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Free Bet Calculator

Work out the lay stake, liability and net results for a free bet.

Enter your figures to calculate automatically.

How to use it

Enter the promotional amount and decimal odds for the same selection at the bookmaker and exchange. Check the offer’s stake-return rules and use your actual exchange commission rate. Liability is the balance needed to cover the lay bet, separate from the free bet amount.

Choose SNR when the free bet stake is not returned as cash, or SR when it is. Results exclude any earlier qualifying cost. Both bets must be fully matched with compatible settlement rules. Commission assumes no other bets on the exchange market; settlement rounding may differ.

Worked example

Illustrative SNR example: a £10 free bet at back odds of 5.00, lay odds of 5.20 and 2% commission gives a £7.72 lay stake and £32.42 liability. The calculated net results are £7.58 if the bookmaker bet wins and £7.57 if the lay wins; the lower result is £7.57 after rounding.