Wagering requirement calculator

What each input means

Deposit

The amount you plan to deposit. The bonus is a percentage of this, so it drives everything else. Enter the amount you would deposit anyway — never raise a deposit just to get a bigger bonus.

Match %

The percentage the casino adds. 100% doubles your deposit, 400% adds four times it. For multi-deposit packages, enter only the deposit you are about to make.

Max bonus

The cap on the bonus amount. A 200% match capped at $1,000 stops growing at a $500 deposit. Enter 0 if there is no cap.

Wagering

The multiplier: 20x, 30x, 35x, 40x and so on. This is the most important input; small changes move the result a lot.

Applies to

Whether the multiplier is applied to the bonus only or to deposit plus bonus. D+B doubles the turnover on a 100% match. The terms always say which; if they say "bonus and deposit" or "D+B", pick deposit + bonus.

Game contribution

How much each bet counts toward wagering. Slots are usually 100%; table and live games often 5–20%. Real turnover is divided by this percentage.

Game RTP

The return-to-player of the game you will play. House edge is 100% minus RTP. Check the game's info screen — the same slot may run at 94%, 95% or 96%+ depending on the casino.

Max bet

The largest bet allowed while the bonus is active. The calculator warns you if your stake is above it. Enter 0 if the offer has no such rule (rakeback, wager-free spins).

Your stake

The bet per spin you plan to use. It does not change the expected value, but it decides how many spins and hours the requirement takes.

Time limit

Days allowed to complete wagering. Used to show hours of play per day at roughly 500 spins per hour. Enter 0 if the terms do not state one.

Currency

Every amount on BonusMath is in US dollars. The formula is identical in any currency, so if your balance is held in another one, enter its figures and read the results in that unit.

Free spins, spin value, spin wagering

For offers with spins: count, stake per spin and the multiplier applied to spin winnings. Spin value is added as expected winnings minus the expected cost of wagering them, never below zero.

Rakeback

The share of the house edge returned to you. For offers with no match, it is applied to $40 of turnover per $1 of deposit — the same work a 40x bonus requires — so offers can be compared on one scale.

What the results mean

The spins figure is turnover divided by your stake, rounded up. Hours assume about 500 spins an hour — a steady pace without turbo or autoplay. If the per-day figure is above one hour, the offer will feel like a chore; above two, consider a lower deposit, a higher stake within the max bet, or declining the bonus altogether.

Three versions of the same bonus

The same headline — 100% up to $500 at 35x — can mean very different things. Here is one $100 deposit run three ways, so you can see how much the small print matters:

Wagering on deposit plus bonus doubles the turnover and pushes the expected value down to the floor of minus your deposit. Blackjack has a tiny house edge — about 0.5% with good basic strategy — but at 10% contribution you need $35,000 of hands, and even half a percent of that is $175. That is why casinos weight table games down, and why you should clear bonuses on slots.

Worked example, step by step

For the default numbers, the calculator's working reads like this. Every figure on this site, including the true values in our rankings, is produced by exactly these steps.

Notice that the expected loss ($140) is larger than the bonus ($100). Whenever the multiplier is higher than one divided by the house edge — 25x at 96% RTP — that will be true. Our wagering requirements guide explains this break-even rule in detail.

Limitations — read before you rely on it

• It is a linear model. Real players stop when their balance hits zero, which makes very tough bonuses slightly less costly than shown. The model still ranks offers in the right order.
• It ignores variance. Two bonuses with the same EV can feel completely different. High-volatility slots raise the chance of both busting and big wins.
• It cannot read clauses. Max cashout caps, excluded games, country restrictions and verification rules are not in the formula. Check them in the terms, and see our max bet guide and sticky bonus guide.
• Expected value is not a forecast. A positive score does not mean you will win. It means that, averaged over many players, the offer returns more than it costs.

If you only want the answer for the offers we track, the rankings table shows them all at a glance, and each review — for example BitGuruz or BC.Game — shows the working for several deposit sizes.