What existing-customer bookmaker offers are actually worth this year

Updated October 2026

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The sign-up offer is the headline that gets a new account open. The existing-customer offer is what decides whether the account survives the second month. Free bets, price boosts, acca insurance, daily reward shakers, weekend enhanced odds — these are what licensed bookmakers in Great Britain push once the welcome bonus has been claimed and forgotten, and they are where the real recurring value of an account tends to sit. The shape of every one of them changed on 19 January 2026, when the Gambling Commission’s new promotion rules took effect. This page works through what is left after that change, what each of ten licensed brands does well, and where the offers stop working for the punter who reads them at face value.

Data current as of 27 October 2026 and verified against the Gambling Commission’s public register.

Responsible gambling: the floor every offer sits on

Every promotion a UK-licensed operator runs sits on top of the same foundation, and that foundation is the stricter of the two under the new rules. The first change is a hard cap: wagering requirements on bonuses are limited to 10x. A £10 bonus that used to demand £500 of qualifying bets at 50x rollover is now unlawful; under the cap, the same bonus needs £100 of bets, and the operator carrying the larger number is breaking its licence conditions to do it. The second change closes a door that mixed-product promotions used to walk through: an offer that pulls a customer across product types — a sports bet unlocking free spins, a casino deposit unlocking a sports free bet — is banned outright. The Commission treats mixing as a pressure tactic, and the new rule bans the tactic, not the surrounding product.

The cap is narrower than readers sometimes assume. It bites on bonuses with a wagering condition. Whether it also applies to free bets with no rollover attached — the kind an operator simply credits after a qualifying bet — is not established in the rules themselves; the Commission’s published position is the wagering cap, and a free bet without a multiplier is a different animal from a bonus with a turnover target. Brand-by-brand, the existing-customer offers covered later in this guide sit somewhere on that spectrum, and the difference is the difference between an offer that takes hours of staking to clear and one that takes a single settled bet.

The third piece of the foundation is GAMSTOP. Since 31 March 2020, every online bookmaker with a Commission remote licence has had to sign up to the national self-exclusion scheme, and every brand reviewed on this page is a member. Self-exclusion periods run from six months to five years; after the minimum period, the exclusion stays in force for a further seven years unless the customer asks GAMSTOP to remove it. Online sites and apps are covered. High-street betting shops use a separate service. The point of the scheme is that one registration locks every GB-licensed account a customer holds, and a brand that quietly opens a fresh account for an excluded player risks its licence for the privilege.

Then there is the financial vulnerability check. Since 30 August 2024, a Commission licence condition has triggered a public-record check the moment a customer’s net deposits cross £150 in a rolling 30-day window — bankruptcy, county court judgments, the kinds of facts that are visible without asking the customer for payslips. The threshold is low on purpose. A second layer — the financial risk assessments that the press tends to call “affordability checks” — was announced in a Commission article of 7 July 2026, with a staged roll-out plan and no start date. The shape of those checks is therefore known; the date they begin is not, and this page writes them as announced, staged, and pending.

Two pieces of player-protection infrastructure are worth flagging for the punter who wants to read past the marketing. GamCare runs the National Gambling Helpline, free and confidential. The NHS runs specialist gambling clinics in several regions. GamCare, GambleAware and Gamblers Anonymous are independent of any operator and exist for the moment the offer stops being fun. None of these contacts are part of the offer itself; they are the backstop the offer is built over.

Bonuses and free bets: what an offer really takes to clear

A welcome bonus and an existing-customer offer are not the same animal, but the arithmetic that decides whether either is worth claiming is. Three numbers matter. The bonus amount. The wagering multiple, where one exists. And the minimum odds that qualify a bet toward the rollover. Expiry dates and stake-not-returned clauses do not change the maths; they change whether the maths gets done in time.

Read the offer as the operator writes it, and the wagering target is what stands out. Coral’s sports welcome offer — “Get £40 in Free Bets when you bet £20” — is the textbook case. The £40 is credited as free bets, not as cash; the £20 qualifying bet has to be at minimum odds of 2.0 (1/1); the free bets arrive within seven days and expire seven days after that. There is no wagering multiple on the free bets themselves, so the £10 bonus cap is not in play; what is in play is the stake-not-returned clause, which means a winning free bet pays the winnings only — £50 staked at 5.0 returns £200 in profit, not £250. Unibet runs the same headline structure (“Get £40 in Free Bets when you bet £20”) with the same 2.0 minimum odds and the same seven-day window. The two brands are not the same company. The mirror-image is the structural point: a free bet of £40 at 4.0 with the stake not returned has a calculated value of £30 — the bonus terms carry the calculation as “what the operator is putting down”, not as “what the punter pockets”. That gap is the price of admission to a no-wagering offer.

