What a Free Bet Sign Up Offer Actually Costs You in 2026

Updated October 2026

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A bookmaker’s welcome offer is the cheapest sentence on its homepage and the most expensive paragraph of its terms. The phrase “free bet” sits where the eye goes first; the conditions sit two scrolls down, in the place nobody reads until the winnings are pinned to a bonus balance they cannot withdraw. This guide opens the terms first, runs the arithmetic on the offer you think you have claimed, and lines ten UK-licensed bookmakers side by side on what each one actually gives back for a pound staked.

The comparison below was built around a single question: what does a sign-up offer cost the reader? Not the headline price — the cumulative cost of qualifying for the free bet, the wagering requirement attached to it, the minimum odds the qualifying bet must clear, the expiry on the credit, and the small print that says whether the stake comes back with the win. Each UK-licensed bookmaker in the table below is reviewed on those same four lines. The verdict at the end of each block is the page’s own judgement, not the operator’s.

The data was checked against the Gambling Commission’s public licence register and each operator’s published terms on 26 October 2026.

The Shape Of A UK Sign-Up Offer In 2026

A sign-up offer in Great Britain is what a licensed bookmaker pays a new customer to open an account and place a first bet. The shape is almost always a free bet credit, not a cash bonus, and the difference matters more than the name suggests. A cash bonus is money the bookmaker credits to the withdrawable balance and which the customer can take out once any wagering requirement is met. A free bet is a stake the bookmaker credits for placing a bet; if the bet wins, the customer takes the profit, and the stake is not returned. That distinction is what makes the headline £40 in free bets worth less than £40 in cash, sometimes markedly less, and the section on free-bet value below puts a number on it.

Two structural rules govern every offer that follows. First, every operator in this comparison holds a remote operating licence from the Gambling Commission for Great Britain, the body that licenses the whole commercial market under the Gambling Act 2005. Second, since 19 January 2026 the Commission’s promotion rules cap wagering requirements on bonuses at 10x and ban mixed-product promotions — an offer that requires a customer to gamble on two or more product types, such as betting plus casino, from a single opt-in. The cap on the money value of a bonus is not established by the rules; what is established is that an offer asking the customer to clear, say, a £20 bonus 50 times over is no longer a permitted offer for a GB-licensed operator. What is also open is whether the 10x cap applies to free bets with no wagering condition; the Commission has not settled that point publicly. That uncertainty is the reason a careful reader treats any “no wagering” line on a free bet as a marketing word first and a rule second, and reads the rest of the terms to see what the bookmaker has actually committed to.

The wagering cap changes the character of the market. A £10 bonus at 50x wagering used to mean £500 of bets before the customer could withdraw; under the cap, no more than £100 of qualifying wagering is allowed on a £10 bonus, and many of the brands below sit well below the ceiling. The cap is a floor on common sense, not a guarantee of generosity, and the rest of this page exists to show where each operator sits on the floor and what is left of the offer once the terms are read.

The headline number is also not the offer. A book that advertises “Bet £10, Get £40 in Free Bets” is offering £40 in stake credits, not £40 in cash, and the customer must place £10 of their own money at minimum odds that vary by brand before any credit is issued. Some offers refund the stake as a free bet only on a losing first bet; some credit free bets on settlement of a winning first bet; some split the credit into several tokens that expire on different days or can only be used on specific market types. The headline number says how big the credit is; the small print says whether the customer can ever pocket it.

What The Promotion Rules Changed On 19 January 2026

The Commission’s promotion rules, in force since 19 January 2026, do two things. They cap wagering requirements on bonuses at 10x, and they ban mixed-product promotions. The cap is per bonus, not per customer: a bookmaker that wants to give a new customer a £10 bonus may not ask for more than £100 of qualifying wagering on it, regardless of how many times the customer has signed up before. The ban on mixed-product promotions closes a route that operators used to take with welcome packages — a free bet tied to a casino bonus, or vice versa, in one opt-in. The two restrictions together compress welcome offers toward smaller bonus values and shorter clearing schedules, and push operators toward free-bet credits that have no wagering requirement at all.

What the rules do not settle is just as important. They do not cap the money value of a bonus. They do not cap the size of a free bet credit. They do not cap the minimum odds on a qualifying bet. They do not cap the expiry on a free bet. They do not require the stake of a free bet to be returned with the winnings. And they do not settle whether a free bet with no wagering condition is even a “bonus” for the purposes of the cap. The result is that the headline price of a welcome offer is still wide open, and the cost of clearing it is the only figure that matters.

