What 10x, 20x and 35x Wagering Actually Cost
A wagering multiplier looks like a hurdle and behaves like a price. Every explanation tells you that 35x means staking thirty-five times something before you can withdraw; almost none tells you what that instruction costs, which is a number you can work out in one multiplication. This page does the sum, gives the highest multiplier that is worth accepting at a given return to player, and explains why the base the multiplier is applied to matters more than the multiplier itself.
A multiplier is an instruction to buy turnover
Staking money on a game with a house edge is not free, and it is not free in a way that can be priced exactly. Put a pound through a game that returns 96 per cent and you expect to have 96 pence afterwards. The four pence is the cost of the turnover, and it does not care whether you staked the pound because you wanted to or because a bonus term required you to.
A wagering requirement is therefore a purchase order. It says: put this much turnover through, at your own expected cost, and the bonus becomes yours. So the whole question of whether a bonus is worth taking reduces to comparing two figures that are both knowable before you start.
Write the multiplier as m, the base it applies to as B, and the return to player as r. Then:
Turnover = m × B · Expected cost = m × B × (1 − r)
A 35x requirement on a £50 bonus is £1,750 of turnover. On a game returning 96 per cent, that turnover has an expected cost of £70 — against a bonus worth £50. The offer is not a close call dressed up in small print; it is twenty pounds underwater before a single other term is read. If you would like the turnover figure for your own numbers without doing the multiplication, the wagering requirements calculator takes the multiplier, the base and the bonus and returns it, and understanding wagering requirements covers the vocabulary this page assumes.
The break-even multiplier
Set the expected cost equal to the bonus and the base cancels out entirely, which is the single most useful fact on this page. A bonus of B with a requirement of m times B breaks even when m × B × (1 − r) equals B — and B disappears from both sides. What is left is a ceiling that depends only on the game.
Break-even multiplier = 1 ÷ (1 − r) = 1 ÷ house edge
The size of the bonus is irrelevant to whether it is worth taking. A £10 bonus and a £500 bonus at the same multiplier and the same return to player are the same proposition, scaled.
| Return to player | House edge | Break-even multiplier on bonus funds | Same, if applied to deposit + bonus |
|---|---|---|---|
| 90.0% | 10.00% | 10.0x | 5.0x |
| 92.0% | 8.00% | 12.5x | 6.3x |
| 94.0% | 6.00% | 16.7x | 8.3x |
| 95.0% | 5.00% | 20.0x | 10.0x |
| 96.0% | 4.00% | 25.0x | 12.5x |
| 96.5% | 3.50% | 28.6x | 14.3x |
| 97.0% | 3.00% | 33.3x | 16.7x |
| 97.5% | 2.50% | 40.0x | 20.0x |
Read the third column as a hard ceiling and not as a target. At a typical 96 per cent slot the arithmetic runs out at 25x, which means the 35x and 40x requirements that were standard across the market for years were never marginal propositions — they were losing ones on the arithmetic alone, before the withdrawal cap, the expiry window and the contribution table were applied on top. That is worth stating plainly, because the usual framing of these offers treats a high multiplier as demanding rather than as unprofitable.
The base matters more than the number
Two offers can both advertise 35x and differ by a factor of two, and the difference is not in the multiplier at all. It is in what the multiplier multiplies. A requirement on bonus funds alone uses the bonus as the base. A requirement on deposit plus bonus uses both, so on a 100 per cent match it doubles the turnover while leaving the advertised number untouched.
| Offer shape | 10x on D+B equals | 20x on D+B equals | 35x on D+B equals | 40x on D+B equals |
|---|---|---|---|---|
| 200% match (£50 deposit, £100 bonus) | 15x | 30x | 52.5x | 60x |
| 100% match (£50 deposit, £50 bonus) | 20x | 40x | 70x | 80x |
| 50% match (£100 deposit, £50 bonus) | 30x | 60x | 105x | 120x |
The conversion is one line: a requirement of m times deposit plus bonus is the same as m × (1 + 1/q) times the bonus alone, where q is the match rate. The consequence is that the smaller the match, the worse a deposit-plus-bonus requirement gets, which is the opposite of the instinct most people bring to it. A 50 per cent match with 35x on deposit plus bonus is a 105x requirement on the bonus — three times the advertised figure, and more than ten times the current British cap.