Then there are bonuses that do carry a wagering multiple, and the 10x cap is what makes them legible. A £10 bonus at the old 50x needed £500 of qualifying bets; at 10x it needs £100. Spreadex’s new-customer offer — £60 in free bets for a £10 fixed-odds bet — is wagering-free on the face of it, but the same logic applies whenever the operator stamps a turnover requirement onto any subsequent promotion. The number to look for is the multiplier. Below 10x, the offer is inside the new rules; above 10x, the operator is in breach, and a punter who takes the offer has no recourse against the Commission for breach — the rule protects the next customer, not the one mid-clear.

The third number — minimum odds — is the quietest of the three and the most likely to be misread. “Minimum odds of 1/2” on a qualifying bet does not mean the bet has to win; it means the price the bet is placed at has to be at least 1.50 in decimal terms. A £10 bet at 1.50 returns £15, of which £5 is profit, and only the £10 stake counts toward rollover. Coral’s qualifying bet has to be at 2.0 or above, which is a stricter filter: the bet has to clear a higher bar to qualify, and a punt at 1.7 does not. QuinnBet’s free bets, by contrast, can be used on any market at odds of 1/2 or greater, with maximum odds of 50/1; straight accumulators are allowed but the multiple bets Trixie, Patent and Yankee are not. Each operator writes its own filter; each filter changes the practical range of bets that count.

Mixed-product promotions deserve a paragraph of their own because they are the offer type the new rules have just removed. The Commission’s example is “bet on football to get free spins”, and the structure was common: a sportsbook welcome offer unlocking casino credits, a casino deposit unlocking a sports free bet. Under the new rules, that structure is unlawful at a GB-licensed operator. Two qualifications matter. The first is that the offer has to *require* the customer to engage with two product types — an opt-in that mentions a casino bonus as a side benefit without requiring a casino stake is a different beast, and whether a given promotion crosses the line depends on the operator’s small print. The second is that the offer has to be a *promotion*, not the operator’s standing offer: deposit methods, withdrawal times, acca boosts on a single product line — these are not promotional tie-ins and the ban does not catch them.

The offers that survive the rule change, and that this page rates, are the single-product ones: sports free bets, acca boosts, price boosts, free-to-play games, daily rewards. The arithmetic that decides their worth is the same arithmetic, with the wagering multiple truncated to 10x and the cross-product lever cut off. What remains is what the operator does on its own turf.

Top ten licensed UK bookmakers for existing-customer offers

The ten brands below all hold a Gambling Commission remote betting licence for Great Britain. Each one is in the Commission’s public register, which is what makes any of this possible: no offshore brand is featured, and any review that names a .com or .co.uk bookmaker without checking the register is one review the reader should discount. Several brands are operated by the same parent, and the offers are described from each operator’s own terms. The list is not a ranking by offer size — every brand runs a different mechanic, and what suits one punter does not suit another. What follows is what each brand does, written with the assumption that the punter already knows the new promotion rules and wants to see how each bookmaker works inside them.

The order of this list is the order in which research has assembled each brand; the operator write-ups that follow are grouped by offer type rather than by position in the table. The first cluster is the free-bet-led bookmakers, where the headline offer is “Bet X, Get Y in free bets”. The second cluster is the boost-and-insurance bookmakers, where the existing-customer offer is layered: price boosts on the daily card, acca insurance when a near-miss misses by one leg, daily free-to-play games alongside the welcome free bet. The third is the spread-betting and exchange names, which sit a category apart and reward a different kind of reader.

Coral — free daily Reward Shaker, Odds Booster, Football Super Series

Coral’s existing-customer offer is the densest of the ten. The headline Bet £20, Get £40 in Free Bets covers the welcome, but the existing-customer value sits in three recurring mechanics that the operator runs on every account. The Reward Shaker is free and daily, an opt-in that delivers a small prize each day — a free bet, a price boost, free spins — with the contents of the shake decided by Coral’s own engine. The Odds Booster covers hundreds of markets every day, lifting the price on selected football, horse racing and tennis lines above the standard card. Football Super Series is the free-to-play game, predicting match outcomes across a coupon for a £10,000 jackpot.