The mixed-product ban is the one change a reader notices immediately. A welcome package that asks a customer to opt in once and then place sports bets to unlock casino spins is no longer a permitted offer; the same free bet can still be issued, but the casino spins cannot be tied to it. Several operators in this comparison used to run exactly that kind of package. Their welcome pages now show the sportsbook offer on its own and the casino offer separately, and the customer’s opt-in is also separate. That is a substantive improvement for a reader who never intended to play casino: the offer no longer asks them to.

Responsible Gambling: The Conditions The Offer Comes With

A GB-licensed bookmaker is required to verify a customer’s name, address and date of birth before the customer can deposit or gamble, including when the first use of the account is to claim a free bet. The check runs against public records and against credit-reference data, and it has been mandatory for online operators since 7 May 2019. A welcome offer in 2026 is therefore not anonymous: the customer uploads a document, the bookmaker checks it, and only then does the bonus credit. The bonus is not a way to test a site without showing ID; the ID is the price of admission to the bonus.

Three other conditions govern how the bonus is used. GAMSTOP is the national multi-operator online self-exclusion scheme and is a mandatory licence condition for every online operator since 31 March 2020. A customer who has self-excluded cannot open a new account at any GB-licensed online bookmaker while the exclusion is in force; the welcome offer is unavailable to them by design, and that is the point. The financial vulnerability check, in force since 30 August 2024, applies when a customer’s deposits minus withdrawals exceed £150 in a rolling 30 days; the £150 threshold took effect on 28 February 2025. The check is a public-record check, not an income check and not a credit-reference check. Financial risk assessments — the “affordability checks” of the press — were announced in a staged plan on 7 July 2026, with no start date, and remain announced, not in force. The Commission’s technical standard on deposit limits (RTS 12) has been rolling out in phases: the first changes applied from 31 October 2025 and a second phase was postponed to 30 September 2026; whether that second phase is live is not established, so a careful reader checks the bookmaker’s own safer-gambling page rather than assuming the limit is in place.

The betting tax in Great Britain is the operator’s tax, not the player’s. General Betting Duty is 15% on the operator’s gross profits from betting; from 1 April 2027 a remote betting rate of 25% will apply within it, while remote bets on UK horse racing, self-service betting terminal bets in licensed premises, pool betting and in-person betting stay at 15%. Until 1 April 2027 the remote rate remains 15%, and whether operators pass duty on through odds is not established. The player pays no tax on betting winnings in Great Britain; a professional gambler is a separate case and should ask HMRC or an adviser.

Help when gambling stops being fun is free and runs through GamCare (the National Gambling Helpline), GambleAware, the NHS gambling clinics network, and Gamblers Anonymous. A bookmaker that takes a sign-up offer seriously also takes a self-exclusion request seriously; a customer who asks GAMSTOP to exclude them from online betting is excluded from every operator in this comparison by the same single registration.

Bonuses And Free Bets: The Vocabulary, And What Each Word Costs

A welcome offer in this market uses a small set of words, and each one carries a cost that is not on the label. The labels below are what the operators call them; the cost in brackets is what research established about each one across the ten brands in the comparison.

A matched free bet is the commonest label. The bookmaker matches a percentage of the customer’s first bet, up to a cap, in free-bet credit. The cap is on the credit, not the stake. A £10 first bet at minimum odds of 1/2 (1.50 decimal) that triggers a 100% matched free bet up to £25 pays up to £25 in free-bet credit, not £25 in cash. The free bet has its own terms: a minimum odds on the bet the free bet is used on, a list of permitted market types, an expiry, and the small print that says the stake is not returned with the winnings.

A bet-and-get is the second commonest. The customer places a first bet of a stated size, often £10 or £20, at minimum odds that vary by brand, and receives free-bet credit of a stated value, often £20, £30 or £40. The credit is issued on settlement of the qualifying bet. Several operators split the credit into several tokens with different expiry windows or different market restrictions. The credit is not withdrawable until it has been used on a permitted bet at minimum odds; even a winning bet returns only the profit, not the stake, because the stake was the free-bet credit.

A stake-back free bet is the third shape, commonest on accumulator products. The customer places a qualifying first bet that loses, and the bookmaker refunds the stake as a free bet, up to a cap. The credit is conditional on a loss, not a win; on a win the customer takes the profit and the offer is consumed. Hollywoodbets’ welcome offer is a stake-back free bet: a £10+ accumulator with three or more legs at minimum odds of 4/1 (5.0), settled within seven days, refunds the stake as a free bet of up to £30 on a first qualifying losing bet. A customer who wins the first acca does not get the free bet. The offer is a hedge against losing the first bet, not a bonus for winning it.

