What is Arbitrage Betting?
Arbitrage betting (also called "sure betting" or "arbing") exploits differences in odds between bookmakers. By placing bets on all outcomes across different books, you guarantee a profit regardless of the result.
When Does Arbitrage Exist?
An arbitrage opportunity exists when the sum of implied probabilities across all outcomes is less than 100%. This calculator checks this automatically — if the "Arb Margin" is negative, a true arbitrage exists.
Risks of Arbitrage Betting
While mathematically guaranteed, practical risks include: bookmakers limiting or banning accounts, odds moving before all bets are placed, stake restrictions, and slow withdrawals. Most successful arbers use 10–20 bookmaker accounts and rotate activity.