The trade-off sits in the payment and the qualification. Coral’s welcome offer has to be qualified with a debit card or instant bank transfer; credit cards are banned for gambling in Great Britain, as they have been since 14 April 2020, and the offer excludes e-wallets like PayPal from the qualifying deposit — the £40 in free bets will not credit on a PayPal top-up. Apple Pay, Visa, Visa Electron, Mastercard, Revolut Pay, Google Pay, TrueLayer, Earthport and Trustly cover the routes that do qualify. Each payment route has its own settlement time, and Coral’s bank-transfer withdrawals land faster than card ones, but neither route is what determines the value of the offer. What determines it is the consistency of the daily shake and the breadth of the Odds Booster card.

For the punter who logs in every day, Coral is the best of the ten at converting a settled account into a recurring small edge. For the punter who logs in once a fortnight for the Grand National, the daily mechanics yield nothing and the welcome offer is what the brand is offering.

Unibet — Bet Builder, daily Uniboosts, Best Odds Guaranteed, Cash Out

Unibet’s UK sportsbook has been live since 1999 — the company’s own claim, and a long enough track record to make the rest of the offer legible. The headline welcome is structurally identical to Coral’s: Get £40 in Free Bets when you bet £20, minimum odds of 2.0, seven-day expiry, debit card or instant bank transfer for qualification. The shape of the existing-customer offer is different. Unibet TV streams a long list of sports in-play, with Best Odds Guaranteed on UK and Irish horse racing and Cash Out on thousands of pre-match and live markets. The daily Uniboosts layer above the standard card.

The strengths are breadth and standing offers rather than one-off mechanics. The weaknesses are the same as Coral’s in a different form: there is no daily reward shaker and no free-to-play game with a cash jackpot. For the punter who wants to assemble a bet on a single football match — a Bet Builder combining shots, corners and player markets — Unibet’s existing-customer offer is more useful than Coral’s, because Cash Out on the leg-by-leg builder is what turns a five-leg acca into a usable tool. On Saturday-afternoon accumulator football, the Uniboosts card carries the day.

Sky Bet — three £10 free bet tokens after a 5p starter

Sky Bet’s welcome offer is structurally smaller and structurally cheaper to qualify for. Three £10 free bet tokens, credited after a deposit of at least £5 and a first single or each-way bet of at least 5p at odds of 1/1 (2.0) or greater. The 5p minimum stake is the lowest qualifying stake among the ten brands; the £5 minimum deposit is the lowest qualifying deposit. The trade-off is that the £30 of free bets is split into three separate tokens, so a winning free bet at any sensible price pays less than a Coral or Unibet single-shot £40 token would.

What Sky Bet does well is what its sister sites do well, and several of the existing-customer mechanics on the Sky Betting & Gaming platform — Sky Bingo, Sky Vegas, Sky Casino — share a back-end with the sportsbook. The sportsbook itself runs Sky Bet Club-style boosts and Super Boosts during the football calendar, and the operator’s app is the place the Super Boosts are pinned. Existing-customer value on the sportsbook comes mostly from the boost card, not from any shaker or game. For the punter who already has Sky TV and one Sky account across their entertainment services, the cross-product integration is the bonus; for the punter who just wants the sportsbook, the £30 of free bets is the offer.

BetTom — 50% back in two products, full terms apply

BetTom is the lone operator on this list whose welcome offer explicitly pairs a sports free bet with a casino credit, and the structure is exactly the one that the Commission’s new promotion rules have made unlawful at GB-licensed operators going forward. The offer is a 50% back as a free bet of up to £50 on the sports side, with a matching 50% back up to £50 as free slot funds for casino play, and “full terms apply” — which is the operator’s way of saying that the casino credit unlocks only after the sportsbook side has cleared and that the two tracks have to be cleared in parallel.