A deposit bonus is the fourth shape and the one the wagering cap most directly targets. The customer deposits a stated amount and receives a cash bonus of a stated percentage, with a wagering requirement attached. A 100% deposit bonus up to £50 with 10x wagering means a £50 deposit returns a £50 bonus that must be wagered 10 times — £500 of qualifying bets — before the bonus and any winnings are withdrawable. The 10x cap is the maximum: a brand offering 5x wagering is offering a lighter requirement, not less of a bonus. A brand offering “no wagering” on a deposit bonus is offering a different product: a bonus the customer can withdraw as cash once any minimum-odds condition is cleared.

A free-bet cluster is a bundle of smaller free bets on different market types. BetGoodwin’s welcome offer is a £15 free-bet cluster made up of a £5 sports bet, a £5 acca and a £5 Sub-Cover bet; the £15 headline is paid across three tokens, each usable on its own market type. The shape is a way of giving the customer a larger headline number while keeping each token’s risk small.

A boosted-odds offer is a one-off enhancement on a stated selection, settling at the boosted price if the bet wins. The stake is the customer’s own money; the offer is a higher price on a single bet. The Commission’s promotion rules do not cap the size of a price boost, only the wagering on a bonus.

A risk-free bet is the label the customer sees and the label the small print retracts. A risk-free bet is a stake-back free bet, refunding the stake as a free-bet credit if the first bet loses; the stake is not returned in cash. A bookmaker that calls its offer “risk-free” is selling a stake-back, not a refund, and the difference is what the credit is paid in.

The ten brands below use these shapes in different mixes. The next section is the headline comparison, then the individual reviews.

The Comparison Table: Ten UK-Licensed Bookmakers And What Their Welcome Offers Actually Give Back

The table below lines the ten operators side by side on the points a careful reader checks first: the brand, the Gambling Commission remote licence number and the licence holder behind it, and what the operator’s own terms state on the key’s subject. The columns are the matters of comparison; the cells carry what research established for that brand and that licence.

The headline numbers read like a small auction — £60 here, £40 there, a stake-back of up to £30 — but the headline is the part of the offer the bookmaker wants the reader to see. The cost sits in the columns that follow: minimum odds, expiry, the wagering multiple on the credit, the market types the credit can be used on, and whether the stake comes back with the winnings. Two operators in the comparison sit on opposite ends of those columns. Betway’s £40 in free bets carries 1x wagering at 1.75 and a seven-day expiry, which is heavy: the customer must win once before any credit is withdrawable. Smarkets’ £60 in free bets requires a £20 first bet at 3.0 and arrives within 48 hours, which is generous on the credit and tight on the qualifying bet. Coral’s £40 in free bets requires a £20 first bet at 2.0 with a seven-day expiry, which sits in between. The cost is the qualifying bet plus the clearing conditions, and the table carries each of those lines through the reviews.

Two operators — Swifty Sports and Geoff Banks — have no welcome offer documented in research. They sit on the table because they hold a Gambling Commission remote licence and the comparison is of licensed operators, not of welcome offers. A reader who opens an account with one of them to claim a sign-up bonus will not find one to claim; a reader who opens one for the in-play product or the ante-post pricing will find the licence and the product in place. Both reviews below name this gap plainly.

The Reviews: Each Brand On Its Own Terms

Each review below covers what the welcome offer costs the customer and what the customer gets in return for that cost. The verdicts answer a different question in each block; a brand with a tight expiry on a large free bet is judged on the expiry, a brand with a heavy wagering multiple is judged on the clearing schedule, and a brand with no welcome offer is judged on whether the rest of the product is worth opening an account for at all.

Swifty Sports

Swifty Sports holds a Gambling Commission remote licence for general betting on real events under account 58957, with Swifty Global (UK) Ltd as the licence holder. Research documented no welcome offer on the operator’s published terms; the operator’s app listing advertises Best Odds Guaranteed, Cash Out on markets including horse racing and football, daily price boosts, live streaming and in-play betting, with Bet Builder listed as coming soon. The product is built for in-play and for racing punters who care about BOG on horse racing.

The verdict is that this is a brand a reader opens an account with for the racing product, not for a welcome bonus. The licence is in place, the in-play offer is documented and the Best Odds Guaranteed concession is the kind of feature a regular racing punter notices on the second meeting they bet on, not on the first. A reader whose only reason to open a Swifty account is a sign-up offer will not find one to claim, and the account-opening work — the document upload, the verification check — costs the same whether the welcome offer is on the page or not. That trade is the one a careful reader makes before the ID is uploaded.

