Betting Calculator


Deducting commission

Betting exchanges charge commission on your net profit whereas traditional bookmakers do not because their commission has already been included in the calculation of the odds. So in order to do 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.


deducting commission - effective back odds formula deducting commission - effective lay odds formula
oBE  - effective back odds
oB   - back odds offered on the exchange
c    - commission charged (as a fraction)
oLE  - effective lay odds
oL   - lay odds offered on the exchange


Please fill the following fields:
Type of odds: back
← choose back or lay odds
Odds value: ← the odds (in decimal form) offered on the exchange
Commission: % ← the commission charged by the exchange