Calculate 2-way or 3-way arbitrage across bookmakers, exchanges, Polymarket and Kalshi. You can also calculate a separate Back vs Lay hedge.
For Back/Lay, the amount entered as the Back Stake is your total budget.
For exchange Back bets, you can also enter the Back Commission so the calculator accounts for the commission charged on your winnings.
Enter the amount you are actually staking on the Back Bet. This is your total budget. The required Lay Stake and Lay Liability are calculated automatically.