BetGoodwin

BetGoodwin holds a Gambling Commission remote licence under account 2927, with Goodwin Racing Limited as the licence holder. The welcome offer is “Bet £10 & Get £15 in Free Bets”, split into three tokens: a £5 sports bet, a £5 acca and a £5 Sub-Cover bet. The split is the shape of the offer; the £15 headline is paid across three free bets, each on a different market type. Research did not document a wagering multiple on the credit, a minimum-odds floor on each token, or a credit expiry; the small print on the operator’s own welcome page is the place those numbers live, and they are the numbers a careful reader checks before placing the qualifying bet.

The verdict is that the headline is small, the split is a way of making £15 feel like three offers, and the cost of the qualifying bet sits in the small print. A £10 first bet at minimum odds of around 1/2 is a routine qualifying condition; the three-token credit lets the customer try a single bet, an accumulator and a Sub-Cover bet on the credit, which spreads the offer across market types the customer might not otherwise use. The licence is in place. The reader who opens a BetGoodwin account for the welcome offer is opening an account for a £15 free-bet cluster paid in three tokens, and the return on the £10 qualifying bet is the value of those three tokens after their own terms are read.

Betboro

Betboro holds a Gambling Commission remote licence under account 44181, with Webmedia Development N.V. as the licence holder. The sports welcome offer is a 100% matched free bet up to £25 on the first qualifying wager, requiring a debit card deposit of at least £10 and a first bet of £5 to £25 with at least three selections each at 3/5 (1.60) or higher. The “three or more selections at 3/5” is the cost of the offer: the qualifying bet is a treble, not a single. A customer who wants to claim the offer must place a £5–£25 treble at minimum odds of 3/5 per leg, and the free bet is a 100% match of that stake up to £25.

The verdict is that the headline matches the deposit ceiling, but the qualifying bet is the real cost. A £10 treble at 3/5 per leg carries an implied combined price and a combined probability that is materially worse than the price on a single at the same minimum-odds floor. The free bet itself returns the profit only and not the stake. A reader who reads “100% matched free bet up to £25” without reading the treble condition has misread the offer. The licence is in place: see above for our policy on licensed operators. This operator provides a free bet of up to £25 in exchange for a £5–£25 treble, and we judge this deal by comparing the free bet to the cost of clearing a 3/5 treble.

Coral

Coral holds a Gambling Commission remote licence under account 54743, with LC International Limited as the licence holder, covering both remote general betting on real events and remote betting intermediary. The sports welcome offer is “Get £40 in Free Bets when you bet £20”: a deposit and sports bet of £20 or more at minimum odds of 2.0 (1/1), with £40 in free bets issued within seven days and expiring seven days after issue, for new GB customers who opt in and deposit by debit card or instant bank transfer. The offer sits inside a wider product that includes a free daily Reward Shaker, an Odds Booster on hundreds of markets and free-to-play games such as Football Super Series with a £10,000 jackpot. Coral’s payment options include Apple Pay, Visa, Visa Electron, Mastercard, Revolut Pay, Google Pay, TrueLayer, Earthport and Trustly.

The verdict is that the headline is one of the larger bet-and-get offers in the comparison, and the qualifying condition is on the heavier side. A £20 first bet at minimum odds of 2.0 is a routine condition for a £40 reader; the £40 credit is split into several tokens with a seven-day expiry, and the customer has a window after the qualifying bet settles to use them. The wider product — the Reward Shaker, the Odds Booster, the Football Super Series jackpot — is the part of Coral the welcome offer sells, and a reader who values a daily free game is reading a different offer than a reader who values a single credit. The operator is UK-licensed. This £40 free-bet bundle expires in seven days and requires a £20 first bet at 1/1, and the value splits into four or five tokens, weighted by the market restrictions on each.

Geoff Banks

Geoff Banks holds a Gambling Commission remote licence under account 54095, with GB Sports Advisors Limited as the licence holder. Research documented no welcome offer on the operator’s published terms; the app publishes live in-play prices and ante-post prices on future events. The product is a thin one: an app from a small operator focused on in-play pricing and ante-post markets, with the Gambling Commission licence behind it and GAMSTOP membership in place.

The verdict is that this is a brand a reader opens an account with for the ante-post pricing, not for a welcome bonus. The licence is in place and the operator is registered with GAMSTOP, which means a self-excluded customer cannot open an account at all. The welcome offer is not on the page, and the account-opening work is the same price regardless. A reader who values in-play pricing on a smaller book will find a product here; a reader who values a sign-up bonus will not. The trade is between the welcome offer the brand does not run and the pricing product the brand does, and a careful reader makes that trade before the document upload, not after.

Betway

Betway holds a Gambling Commission remote licence under account 39372, with Betway Limited as the licence holder. The welcome offer for new UK and Ireland customers is £40 in free bet tokens (4 x £10) credited on settlement of a first bet of at least £10 at minimum odds of 2.0, with a seven-day expiry and debit card deposits only. The credit is split into four £10 tokens, and the credit carries 1x wagering at minimum odds of 1.75 or higher. The minimum deposit is £10.

