Booking points betting in Great Britain — who offers it, how it pays and what to watch before you place a bet
A booking-points market turns the referee’s card into a betting line. Yellow cards and red cards become a running tally, and the punter backs an outcome on the total. Some bookmakers also sell a “team” version, where only one side’s cards count, and an “over/under” version where the line is set a half-point off a whole number. Every selection sits inside a margin the bookmaker keeps, and every card settled is settled from a feed the operator chooses.
Data current as of 27 October 2026 and checked against the Gambling Commission’s public register for remote general betting licences.
Selection criteria for booking points betting sites in the UK
A shortlist of booking-points betting sites is not a list of brands; it is a list of licences. Every brand below holds a remote general betting licence with the Gambling Commission for Great Britain and is therefore authorised to offer a card market at all — but only some of them give that market any real space. The choice of operator runs through four questions, and the answer to one tends to be the reason the next one matters.

Licence
The first cut is binary: is the brand on the register? A Great Britain licence is the only thing that puts a bookmaker inside the country’s consumer-protection frame — dispute routes, GAMSTOP coverage, the 10x bonus cap, the £150 financial-vulnerability check. Brands operating from Curaçao, Malta or Gibraltar without that licence have none of those, and the loss is the consumer’s, not the regulator’s. A licence is also a fact you can check: the Commission’s public register is searchable by trading name, business name, domain or account number, and the domain proves nothing because licensed brands use both .co.uk and .com.
Margin on the card market
The second cut is the price. A booking-points market is a small over/under inside a larger match, and it is often priced with a wide margin — six, seven, even eight per cent on a quiet fixture where the card count is hard to predict. A 1.90 / 1.90 line, used as a clean example, returns a payout share of about 52.6 per cent and keeps a margin of roughly 47.4 per cent split between the two sides — a number that explains why even a “50/50” price is rarely fair. Pricing on a Premier League fixture with a clear favourite is tighter than on a lower-league game whose card rate the operator barely tracks, and the difference shows up as a half-point shift in the line, not as an obvious headline.

Offer shape
The third cut is the offer attached to the welcome, because the headline number hides the cost. A “bet £10, get £10” package breaks down into one £5 sports bet and one £5 acca, and the £10 is paid back as a free bet whose stake is not returned on a win. A “50% back” offer pays out up to £50 in free bets and up to £50 in free slot funds, with full terms. Whatever the shape, the wagering requirement is capped at 10x for GB-licensed bonuses since 19 January 2026, so the worst case is bounded — but the requirement to bet on the offer’s specific event or league is not, and that is usually where the offer’s real cost sits.
Selection depth and settlement
The fourth cut is how deep the card market runs, and how it pays out. Some run a single over/under line on the match total; some add a team line, a player-to-be-booked line, and a “yes/no on a sending-off” market. Some settle from OPTA’s feed, some from a partner feeds, some from their own desk. Settling rules differ on a red card (does it count as one card or as the two yellows that triggered it?), on a card after the final whistle (does it count?), and on a card given to a substitute on the bench (does it count?). These rules are stated in the operator’s terms — they are not universal, and the punter should know them before staking.

A shortlist that takes all four cuts seriously looks very different from one that takes the licence cut alone. The licence tells the punter they may bet; the other three tell them whether they want to.
How booking points work in football betting
The “points” in booking points are not the three points of a league win. They are the referee cards of a football match, given a numerical value the punter can bet on. The cleanest formulation is how many points is a booking in football betting — the answer is the operator’s, not the league’s.
The basic unit
A yellow card is the base unit — usually one point, sometimes called a “booking point”. A red card is worth more, usually two points, because it removes a player from the match and almost always follows a yellow or two. Some operators price a straight red (not a second yellow) as three points; some price every red as two. The punter has to check the operator’s own rule, because the difference between two and three is the difference between a tight over/under and a one-sided one on any match with an early red.
The markets
Four shapes show up in practice. The first is a match over/under on total booking points — the classic line, with the total set a half-point off a whole number so neither side can tie. The second is a team over/under on one side’s cards only, used when one team has a card-prone centre-back pairing and the other doesn’t. The third is a player-to-be-booked line, sold on individual players in big matches. The fourth is a yes/no on a sending-off, sold alongside the totals.
