Start with the correct balance
Use the amount of bonus funds to which the stated requirement applies. Do not apply a wagering requirement to a withdrawable deposit balance. The Gambling Commission requires deposit and bonus balances to be shown separately and says customers must not have to wager their deposit balance before withdrawing it, subject to necessary regulatory checks.
An advertised bonus number and the usable bonus amount are not always the same input. Read the offer’s actual terms, including the treatment of free-spin winnings or other credits, before choosing a number. This page does not list or recommend a live offer.
The arithmetic is straightforward
Multiply the relevant bonus amount by its wagering multiplier to find the qualifying target. If only part of each eligible stake counts, divide that target by the contribution rate expressed as a fraction. The result is nominal: the terms may restrict games, stakes, time or qualifying transactions.
A worked illustration uses a £10 bonus at 10x. The qualifying target is £100. If the stated contribution were 50%, £200 of eligible stake would be needed to produce £100 of qualifying contribution. This is an arithmetic example, not a GB promotion, a suggested amount to spend or a forecast of cost.
| Illustrative input | Value |
|---|---|
| Bonus amount | £10 |
| Multiplier | 10x |
| Qualifying target | £100 |
| Contribution in this illustration | 50% |
| Nominal eligible stake | £200 |
Know what the number leaves out
A contribution percentage is not a return percentage. A 50% contribution means that half an eligible stake counts towards the stated requirement; it says nothing about the result of the game. RTP and volatility describe different properties again.
Do not subtract a supposed average return and call the remainder the cost of completing the requirement. Actual results vary, the balance can be exhausted first and the terms can make particular transactions ineligible. No calculator can turn the requirement into a guaranteed route to a withdrawal.
Use current GB terms
The Commission caps wagering requirements attached to bonus funds at 10 times. The change took effect on 19 January 2026. An individual incentive also cannot combine more than one of the specified product types: betting, casino, bingo and lottery.
Check the terms and keep cash and bonus balances separate. A permitted multiplier does not establish whether an offer is suitable for you, and this calculator does not create or change an obligation in your gambling account.
A few clear answers
Does the result predict the cost of a bonus?
No. It calculates nominal qualifying stake, not wins, losses, duration or the amount you can withdraw.
Why can I not enter a multiplier above 10?
This version is for current GB bonus-fund requirements and follows the 10x cap. It does not apply that cap to a different jurisdiction or to your deposit balance.
Sources behind this note
Public documentation checked on 10 November 2026. Account-specific conditions and game versions may differ. This is not a record of a test deposit or played round.
- Gambling Commission — Restrictions on withdrawing deposit and deposit winnings
- Gambling Commission — 5.1.1 - Rewards and bonuses – SR code
- Gambling Commission — Previous changes to the LCCP
- Gambling Commission — Socially responsible incentives: what operators need to know
- Gambling Commission — Proposal 1 - Ban or limit the use of wagering requirements