Betting Calculator

Deducting commission charged by a betting exchange

Betting exchanges charge commission on your net winnings on a market, whereas traditional bookmakers do not because their commission has already been included in the calculation of the odds. So in order to make a comparison between the back odds offered on the exchange and a bookmaker's odds, you have to deduct the commission. This calculator performs that task for you.

The commission charged by betting exchanges is between 2 and 8%, but when choosing a betting exchange, you should consider not only its commission rate but also the liquidity of its markets.

Formulas for commission deduction

deducting commission - effective back odds formula
deducting commission - effective lay odds formula


The odds in the formulas are in decimal format.


Calculator deducting commission
Type of odds:
Choose back or lay odds!
Required field
Odds value:
Enter the odds (in decimal format) offered on the exchange!
Required field
Enter the commission charged by the exchange!

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