How football betting odds actually work — and what they cost the punter behind them

Updated October 2026

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Every price a bookmaker prints already contains its cut. That cut is the same number whether you call it the bookmaker’s margin or the overround, and it is the first thing a serious reader of football odds learns to see — because a £10 stake at 3.00 returns £30 only on paper, and only if the operator decides to settle the bet, which it usually will because the price it offered already guaranteed its slice. The rest of this page is built around that single fact: the price is not a gift, the price is the offer, and the offer is shaped by the licence, the markets and the operator’s own terms behind it. Data current as of October 30, 2026, verified against the Gambling Commission’s public register.

Reading odds before placing a bet

Football punting starts long before a fixture is picked. The first decision is whether to take the price on offer, take it later, or look elsewhere; the second is what kind of bet to place on it. Most beginners rush past both questions and pay for it.

Decimal versus fractional

British bookmakers publish two forms. Fractional odds of 5/1 mean a £1 stake returns £25 — £5 profit plus the £1 stake back. Decimal odds of 6.00 mean a £1 stake returns £6.00 — £5 profit plus the £1 stake back. The two forms describe the same price. Decimal odds are arithmetic: stake multiplied by the price is the total returned if the bet wins. Fractional odds make the profit more visible, which is why racing punters still reach for them, but every combination bet, every acca insurance calculation and every Bet Builder slip on a British site settles in decimal. Use the form the slip uses; do not translate one into the other in your head while a match is moving.

Single, each-way, accumulator

A single bets on one outcome. An each-way bet is two bets of equal stake — one on the outcome, one on a place finish — so the stake doubles and the win only pays one of them at full price and the other at a fraction. Each-way terms are not standard: horse racing has a clear place-part structure, football does not. An accumulator (“acca”) strings several outcomes into one ticket; the odds multiply, so a four-fold at 2.00, 2.50, 1.80 and 3.00 pays 2.00 × 2.50 × 1.80 × 3.00 = 27.00 times stake if all four win. Every leg must win, or the whole ticket loses. The bookmaker likes accumulators because each leg carries its own margin, and the margins compound into something larger than any single price on the coupon. The punter likes accumulators for the same reason the lottery does: a small stake for a number with many zeroes.

What the price already contains

This is the calculation worth doing. The overround is the bookmaker’s slice of every market, calculated by converting each price to an implied probability (1 ÷ decimal odds), summing across all outcomes, and subtracting 100%. A match-result market at 2.10 / 3.40 / 3.60 has implied probabilities of 47.6%, 29.4% and 27.8%, summing to 104.8% — an overround of 4.8%. The bookmaker’s margin is the overround expressed as a percentage of the total probability (4.8% ÷ 104.8%), which is approximately 4.6%. Lower margins mean more of every pound staked returns to punters as winnings, in the long run.

The reader does not see this number on the betting slip. The reader sees a price and a fixture. That gap is the margin of the market and the reason every coupon on every bookmaker leans the same way.

The menu of football bets

Once the price is read correctly, the choice is what to bet on. Football has the widest menu of any British sport, and the widest menu is where the worst prices live.

The match-result market

Home win, draw, away win. This is the headline market on every coupon and the price is usually the tightest on the page. Draw pricing is where the rookie loses most often, because the bookmaker’s margin on the draw is the highest of the three and a draw is the outcome that punts out of a coupon most consistently.

Both teams to score and over/under

Both teams to score (BTTS) asks whether each side scores at least once; over/under asks how many goals the match produces. These markets usually carry a margin a point or two higher than the match-result market, because more outcomes are bundled into fewer prices. A BTTS market priced Yes 1.80 / No 1.95 implies 55.6% + 51.3% = 106.9% margin. That is normal for a derivative market. The punter pays it for the convenience of not picking a winner.

Handicaps and Asian lines

A handicap gives one side a head start of goals before the match begins. The Asian handicap line — typically a quarter goal, a half goal or a whole goal — splits the stake across two adjacent lines so the bet can win, lose or push by half-stake increments. The margin is tighter on Asian lines than on the European 1X2 line, sometimes 2–4%, which is why serious football punters shop there. A reader who has not seen the trade first should not start there: an Asian handicap line on a fixture the reader has not watched is two unknowns, not one.