Settling
Settling is where card markets get expensive. A red card for two yellows counts as one red for card-tally purposes but two bookings on the card-count tally, and operators disagree. A card shown after the final whistle is sometimes counted and sometimes not. A card to a substitute who has not yet come on is sometimes counted and sometimes not. A card that is rescinded after a VAR review — increasingly common in the Premier League and the Champions League — is settled at the operator’s ruling, not at the footballing one. These are the rules the punter reads before staking, because they are the ones that decide a winning and losing bet.
Odds format
Prices are shown as fractions or decimals. A fractional 5/1 returns five pounds for every pound staked, plus the stake, so a £10 stake at 5/1 returns £60. A decimal 6.00 is the same price. The bookmaker’s margin sits inside the price on every side, and the tighter the figure, the smaller the margin.
The legality and the licence frame around booking-points betting
Booking-points betting is not a regulated market in the statute book — there is no list of permitted bets and no list of forbidden ones. An operator holds a licence for a category (remote general betting standard, the standard remote sports licence) and offers markets under its own rules inside the Gambling Act 2005 and the Commission’s Licence Conditions and Codes of Practice. That is why the regulator matters more than the rulebook: the licence is the frame, and the rest is the operator’s choice.
The licence you bet under
The Gambling Commission licenses every commercial betting operator that takes remote bets from customers in Great Britain, wherever the operator is based, since the Gambling (Licensing and Advertising) Act 2014. A Curaçao, Maltese or Gibraltar licence is not a substitute. Five licence categories cover what a punter meets online: remote general betting standard (real events), remote general betting standard (virtual events), remote general betting limited, remote pool betting, and remote betting intermediary — the last is the exchange licence. A betting exchange that lets customers back and lay bets on cards runs under the intermediary licence, not the standard one.
The Commission’s public register is searchable by business name, trading name, domain or account number, and it is the only place to verify a licence. It is also the only place to see the licence categories and any conditions attached. A licence that covers casino only does not cover sports, and a remote general betting limited licence does not cover a full sportsbook.
Who can bet, and how that is checked
The minimum age is 18. Since 7 May 2019 every customer at a GB-licensed remote operator has been verified for name, address and date of birth before they can deposit or gamble — including with a free bet. There is no anonymous play at a licensed site, and the verification runs whether the brand ends in .co.uk or .com.
Northern Ireland is outside the Gambling Act 2005 and runs under its own older law. A Great Britain licence is not a Northern Ireland licence, so the writing should reflect that — “GB-licensed”, not “UK-licensed” as a synonym for “covers the whole country”.
Credit cards and identity
Credit cards are banned for gambling in Great Britain since 14 April 2020, including credit-card-funded payments through an e-wallet. Debit cards and bank-based payments are not covered by that ban. Identity verification before the first deposit means no anonymous play, and source-of-funds questions at higher spend are normal under the money-laundering rules. There is no British named-account rule, no state list of permitted payment methods, and no rule for or against cryptocurrency deposits at licensed operators — payments are the operator’s own house rules, subject to the credit-card ban.
What the player pays in tax
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 and sits at 15% until 1 April 2027, when a new 25% remote rate takes effect inside it on most bets; bets on UK horse racing, self-service betting terminal bets, pool betting and in-person betting stay at 15%. Whether operators pass duty on through odds is not established — the punter should not assume the odds they see include duty or assume they do not.
What “unlicensed” actually costs
A bookmaker without a GB licence has none of the frame above. No GAMSTOP coverage, no Commission complaints route, no approved dispute-resolution body, no British consumer redress if funds are withheld, no 10x bonus cap, no £150 financial-vulnerability check. Enforcement runs through cease-and-desist notices, search-engine referrals and work with registrars, hosts and payment providers — disruption, not blocking. The honest framing is that an unlicensed site is the punter’s risk to take and the regulator’s job to chase, not a “legal alternative” to the licensed market.
Safer gambling around booking-points betting
Booking-points betting sits inside the wider safer-gambling frame every GB-licensed operator runs. Three pieces of that frame matter to a punter looking at card markets: the self-exclusion register, the deposit limit, and the financial-vulnerability check that flags a customer spending more than they should.
