Turnover is the whole trick. A casino bonus is not money until you have staked a multiple of it, and that multiple is always printed smaller than the headline percentage. Claim a £100 bonus carrying 30x and the cashier wants £3,000 of bets logged before a penny of it belongs to you. The calculation takes ten seconds, it settles whether an offer is worth an evening, and almost nobody does it before ticking the box.
Two things set the size of that job: the multiplier itself, and what the multiplier is applied to. Everything else on this page hangs off those two numbers.
The number behind every bonus
A wagering requirement is a staking target. The casino adds bonus credit to your balance, locks it, and releases it once your accumulated stakes reach a figure it has chosen. The figure is expressed as a multiplier: 25x, 30x, 40x, occasionally 60x on a promotion that looks generous from a distance.
What confuses people is that turnover counts stakes, not losses and not balance. A £1 spin removes £1 from the target whether it pays nothing or pays £40. The same £20 can cycle through your account two hundred times and clear £200 of requirement, which is why a modest balance can satisfy a four-figure target given enough spins and enough patience.
None of the conventions on this page are laws. Every operator drafts its own promotion rules, and the only document that governs your bonus is the set of terms attached to that specific offer on that specific day. Read it before you deposit, not after a withdrawal is refused.
Bonus only or bonus plus deposit
Here is the clause that quietly doubles the work. A requirement can be calculated on the bonus alone, or on the bonus added to the deposit that triggered it. The wording changes by a few characters; the arithmetic changes by a factor of two on a 100% match.
Take a £100 deposit matched at 100%, giving £100 of bonus credit and £200 in the balance. On a bonus-only basis the target is 30 lots of £100. On a bonus-plus-deposit basis it is 30 lots of £200. Same advertised multiplier, twice the staking.
| Multiplier | Bonus only (£100 bonus) | Bonus plus deposit (£200) | Extra staking |
|---|---|---|---|
| 25x | £2,500 | £5,000 | £2,500 more |
| 30x | £3,000 | £6,000 | £3,000 more |
| 35x | £3,500 | £7,000 | £3,500 more |
| 40x | £4,000 | £8,000 | £4,000 more |
| 50x | £5,000 | £10,000 | £5,000 more |
Read down the middle two columns and the point lands: 30x on the combined sum demands £6,000, while 50x on the bonus alone demands £5,000. The frightening-looking multiplier is the easier offer. Judge the base before you judge the number, every time.
Turnover, step by step
One run through, with nothing hidden. You deposit £50, a 100% match adds £50 of bonus credit, and the terms say 30x on the combined amount. The combined amount is £100, so the target is 30 × £100, which is £3,000 of accumulated stakes.
How long that takes depends entirely on stake size:
- £0.40 a spin: 7,500 spins to finish.
- £1 a spin: 3,000 spins.
- £2 a spin: 1,500 spins, provided £2 sits inside whatever stake cap the promotion imposes.
Each spin subtracts its own stake from the outstanding balance of the requirement, and the counter on the account page ticks down by exactly that amount.
Nothing about that calculation depends on whether you are winning. A player up £300 and a player down to their last £4 have identical turnover if they have staked the same total. The requirement is a condition on the bonus, not a debt owed to the casino, and abandoning it part-way is always permitted.
The max bet rule
Almost every bonus caps the stake you may place while the requirement is open. The cap is typically a flat figure, sometimes a percentage of the bonus, and occasionally both with whichever is lower taking effect. Firejackpots caps each stake at €10 while a bonus is live, and separately treats a single bet of a fifth of the bonus credit or more as irregular play, which is representative of the stricter end of the offshore market.
The reason the cap exists is straightforward. Without it, a player could put the entire bonus on one high-variance spin, and the casino would be exposed to a large payout against very little turnover. The reason the cap matters to you is harsher: breaking it once, by misreading a stake selector or leaving autoplay on a bigger bet, commonly voids the credit along with anything built on top of it.
