The complete guide to arbitrage betting, value betting, and everything you need to get started.
Arbitrage betting (also called arbing or sure betting) is the practice of placing bets on all possible outcomes of a sporting event across different bookmakers, exploiting differences in odds to guarantee a profit regardless of the result. It is not gambling — it is a mathematical strategy.
The concept of arbitrage exists in all financial markets. Currency traders exploit price differences between exchanges. Stock traders buy on one market and sell on another. In sports betting, the same principle applies: when different bookmakers disagree on the probability of an outcome, a gap appears. That gap is your profit.
Arbitrage opportunities are created because bookmakers set their odds independently. Each bookmaker has its own team of odds compilers, its own customer base, and its own risk models. When one bookmaker offers higher odds than another on the opposite outcome, the combined probabilities drop below 100% — and that difference is your guaranteed return.
Bookmakers are not perfect. Arbs arise from structural and competitive factors:
Bookmakers compete for customers by offering the best odds. This competition means they sometimes overprice an outcome to attract bettors, creating a window where the other side is overpriced elsewhere.
When team news breaks (injuries, lineups, weather), some bookmakers adjust faster than others. The lag creates temporary arbs — especially common in-play.
Each bookmaker uses its own statistical models and data feeds. A UK-focused bookmaker may price a Korean basketball game differently from an Asian specialist. These independent models produce price discrepancies.
Bookmakers build a margin (overround) into their odds — typically 2–8%. Different books apply different margins to different markets. When one has a low margin on one side and another has a low margin on the opposite, an arb appears.
Betting exchanges (Betfair, Smarkets, Orbit Exchange) let users set their own odds. Free market pricing on exchanges often creates arbs against traditional bookmakers, especially on less liquid markets.
Convert decimal odds to implied probability by dividing 1 by the odds. Odds of 2.00 imply 50% (1 ÷ 2.00 = 0.50). Bookmakers set odds so implied probabilities exceed 100% — the excess is the overround. An arb exists when combined implied probabilities across different bookmakers fall below 100%.
With a £100 total stake: bet £57.61 on Player A and £42.39 on Player B. If Player A wins: £103.70. If Player B wins: £103.86. Either way, £3.70+ profit.
Our Live Feed does all of this automatically — the staking calculator shows exact amounts across Equal, Overlay, and Underlay modes.
Bet on who wins. 2-way in tennis/basketball (no draw), 3-way in football (home/draw/away). The most common arb market.
One team is given a head start or deficit. Eliminates the draw, turning 3-way into 2-way. Quarter-goal handicaps (e.g. -0.25) split your stake across two lines. If the handicap lands exactly on a whole number, your stake is refunded (a push). Very common for football and basketball arbs.
Similar to Asian Handicap but uses whole numbers only and keeps the draw as a possible outcome — making it a 3-way market. For example, Team A -1 means you need them to win by 2+ goals. If they win by exactly 1, the handicap result is a draw. European Handicaps are easier to understand but offer less flexibility. Arbs frequently form between Asian and European handicap markets at different bookmakers because they price the same underlying event differently.
Bet on the total goals, points, corners, cards, etc. being over or under a set line. A huge source of arbs, especially with alternative lines like corners and shots.
Yes/No market on whether both teams will score. Simple 2-way bet that often creates arbs when bookmakers disagree on defensive strength.
Bets on individual player performance — goals, assists, shots on target, points, rebounds. Props are a growing arb source because bookmakers price them less efficiently than main markets.
If the match is drawn, your stake is refunded. Removes the draw outcome, turning 3-way into 2-way. Often used in cross-market arbs.
Bet on the result at both half time and full time. A 9-way market where arbs can appear when bookmakers disagree on scoreline changes in the second half.
Value betting (+EV betting) is placing bets where the bookmaker's odds are higher than the true probability. Unlike arbing, you bet on one side only — where the edge exists.
The true probability is determined by sharp bookmakers and exchanges with the most accurate lines. When a soft bookmaker offers significantly higher odds than the sharp consensus, that is a value bet.
Over time, +EV bets converge toward mathematical profit. Short-term variance is normal, but the edge compounds over hundreds of bets.
Value betting typically yields higher long-term returns than arbing because the edge per bet is larger — but requires a bigger bankroll and tolerance for variance.
Our Live Feed has a dedicated Value Bets tab. Filter by bookmaker, sport, and minimum EV percentage to find mispriced bets in real time.
Bookmakers may limit or restrict your account if they detect sharp betting. To extend account life: round your stakes, avoid obviously wrong odds, bet on a mix of markets, place some recreational bets, and avoid frequent withdrawals.
Odds change constantly. By the time you place your second bet, the first may have moved. Speed matters — act on alerts quickly and check the second bookmaker first if unsure of their max stake.
If a bookmaker has made an obvious pricing mistake, they may void your bet. Avoid arbs over 10–15% ROI on standard markets — they warrant extra scrutiny.
A 5% EV edge does not mean you win every bet. Over hundreds of bets, your average return trends toward +5%. You need sufficient bankroll and discipline to ride through downswings.
Never risk more than you can afford. Keep accounts funded proportionally to how often they appear in arbs. Start with £50–100, scale up with experience. Keep reserve capital for rebalancing.
Start with 5–10. Focus on Bet365, Paddy Power, SkyBet, William Hill, Betfair, and an exchange. Take sign-up bonuses.
Distribute your bankroll across accounts. Put more into bookmakers that appear most often in arbs.
Create a free Arbonomics account for the real-time Live Feed, or join the Telegram group for mobile alerts.
Filter by your bookmakers, sports, minimum ROI, and market types. Save presets for quick switching.
Place first arbs at £5–10 per side. Get comfortable finding matches on each site, entering stakes, and confirming both bets quickly.
Increase stakes as you gain confidence. The percentage return is the same regardless of bet size. Round stakes to avoid drawing attention.