GAMSTOP
GAMSTOP is the national multi-operator online self-exclusion scheme, mandatory for online operators since 31 March 2020. A self-exclusion runs for 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. The register covers online sites and apps; betting shops use a separate service. A self-exclusion is a hard cut, not a cool-off: a punter who has registered cannot deposit or bet at any participating operator, and the operator cannot override the registration.
Deposit limits
Every licensed remote operator offers a gross deposit limit on a fixed time frame. The first phase of changes has applied since 31 October 2025, a second phase was postponed to 30 September 2026, and whether that second phase is in effect now is not established. There is no state-set deposit or loss ceiling: the limit is the customer’s choice, set inside the operator’s tools. A punter who sets a monthly limit at £200 and tries to deposit £250 at the operator’s cashier will be blocked at the limit, not at a state figure.
Vulnerability and risk checks
A financial vulnerability check (LCCP condition 3.4.4, in force since 30 August 2024) applies to licensed remote betting when a customer’s deposits minus withdrawals exceed £150 in a rolling 30 days (since 28 February 2025). The check runs against public records (bankruptcy, county court judgments), not against income and not against credit reference files. A separate round of financial risk assessments — the “affordability checks” of the press — has been announced in a staged plan by the Commission (article of 7 July 2026), with no start date. The honest framing is “announced, staged, no start date”, never “in force”.
Help
GamCare runs the National Gambling Helpline. GambleAware funds treatment and education. The NHS runs gambling clinics across the regions. Gamblers Anonymous runs peer-support meetings. None of these is a substitute for the operator’s own safer-gambling tools, and a punter who feels a market — any market, cards included — is becoming the centre of the week has somewhere to start.
The advertising frame around bonuses
The Commission does not license advertising — the ASA does, through the CAP Code (non-broadcast) and the BCAP Code (broadcast). CAP Code section 16: 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. That is a rule about who may appear in the advertisement, not about who may bet. The bonus frame that touches this page sits in the Commission’s rules: since 19 January 2026 wagering requirements on bonuses are capped at 10x, and 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.
Bet types and odds formats on booking-points markets
A booking-points market is one of several card markets in a modern football betting slip, and the punter who knows the shape of each is the one who does not confuse them on a coupon.
Singles, doubles and accumulators
A single is one selection, one outcome. A double is two selections, both needing to win. A treble is three, an accumulator or “acca” is four or more, and every leg multiplies into one combined price — so a four-fold at 2.00 / 2.00 / 2.00 / 2.00 is a 16.00 line, before the margin on each leg. A booking-points leg in an acca multiplies the same way, and the margin stacks with each leg. A Bet Builder — the same-game multi that lets a punter combine markets from one match into one line — works the same on cards as on goals.
Each-way
An each-way bet is two bets of equal stakes, so the stake doubles. The “win” half pays at the full price; the “place” half pays at a fraction of the price, set by the operator and the number of runners in the race. Each-way on a card market is unusual; each-way on a goalscorer market is common. Both double the stake the punter lays down.
System bets
A system bet spreads the stake across several combinations. A Trixie is three doubles and a treble (4 bets); a Patent is three singles, three doubles and a treble (7 bets); a Yankee is six doubles, four trebles and a four-fold (11 bets); a Lucky 15 is four singles, six doubles, four trebles and a four-fold (15 bets); a Canadian or Super Yankee is the Yankee with five singles (26 bets); a Heinz is six of each kind except singles (57 bets); a Goliath covers everything in eights and above (247 bets). The total stake is the unit stake multiplied by the number of bets — a 50p Goliath is £123.50.
Cash out and bet builder
Cash Out lets the punter settle a bet before the match is over, at a price the operator offers. The operator does not guarantee Cash Out on every market, on every bet, or at every moment. A Bet Builder or same-game multi combines markets from one event into a single line, available pre-match and in-play at some operators. Both features are part of the card-market landscape at the operators in this guide, with the operators’ own restrictions.
Spread betting on cards
Financial spread betting is regulated by the Financial Conduct Authority, not the Commission, and spread-betting losses can exceed the deposit. A spread bet on booking points is a contract on the total number of card points, settled by the actual figure rather than by a binary outcome — and the punter can lose more than they staked. It is a different product from a fixed-odds booking-points bet, and the two should not be confused in a write-up.