Bet Builder and same-game multi

A Bet Builder combines several markets from one match into one ticket — for example, home win, over 1.5 goals and a named player to score. The slip multiplies the prices of the legs into one combined price. The bookmaker likes Bet Builders because the legs are correlated (a home win and a home goalscorer are not independent events), and the correlation is not in the price the punter is offered. Several of the operators reviewed below — bet365, NetBet and Swifty Sports, with Swifty listing Bet Builder as coming soon — offer a builder of some form. Read what the bookmaker’s own terms say about the maximum number of legs and the maximum combined price before relying on one.

Outright and ante-post

Outright markets run for the whole tournament — Premier League winner, Champions League winner, World Cup outright. Ante-post means a bet placed before the final field is known. The margin on outrights is wider than on individual matches, sometimes 12–20%, because the field is large and the long tail is short-priced. The other side of that is value: a 50/1 shot before the season starts is not the same price as a 50/1 shot after the group stage. The next World Cup on the page is the one played in 2026 — Spain beat Argentina 1–0 after extra time in the final on 19 July 2026 — so outrights on a major tournament are a moving target all the way to kick-off.

The football calendar the punter bets on

The Premier League is the spine. The 2026–27 Premier League runs from 21 August 2026 to 30 May 2027, with twenty teams, three promoted clubs in Coventry City, Ipswich Town and Hull City, and Arsenal as defending champions. Around it sit the domestic cups — FA Cup, EFL Cup — and the European club competitions, plus the international windows and the major tournaments the FIFA calendar still puts on the page. Every one of those competitions carries its own price behaviour: league matches price tighter because the volume of information is dense, knockout matches price wider because the field is binary and a single mistake ends the run.

The Laws of the Game that govern every one of those fixtures are maintained by the International Football Association Board (IFAB), which has done so since 1886 — long before anyone thought to bet on them. A standard adult match is two halves of 45 minutes with stoppage time added at the referee’s discretion. A tied match goes to extra time of two further 15-minute periods in those competitions that allow it, and some competitions then use a penalty shoot-out. Each team fields a maximum of eleven players, including the goalkeeper, and the goal is 7.32 m wide and 2.44 m high. None of those numbers matters to the punter until the referee adds nine minutes of stoppage time in the 95th minute and the slip settles on a goal scored at 90+8. Then the goal dimensions matter, and the Laws of the Game that govern them.

The ten bookmakers, and what each one sets apart

Every brand below holds a remote general betting standard (real events) licence with the Gambling Commission. The licence number is on the Commission’s public register — searchable by business name, trading name, domain or account number — and is the only test of whether a brand holds a GB licence. Several brands sit under one licensee; treat the licence holder, not the brand badge, as the legal counterparty.

Swifty Sports — Best Odds Guaranteed plus live streaming

Swifty Global (UK) Ltd, Gambling Commission account 58957, remote general betting standard (real events). Swifty offers Best Odds Guaranteed on horse racing, Cash Out on horse racing and football, daily price boosts, live streaming and in-play betting. A Bet Builder is listed as coming soon, which is a flag worth noting: a builder is on the way, not yet in the slip, and the slip today is BOG, boosts, Cash Out and the in-play line. For a punter who prices football mainly against a BOG baseline and values live streaming on the same login, the offer is unusually rounded for a newer licence holder.

Star Sports — A trader on the phone

Star Racing Limited, Gambling Commission account 9177. Star Sports publishes a number — 08000 521 321 — that customers can ring to open an account, place a bet or ask a query, alongside an email address at [email protected]. A bookmaker that publishes a phone number for a human trader is a different offer from a slip-only app, and it suits a punter who wants to talk a price rather than click it. The trade-off is the catalogue: a smaller book usually means fewer markets per fixture, not worse prices on the markets it carries.

NetBet — Daily Boosts and a dynamic Bet Builder

Netbet Enterprises Limited, Gambling Commission account 39170. NetBet runs Daily Boosts, Profit Boosts and free bet offers, a Bet Builder with instant dynamic odds — the price recalculates as the legs are added, instead of locking when the slip opens — and sports stats for the major leagues. The dynamic builder is the point to test: the price you see is the price you get when the bet is placed, not a stale number from the moment the builder opened.

Betmaster — Football, cricket, racing, NFL and eSports

BM Solutions GB Ltd, Gambling Commission account 65699. The Betmaster catalogue runs football, cricket, horse racing, NFL and eSports, with League of Legends and Dota 2 listed in the betting menu. eSports is not a niche in 2026; it is a category most of the bigger books carry, but the depth of the League of Legends and Dota 2 lines is what sets Betmaster apart. For a punter who follows the esports calendar as closely as the football one, that depth is the reason to look here.