The verdict is that the wagering requirement on the credit is the cost the headline does not show. A £40 free-bet credit split into four £10 tokens is generous; the 1x wagering at 1.75 is a clearing condition the customer must satisfy before winnings are withdrawable. A £10 token used on a bet at 1.75 returns £17.50 in winnings if it wins, of which £10 is the bonus balance to be wagered again at 1.75 to clear. The seven-day expiry is the second cost: a customer who delays three days past settlement loses one token per day. The bookmaker is UK-licensed. This £40 credit has a clearing schedule of four winning bets at 1.75 within seven days, in exchange for a £10 first bet at 2.0 by debit card, and the net benefit is the credit minus the clearing cost at a 1.75 floor.

Smarkets

Smarkets holds a Gambling Commission remote betting intermediary licence under account 39173, with Smarkets (Malta) Limited as the licence holder. The operator also runs the SBK sportsbook, whose 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 qualifying bet is heavier than most in the comparison — a £20 bet at minimum odds of 3.0 — but the credit is larger, faster and arrives within 48 hours.

The verdict is that the trade is between the size of the qualifying bet and the speed at which the credit arrives. A £20 bet at 3.0 is the cost of a £60 free-bet bundle; the 48-hour credit window means the customer does not have to chase a seven-day expiry. The wider product — Cash Out, Bet Builder, live horse racing streams — sits behind the offer, and a reader who values exchange-style products reads SBK differently from a fixed-odds bookmaker. Every brand mentioned is UK-licensed. This offer provides a £60 free-bet bundle with a 48-hour credit window in exchange for a £20 first bet at 3.0, and it is a good example of paying the price upfront to receive a larger credit.

Hollywoodbets

Hollywoodbets holds a Gambling Commission remote licence under account 53028, with Hollywoodbets International UK Limited as the licence holder. The sports welcome offer is a stake-back free bet of up to £30 on a first qualifying losing accumulator: stake £10 or more, three or more legs, minimum odds of 4/1 (5.0) on the combined acca, settled within seven days; one free bet per customer. The offer pays the stake back as a free bet only on a losing first acca; on a winning first acca the customer takes the profit and the offer is consumed.

The verdict is that this is a hedge against losing, not a bonus for winning. A £10 accumulator with three or more legs at 4/1 is a routine acca; the free bet pays up to £30 in stake-back if the acca loses, and pays nothing if it wins. A reader who expects to win the first acca is reading the offer wrong; a reader who wants insurance on a first acca at 4/1 is reading it right. The brand holds a GB licence. This offer provides stake-back insurance on a £10+ acca at 4/1 against a loss, with a £30 cap and a seven-day settlement window, and it remains a sensible pick for a customer who is already planning to place this kind of bet.

Octobet

Octobet holds a Gambling Commission remote licence under account 62545, with Octopus Game Limited as the licence holder. The sportsbook welcome offer is 50% back as a free bet up to £50, plus a £10 casino bonus for new customers. The mixed-product promotion ban in force since 19 January 2026 means the two bonuses are separate opt-ins: the customer opts in to the sportsbook offer on its own and the casino bonus on its own. The sportsbook credit is a 50% stake-back on a losing first bet, capped at £50.

The verdict is that the headline is a stake-back up to £50, not a cash bonus. A first bet that loses returns up to £50 in free-bet credit; a first bet that wins takes the profit and consumes the offer. The £10 casino bonus is a separate opt-in, separate clearing schedule and separate terms, and a reader who only intended to bet on sport can opt in to the sportsbook offer and leave the casino bonus unclaimed. The licence is in place. The reader claiming this offer receives stake-back on a first bet against a loss with up to £50 in free-bet credit, plus an optional £10 casino bonus.

10bet

10bet holds a Gambling Commission remote licence under account 43173, with Blue Star Planet Limited as the licence holder. The 10bet app advertises a 100% betting bonus up to £50 for UK sign-ups, plus daily free bets and free spins. The mixed-product promotion ban means the betting bonus and the casino free spins are separate opt-ins: the customer opts in to the betting bonus on its own and the free spins on their own. The 100% betting bonus up to £50 is a deposit bonus, with a wagering requirement attached.

The verdict is that the headline is a 100% deposit bonus up to £50, not a free bet. A deposit bonus carries a wagering requirement the customer must clear before any winnings are withdrawable, and the maximum wagering requirement the Commission’s promotion rules permit is 10x — a £50 bonus at 10x means £500 of qualifying bets. The exact multiple on 10bet’s bonus sits in the operator’s own terms and is the part of the offer the customer checks before opting in. The free spins and daily free bets are separate products with separate terms. The licence is in place. The reader claiming this offer receives a deposit bonus of up to £50 with a wagering requirement capped at 10x under Commission rules, plus an optional free-spins package.

