Wagering requirements: what a bonus actually costs you
Every guide explains that 35× wagering on a £20 bonus means £700 of turnover. Almost none of them takes the next step and works out what that £700 of turnover costs you — which is the only number that decides whether the offer is worth claiming.
Turnover is the requirement, not the price
A wagering requirement tells you how much you must stake before bonus winnings become withdrawable. Multiply the bonus (or, on worse terms, the deposit plus the bonus) by the multiplier and you have the turnover.
The turnover figure by itself is neutral. £700 of stakes is not £700 of loss — most of it is recycled winnings being staked again. What it costs you is the house edge charged on every one of those stakes.
On a slot with a 96% return to player, the house keeps 4% of everything staked. Run £700 through it and the expected loss is £28. Against a £20 bonus, the expected cost of clearing it is larger than the bonus itself. That is the arithmetic the headline never shows, and it is why the honest answer to "is this bonus worth it?" is often no.
The four numbers that decide everything
- The basis. "35× bonus" and "35× deposit + bonus" look almost identical and differ by a factor of two in turnover. The second is always worse and is common enough to check every time.
- The multiplier. Below 20× is genuinely good, 30–35× is the market standard, 45× and above is usually not worth claiming at normal deposit sizes.
- The maximum bet while wagering. Typically £5 per spin. Exceed it once, even accidentally, and most terms allow the operator to void the bonus and everything it produced.
- The cash-out cap and expiry. A cap on winnings from free spins — often £50 or £100 — turns a big win into a small one. An expiry of seven days makes a large turnover requirement mathematically impossible for a casual player.
Game weighting: the multiplier behind the multiplier
Slots normally contribute 100% of each stake toward wagering. Table games often contribute 10%, and live dealer games sometimes contribute nothing at all. If blackjack contributes 10%, a £700 requirement becomes £7,000 of blackjack stakes.
This matters more than it looks, because the games with the lowest house edge are exactly the ones weighted lowest. You cannot clear a bonus cheaply by moving to a 0.5% edge game — the weighting is designed to prevent that, and terms usually exclude the strategy explicitly.
When a bonus is actually worth taking
- No wagering at all on free spin winnings, paid as cash. Several UK operators now do this, and it removes the question entirely.
- Low multipliers on bonus only, at a deposit size you were going to make anyway.
- No cash-out cap, so an unlikely large win is actually payable.
- An expiry long enough that clearing it does not force you to play faster or larger than you meant to.
- And the one that matters most: an offer you would still take if the bonus were not there. A bonus is a discount on something you were buying, not a reason to buy.
Run your own numbers
We built a calculator that does the second step rather than the first: it takes the bonus, the multiplier, the basis and an RTP, and returns both the turnover and the expected cost of generating it. On the market's median terms it returns a negative number, and the page says so rather than burying it.
Use it before claiming anything, and use the four numbers above as the inputs — read from the terms page, not from the banner.
Open the wagering calculator →Three offers, priced side by side
Comparing bonuses by headline size is the mistake the format is designed to encourage. The only fair comparison prices each offer the same way: work out the turnover, apply the house edge of the game you would actually play, and see what is left. The three examples below use a 96% return to player, which is typical of mainstream British slots.
Offer A — "100% up to £50, 35× bonus". Deposit £50, receive £50. Turnover is 35 × £50 = £1,750. At a 4% house edge the expected cost of generating that turnover is £70. The bonus is £50. You are paying £70 in expected losses for £50 of bonus funds, and that is before considering whether you would have staked £1,750 at all.
Offer B — "50 free spins at 10p, no wagering, £50 cap". The spins are worth £5 in stake value. There is no turnover requirement, so the expected value is straightforwardly positive: roughly £4.80 back at 96% RTP, paid as cash, with the cap only binding if you get lucky. This is a small offer that is worth more than Offer A.
Offer C — "200% up to £200, 40× deposit + bonus". Deposit £100, receive £200, so the basis is £300 and the turnover is £12,000. Expected cost at 4%: £480. The bonus is £200. This is the shape that produces the largest headline and the worst arithmetic, and it is common at the aggressive end of the market.
The ranking by headline is C, A, B. The ranking by value to you is B, A, C — exactly reversed. That inversion is not a coincidence or a trick of the examples; it follows from the fact that the requirement scales with the bonus while the value does not.