10bet — Cash Out, Bet Builder and live streaming

Blue Star Planet Limited, Gambling Commission account 43173. 10bet covers football, tennis and horse racing, with Cash Out, Bet Builder and live streaming across the catalogue. The combination is the standard big-book bundle, and the depth on each of the three is the test — Cash Out on lower leagues, builder markets on the live feed, streaming on the second-tier events. Worth a look for a punter who likes to close a position mid-match.

Betfred — Twenty-one sports and 2,000 casino games

Petfre (Gibraltar) Limited, Gambling Commission account 39544. The Betfred app covers 21 sports plus over 2,000 casino-style games — the football catalogue is wide, the casino side is the reason Betfred is a familiar High Street name as well as an app. The trade-off is the same as every wide catalogue: the bigger book covers more markets, prices less well at the margins. Betfred is a name many British punters have had an account with at some point; the question is whether the football price on the coupon today is the one to take.

BetGoodwin — A three-leg welcome built from £15 of free bets

Goodwin Racing Limited, Gambling Commission account 2927. BetGoodwin’s sports welcome offer, on its own terms, is “Bet £10 & Get £15 in Free Bets”, split across a £5 sports bet, a £5 acca and a £5 Sub-Cover bet. The Sub-Cover bet — a refund as a free bet on a losing correct-score line — is a small, specific feature that does not appear on every book. For a punter who likes a refund on a long-shot correct-score punt, the Sub-Cover is the point of entry.

BoyleSports — £20 in free bets for a £10 first bet

Boylesports Enterprise, Gambling Commission account 39469. BoyleSports’ UK welcome offer, on its own terms, is £20 in free bets when a £10 bet is placed. Irish customers see a parallel €30 in free bets for a €10 bet, which is a reminder that BoyleSports is an Irish-founded book with a UK arm rather than a UK-founded book — the licence is GB, the offer has two versions. The headline number is generous against the field; the wagering condition on the free bet is the read-the-small-print check.

Fitzdares — Lucky 15s, ante-post and specials on seven sports

Fitzdares Limited, Gambling Commission account 400. The Fitzdares app runs cash out, accumulators, Lucky 15s, specials and ante-post markets on horse racing, football, tennis, rugby, cricket, golf and American football, with in-play live odds. Lucky 15s — fifteen bets across four selections — are a familiar format for racing punters; their appearance on a football book is a flavour signal rather than a value claim. Ante-post depth across seven sports is the more durable point.

QuinnBet — Best Odds Guaranteed on Irish and UK racing

QuinnBet (Gibraltar) Limited, Gambling Commission account 61011. QuinnBet’s Best Odds Guaranteed, on its own terms, applies to Irish and UK horse racing bets from 10:00am daily on singles, multiples and system bets, with a maximum benefit of £150 per customer per race. The cap is the read: a punter whose BOG pay-out would clear £150 on a single race loses the rest, and the cap is the line where a longshot advantage stops mattering. For a racing-led punter under that line, the offer is clean; for one over it, the offer is something else.

The licence numbers above are the test of who holds a GB licence and the rows below are the test of what each one offers the punter.

The point of reading the licence is to know who is on the other side of the bet. The point of reading the offer column is to know which one suits the way you bet. The two are not the same test.

How a British bookmaker is licensed

In Great Britain, the Gambling Commission licenses every commercial bookmaker that takes remote bets from customers in England, Scotland and Wales. Northern Ireland sits outside the Gambling Act 2005 and runs on its own older law, so a GB licence is a GB licence, not a UK one. Since the Gambling (Licensing and Advertising) Act 2014, an operator whose remote facilities are used in Great Britain needs a Commission licence wherever it is based — a Curaçao, Maltese or Gibraltar licence is not a substitute for the GB one. There is no state monopoly, no cap on the number of licences, and no statutory list of permitted sports or markets: an operator holds a licence for a category and runs its own catalogue under the Licence Conditions and Codes of Practice.

Betting licence types cover remote general betting standard (real events), remote general betting standard (virtual events), remote general betting limited, remote pool betting and remote betting intermediary — the licence that runs a betting exchange. The Commission’s public register is searchable by business name, trading name, domain or account number, and is the whole test of whether a brand holds a licence. A brand running on a .com address is as likely to be licensed as one on .co.uk; the domain proves nothing, the register proves everything. No brand is “the only” licensed one — the register lists hundreds.