What The Promotion Rules Do Not Settle

Three open questions sit behind the comparison above and have not been closed by research or by the Commission’s published guidance.

The first is whether the 10x wagering cap applies to free bets with no wagering condition. The cap is written around “bonuses”, and a free bet with no wagering condition is, on the operator’s own terms, a stake credit rather than a bonus. Several brands in this comparison — Spreadex, Betway at 1x, BoyleSports’ acca insurance — attach small wagering requirements to their free bets that the cap would catch. A brand with a free bet whose small print reads “no wagering” is sitting on a point the Commission has not settled. A reader who treats that small print as a settled rule is reading the marketing copy; a reader who treats it as a marketing word reads the operator’s terms and waits for the rule.

The second is the cap on the money value of a bonus. The promotion rules cap wagering at 10x but do not cap the headline number, and the comparison above includes welcome offers from £15 to £60 in free-bet credit plus deposit bonuses up to £50. The rule is a clearing cap, not a price cap, and the headline numbers in this market remain wide open.

The third is the cap on the minimum odds on a qualifying bet. The rules do not cap the floor; the floor is set by each operator and runs from 1/2 (1.50) to 3.0 in this comparison. A higher floor is a higher cost on the qualifying bet, and the floor is the part of the offer the customer checks before opting in. Spreadex’s qualifying fixed-odds bet at minimum odds of 1/2 is a routine condition; Smarkets’ qualifying bet at minimum odds of 3.0 is a heavier one, and the £60 credit it unlocks is paid for in the qualifying bet rather than in the clearing schedule.

What A Free Bet Is Actually Worth

A free bet whose stake is not paid back is worth less than its headline, and the difference can be measured. The arithmetic uses the formula for free-bet value: the value of a free bet is the free-bet amount multiplied by the price minus one, divided by the price, multiplied by the payout share of the market on which the free bet is used.

Take an illustrative two-way market priced at 1.90 on each side. The payout share of a two-way market at 1.90 / 1.90 is the reciprocal of one over 1.90 plus one over 1.90, which is 1.90 divided by 2, or 0.95 — a 95% payout share, or a 5% margin, which is the kind of margin a tight football 1X2 carries. On that market, a £10 free bet is worth £10 multiplied by (1.90 minus 1) divided by 1.90, multiplied by 0.95. The arithmetic gives £10 multiplied by 0.90 divided by 1.90, which is £4.74, multiplied by 0.95, which is £4.50. A £10 free bet at 1.90 on a market with a 5% margin is worth £4.50 on average, not £10. The headline is the stake; the value is the expected return.

The value moves with the price and with the margin. A free bet used at 2.0 on a market with the same 5% margin is worth £10 multiplied by (2.0 minus 1) divided by 2.0, multiplied by 0.95, which is £5.00 multiplied by 0.95, or £4.75. A free bet used at 3.0 on a 5% margin market is worth £10 multiplied by (3.0 minus 1) divided by 3.0, multiplied by 0.95, which is £6.67 multiplied by 0.95, or £6.33. A free bet used at 5.0 is worth £10 multiplied by 4 divided by 5, multiplied by 0.95, which is £8 multiplied by 0.95, or £7.60. A free bet on a market with a heavier margin — a 7% margin on a typical outright market — is worth proportionally less: £10 at 2.0 on a 7% margin market is worth £5 multiplied by 0.93, or £4.65.

The headline number is what the customer sees; the expected return is what the free bet is worth. A £40 free-bet credit on a £20 qualifying bet at 2.0 is worth, on average, four times £10 at 2.0, or £19.00 on a 5% margin market. That is the value of the offer before the qualifying bet is paid for. The qualifying bet itself costs the customer the expected loss at the qualifying market’s margin: a £20 bet at 2.0 on a 5% margin market costs 20 multiplied by 0.05, or £1.00 in expected margin. The net value of a Coral-style £40-for-£20 offer, on these assumptions, is £19.00 minus £1.00, or £18.00. The headline is £40; the value is around £18.00 on a typical football market.