Check the cap, set your stake under it, and leave it alone. It is the cheapest mistake on this page to avoid and the most expensive one to make.
Expiry windows and the clock
Bonus credit carries a shelf life. Seven days is common on reload and spin promotions, thirty days on a welcome package, and a handful of operators run to ninety. When the window closes, the unconverted bonus and any winnings attributed to it are stripped out of the balance.
The window is where an otherwise reasonable offer becomes unreasonable. A £3,000 target over thirty days is £100 of staking a day, which a casual player manages without thinking about it. The identical target over seven days is £429 a day, and clearing that pace means either longer sessions or bigger stakes, with the stake cap waiting at the top end. Short windows push players into exactly the behaviour the other clauses punish.
Work out the daily figure before claiming. If it looks like homework rather than entertainment, the honest answer is to leave the bonus alone and play with your own deposit instead.
Turnover by deposit size
Most readers arrive with one question: how much staking does my deposit actually commit me to. The grid below answers it for a 100% match on a bonus-only basis, so these are the lighter version of each figure. Double any cell to read it as bonus plus deposit at the same multiplier.
| Deposit, matched 100% | At 25x | At 30x | At 35x | At 40x |
|---|---|---|---|---|
| £10 | £250 | £300 | £350 | £400 |
| £20 | £500 | £600 | £700 | £800 |
| £50 | £1,250 | £1,500 | £1,750 | £2,000 |
| £100 | £2,500 | £3,000 | £3,500 | £4,000 |
| £250 | £6,250 | £7,500 | £8,750 | £10,000 |
| £500 | £12,500 | £15,000 | £17,500 | £20,000 |
Two readings are useful. Horizontally, the gap between a friendly multiplier and a steep one on a small deposit is trivial: £150 of extra staking on a tenner. Vertically, the same five-multiplier gap on a £500 deposit is £7,500 of extra staking, which is a different hobby. Large matched deposits are where wagering terms stop being a detail.
Max cashout caps
A cash-out cap limits what you may withdraw from a bonus however well the session goes. The clause reads something like “maximum withdrawal from this promotion: 5x the bonus amount”, and it applies after the requirement has been satisfied, not instead of it.
Clear a £50 bonus under a 5x cap, catch a feature round worth £900, and the withdrawable figure is £250. The remaining £650 is removed. Nothing has gone wrong and no rule has been broken; the ceiling was in the terms from the start.
This is why two offers with identical multipliers can be worth completely different amounts. A capped bonus is a bet on a small win, because a large one is confiscated at the ceiling by design. Spin-based rewards and anything given without a deposit carry tight caps most often, since that is how an operator limits its exposure on money the player never risked. An uncapped offer with a higher multiplier frequently beats a capped offer with a flattering one.
Sticky and non-sticky bonuses
Two structures exist, and the terms rarely use either word to describe themselves.
- Sticky. The bonus credit itself never becomes withdrawable. Finish the requirement and you keep whatever you built above the bonus, while the bonus portion is deducted at the cashier. Most casino match offers work this way.
- Non-sticky. The bonus converts to cash on completion and withdraws with the rest of the balance. Less common, and genuinely more valuable at the same multiplier.
- Parallel balance. A variant where deposit funds are played first and the bonus only activates once they are gone, which lets a player withdraw an early win without touching the bonus at all.
An illustration for the first case. A £100 sticky bonus is wagered up to a £420 balance; at withdrawal the £100 is subtracted and £320 pays out. Under a non-sticky structure the whole £420 would leave the account. Same play, same requirement, £100 of difference in the outcome, decided by one sentence in the terms.
Free spins carry their own terms
Extra spins are rarely free in the sense a reader assumes. On most sets of terms a win from a spin packet lands as bonus credit with its own requirement attached, rather than as cash in the main balance.
Say 50 spins produce £24 of wins and the terms impose 30x on spin winnings. Multiply £24 by 30 and £720 of staking is due before that £24 can leave the account. A larger spin win makes the arithmetic worse rather than better: £80 of winnings at the same multiplier generates a £2,400 target. The reward grows and so does the obligation attached to it.