The fact that the offer is published under a GB licence and runs alongside the Commission’s rules does not mean the rules are silent on this structure; it means the rules are being read narrowly. The promotion that *requires* a customer to engage with two product types is the banned structure. The promotion that gives a customer a parallel choice without requiring engagement with both sides is a different beast, and BetTom’s offer sits in that grey area — the punter gets the sports free bet first and the slot funds come alongside, but the small print binds them. For the punter who plays both sides, it is one of the more generous combined offers on the market. A sports-only account gets little from it, because the slot-funds leg is a tax they pay in qualifying bets they will never make.

Dabble — Bet £10, Get £10 in Free Bets with a 7-day clock

Dabble’s welcome offer is the simplest on the page. Bet £10 on a first deposit, get £10 in free bets, with minimum odds applying, a 7-day free bet expiry and the stake not returned. The arithmetic is direct: a winning £10 free bet at 3.0 returns £20 in profit, not £30. The 7-day expiry is the same clock several other bookmakers use, and the stake-not-returned clause is standard for the free-bet format.

What Dabble has done commercially is build the brand around a social card. The platform’s defining feature is social — tipping-style cards that let users copy each other’s bets — and the betting mechanics are a layer on top. Existing-customer offers lean on the social graph: copy a tipster, follow a tipster, compete on a leaderboard. The free-bet mechanic on this page is the entry point, not the recurring offer, and the recurring offer is the social one. For the punter who bets on tips rather than markets, Dabble is the most natural fit of the ten brands. For the punt-formal punter who wants a Bet Builder with shots, corners and player markets on a single football game, Dabble is not built for that.

BoyleSports — Acca Insurance and Acca Loyalty, both 7-day clocks

BoyleSports’ sports welcome offer is the £20 in free bets from a £10 qualifying stake (£30 in free bets for Irish players staking €10). The existing-customer offer is layered in two parallel mechanics, and each one carries a 7-day clock on the free bet it returns. Acca Insurance refunds one leg of a losing accumulator as a free bet, with a maximum £20 refund, opt-in required, a £5 minimum stake, minimum odds of 1/2 and bets placed and settled on the same day. Acca Loyalty pays a free bet when a five-leg acca loses at combined odds of 3/1 or bigger, with a 7-day expiry on the refund.

The arithmetic runs the other way from a free-bet welcome. A free bet only matters when the qualifying bet loses or wins in a way that the operator credits something. BoyleSports’ structure is refund-shaped: the loyalty leg credit arrives on a losing bet, the insurance leg credit arrives on a near-miss, and the welcome free bet credit arrives on a qualifying bet at any result. The combined effect is a higher turnover per £10 staked than the simpler Bet £10 Get £10 brand, with the trade-off being that the refund tracks are narrower — minimum odds of 1/2, minimum combined odds of 3/1, same-day settlement — and a punt that misses both is a punt that costs the punter the time it took to place it.

For the punter who plays football accumulators on Saturdays, BoyleSports’ offer set is calibrated to that book. Singles and each-way horse racing leave the Acca Insurance leg as dead weight, and the welcome offer is the operative promotion.

Sporting Index — fixed-odds free bets plus spread-bet credits for football fans

Sporting Index runs both fixed-odds and spread betting under one licence, and the welcome offer crosses both products. A £10 fixed-odds bet at minimum odds of 1/2 (1.5) unlocks three £10 fixed-odds free bets, three £5 Total Goals spread bets, three £5 Winning Favourites spread bets and a £1 Race Index spread bet; the qualifying bet cannot be placed in-play or cashed out early. The spread-bet legs are the unusual feature: Total Goals is a fixed-goals spread, Winning Favourites is a goalscorer market with a twist, and Race Index is a horse-racing spread that pays on the runner’s finishing position.

The arithmetic on the spread-bet legs is structurally different from a fixed-odds free bet, because a spread bet wins or loses by how far the outcome overshoots the line. A £5 Total Goals spread on a total of 2.5 goals pays out £5 times the difference between actual goals and 2.5; a 4-1 result pays £7.50 per £5 stake, a 1-0 result loses the full £5. The free-bet mechanic on a spread bet is the winnings only — the stake is not returned on a win, and the stake is lost on a defeat. For the punter who already places spread bets on football, the offer is a free spread-trading float; for the punter who has never placed a spread bet, the offer is a way to lose £5 of free credit quickly.

For the experienced spread bettor, Sporting Index is the only one of the ten that does both jobs under one licence. For the fixed-odds-only punter, the three £10 fixed-odds tokens are the operative offer and the spread-bet legs are non-transferable.