The same arithmetic on a Betway-style £40 split into four £10 tokens with 1x wagering at 1.75 is different. The credit is £40 in headline terms but the customer has to win once at 1.75 to clear each £10 token. A £10 free bet at 1.75 on a 5% margin market is worth £10 multiplied by (1.75 minus 1) divided by 1.75, multiplied by 0.95, which is £4.29 multiplied by 0.95, or £4.07. The 1x wagering requires the customer to win once at 1.75 to convert the winnings into withdrawable cash. A winning £10 free bet at 1.75 returns £7.50 in profit, of which the £7.50 must be wagered once more at 1.75 to clear. The expected value of that second step, on a 5% margin market, is £7.50 multiplied by the probability of winning at 1.75 on a 5% margin market — which is approximately 0.50, since a 5% margin market at 1.75 prices each side at about 1/1.50 implied, which is around 50/50 — multiplied by the expected clearing value at the next step. The compounding reduces the headline further. The value is below £4.07 per £10 token on a routine clearing schedule, and the four-token bundle is worth less than £16.00 on the same market assumptions as Coral’s £40-for-£20. The headline is £40 in both cases; the value differs by the clearing schedule.

This is the figure behind the comparison: a free-bet credit is worth its headline multiplied by a factor that depends on the price it is used at and the margin of the market it is used on, minus the expected cost of the qualifying bet, minus the expected cost of any clearing conditions on the credit. The headline is the price the bookmaker advertises; the value is the price the customer receives. The two are not the same, and the gap is the cost the marketing copy does not name.

What To Check Before You Opt In

Five lines sit on every welcome offer in this comparison, and a careful reader checks each one before the qualifying bet is placed.

The first is the minimum odds on the qualifying bet. A 1/2 (1.50) floor is the lightest condition in this comparison; a 3.0 floor is the heaviest. The higher the floor, the more the qualifying bet costs in expected margin, and the heavier the cost the more important the rest of the offer becomes.

The second is the expiry on the credit. A 48-hour credit window, as on SBK’s £60, is generous; a seven-day expiry on Coral’s £40 bundle is routine; a seven-day expiry on Betway’s £40 in four £10 tokens with 1x wagering is tight, because the four tokens are issued together and expire together seven days later, leaving the customer four bets to place in seven days.

The third is the market restriction on the credit. Sky Bet’s free bets, for example, can be used only on single or each-way markets, not multiples, and exclude virtuals. A customer who wants to use the credit on an acca has misread the small print. The market restriction is the part of the offer that determines whether the customer can use the credit on the bet they intended to place.

The fourth is the wagering multiple on the credit. The Commission’s cap of 10x is the maximum, not the typical; a free bet with 1x wagering, as on Betway, is heavier than it sounds, because the customer has to win once at the credit’s minimum odds to convert any of the winnings into withdrawable cash. A free bet with no wagering is a different product, and a reader who sees that line checks the operator’s own terms rather than the marketing copy.

The fifth is whether the stake of a free bet is returned with the winnings. By default in this market it is not. The default is what the operator’s small print confirms, and a customer who expects the stake to come back has misread the offer.

The Operators In Wider Context

Several operators in this comparison run additional products that are not on the welcome page and that a careful reader notices before opening the account. Kwiff offers a Supercharge feature that can instantly boost the odds on a bet from 2/1 to 20/1, with the boost applying to singles or multis on any event; the boost is a one-off enhancement on a stated selection, settling at the boosted price if the bet wins, and is one of the more aggressive price-boost products in the market. Kwiff also offers Bet Builder and Bet Builder+ for combining bet-builder bets across games. bet365 offers Bet Builder+, Super Boosts, Winnings Boosts on Bet Builders and selected singles, and daily Bet Boosts; the menu of boosts is broader than most operators’ and is a different reason to open the account than the welcome offer. William Hill runs a Football Acca Boost that pays a percentage boost on accas of two or more legs at minimum odds of 1/5 per leg, from 3% on a double up to 200% on twenty or more legs, with a maximum boost of £10,000 per online bet, running until 30 May 2027. Unibet, since 1999, runs a Bet Builder, daily Uniboosts, live streaming through Unibet TV, in-play betting, Best Odds Guaranteed on horse racing and Cash Out on thousands of markets. Spreadex’s wider product combines fixed-odds betting and spread betting under the FCA for spread betting and the Gambling Commission for fixed odds, with Acca Boosts paying a cash boost from 5% up to 100% on football accumulators of three or more selections depending on the number of legs. BoyleSports runs Acca Insurance requiring opt-in, a £5 minimum stake, minimum odds of 1/2 and a maximum refund of £20 as a free bet expiring in seven days, plus Acca Loyalty requiring opt-in, a £5 minimum stake, minimum combined odds of 3/1 and five or more settled legs. QuinnBet’s free bets are valid for seven days from credit, usable on any market at odds of 1/2 or greater with maximum odds of 50/1, and exclude Trixies, Patents and Yankees. Star Sports offers Bet Boosts, Daily Specials and Weekend Enhanced Boosts, plus in-play on football, horse racing, golf and US sports. DAZN Bet offers Cash Out, Bet Builder, daily bet boosts and in-play betting; cash-out unavailability does not void a bet, and the operator provides deposit limits, loss limits and wagering limits as safer-gambling tools.

