | How much of each wager counts toward that target | A reduced contribution rate raises the effective turnover required |
| House edge of the chosen game | The expected loss on the way to the target | Lower-edge games preserve more of the balance, all else equal |
| Maximum cashout cap | The ceiling on what can be withdrawn from bonus winnings | Any balance above the cap is forfeited at withdrawal |
| Expiry window | How long the requirement remains active | Unfinished playthrough voids the bonus and related winnings |
Caps and expiry windows are part of the calculation
A maximum-cashout cap is a ceiling on how much of the bonus-derived balance can ever be withdrawn. If the cap is lower than the balance the player has built, the excess is removed at the point of withdrawal. The cap is not a minor footnote; it is the upper bound on the entire exercise, and it should be read before the first spin.
Expiry windows work the same way from the other side. A bonus that must be wagered within a set number of days converts the playthrough requirement into a pace requirement. A player who cannot realistically produce the required turnover inside the window is accepting a promotion they cannot complete, which means the bonus and any winnings attached to it are forfeited by design.
Free spins follow the same logic with one extra step. The spins themselves are played at a fixed stake on specified titles. Whatever they produce is usually credited as bonus funds, not cash, which means the wagering requirement applies to the winnings rather than to the spins. A batch of free spins is therefore a two-stage calculation: first the expected value of the spins at their fixed stake, then the playthrough arithmetic on whatever survives.
How loyalty and comp value is calculated
Loyalty programmes calculate value from tracked play, and the core concept is theoretical loss. The operator does not care only about what a player lost on a given day. It cares about what the player's action is worth on average, because that average is what the programme can budget against.
The calculation has three inputs: average bet size, decisions per hour, and the house edge of the game being played. Multiply the three together and you get the expected loss per hour, which is what the venue uses to decide how much of that loss to return as comps, points, or tier progression.
As a labelled example: suppose a player bets an average of 10 units per decision, makes 60 decisions per hour, and plays a game with a house edge of 2%. The expected loss per hour is 10 multiplied by 60 multiplied by 0.02, which equals 12 units. That is the theoretical loss, not the actual result of any single session. The player might win or lose far more than 12 units in a given hour; the programme is built on the average, not the variance.
No programme publishes its exact reinvestment rate, and none of the thresholds or tier benefits in this article are universal. What a player can do is understand the shape of the calculation: the venue estimates the value of the player's action, then returns a fraction of that estimate as a benefit. A player who knows their own average bet, pace, and game edge can estimate their own theoretical loss and judge whether the comps on offer represent a meaningful return on that number.
Reading a promotion before opting in
The calculation behind bonus dollars is not hidden. It is distributed across the promotion's terms page, the game weighting table, and the cashier screen. The discipline is to assemble those pieces before playing, not after.
Start with the wagering multiplier and the game weighting table together, because they determine the real turnover target. Then read the maximum-cashout cap, because it sets the ceiling on the entire exercise. Then check the expiry window, because it determines whether the target is reachable at the player's own pace. Only then does the headline bonus amount mean anything.
None of this changes the underlying arithmetic of the games themselves. A bonus does not alter the house edge on a slot spin or a blackjack hand. It changes the player's bankroll and the conditions attached to it. A player who understands that distinction can evaluate a promotion as what it is: a structured discount on the expected cost of play, with a set of conditions that determine whether the discount survives contact with the cashier.
FAQ
Does a wagering requirement apply to the bonus only or to the deposit as well?
It depends on the promotion. Some requirements apply only to the bonus amount; others apply to the bonus plus the deposit that triggered it. The terms page states which figure is multiplied. A requirement on the combined amount is a much larger turnover target than the same multiplier applied to the bonus alone, so this distinction should be read before the first wager.
Why does the bonus balance sometimes disappear after a big win?
Most likely because the win pushed the balance above the maximum-cashout cap, and the excess was forfeited at withdrawal, or because the expiry window closed before the playthrough requirement was completed. Both mechanisms are written into the promotion terms. The balance shown during play is not the amount that will be paid; the withdrawal screen applies the caps and the requirement status before releasing funds.
Are loyalty points and bonus dollars calculated the same way?
No. Bonus dollars are calculated from a fixed promotional amount and a playthrough multiplier. Loyalty points are calculated from tracked play, using an estimate of theoretical loss based on average bet, pace, and house edge. A promotional credit is a conditional liability with a defined end state; a loyalty balance is an ongoing accrual whose value is set by the programme's own reinvestment rate, which the venue controls and does not publish.
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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.