Copybet — Acca Booster and Daily Profit Boost

Copybet’s existing-customer offer is the simplest acca mechanic on the page. The Acca Booster pays up to a 100% cash bonus on accumulators of at least 3 selections; the Daily Profit Boost pays up to 15% on top of any settled bet. The “up to” wording matters — every acca and every daily bet is on a sliding scale, and the boost depends on the number of legs and the stake; a 3-leg acca pays a lower boost than a 10-leg acca.

The platform’s underlying mechanic is copy-trading — following other users’ bets the way the name suggests — and the boost structure is calibrated to that book. A punter who builds their own acca from the markets and brings it to Copybet pays the same boost as a punter who copies another user’s acca from the leaderboard. The arbitration between a high-boost leg and a low-boost stake is what decides the offer’s real value: a 10-leg acca at £10 wins a 100% boost and doubles the winnings; a 3-leg acca at £50 wins a 30% boost, which is a more modest percentage on a much larger base.

For the punter who assembles multi-leg football accas from the daily card, Copybet’s boost is the highest flat-percentage boost on the page. Singles and each-way horse racing fall outside the boost structure entirely.

QuinnBet — 7-day free bets, no Trixie but yes to accas

QuinnBet’s free-bet tokens are valid for 7 days from credit and can be used on any market at odds of 1/2 (1.5) or greater, with maximum odds of 50/1; straight accumulators are allowed but Trixies, Patents and Yankees are not. The exclusion of multi-line multiples is unusual — most GB bookmakers allow them, and the few that exclude them tend to do so on the wagering condition rather than on the free bet itself. QuinnBet’s choice is a reader-facing one: the operator wants accas on its platform rather than combination bets, and the free-bet mechanism is the lever.

The 50/1 ceiling is the second lever. A winning free bet at 49/1 returns £49 in profit per £1; a winning free bet at 51/1 (which would be the next price step up) returns £0 because the bet does not qualify under the maximum-odds rule. The ceiling is wide enough that most accas land beneath it; the ceiling is narrow enough that a long-odds single cannot be placed with free credit. Combined, these are exactly the conditions an operator wants on a free bet: the punter is steered toward the markets the operator wants priced, and the operator’s margin on those markets is the floor.

Smarkets / SBK — exchange and sportsbook under one roof

Smarkets runs a betting exchange, and SBK is the sportsbook wrapper around the same trading engine. SBK’s UK welcome offer is a £20 first deposit and £20 bet at minimum odds of 3.0 for £60 in free bets within 48 hours, with Cash Out, Bet Builder and live horse racing streams. The exchange runs on commission rather than margin and offers the back-and-lay structure that fixes odds across a market; the sportsbook runs on margin and offers the standard bookmaker price.

The existing-customer offer on the SBK sportsbook side is the standard boost card. The exchange side runs commission-based promotions separately, with rate discounts and refund offers for high-volume accounts. For the punter who plays the exchange, the marketing offer is a back door into the sportsbook; for the punter who only plays the sportsbook, SBK is one of the newer brands on the list and does not have the dense standing-offer catalogue that Coral or Unibet has built over twenty years.

Spreadex, Kalooki and the rest — niche strengths

The remaining brands carry the rest of the existing-customer offer across the ten. Spreadex runs fixed-odds and spread-betting under one licence, with a £60 free-bet welcome offer for a £10 fixed-odds qualifying bet, Spreadex’s Acca Boosts adding a 5%-100% cash boost on football accumulators of three or more selections, and a free-bet window that requires the qualifying stake to be placed within 28 days of opening the account. Spread-betting losses can exceed the deposit, and the Spreadex homepage sits inside the FCA’s regime for the spread leg and the Commission’s for the fixed-odds leg — a single account has two regulators and two rule sets.

Kalooki Sportsbook is the smallest of the ten by brand recognition, but the homepage claims instant withdrawals by bank transfer within minutes, Best Odds Guaranteed on UK and Irish horse racing, in-play betting, daily boosts and extra place races. The licence holder is Kalooki Sportsbook Limited (company number 12938274), Commission account 57730, and the site is GAMSTOP-registered.

10bet runs a 100% up to £50 betting bonus for UK sign-ups, plus daily free bets and free spins on the casino side — a structure that sits alongside BetTom’s parallel-product welcome and reads under the new rules the same way.