Three details change the picture and should be checked in order: whether spin winnings are capped, which title the spins are locked to and at what stake value, and whether the clock on the spins runs separately from the clock on the deposit bonus. Our rundown of how spin packets are actually credited sits in the spins offer breakdown.
What clearing a bonus costs
Turnover has a price, and it is calculable. Every slot publishes a return to player, and the complement of that figure is the house edge: the share of each stake the game keeps over a very long run. The formula is short:
Expected cost = turnover × (1 − RTP)
Worked through on the £50 deposit from earlier. The target was £3,000, and on a slot returning 96% the edge is 4%. So £3,000 × 0.04 = £120 of expected cost to clear a £50 bonus. Move to a 94% title and the edge doubles to 6%, giving £3,000 × 0.06 = £180. On a £250 bonus at 40x bonus-only, the £10,000 target costs £10,000 × 0.04 = £400 at 96%.
Two warnings about that number. It is an expectation across many thousands of spins, not a forecast of your session; real outcomes scatter widely either side of it, which is the entire appeal of the games. And it says nothing about whether you win, only about the average drag on turnover. Used properly it answers one question well: is the bonus larger than the cost of unlocking it. A £50 bonus costing £120 to clear fails that test. A £250 bonus costing £400 fails it too.
Game weighting and what counts
Weighting is the clause that catches more players than the multiplier does. Stakes do not all count in full towards the target, because the casino discounts games where its own edge is thin. Slots carry the house edge the bonus maths is built around, so they typically count at 100%; low-edge table games are reduced to a fraction or barred.
The percentages below are the common pattern across casino promotional terms rather than any single operator’s published schedule, and the third column converts each one into the staking actually needed to satisfy the £3,000 target used throughout this page.
| Game category | Typical contribution | Staking needed for £3,000 | Practical read |
|---|---|---|---|
| Slots, most titles | 100% | £3,000 | The route the maths assumes |
| Jackpot and bonus-buy slots | 50% or excluded | £6,000 at 50% | Often carved out separately |
| Video poker | 20% | £15,000 | Low edge, heavily discounted |
| Baccarat | 10% | £30,000 | Rarely a sensible route |
| Roulette | 5% | £60,000 | Frequently capped or void |
| Blackjack | 0% to 5% | £60,000 at 5% | Commonly contributes nothing |
| Live dealer tables | Usually 0% | No progress | Excluded on most terms |
Look at the blackjack row against the slots row. A £10 blackjack hand at 5% weighting moves the counter by 50p, so the twenty hands that feel like real play clear £10 of a £3,000 target. We do not recommend attempting to clear a bonus on live dealer tables under any circumstances: on most terms the contribution is zero, and on some the bet voids the promotion outright rather than simply failing to count.
What the UK rules cover
British players have a layer of protection here that does not travel. The Gambling Commission’s rulebook for licensees requires a British-licensed operator to present significant bonus terms clearly and fairly, and the Commission treats misleading promotional wording as a licensing matter rather than a marketing quibble (1). Advertising sits under the CAP code in parallel, which requires the significant conditions of a promotion to appear with the offer rather than three clicks away (3).
The most useful single rule came out of Competition and Markets Authority enforcement: licensed operators undertook to stop requiring customers to gamble their own unspent deposit before withdrawing it, and to stop imposing withdrawal restrictions that consumer law treats as unfair (2). That is why a Commission-licensed site lets you take back a deposit you have not played, while terms elsewhere sometimes impose a deposit-turnover condition with no bonus involved at all.
None of it binds a casino that holds no Great Britain licence. An offshore operator writes its own promotional terms, polices them itself, and answers to its own regulator; our reading of which regulator stands behind this operator sets out what that swap costs a British account holder. The reviewed casino’s own welcome package, at 30x on bonus plus deposit, is a fair example of terms no Commission licensee would be allowed to advertise as casually, and the figures for it are laid out on the welcome package page.