Financial spread betting is regulated by the Financial Conduct Authority, not the Commission, and a spread-betting book has to be clear about which regulator oversees which product. Spreadex is the worked example: regulated by the FCA for spread betting and by the Gambling Commission for fixed-odds betting, and states that losses on the spread side can exceed the deposit. That single statement is why spread betting carries a different risk warning from a fixed-odds coupon.

The minimum age is 18. Since 7 May 2019, name, address and date of birth are verified before a customer can deposit or gamble, including with a free bet or bonus. There is no anonymous play at a licensed site. That is the trade the punter makes for the protections that come with the licence — and the protections are real.

Staying in control of the bet

The same licence that lets a bookmaker take your bet obliges it to look after the customer behind the bet. The framework is the LCCP and the Remote Technical Standards, and the practical levers are GAMSTOP, the vulnerability check, the deposit limit and the safer-gambling tools.

GAMSTOP is the national multi-operator online self-exclusion scheme and a mandatory licence condition for online operators since 31 March 2020. Exclusion periods are six months, one year, five years, or five years with auto-renewal. After the minimum period the exclusion stays in place for a further seven years unless the customer asks GAMSTOP to remove it. GAMSTOP covers online sites and apps; betting shops run a separate offline scheme. Every GB-licensed online operator takes part. That is why “betting sites not on GAMSTOP” is, in the GB market, the same phrase as “GB-unlicensed sites” — and the consequences of that phrase are dealt with in the next section.

A financial vulnerability check has applied since 30 August 2024 (LCCP condition 3.4.4), and from 28 February 2025 it triggers when a customer’s deposits minus withdrawals exceed £150 in a rolling 30 days. It is a public-record check — bankruptcy or county court judgments, for example — not an income check and not a credit reference check. A separate set of financial risk assessments has been announced in a staged plan (Commission article of 7 July 2026) with no start date — write “announced, staged, no start date”, not “in force”. Deposit limits are an operator offer under RTS 12, with the first changes in force since 31 October 2025 and a second phase postponed to 30 September 2026; whether the second phase is live today is not established. There is no state-set deposit or loss ceiling: limits are the customer’s choice.

Help is free and independent. GamCare runs the National Gambling Helpline. GambleAware funds treatment and education. The NHS runs gambling clinics. Gamblers Anonymous runs meetings. The names appear in the safer-gambling section of every licensed operator’s footer for a reason.

What the unlicensed route costs

Search traffic that lands on “football betting sites not on GAMSTOP” or “football betting not on GAMSTOP” usually lands on offshore books running on a Curaçao, Anjouan or similar licence. Those books do not appear on the Commission’s register, do not run GAMSTOP, do not run the £150 vulnerability check, do not honour the 10x bonus cap introduced on 19 January 2026 and do not sit inside the LCCP’s dispute-resolution framework.

The legal test is not whether the punter is prosecuted. The Commission’s enforcement is against the operator: providing gambling facilities in Great Britain without the licence the Act requires is an offence under section 33 of the Gambling Act 2005 (up to 51 weeks’ imprisonment, a fine up to level 5, or both; six months in Scotland), and the Commission has been given, or is about to receive, court-order DNS blocking powers. ISP blocking is not in operation as a flat rule. The honest framing is this: a GB licence means checks, limits, GAMSTOP, the bonus cap — and identity verification before the first bet; an offshore licence means none of those protections and no British route to recover funds if the operator withholds them. “Legal to use” is not the right phrase for either side. Licensed = the package of protections. Unlicensed = the absence of that package.

For a punter whose reason to look offshore is that GAMSTOP is on and cannot come off yet, the route back inside the GB market is to wait out the minimum exclusion period or use the support services named above. That route costs less than a fund-dispute with an offshore book.

Crypto, and the other things players ask about

Bitcoin and crypto betting on football is a real product at offshore books. The licensed GB market does not run on crypto deposits at any of the brands reviewed here, and a “British named-account rule, a state list of permitted payment methods and any rule for or against cryptocurrency deposits at licensed operators” is not established — write payments only from each operator’s terms. The general shape of the difference is that crypto deposits at an unlicensed book are pseudonymous on a public ledger, not anonymous in law, and the trail leads back to a wallet that the licensed GB book would not accept. Credit cards are banned for gambling in Great Britain since 14 April 2020 (LCCP condition 6.1.2), including credit-card-funded e-wallet payments; debit cards and bank-based payments are not covered. Identity verification before the first deposit means no anonymous play at a licensed site, full stop. The audit question is not “can the punter be anonymous?” — the audit question is “does the punter want a route back to their money if the book withholds it?”