Kwiff offers a Supercharge feature that can instantly boost the odds on a bet from 2/1 to 20/1, applied to singles or multi bets on any sport, plus a guaranteed weekend acca boost and Bet Builder products that span multiple games. The brand sits a little outside the ten reviewed above but carries the most active marketing programme on the sportsbook side.

BetVictor runs regular price boosts, acca offers and free bets on selected events, with welcome offers visible in the app and the operator’s customer terms applying throughout.

bet365 offers Bet Builder+ (combining markets from one event into a single bet, pre-match and in-play), Super Boosts, Winnings Boosts on Bet Builders and selected singles, and daily Bet Boosts. Like William Hill’s Football Acca Boost, bet365’s catalogue is the reference standard for the segment.

William Hill’s Football Acca Boost is the standalone offer worth flagging: accas of 2 or more legs with each selection at 1/5 or bigger carry a boost from 3% on a double up to 200% on 20 or more legs, with a maximum boost of £10,000 per online bet. The promotion runs until 30 May 2027.

Star Sports offers pre-event and in-play markets with Bet Boosts, Daily Specials, Weekend Enhanced Boosts, and in-play betting on football, horse racing, golf and US sports — a broader catalogue than its high-street origin suggests.

DAZN Bet offers Cash Out, Bet Builder, daily bet boosts and in-play betting, with deposit limits, loss limits and wagering limits as safer-gambling tools. Cash Out availability is not guaranteed — bets stand if it is unavailable.

The columns of a comparison table cannot capture what these brands are. The text above carries what the cells cannot: the trade-off between a welcome that’s easy to qualify and a free bet that wins on a long price; the trade-off between a daily reward shaker and a one-off acca boost; the trade-off between a brand with a 25-year track record and a brand whose standing offers are still being built.

Overview: how the existing-customer market fits together

The British licensed bookmaking market for sporting events is large, regulated, and structurally older than most of its customers. The Gambling Commission licenses hundreds of remote operators for general betting on real events, and a smaller number for virtual events, pool betting and betting intermediaries. The Commission account number on the public register is the only test that matters when a punter is checking whether a brand is licensed; the domain tells the punter nothing, because licensed operators use .com as well as .co.uk, and unlicensed operators use whatever domain they like. Every brand in the ranking above holds a Commission account. No unlicensed brand is featured.

The financial spread-betting layer sits underneath this list and overlaps with it. Spreadex and Sporting Index both run fixed-odds and spread-betting under their respective licences; the fixed-odds side is regulated by the Gambling Commission, the spread-betting side is regulated by the Financial Conduct Authority when the underlying markets are financial (forex, indices, commodities) or by the Commission as a betting product when the underlying markets are sporting outcomes. The same brand can carry two regulators, two rule sets and two customer accounts, and the rules on what a customer can lose differ across the two. Spread betting losses can exceed the deposit — a feature of the spread-bet product rather than a marketing promise. The fixed-odds side carries a stake-not-returned clause on its free bets, the spread-bet side carries a similar clause on its spread-bet credits, and the leverage structure on the spread side is what differentiates the two products in practice.

Bonus economics. The Commission’s new promotion rules have not changed the size of the offers; they have changed the cost of clearing them. The 10x cap on wagering requirements is the floor; below it, offers with no wagering condition (most free-bet welcome offers) sit outside the cap and continue to operate. Above it, no offer can lawfully run at a GB-licensed operator. The mixed-product ban takes a wider set of offers off the menu — anything that requires a customer to engage with two product types — and the ban is structural rather than punitive. What is left is the offer set reviewed above: single-product free bets, single-product acca boosts, single-product price boosts, single-product loyalty mechanics.

Geographically, the offer is British. Northern Ireland is outside the Gambling Act 2005 and operates under older legislation; a licence the Commission has issued for Great Britain does not automatically cover Northern Ireland, and a GB-licensed operator may not accept bets from customers in Northern Ireland without a separate notification. The rule is rarely visible to the punter because the operator’s registration flow covers it, but it is the geographic line the Act draws, and it is what “Great Britain licence” means on the operator’s small print.