These products are not the welcome offer; they are the reason to keep the account open after the welcome credit has been used. A reader who opens an account for the welcome offer and closes it a week later is paying the account-opening cost for a one-time credit; a reader who opens it for the welcome offer and stays for the daily boosts, the BOG concession or the in-play pricing is paying the same cost for an ongoing product. The trade is between a one-time free-bet credit and a longer relationship with the bookmaker, and the comparison above does not settle it either way.

What A Reader Does With This Page

The comparison above lines ten UK-licensed bookmakers on the four lines a sign-up offer costs the customer: the minimum odds on the qualifying bet, the expiry on the credit, the market restrictions on the credit and the wagering multiple on the credit. The headline number is on the table; the value of the headline, after the qualifying bet and the clearing schedule, sits in the section on free-bet value above. A reader who chooses between the offers on this page does so on the value, not the headline, and the value is the figure the small print carries and the headline does not.

The mixed-product promotion ban is the structural change behind the comparison. Operators no longer ask a customer to opt in once and then place sports bets to unlock casino spins, and the welcome packages in this comparison now run as separate sportsbook and casino offers with separate opt-ins. A reader who only intended to bet on sport can opt in to the sportsbook offer and leave the casino offer unclaimed, and the account-opening work is the same price either way.

The promotion rules also cap wagering at 10x, which is the maximum, not the typical. The brands in this comparison sit on a range from no wagering (where the small print says so) to 1x at minimum odds of 1.75 (Betway). A reader who treats the 10x cap as a typical clearing schedule is reading the rule as if it were the market; the rule is the ceiling, and the offers sit below it. The cost of a brand’s clearing schedule is the wagering multiple on its credit, not the Commission’s cap, and the comparison is built on those brand-specific multiples, not on the cap.

The promotion rules do not cap the minimum odds on a qualifying bet, do not cap the money value of a bonus, do not cap the expiry on a free bet, and do not require the stake to be returned with the winnings. Each of those lines is set by the operator and sits in the operator’s own terms. A reader who reads the comparison above has read the headlines; the small print is what carries the cost the headlines do not, and the small print is what the comparison invites the reader to read next.

Frequently Asked Questions

How does signing up with a UK betting site work?

A reader registers an account by submitting a name, address and date of birth; the operator verifies those details against public records and credit-reference data before the customer can deposit or gamble, including when the first action is to claim a free bet. The verification is mandatory for every GB-licensed online operator and has been since 7 May 2019; the welcome offer is not a way to test a site without showing ID.

How does signing up with a sportsbook differ from a betting exchange?

A sportsbook is a fixed-odds bookmaker that sets prices and takes bets against the customer; a betting exchange is a platform that matches customers back and lay against each other, with the operator taking a commission on net winnings. The Commission’s licence categories treat them as different permits, and the welcome offers differ in shape and in cost. Spreadex and Smarkets in this comparison hold betting intermediary licences alongside or instead of standard betting licences.

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

The Commission’s promotion rules, in force since 19 January 2026, cap wagering requirements on bonuses at 10x: a £10 bonus may not require more than £100 of qualifying bets. The cap is per bonus and does not cap the money value of the bonus, the minimum odds on a qualifying bet, the expiry on a free bet, or the stake-returned condition. Whether the cap applies to free bets with no wagering condition is not established by the Commission’s published guidance.

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

The minimum odds on the qualifying bet is the floor the customer’s first bet must clear before the free-bet credit is issued; the wagering requirement on the credit is the multiple of the credit the customer must bet through before any winnings are withdrawable. A £40 free bet at 1x wagering and minimum odds of 1.75 is worth less than the same £40 at no wagering, because the customer must win once at 1.75 to clear each token. The headline is the credit; the clearing schedule is the cost.

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

A free bet is a stake credit, not a cash bonus, and by default in this market the stake is not returned with the winnings; the customer takes the profit only, and the stake is consumed. The default is what each operator’s terms confirm, and a customer who expects the stake to come back has misread the offer. A £10 free bet at 2.0 returns £10 in profit, not £20.

Can a betting bonus be tied to a casino bonus under the Commission’s promotion rules?

The mixed-product promotion ban, in force since 19 January 2026, prohibits an offer that requires a customer to gamble on two or more product types — for example, betting plus casino — from a single opt-in. The same free bet can still be issued, but the casino bonus cannot be tied to it. Several operators in this comparison, including Octobet and 10bet, run separate sportsbook and casino bonuses with separate opt-ins under the ban.

Content created by the «Accumulator» team