Bonuses and free bets, and what they actually cost

A “free bet” is usually not a refund. The stake of a free bet is not paid back with the win, so a £10 free bet at 3.00 returns £20 of profit, not £30. An “enhanced odds” offer usually pays the winnings at the enhanced price and the stake at the original price, again leaving the stake out of the return. A “risk-free” bet that refunds a losing stake as a free bet is a free bet, not a refund — the punter still has to clear the free bet’s own condition. Each of those offers is a marketing word for a specific arithmetic, and the arithmetic is what the offer costs.

The promotion rules in force since 19 January 2026 cap wagering requirements on bonuses at 10x — a £10 bonus at 50x requires £500 of qualifying bets, of which the cap allows no more than £100. Mixed-product promotions — an offer that requires gambling on two or more product types, such as “bet on football to get free spins” — are banned. Whether the cap applies to free bets with no wagering condition is not established; whether there is a cap on the money value of a bonus is not established. The 10x cap is a ceiling on the worst offers, not a floor on the best ones; it does not turn a £30 free bet into £30 of cash.

The offers above — Bet £10 Get £15 at BetGoodwin, £20 in free bets on a £10 first bet at BoyleSports — are described the way the operators’ own terms state them, because every bonus carries a wagering condition, a minimum price for qualifying bets, a deadline and a list of markets that count. The conditions are the offer; the headline number is the marketing. Read the terms before claiming, and never use a promo code from a third-party listing without checking the terms on the operator’s own site first.

The app and the mobile experience

The mobile app is where most British football bets are now placed. The bet365 app is the most downloaded sports betting app in the UK and the official global betting partner of the UEFA Champions League; that is a useful piece of context for a punter who likes Champions League outrights and wants to watch the price moves on the same device the bet is on. Other apps reviewed here run smaller catalogues — Betmaster covers football, cricket, horse racing, NFL and eSports; Betfred covers 21 sports plus 2,000 casino-style games; Lottoland UK’s app combines casino, lottery betting, sports betting and scratchcards and is licensed by the Gambling Commission for customers in Great Britain.

The questions that decide which app is the right one are not on the marketing page. Does the app settle the bet without a web fallback? Does it stream the match in the same window as the slip? Does Cash Out work in-play on the bet the punter actually placed? Does the Bet Builder lock the price at the moment the slip opens, or recalculate as legs are added? NetBet’s “instant dynamic odds” builder is the second kind; the Bet Builder+ on bet365 combines markets from one event into a single bet available pre-match and in-play, with Super Boosts, Winnings Boosts on Bet Builders and selected singles, and daily Bet Boosts. Read what each app says about the slip, not what each app says about itself.

Live betting, in-play and Cash Out

In-play betting is the act of placing a bet after the match has kicked off, with a price that updates as the match unfolds. GB bookmakers offer it; the controls are the operator’s licence conditions and customer-protection duties, not a statutory list. The bookmaker’s margin on an in-play price is usually a point or two wider than on the pre-match price, because the book is repricing in real time and the model has less information to lean on. A punter who has watched the match for twenty minutes has more information than the in-play model, sometimes, and that is the source of any edge an in-play punter finds.

Cash Out is the bookmaker offering to close the bet before the final whistle, at a price it sets in real time. The Cash Out price is the bookmaker’s price, not the market’s; the book is quoting both sides of the trade, and the spread on a Cash Out is the bookmaker’s slice of the position. Swifty Sports offers Cash Out on horse racing and football; 10bet, Betfred, Fitzdares and the rest of the field run a Cash Out button of some kind. The question is not whether Cash Out exists — every reviewed book has it — but what fraction of the bet the book offers to close, and on which markets. Bet Builder+ on bet365 is the case where the bet being closed is a same-game multi, not a single.

What the margin means for an in-play price

The margin calculation in the second section holds for any market, in-play or pre-match: implied probabilities summed across all outcomes, minus 100%, is the bookmaker’s margin. The in-play price has tighter time windows and a wider margin, and a price taken live is a price taken on bookmaker’s terms. The bettor who wants the best of the live feed prices needs to shop across books and is, by definition, comparing two bookmakers’ margins in real time — which is more than most punters do.

