Standard margin calculators only handle 2 or 3 outcomes (like a single football match). But what if you are betting on the “Winner of the Premier League” or a Horse Race with 12 runners?
This calculator allows you to add as many selections as needed. It calculates the total Overround to show you how much “juice” the bookmaker is squeezing out of these long-term markets.
Calculate margin for markets with many runners (Racing, Outrights).
Why Outright Margins are Higher
In a standard match, the margin is usually 3-5%. In “Futures” or “Outrights,” bookmakers often charge 20% to 140% margin because managing risk on 20 teams is harder.
How to Use:
- Add Selections: Click “+ Add Selection” for every team or horse in the market.
- Input Odds: Enter the decimal odds for each contender.
- Result:
- Total Overround: If this is 120%, the bookie keeps $20 for every $100 paid out.
- RTP (Payout): The percentage of money returned to players.
Frequently Asked Questions (FAQ)
What is a “Fair” margin for horse racing?
Horse racing margins are notoriously high. A “good” market might have an overround of 115-120% per race. Some bad markets (especially on heavy favorites) can exceed 130%.