Our guide to deposit-plus-bonus versus bonus-only wagering works through where each base appears in practice, and free bets versus deposit bonuses covers the sports-side equivalent, where the base is usually the free bet stake and is usually not returned with the winnings.
The cost, in pounds, at each multiplier
The table below prices a £50 bonus on a £50 deposit at a 96 per cent return to player. The final column is what remains of the bonus after the expected cost of the required turnover, assuming full contribution and no cap. Every figure was recalculated rather than copied, and none of them is a quote from any operator.
| Multiplier | Base | Turnover required | Expected cost at 96% | Net against a £50 bonus |
|---|---|---|---|---|
| 10x | Bonus only | £500 | £20.00 | +£30.00 |
| 20x | Bonus only | £1,000 | £40.00 | +£10.00 |
| 35x | Bonus only | £1,750 | £70.00 | −£20.00 |
| 40x | Bonus only | £2,000 | £80.00 | −£30.00 |
| 10x | Deposit + bonus | £1,000 | £40.00 | +£10.00 |
| 20x | Deposit + bonus | £2,000 | £80.00 | −£30.00 |
| 35x | Deposit + bonus | £3,500 | £140.00 | −£90.00 |
| 40x | Deposit + bonus | £4,000 | £160.00 | −£110.00 |
The crossover in the first block sits between 20x and 25x, exactly where the break-even formula puts it, which is the arithmetic checking itself. In the second block it sits between 10x and 12.5x, because the base has doubled. If you want the expected value of a specific offer rather than this general shape, the casino bonus expected value calculator takes the multiplier, base, return to player and contribution rate together.
What changed in Great Britain on 19 January 2026
Everything above describes a market that no longer legally exists for operators licensed in Great Britain. The Gambling Commission amended Social Responsibility Code Provision 5.1.1, and the amended provision states that licensees must not:
“Apply wagering requirements, which requires a customer to play through bonus funds, over a maximum of 10 times.”
“Include more than one type of gambling product (betting, casino, bingo, and lottery) within an incentive.”
Two details in that wording do a great deal of work. The first is the base: the cap is written against bonus funds, which closes the deposit-plus-bonus route that used to double a requirement without changing its headline. The second is the second bullet, which ends the structure where a sports offer was cleared through casino play or the reverse — a structure whose whole effect was to move turnover onto a product with a different edge from the one the customer came for.
Where the cap sits against the arithmetic: the break-even multiplier is 1 ÷ house edge, so a ceiling of 10 is at break-even for a game returning 90 per cent and below break-even for anything returning more. On a 96 per cent game, a 10x requirement on a £50 bonus costs about £20 of expected loss against £50 of bonus. The Commission did not publish this as its reasoning — it gave harm, complexity and transparency — but the effect is that a compliant bonus now sits on the profitable side of a line that a 35x bonus never did.
So when you meet a 35x requirement today, the useful question is not how to clear it but what you are looking at: an operator outside the Great Britain regime, an out-of-date page, or a requirement quoted against a base other than bonus funds. Our guide to the 10x bonus wagering cap covers the provision and its commencement history, the UK gambling regulation tracker records subsequent amendments, and how to choose a betting site explains where to find and verify a licence before any of this applies.
Four things the break-even number does not include
A formula that fits on one line is worth having and worth being honest about. Each of the following moves the real answer against the arithmetic above, never in its favour.
It assumes you can finish
The break-even multiplier is an expectation over many attempts, not a promise about one. A bonus balance that reaches zero before the turnover is complete ends the attempt, and the higher the multiplier the more often that happens. The arithmetic is a ceiling on which offers are worth considering, not a floor under what any single attempt will return.
It assumes what you win is collectable
Many bonuses cap the amount that can be withdrawn from bonus play, frequently at a small multiple of the bonus itself. A cap truncates exactly the outcomes that make the expected value positive, so a bonus with a generous multiplier and a tight cap can be worse than the arithmetic here suggests. Read the cap before the multiplier.
It assumes 100 per cent game contribution
The turnover figures above are contribution-weighted turnover. If the game you intend to play counts for ten per cent, the real money through the machine is ten times larger than the figure shown, and the expected cost changes with it. This is the single largest correction on this page and it has a page of its own.
It assumes the return to player you think you are getting
Return to player varies between titles and occasionally between configurations of the same title. The figure that matters is the one published in the information panel of the specific game you are about to play, not a market average, and a two-point difference in return to player moves the break-even multiplier by roughly a third.
