Find arbitrage opportunities and calculate guaranteed profit
Find guaranteed profit opportunities
Guaranteed profit opportunity
| Outcome | Sportsbook | Odds | Stake | Payout |
|---|---|---|---|---|
| Outcome 1 | Book A | +130 | $1,137 | |
| Outcome 2 | Book B | +125 | $1,137 | |
| Total | $1,000 | $1,137 | ||
Sample arbitrage scenarios
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Understanding the mathematics
Arbitrage exists when the sum of implied probabilities across all outcomes is less than 100%. This creates a mathematical edge where betting all outcomes guarantees profit.
Key concepts at a glance
Arbitrage exists when total implied probability < 100%. For 2-way: if odds are 2.10 and 2.10, implied = 47.6% + 47.6% = 95.2%. Since < 100%, a $1000 stake split proportionally guarantees profit. Formula: Stake = (Total × (1/Odds)) / Sum(1/Odds).
Important concepts to understand
Common questions about arbitrage betting
Arbitrage betting (arbing) exploits differences in odds between sportsbooks to guarantee profit. By betting on all possible outcomes at different books, you can lock in a positive return regardless of result. It requires odds that collectively imply less than 100% probability.
Compare odds across multiple sportsbooks for the same event. Calculate total implied probability - if it's under 100%, an arb exists. Professional arbers use scanning software like OddsJam, RebelBetting, or BetBurger. Manual arbing is slow and opportunities disappear quickly.
Arbing extracts guaranteed profit from sportsbooks without risk. Books identify arbers through betting patterns: always taking the best price, betting on unpopular markets, unusual stake sizes, and betting immediately when odds move. Most sharp books will limit winning accounts.
Yes, arbitrage betting is legal in most jurisdictions. It's not illegal to place bets at multiple sportsbooks or to shop for the best odds. However, sportsbooks can refuse service or limit accounts, and their terms of service may prohibit bonus abuse related to arbing.
Three-way arbitrage applies to markets with three outcomes (e.g., soccer: home win, draw, away win). The same principle applies - if total implied probability is under 100%, you can bet all three outcomes proportionally for guaranteed profit. Three-way arbs are less common but can have larger margins.
Main risks include: 1) Odds changing before all bets are placed, 2) Bet limits preventing full stake, 3) Account restrictions/bans, 4) Errors in calculating stakes, 5) Voided bets (canceled games, etc.). Execution speed and accuracy are critical.