Odds and what they hide
Every price carries the operator’s margin. The standard way to read it is the payout share — what the bookmaker returns of every unit bet on a market. On a clean 1.90 / 1.90 line (an even-up example, not a quoted price), the payout share is 1 ÷ (1/1.90 + 1/1.90), or roughly 52.6 per cent, and the margin is 1 minus that, or about 47.4 per cent spread between the two sides. On a real three-way match-result market with prices 1.80 / 3.40 / 4.50, the payout share is lower and the margin higher — typically 5 to 8 per cent, depending on the operator and the fixture. Booking-points markets tend to sit toward the upper end of that band because the card count is harder to model than the goals.
Worked margin example
Take the 1.90 / 1.90 over/under as a clean example. The implied probability on each side is 1 / 1.90, or about 52.6 per cent, and the two sides sum to about 105.3 per cent. That oversum is the overround; the margin is 1 minus the payout share, or about 5.3 per cent — a band the punter can compare with the operator’s other markets. State the result as a band rather than a single figure: a 1.90 / 1.90 over/under keeps roughly 5.3 per cent of every unit staked, with that margin moving up or down as the line moves away from even money.
The same arithmetic on a 1.85 / 1.95 line keeps roughly 5.7 per cent; on a 1.80 / 2.00 line it keeps about 5.3 per cent again. The point is that the operator’s margin is what the punter is paying, and the headline price does not show it.
Comparing UK bookmakers on booking-points betting
The ten operators below all hold a remote general betting licence with the Gambling Commission for Great Britain and are members of GAMSTOP. The table is built on four columns — the licence detail, and what each operator’s own terms say about card markets — and the prose around it is what the table cannot carry: where each brand wins, where it loses, and which punter it suits.
| Brand | Gambling Commission remote licence | What the operator’s terms say on the subject |
|---|---|---|
| Bet Ahoy | Account 100094 — Bet Ahoy Ltd | Welcome offer split into one £5 sports bet and one £5 acca on a “bet £10, get £10” basis |
| DragonBet | Account 64908 — DragonBet Ltd | Markets cover Welsh football and rugby, racing, American football, in-play and bet builder |
| BetTom | Account 64959 — Bet Tom Limited | Sports welcome pays 50% back as a free bet up to £50, with a parallel casino offer of 50% back up to £50 |
| Smarkets | Account 39173 — Smarkets (Malta) Limited | Standard commission 2% on eligible exchange bets; 0% commission has been offered to new customers for 60 days on a minimum £10 first deposit |
| Paddy Power | Account 39439 — PPB Counterparty Services Limited | App features Bet Builder+, Popular Bet Builders, Super Sub, expanded Win More markets and player and ACCA stats |
| Bar One Racing | Account 56516 — Bar-One Racing Limited | Irish independent bookmaker, rebranded as BAR 1 Betting, with shops and racecourse sponsorships across Ireland |
| Fitzwilliam Sports | Account 48760 — SBKI Limited | Prices based on Oddschecker’s average per selection; mobile apps on Apple and Google |
| Betmaster | Account 65699 — BM Solutions GB Ltd | Operated from a Maltese parent and stated as GB-licensed under the named account |
| Lottoland | Account 38991 — EU Lotto Limited | App combines casino, lottery betting, sports betting and scratchcards; GB-licensed for customers in Great Britain |
| 888sport | Account 39028 — 888 UK Limited | Pre-match and in-play, Cash Out, Bet Builder, racing streams, BetFinder form tools, live bet feed and daily boosted odds |
What the table shows, and what it does not
Every brand on the table holds the licence that lets it take a remote bet from a customer in Great Britain. Every brand is a GAMSTOP member because every GB-licensed online operator is. The licence detail is the same shape on every row because it is the same regulator; the differences are in the trade-name, the operator’s own company and the offer each brand attaches to a new account.
What the table does not show is the depth of the card market at each brand — that detail sits in each operator’s own terms and is not part of the licence record. The column “what the operator’s terms say on the subject” is deliberately narrow on this point: it states the offer or feature research names, not a full card-market line list. A punter who wants the specific over/under on a Saturday Premier League fixture finds that at the operator’s betting slip, not at the Commission’s register.
The single most useful thing the table does is give the punter the licence account to verify. The Commission’s register is searchable by trading name, business name, domain or account number, and the account number is the cleanest key.