Currency and tax are two pieces of the picture the punter does not usually see. Betting winnings in Great Britain are not taxed at the customer level — that is the headline, and the headline is correct. The tax is on the operator: General Betting Duty is currently 15% on gross profits (i.e., stakes minus winnings paid out), and from 1 April 2027 a new remote betting rate of 25% applies within it, while remote bets on UK horse racing, bets on self-self-service betting terminals in licensed premises, pool betting and in-person betting stay at 15%. The change is on the operator side, not the punter side, and whether operators pass duty on through odds is not established — the Commission does not publish that data and the operators do not disclose it. Until 1 April 2027 the remote rate stays at 15%. Spread betting has its own rates — 3% financial, 10% other — and the rates sit alongside General Betting Duty rather than inside it.

Regulation: what the Commission’s 2026 rules actually do

The promotion rules in force since 19 January 2026 do three things, and they do them on the operator’s licence. They cap wagering requirements on bonuses at 10x. They ban mixed-product promotions. They do not, as of the date of writing, change the maximum amount of a bonus or the maximum value of a free bet. Those caps do not appear in the published rules; whether they will appear is a separate question.

A £10 bonus at the old 50x needed £500 of qualifying bets. At 10x, it needs £100. The arithmetic is what makes the cap legible: a punter clearing £100 of qualifying bets at a margin of, say, 5% loses £5 on average. A punter clearing £500 at the same margin loses £25. The cap is the difference between a real cost and a punitive one, and the difference is £20 in expected value. For a punter who would have cleared the bonus anyway, the cap is a saving. For a punter who would have walked away before clearing it, the cap is irrelevant — the offer is already pricing itself out of that market.

The mixed-product ban is harder to read. The Commission’s example is “bet on football to get free spins”, and the structure was common in welcome offers throughout 2023 and 2024. The ban closes the structure entirely — the offer that *requires* gambling on two product types is unlawful. The offer that runs two parallel tracks without requiring both is not, and the small print is what determines the difference. BetTom’s 50% sports free bet with a 50% casino credit, with full terms applying, sits in this grey zone. A punter taking that offer has to read the terms to see whether the casino credit is a side benefit or a requirement.

The third thing the rules do is administrative. The Commission can take enforcement action against an operator that breaches them, and the breach can cost the operator its licence; the breach does not invalidate the offer retroactively, and a punter who has accepted an offer with a 11x or 12x wagering multiple has no automatic recourse against the Commission. The recourse is against the operator under the operator’s own small print, which usually grants a withdrawal right in the event of a contractual dispute. The Commission’s enforcement track is a separate stream, and the punter sees it only in the longer arc of operator behaviours.

The rules do not stop the changes coming. The Commission’s article of 7 July 2026 announces staged financial risk assessments — the affordability checks the press has been writing about for years — with no start date, and the rules around maximum stake limits, maximum bonus amounts and maximum free-bet values have not been published. The cap on wagering multiple is the only quantity the rules pin down, and the only quantity the rules nail down is the 10x figure.

The wagering cap in practice

The offer terms research has assembled for the welcome leg of the brands above (the Coral and Unibet £40 free bet for a £20 qualifying stake, the Sky Bet £30 free bet for a 5p starter, the BetTom 50% up to £50 on the sports side, the Spreadex £60 free bet for a £10 fixed-odds bet) carry no wagering multiple. They are free-bet credits, not bonus credits, and the 10x cap does not bite on credits that the operator issues without a turnover requirement.

For the punter who has accepted an offer that *does* carry a wagering condition — and the new rules make sure that the multiplier is 10x or less at any GB-licensed operator — the arithmetic runs as follows. Take a £10 bonus at 10x. The required turnover is £100. Spread across £10 single bets at minimum odds of 1.5 (1/2), that is ten settled bets at £10 each, with the qualifying stake not returned when a bet wins. At a margin of 5% on a 1.5-or-bigger market, the expected cost of clearing the offer is £5 — the £100 turnover multiplied by the 5% margin. That is the cost in expected terms; the range runs from zero (if the punter wins every bet and the margin is reversed by the price) to £50 (if the punter loses the full £100 and walks away with the bonus plus a £50 net loss). The expected value is £5, and the offer’s value to the punter is the £10 bonus less the £5 expected cost.

The same arithmetic applies to any bonus with a turnover multiple of x, where x is 10 or less. With y qualifying bets at the minimum odds, each at £10, the required turnover is xy, the expected cost is the turnover multiplied by the margin, and the offer’s value is the bonus less the expected cost. The cap does not change the structure; it changes the relationship between bonus amount and turnover. Below 10x, the offer is legally offered; above 10x, it is breach.