Why the same 35× costs more on some games than others
The multiplier is only half of the price. The other half is the house edge of the game you clear it on, and that varies by a factor of ten across a normal lobby.
A slot at 96% RTP charges 4p per pound staked. A slot at 92% — and plenty exist, often the same title configured differently — charges 8p. Clearing a £1,750 requirement costs £70 on the first and £140 on the second, for an identical bonus and an identical multiplier.
Table games look like the escape route and are not. Blackjack played correctly runs at a house edge under 1%, which would make clearing almost free — so terms weight it at 10% or 20% of stake toward the requirement, or exclude it outright. A £1,750 requirement at 10% weighting becomes £17,500 of blackjack stakes, and at that volume the small edge reasserts itself.
This is why the honest question about a bonus is never "how big is it" but "what do I have to do, on which games, to keep anything". The answer to the second question is in the terms, and it is usually two clicks from the banner rather than on it.
Deposit plus bonus: one extra word, double the price
The most expensive three words in a bonus term are "deposit and bonus". A 35× requirement on a £50 bonus is £1,750 of turnover. The same 35× on deposit and bonus, with a £50 deposit matched by £50, is 35 × £100 = £3,500. Same headline, same multiplier, twice the work, twice the expected cost.
The wording used varies: "35× the bonus amount", "35× the sum of deposit and bonus", "wagering applies to deposit + bonus", "35× (d+b)". They are not interchangeable and the difference is never highlighted.
There is a third variant worth knowing about, mostly on no-deposit offers: wagering applied to winnings rather than to the bonus. "40× winnings" on a free-spin package means the requirement is calculated from whatever the spins returned, so a lucky spin creates a larger obligation than an unlucky one — which is counter-intuitive and, on a big win, effectively unclearable within the expiry.
When you compare two offers, normalise them to turnover before you compare anything else. Our calculator does this step so the comparison is like for like.
The 2025 stake limits changed the arithmetic
Since 9 April 2025 the maximum stake per game cycle on online slots in Great Britain has been £5 for players aged 25 and over, and since 21 May 2025 it has been £2 for players aged 18 to 24. Both limits are statutory: they apply at every British-licensed operator, and no promotion can override them.
For bonus clearing this matters in a way most guides have not caught up with. A large wagering requirement used to be clearable quickly at high stakes; it now has a hard ceiling on how fast turnover can accumulate. A £12,000 requirement at £5 a spin is 2,400 spins. At three seconds a spin that is two hours of continuous play, and most offers expire in seven to thirty days.
For an 18 to 24-year-old the same requirement is 6,000 spins at £2. Any offer with a heavy multiplier and a short expiry is therefore substantially worse for younger players than the terms suggest, because the terms were written for a different ceiling.
The separate maximum-bet-while-wagering clause still applies on top, and it is usually lower than the statutory cap — commonly £5, sometimes £2. Where the two differ, the stricter one governs, and breaching either can void the bonus.
How this compares with the rest of the market
Across the offers whose terms we have read line by line and published in this catalogue, the pattern is consistent. Multipliers cluster at 30× to 40× on bonus only. Maximum bet while wagering is almost always £5, occasionally £2. Expiry is most often seven days for free spins and thirty days for a matched deposit. Cash-out caps appear on nearly every free-spin offer and rarely on matched-deposit offers.
The genuinely good offers are the exceptions to that pattern, and they are identifiable in one line: no wagering on free-spin winnings, paid as cash. Where an operator does this, the marketing headline is usually smaller — thirty spins rather than three hundred — and the value to you is larger. We have found that trade in this catalogue often enough to say it is a real segment rather than a marketing pose.
The other axis worth comparing is the date the terms were read. A bonus page without a date is a claim about an unspecified moment in the past; terms change quietly and often. Every offer we publish carries the date we read its terms, which is the only way to tell a current figure from a stale one.
If you want to see the comparison rather than take our word for the pattern, the bonus section lists each offer with its multiplier, its basis, its maximum bet, its cap and the date the terms were checked.
See the offers whose terms we have read →Sticky, non-sticky, and what happens to your own money
A detail that decides how trapped you are: whether the bonus is sticky. A sticky bonus can never be withdrawn — it funds play, and only the winnings above it become yours once the requirement is cleared. A non-sticky bonus is credited as withdrawable funds after wagering, so clearing it converts the whole amount.