The third of those is the largest and has its own arithmetic: our guide to clearing a casino bonus shows how a contribution rate turns a 10x requirement into 200x in real money staked, and game contribution rates sets out where those percentages come from. The second is covered in maximum withdrawal caps, and any unfamiliar term here is defined in the betting glossary.
Frequently asked questions
What does 35x wagering mean?
It means you must stake thirty-five times a stated base amount before the balance becomes withdrawable. The number on its own is incomplete, because everything depends on which base it multiplies. Thirty-five times a fifty pound bonus is one thousand seven hundred and fifty pounds of turnover. Thirty-five times deposit plus bonus, on a hundred per cent match, is three thousand five hundred pounds, which is the same as seventy times the bonus. Always read the multiplier and its base as one quantity, because the base can double the requirement without changing the headline number.
What is the highest wagering multiplier worth accepting?
For a requirement applied to bonus funds only, the break-even multiplier is one divided by the house edge, which is one divided by one minus the return to player. At a ninety-six per cent return to player the edge is four per cent and the break-even multiplier is twenty-five. At ninety-four per cent it is sixteen point seven, and at ninety per cent it is ten. Above that multiplier the expected cost of the turnover exceeds the bonus, so the offer is expected to lose money before any withdrawal cap or expiry is considered. This is a ceiling rather than a recommendation: variance, caps and forfeiture clauses all push the practical limit lower.
Is a 35x wagering requirement still allowed in Great Britain?
Not on bonus funds. Since 19 January 2026 the Gambling Commission's Social Responsibility Code Provision 5.1.1 states that licensees must not apply wagering requirements, which require a customer to play through bonus funds, over a maximum of 10 times. The same amendment added a ban on including more than one type of gambling product within an incentive. If you are looking at a thirty-five times requirement, you are either looking at an operator outside the Great Britain licensing regime, at a page that has not been updated, or at a requirement calculated on a base other than bonus funds. Which of the three it is matters, so check the licence before the maths.
Why is the 10x cap set at ten rather than some other number?
The Commission's stated reasons were reducing the likelihood of harm, reducing complexity and improving transparency while maintaining consumer choice, rather than any published arithmetic. It is worth noticing where ten falls all the same. The break-even multiplier is one divided by the house edge, so a cap of ten sits at break-even for a game returning ninety per cent and comfortably below it for anything returning more. On a ninety-six per cent game a ten times requirement on a fifty pound bonus costs about twenty pounds of expected loss against fifty pounds of bonus. A capped bonus is therefore on the right side of the arithmetic line in a way that an uncapped one frequently was not.
Does a lower wagering multiplier always mean a better bonus?
No, and treating the multiplier as the whole offer is the commonest way to misread one. Four other terms move the real cost at least as much: the base the multiplier is applied to, the game contribution rate, which can multiply your real stake by ten or twenty, the maximum withdrawal cap, which can make a large win uncollectable, and the expiry window, which decides whether the turnover is achievable at all. A ten times requirement cleared on a game contributing five per cent puts two hundred times the bonus through in real money. The multiplier is the first number to read and never the last.
Sources
The sources below were read on 20 September 2026. The wording of Social Responsibility Code Provision 5.1.1 was taken verbatim from the Commission’s consultation response and cross-checked against the Commission’s own record of changes to the Licence Conditions and Codes of Practice, which confirms the same two new requirements and the same commencement date. Every break-even multiplier, turnover figure and expected cost on this page was calculated independently rather than copied from any source, and no figure shown is a quote from any operator.
- Gambling Commission, consultation response, proposed changes to LCCP SR Code 5.1.1, carrying the final wording of the wagering requirement cap and the product-mixing ban — gamblingcommission.gov.uk
- Gambling Commission, Previous changes to the LCCP, recording the amendment to SR Code 5.1.1 at paragraphs 3a and 3b with effect from 19 January 2026 — gamblingcommission.gov.uk
- Gambling Commission, Gambling promotions to be safer and simpler, the announcement of the cap and its stated rationale — gamblingcommission.gov.uk
18+. Everything on this page is arithmetic about expected cost, and an expectation is not a plan. A bonus that is worth taking on paper is still a reason to stake money you did not otherwise intend to stake, which is the mechanism by which most bonuses do their real work. Decide the deposit before you read the offer, not after. Support, deposit limits and self-assessment tools are on our responsible gambling page.