Free educational tool · 18+
Wagering calculator UK
Understand a bonus before accepting it. Translate the small print into pounds of turnover, including game contribution rates. This tool does not predict winnings or tell you how much to gamble.
Understand the terms
Wagering calculator
See how a bonus multiplier and game contribution change the amount of qualifying play. Use the figures in your offer's written terms.
Turnover is not a predicted loss, deposit amount or guaranteed withdrawal. You can lose the bonus before completing wagering. You do not need to keep playing to finish a promotion.
Formula, example and limitations
Qualifying target = bonus funds × multiplier. Turnover = qualifying target ÷ (game contribution ÷ 100).
Example: £20 × 5 = £100 of qualifying wagering. At a 50% contribution, that represents £200 of stakes. These are hypothetical figures, not an operator offer.
At 0% contribution, the game cannot progress a positive requirement. A 0× multiplier means no promotional playthrough; other terms and verification can still apply. Results round upwards to the nearest penny; operator accounting can differ.
This tool assumes one contribution rate throughout. It does not calculate progress already made, mixed-game play, expiry, stake limits, excluded bets or maximum cashout. For free-spin winnings, enter the resulting bonus amount subject to wagering, not the nominal value of the spins.
The Gambling Commission's bonus wagering cap is 10×, effective 19 January 2026. The nominal multiplier and game contribution are separate. Read the official rule and explanation.
What should you read next?
Understand wagering requirements, check the other promotion terms, or learn about maximum cashout caps.
Arithmetic reviewed 24 September 2026. No personal information is submitted by this calculator. If gambling is causing concern, visit our support resources.