Related, and more important in practice, is the order in which funds are spent. Some operators play the bonus balance first and ring-fence your deposit; others play your cash first, which means you can lose your own money before the bonus is touched — and if you then withdraw, the unspent bonus is forfeited along with any progress toward wagering.
The consequence people run into is this: withdrawing while a bonus is active almost always cancels the bonus and everything it produced. If you deposited £50, took a £50 bonus, and reached £120 with the requirement half cleared, withdrawing now typically leaves you with your own remaining cash and nothing else. The terms say so; the interface rarely warns you at the moment you click.
Before claiming, find two lines in the terms: whether the bonus is withdrawable after wagering, and which balance is spent first. If neither is stated, ask support and keep the answer.
When an operator can change or cancel an offer
Promotional terms in Britain sit under the same consumer-protection expectations as any other contract term, and the Commission has taken enforcement action over terms it considered unfair. That does not mean an operator cannot withdraw a promotion — it means the terms have to be transparent and applied consistently rather than invented after the fact.
Three clauses are worth reading with particular care. The first is the right to amend terms at any time, which is normal, but should not apply retroactively to an offer you have already claimed and started clearing. The second is a bonus-abuse clause, which is legitimate in principle and often written broadly enough to cover behaviour no reasonable person would recognise as abuse. The third is a right to request verification before paying out bonus winnings — reasonable, and a common cause of delay if you have not verified in advance.
If an operator voids a bonus and you believe the reason does not match the published terms, the escalation route is the operator's formal complaints process first, in writing, and then its alternative dispute resolution provider. An ADR decision can order the operator to pay; a chat transcript cannot.
Keep the promotional page as you saw it. A screenshot with a visible date is the single most useful thing you can have if the terms later read differently, and it costs nothing at the moment you claim.
A ninety-second check before you claim
- Find the basis. Bonus only, or deposit plus bonus? If it is the second, double your turnover estimate before going further.
- Find the multiplier and multiply. Write the turnover number down; it is the only figure that lets you compare offers.
- Find the maximum bet while the bonus is active. If it is lower than you would normally stake, you are committing to play differently, and one absent-minded larger spin can void everything.
- Find the cash-out cap. If winnings from the offer are capped at £50 or £100, treat the whole thing as an offer worth at most that much, regardless of the headline.
- Find the expiry, then divide the turnover by the days remaining. If clearing it requires more play per day than you would choose, the offer is asking you to change your behaviour, which is the point at which a discount stops being a discount.
- Check the game weighting for whatever you actually play. If your game contributes 10%, multiply the turnover by ten.
- Finally, ask whether you would have deposited without the offer. If the answer is no, the offer is not a discount — it is the reason for the transaction, which is exactly what it was designed to be.
Questions
What is the maximum stake on online slots in Britain?
£5 per game cycle for players aged 25 and over, in force since 9 April 2025, and £2 per game cycle for players aged 18 to 24, in force since 21 May 2025. The limits are statutory and apply at every British-licensed operator. A bonus term may impose a lower maximum bet on top of that.
Is "35× bonus" better than "35× deposit and bonus"?
Substantially. On a £50 deposit matched with a £50 bonus, the first requires £1,750 of turnover and the second requires £3,500 — the same headline for twice the work.
Does the game I play change what a bonus costs?
Yes, twice over. The house edge of the game decides what each pound of turnover costs you, and the game weighting decides how much of each pound counts toward the requirement. A game weighted at 10% multiplies your required turnover by ten.
Is 35× wagering good or bad?
It is the market standard, which is not the same as good. On a £20 bonus at 35× on bonus only, expect roughly £700 of turnover and about £28 of expected loss at 96% RTP. Whether that is acceptable depends on what you were going to stake anyway.
What does "no wagering" really mean?
That winnings from the offer are paid as cash you can withdraw immediately. Check two things anyway: whether a cash-out cap applies, and whether the spins themselves have a short expiry.
Can I lose winnings by betting too much per spin?
Yes, and it is the single most common way bonus winnings are voided. The maximum bet while a bonus is active is usually £5. Some sites block larger bets automatically; many do not, and simply void afterwards.