Spinow tools · 18+ · Education only
Wagering requirements calculator
Understand how a bonus condition translates into turnover. Enter the terms you are reading; this tool does not advertise or verify any Spinow offer.
Use the same currency for every amount. Values stay in your browser.
Your calculation
- Total credited wagering required
- 1,000
- Credited wagering remaining
- 1,000
- Actual stakes needed at this contribution
- 1,000
100 × 10 = 1,000 total required.
These figures are turnover, not a recommended budget, expected loss or guaranteed withdrawal. Your balance can run out before a requirement is completed.
How the calculation works
First, choose the amount to which the multiplier applies. For bonus-only terms, use the bonus amount. For deposit-plus-bonus terms, add those two amounts. Multiply that base by the wagering multiplier to get the total credited turnover required.
Subtract wagering already credited by the operator, with a minimum remaining balance of zero. Divide the remaining amount by the game contribution expressed as a decimal. A 20% contribution means only 0.20 of each 1 staked counts. If you change games, calculate each stage separately.
Worked example: contribution changes the result
A hypothetical 100 bonus with a 10× bonus-only requirement needs 1,000 in credited wagering. If 200 has already been credited, 800 remains. At 20% contribution, that means 800 ÷ 0.20 = 4,000 in further stakes. At 100%, the same remaining requirement means 800 in stakes. This is an arithmetic example, not a current promotion or a suggestion to gamble.
What the calculator cannot tell you
It does not predict profit, losses, the chance of finishing, or whether an operator will permit a withdrawal. It assumes a constant contribution rate and does not model separate balances, capped winnings, rounding per bet, expiry deadlines, excluded bets or maximum-stake restrictions. Read the actual terms and the rules that apply in your jurisdiction. A selectable calculation basis does not establish that a particular term is permitted there.
Use credited turnover from the operator’s progress indicator, not your deposits, losses or total stakes on partially contributing games. Reaching zero here only means the arithmetic requirement is met; other conditions can still apply.
Sources and further reading
The Gambling Commission’s terminology guidance explains bonus funds and wagering conditions. Its consultation discussion of game weighting illustrates partial contribution. These are Great Britain sources, not a statement of worldwide rules.
For plain-language definitions in six languages, see the Spinow.info gambling glossary. If gambling is becoming difficult to control, see our responsible-play information. Do not chase losses or increase spending to finish a bonus.
Prepared by Spinow Editorial · Published 15 September 2026. To cite this tool, use this page’s URL and the date accessed.