How to read each brand in turn
The next ten blocks look at each brand as it sits in this guide. The order shown is not a ranking — no single brand is ‘the only’ licensed one, and a place in a comparison is not a licence. Each block closes on what the brand is for, and what the next brand in the list does better.
Bet Ahoy
Bet Ahoy runs on a Bet Ahoy Ltd licence (Gambling Commission account 100094, remote general betting standard for real events), and the welcome offer is the “bet £10, get £10 in free bets” package split into one £5 sports bet and one £5 acca. The shape tells the punter two things: the headline number is half of what it looks like, and the second half is tied to an accumulator — a card market on its own would clear the £5 sports leg, not the £5 acca.
The brand sits in the small-stakes cluster: a £10 entry point is lower than most, and the package is built for a punter who wants to try the site with a small outlay. Where it loses to the larger brands is depth — Bet Ahoy does not advertise a Bet Builder, a Cash Out or a Same-Game Multi in the same way, and the card market on a busy Saturday is likely thinner than at Paddy Power or 888sport. Our take: this site is suitable for those seeking a low entry point and a GB-licensed bookmaker, but less so for the punter who wants a deep in-play card offering.
DragonBet
DragonBet runs on a DragonBet Ltd licence (Gambling Commission account 64908), and the brand’s frame is Welsh sport: Welsh football and rugby are the markets the brand names in its own app description, alongside racing, American football, in-play and bet builder. The punter who wants a market on a Welsh Premier League card count will find it more easily here than at a generalist brand; the punter who wants the deepest Champions League card menu will find more at the larger brands.
The brand sits in the niche-cluster: a regional bookmaker with a strong identity and a clear focus. The verdict: right for the Welsh-sport punter and for a card line on a Swansea or Wrexham fixture; wrong for the punter who treats the card market as one line among many on a Saturday coupon.
BetTom
BetTom runs on a Bet Tom Limited licence (Gambling Commission account 64959), and the sports welcome offer pays 50% back as a free bet of up to £50, with a parallel 50% back up to £50 in free slot funds. The headline number is the headline number — it is not a “bet £10, get £10” — and the casino parallel is the kind of mixed-product structure that has been banned under the Commission’s promotion rules since 19 January 2026, so the punter should read the current terms before claiming.
The brand sits in the casino-and-sports cluster: a sports bettor who also uses a casino wallet will find the parallel useful; a sports-only punter should ignore the casino leg. The card-market depth is not stated in the public material the same way as for Paddy Power or 888sport. Our take: a good choice for bettors who appreciate a combined sports-and-casino welcome, though pure sports punters may find the slot-funds leg unnecessary.
Smarkets
Smarkets runs on a Smarkets (Malta) Limited licence (Gambling Commission account 39173, remote betting intermediary — the exchange licence), and the standard commission on eligible exchange bets is 2%. New customers have been offered 0% commission for 60 days on a minimum £10 first deposit. Smarkets is an exchange, not a traditional bookmaker: customers back and lay bets against each other rather than against the operator, and the operator’s margin sits inside the spread between back and lay prices.
The exchange is its own kind of card market. A punter who wants to lay a card total — bet against the over — finds that at an exchange more cleanly than at a bookmaker, because the price is set by other punters. A punter who wants a traditional over/under line on a Saturday coupon is not in the right place. The verdict: right for the punter who wants to trade a card line or take the lay side; wrong for the punter who wants a traditional bookmaker’s pre-match card menu.
Paddy Power
Paddy Power runs on a PPB Counterparty Services Limited licence (Gambling Commission account 39439), and the app carries Bet Builder+, Popular Bet Builders, Super Sub (a bet that rolls over to the replacement if the selected player is subbed), player and ACCA stats, and the expanded Win More markets. Paddy Power is one of the largest GB-licensed brands and shares corporate ownership with Betfair.
The card market sits inside that wider frame — a Bet Builder leg that combines cards with goals or corners, a Super Sub that protects a player-to-be-booked selection when a player is subbed off before he can be carded, and a deep in-play menu. The verdict: right for the punter who wants a deep, feature-rich card market with a Bet Builder and a Super Sub; the natural first stop on a Saturday card coupon.
Bar One Racing
Bar One Racing runs on a Bar-One Racing Limited licence (Gambling Commission account 56516), and the brand has rebranded as BAR 1 Betting — an Irish independent bookmaker with shops across Ireland and racecourse sponsorships at Dundalk, Fairyhouse, Navan, The Curragh, Curraheen Park and Cork. The frame is racing-led.
