Almost nobody loses a bonus balance by failing to complete the wagering. They lose it by completing the wagering while breaching a clause they did not know was running in the background. Six clauses do nearly all of that work. Each is quoted below in the shape it usually appears, followed by what it does in practice.
1. Maximum stake while a bonus is active
"The maximum bet permitted while wagering requirements are outstanding is £5 per spin or 10% of the bonus, whichever is lower."
This is the single most common cause of a voided balance. It applies for the entire duration of the wagering run, not just to the first few spins, and it is enforced retroactively at withdrawal — the system reviews the wager history, finds one spin over the ceiling, and voids. One spin. A feature-buy that costs 100× the base stake counts as a single wager at that value on most implementations, which catches people who were being careful about everything else.
2. Game weighting
"Slots contribute 100%. Table games and video poker contribute 10%. Selected titles are excluded."
Weighting is not a restriction, it is a multiplier on the work required. A £3,500 wagering target at 10% weighting is £35,000 of actual stake. The exclusion list is the sharper edge: staking on an excluded title may contribute nothing at all, and on stricter terms may void outright rather than simply fail to count. The list is normally a separate linked page, and it changes.
3. Irregular or low-risk play
"Bet patterns that reduce variance, including but not limited to covering opposing outcomes, will be treated as irregular play."
The broadest clause in any bonus page, and deliberately so. It targets strategies that clear turnover with minimal exposure — hedging red and black, betting both sides of a market, running near-guaranteed low-margin bets to burn through a requirement. Because it is written openly ("including but not limited to"), it is also the clause with the most operator discretion attached, and it is the one to be most careful around.
4. Maximum conversion
"The maximum amount convertible from bonus funds to real money is 5× the bonus amount, capped at £500."
Not a restriction on the win, a redefinition of it. Complete the wagering with a balance of £3,000 against a £500 conversion cap and the £2,500 difference is removed at conversion. Nothing has gone wrong; the clause did exactly what it said. This is the number to read before accepting a bonus, because it sets the ceiling on the entire exercise.
5. The expiry window
"Bonus funds and any winnings derived from them expire 7 days after credit."
Expiry interacts badly with the maximum-stake clause: a large requirement plus a low stake ceiling plus a short window can be arithmetically unreachable. Multiply the target by the weighting, divide by the maximum stake, and you have a minimum number of spins. Compare that to the hours available. Some offers do not survive this calculation, and it takes about a minute to run.
6. Deposit-method exclusions
"Deposits made using certain e-wallets do not qualify for this promotion."
Quiet, mechanical, and it fires at the moment of deposit rather than at withdrawal. The bonus simply never attaches, or attaches and is later removed. The fix is trivial — check the excluded methods before funding — and the annoyance of not having done so is entirely disproportionate to the effort.
The order to read them in
- Maximum conversion — sets the ceiling on the whole thing.
- Wagering multiplier and what it is applied to (bonus only, or bonus plus deposit).
- Game weighting and the exclusion list.
- Maximum stake while wagering.
- Expiry window.
- Deposit method eligibility.
Read in that order, most offers resolve to a yes or no within two minutes. GambleDragon runs a clause-by-clause reading of a typical bonus page if you want the same exercise done on a live example.
FAQ
If I breach the maximum stake once, is everything void?
On most terms, yes — the wording is usually written to void bonus funds and winnings derived from them, not to void the single offending wager. Some operators apply it more leniently in practice. The terms are what they can rely on.
Does a deposit balance get caught by these clauses?
It should not. Where deposit and bonus funds are kept in separate wallets, real-money balance is normally unaffected. Where the operator merges them, the position is murkier — which is a good reason to prefer separated wallets.
Can I decline a bonus after it has been credited?
Usually yes, and it is often the right move. Most cashiers have a forfeit option that removes the bonus and its restrictions, leaving the deposit playable without a wagering requirement attached.
Sources
- Gambling Commission — Public and players guidance (accessed 2 August 2026)