Five checks before you opt in
Sizing up an offer takes under a minute once you know the order to read in. Run these five and the answer arrives before any money moves.
- Multiplier and base. Find both, multiply them out into a pound figure, and compare that figure against what you normally stake in a month.
- Weighting. Confirm that the games you enjoy count, and at what percentage. A 100% slots offer is useless to someone who only plays roulette.
- Cash-out ceiling. Look for a maximum withdrawal clause. A low one turns a large bonus into a small one.
- Window and stake cap. Divide the target by the days available, then check the daily figure is reachable without breaching the maximum bet.
- Structure. Establish whether the bonus itself withdraws at the end or is deducted, and whether deposit funds play first.
Where any of the five is not stated plainly in the promotion, treat the omission as the answer and move on. The rest of our neutral explainers, including the identity checks that arrive at withdrawal time, are collected in the guides index.
Where the maths turns against you
Four patterns account for most of the money readers tell me they have lost to bonus terms, and none of them involve bad luck.
Reading the multiplier and stopping there is the first. A 25x offer on a combined base with 10% slot weighting on the titles you like is worse work than a 45x offer on the bonus alone at 100%, and the headline says the opposite. The second is treating the requirement as a debt: it is a condition attached to credit you were given, and walking away from an unfinished one costs you nothing you deposited. The third is the stake cap, broken late in a session when attention drifts.
The fourth is the quiet one. Chasing a requirement changes how you play, pushing sessions longer and stakes higher than they would otherwise go, and that shift is the real cost of a bonus rather than the expected drag calculated above. If a target is driving the decisions instead of the games, the sensible response is to stop and take stock. Our page on setting limits and getting support covers the tools worth putting in place first, and GamCare answers calls from British players without charge or judgement.
Frequently asked questions
What does 30x wagering mean in pounds?
Thirty times the qualifying amount must be staked before withdrawal. On a £50 bonus that is £1,500 of bets; on £50 bonus plus £50 deposit, £3,000.
Which base is worse for the player?
Bonus plus deposit, every time. At the same multiplier a 100% match doubles the staking, so 30x on bonus plus deposit is harder work than 40x on the bonus.
Which games clear a bonus fastest?
Slots, in almost every set of terms. Most count 100% of each stake, while table and live dealer games are discounted to a fraction or barred from bonus play.
How much does clearing a bonus cost?
Turnover multiplied by the house edge. Cycling £3,000 through a 96% slot costs roughly £120 on average, which is the figure to weigh against the bonus itself.
Why does the counter move so slowly?
Weighting, usually. A stake on a game counting 10% removes only a tenth of its value from the requirement, so £10 wagered clears £1 of the target.
What happens when the bonus expires?
Removal of the bonus and anything won with it. Expiry windows typically run from seven to thirty days, and an unfinished requirement at the deadline forfeits the lot.
Can one oversized spin void everything?
Yes, under most maximum-bet clauses. Breaching the stake cap even once gives the operator grounds to cancel the bonus and every pound won while it was active.
How are free-spin winnings treated?
Normally as bonus credit, not cash. Winnings from extra spins usually arrive with their own multiplier attached, so a £30 spin win can carry hundreds of pounds of staking.
Do UK rules apply at an offshore casino?
No. Gambling Commission conditions bind only licensed operators, so a casino outside the register writes whatever bonus rules it likes and polices them itself.
Which multiplier is worth claiming?
Nothing fixed, though a bonus-only base in the twenties or low thirties, full slot weighting and no withdrawal ceiling mark the friendlier end of the market.
Sources
- Gambling Commission, licence conditions and codes of practice: the obligations a British licensee carries on promotional terms and fair presentation
- Competition and Markets Authority, online gambling and consumer protection law: the undertakings that ended forced wagering of unspent deposits
- Committee of Advertising Practice, UK non-broadcast code: the requirement that significant promotional conditions sit alongside the advertised offer