The card market is not the brand’s main line, and the punter who wants a deep Premier League card offering is in the wrong shop. The verdict: right for the Irish-shop punter who wants a GB-licensed bookmaker with a strong racing identity; wrong for the punter whose card market is the only reason to open an account.
Fitzwilliam Sports
Fitzwilliam Sports runs on an SBKI Limited licence (Gambling Commission account 48760), and the brand’s distinguishing feature is the price: each selection is priced off Oddschecker’s average for that selection, so the brand’s card lines tend to track the wider market. Mobile apps are on Apple and Google.
The shape is the price-taker’s brand: a punter who wants the average market price on a card line without taking the headline margin at a major bookmaker finds it here. The verdict: right for the price-conscious punter who wants to track the average card line; wrong for the punter who wants a feature-led brand with a Bet Builder.
Betmaster
Betmaster runs on a BM Solutions GB Ltd licence (Gambling Commission account 65699), and the operator is registered in Malta. The frame is a GB-licensed sportsbook with a Maltese parent, and the punter’s protection is the GB licence, not the Maltese one.
The card-market depth is not stated in the public material in the same way as for Paddy Power or 888sport, and the brand does not lead the in-play card offering. The verdict: right for the punter who wants a smaller-scale GB-licensed sportsbook; wrong for the punter who wants the deepest card menu on a Saturday.
Lottoland
Lottoland runs on an EU Lotto Limited licence (Gambling Commission account 38991), and the app combines casino, lottery betting, sports betting and scratchcards. The card market is one product among four, not the brand’s main line.
The verdict: right for the punter who already uses Lottoland for lottery or casino and wants a sports wallet on the same account; wrong for the punter who treats the sportsbook as the main reason to bet.
888sport
888sport runs on an 888 UK Limited licence (Gambling Commission account 39028), and the app offers pre-match and in-play, Cash Out, Bet Builder, racing streams, BetFinder form tools, a live bet feed and daily boosted odds. The card market sits inside a full sportsbook with the standard feature set.
The verdict: right for the punter who wants a deep feature-led sportsbook with a strong card line on a Saturday; the natural counterweight to Paddy Power in this guide, with a similar feature set.
Frequently asked questions
What are booking points in betting?
Booking points are the numerical value bookmakers give to a referee’s card. A yellow card is usually one point and a red card is usually two (sometimes three for a straight red), so a market on “booking points” is a market on the running total of card values in a match, settled under the operator’s own rules. The punter backs an over/under on the total, sometimes a team line, sometimes a player-to-be-booked selection.
What is booking points in betting?
Booking points is the term for the card-tally market on a football match. The market is built and settled by the operator, not by the league, and the card value (yellow = one, red = two or three) is set in the operator’s own rules. A punter who wants to bet on cards reads the operator’s terms for that specific match before staking, because settling rules vary on red cards, on cards after the final whistle and on cards to substitutes.
How can it be checked that a bookmaker holds a Gambling Commission licence?
The Gambling Commission’s public register at the regulator’s site is searchable by trading name, business name, domain or account number, and it is the only place to verify a licence. A GB-licensed remote bookmaker shows its account number and licence categories there, alongside any conditions attached. The register is the whole test of who holds a licence, and a punter who cannot find a brand on the register should not deposit at that brand.
How is the return on a bet worked out from the stake and the odds?
The return on a winning bet is the stake multiplied by the decimal odds, so a £10 stake at 3.50 returns £35 in total — the £10 stake plus £25 of winnings. The net profit is the stake multiplied by (odds minus 1), or £25 in that case. For a combination bet the odds of the legs multiply into one combined price before the stake is applied.
What is the bookmaker’s margin and how can it be seen in the odds?
The margin is the share of every unit staked that the bookmaker keeps, and it sits inside the price on every side of a market. On a clean 1.90 / 1.90 over/under the implied probability on each side sums to about 105.3 per cent, and the margin is the oversum, or roughly 5.3 per cent. On a real three-way match result with prices 1.80 / 3.40 / 4.50 the margin is higher — typically 5 to 8 per cent on a major bookmaker’s Premier League line, depending on the fixture.
Bet types & in-play – Bookies Trust
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