Taxes, and who actually pays

The player pays no tax on betting winnings in Great Britain — general information, not tax advice; a professional gambler should ask HMRC or an adviser. General Betting Duty is the operator’s tax on gross profits, currently 15%; from 1 April 2027 a new remote betting rate of 25% applies within it, while remote bets on UK horse racing, bets on self-service betting terminals in licensed premises, pool betting and in-person betting stay at 15%. Until 1 April 2027 the remote rate stays at 15%. Whether operators pass duty on through odds is not established. Never write that the player is charged duty, because the player is not. The Commission’s statutory levy is a separate charge, not a tax.

Advertising, shirt sponsors and the British shape

Advertising is not licensed by the Gambling Commission; it runs through the CAP Code (non-broadcast) and BCAP Code (broadcast), enforced by the ASA, alongside the LCCP marketing conditions. CAP Code section 16 sets the rules: marketing must be socially responsible, must not be of strong appeal to under-18s, and no one who is or seems to be under 25 may be featured gambling or play a significant role (with an exception for marketing placed where a bet can be made directly). The rule is about who may appear in the advertisement, not who may bet. “Whistle-to-whistle” — no betting ads on TV from five minutes before a live sporting event to five minutes after, before the 9pm watershed, with horse and greyhound racing excluded — has been industry code since 1 August 2019.

The Premier League clubs’ voluntary withdrawal of gambling sponsorship from the front of matchday shirts, from 2026/27, with sleeves and hoardings remaining, is not law. The shape of the British game in 2026 is a slimmed shirt-front and a sleeve that still carries the bookmaker. Whether that changes after 2026/27 is a question for the clubs, not the Gambling Commission.

Putting it together

The British football punter in 2026 sits inside a market that is licensed, taxed, advertised and protected in ways most other gambling markets are not. The price on the coupon reflects that — the margin is wider than the offshore equivalent and the bet is more likely to settle, because the book is licensed and the punter is verified. The choice is not “licensed versus unlicensed” as a moral question; the choice is “the protection package versus the price gap”, and the price gap closes as the licence framework matures.

For a punter who wants to bet on football in Great Britain, the route is: pick the book whose catalogue fits the way the punter bets, read the offer’s terms before claiming, check the licence on the Commission’s register, set a deposit limit, register with GAMSTOP if the bettor wants the off-switch, and use the bookmaker’s own safer-gambling tools when the bet stops being fun. The arithmetic on the coupon does the rest.

Frequently asked questions

How do I start betting on football as a beginner?

Pick one bookmaker on the Commission’s register, complete the verification before the first deposit (name, address and date of birth — credit cards are not accepted), and place a single bet on a match-result market at a price you have compared against two other books. Skip the accumulator, skip the welcome offer until you have read its wagering condition, and set a deposit limit on day one.

How are football bets placed online?

Open an account with a GB-licensed bookmaker, verify your identity, deposit by debit card or bank transfer, pick a fixture, choose a market, enter a stake on the slip, and place the bet. The bet appears under “My Bets” or “Open Bets” and settles when the match finishes or the market is settled by the operator.

How can I check that a bookmaker holds a Gambling Commission licence?

Use the Commission’s public register. Search by business name, trading name, domain or account number. The register lists the licence type, the licence holder and the operating sites; a brand on the register is GB-licensed for the category listed, and a brand not on the register is not. No domain, no badge and no “About Us” page substitutes for the register.

How is the return on a bet worked out from the stake and the odds?

Return = stake × decimal odds. Profit = stake × (decimal odds − 1). A £10 stake at 3.40 returns £34, of which £24 is profit. For an accumulator the prices multiply: a four-fold at 2.00, 2.50, 1.80 and 3.00 returns the stake multiplied by 27.00 if all four legs win.

What is the bookmaker’s margin and how can it be seen in the odds?

The margin is the bookmaker’s slice of every market. Calculate the overround by converting each price to an implied probability (1 ÷ decimal odds), summing across all outcomes, and subtracting 100%. A match-result market at 2.10 / 3.40 / 3.60 has implied probabilities of 47.6%, 29.4% and 27.8%, summing to 104.8% — an overround of 4.8%. The margin is the overround divided by the sum of those probabilities (4.8% ÷ 104.8%), approximately 4.6%. Lower margins mean more of every pound staked returns to punters as winnings, in the long run.

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