The bettor’s reading. The bookmaker’s margin sits inside every price, and the margin is the cost of clearing any rollover. The Commission caps the multiple; the operator prices the market. The punter’s edge is the gap between the operator’s margin and the punter’s price-overround on the markets they understand. For a punter who picks their own lines — singles at a price they have a view on, accumulators they have constructed — the offer is a chance to lock in a bonus and pay the going rate for the right to keep it. For a punter who accepts the offer and clears it by hitting the bonus button on football accumulators, the offer is a chance to give the operator the margin on a market the operator has already priced.

The offer is a band, not a figure. The £5 expected cost above is the midpoint. Real clearing runs between zero (a punter who wins enough to recover the margin) and £50 (a punter who loses the whole £100 and walks away without clearing). The offer is worth claiming when the punter’s own edge on the qualifying markets covers the clearing cost; it is not worth claiming when the punter’s edge is negative — which it usually is, because the offer was calibrated to attract a customer rather than to make one.

Frequently asked questions

What is the maximum wagering requirement on a betting bonus in Great Britain?

Since 19 January 2026, the Gambling Commission’s promotion rules cap wagering requirements on bonuses at 10x. A £10 bonus that required £500 of qualifying bets under a 50x rollover is unlawful; at 10x the same bonus needs £100 of qualifying bets. The cap applies to bonuses with a wagering condition, not to free bets with no rollover attached, and a free-bet welcome offer without a turnover target is outside the cap. The Commission can take licence-action against an operator that breaches the rule.

What do minimum odds and the wagering requirement mean in a sign-up offer?

The wagering requirement is the multiple of the bonus that has to be staked in qualifying bets before any winnings become withdrawable; under the Commission’s 10x cap a £10 bonus needs £100 of qualifying bets. Minimum odds are the lowest price at which a qualifying bet can be placed — Coral’s 2.0 (1/1) or Unibet’s 2.0 for example — and a bet placed below the minimum does not count toward the rollover. Bets above the minimum count in full, and the punter’s edge on the qualifying market is what determines whether the offer is worth clearing.

Why is the stake of a free bet not paid back with the winnings?

A free bet is a credit the operator gives for the chance to win a profit, and the credit (the stake) belongs to the operator in the event of a win; only the profit is paid to the punter. A £10 free bet at 5.0 returns £40 in profit, not £50, because the £10 stake is not returned. The same mechanic on a regular bet does return the stake, which is what differentiates the two products. Operators describe the stake-not-returned clause in the small print, and a punter claiming a free bet without reading it is the most common booking error on the licensed market.

Can a bet on sport be tied to a casino bonus under the Commission’s promotion rules?

No. Since 19 January 2026 mixed-product promotions — offers that require a customer to engage with two or more product types such as betting, casino, bingo and lottery — have been banned. An offer that pays a sports free bet with a parallel casino credit, where the customer can take one without the other, sits in a grey zone and the operator’s small print decides whether the structure is compliant. The Commission’s clear example is “bet on football to get free spins”, and the ban catches any structure that requires the customer to take both tracks.

How can it be checked that a bookmaker holds a Gambling Commission licence?

The Commission’s public register can be searched by business name, trading name, domain or account number, and the register is the entire test of whether a brand holds a licence. A GB-licensed operator uses .com as well as .co.uk, so the domain alone proves nothing; only the register entry does. A brand with a Commission account number on its site (Coral’s 054743-R-330863-014, Sky Bet’s 067370-R-341330-005, and so on) can be verified against the register by account number, and the register entry will name the licence holder, the licence categories and the registered trading names. Every brand reviewed on this page holds a Commission account; the register is the supporting document.

Are betting winnings taxed in Great Britain, and who pays General Betting Duty?

Betting winnings are not taxed at the customer level in Great Britain. General Betting Duty is the operator’s tax on gross profits (stakes minus winnings paid out), currently 15% on remote bets, and from 1 April 2027 a separate remote betting rate of 25% applies within it while UK horse racing, self-service betting terminals in licensed premises, pool betting and in-person betting stay at 15%. Spread betting has its own rates — 3% on financial, 10% on other. Until 1 April 2027 the remote rate stays at 15%. The Commission’s statutory levy is a separate charge on the operator, not a tax on the punter.

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