Dutching & Arbitrage Calculator
Dutching means betting on every possible outcome of an event so the profit (or loss) is the same no matter what happens. This calculator shows how much to stake on each odd — and whether an arbitrage opportunity hides inside.
Dutching & Arbitrage Calculator
Enter the odds for all possible outcomes. The calculator shows how much to stake on each bet to get the same return — and whether an arbitrage opportunity exists.
| Odd | Stake | Return | Net |
|---|---|---|---|
| 2.10 | €50.00 | €105.00 | +€5.00 |
| 2.10 | €50.00 | €105.00 | +€5.00 |
What is Dutching in betting?
Dutching splits your stake across different outcomes so the payout is identical regardless of the result. Originally from horse racing, the method works on any market with multiple possible outcomes — from football to political events.
How do you calculate Dutching stakes?
The formula is: stake_i = (total stake × (1/odd_i)) ÷ sum of all 1/odds. The calculator does this automatically. Example: 100 on odds 3.0 and 1.5 gives 33.33 and 66.67 — payout in both cases is exactly 100, i.e. 0 profit (break-even when the sum of reciprocals equals 1).
How do you spot arbitrage / a surebet?
When the sum of the reciprocals of all odds is less than 1, a surebet exists. Example: two outcomes both priced at 2.1. 1/2.1 + 1/2.1 = 0.952 < 1. A skilled bettor is guaranteed profit here. In practice such chances rarely appear at a single bookmaker; they arise from price differences between different operators.
Is a Dutching calculator legal?
Yes. The calculator itself is pure mathematics and completely legal. Executing arbitrage bets is not a criminal offence in Germany either, but most licensed bookmakers prohibit it in their terms and may limit or close accounts when they detect such a pattern.
How is Dutching different from hedge bets?
A hedge usually protects only part of the risk on an existing bet. Dutching, on the other hand, equalises the return completely — you know exactly what happens with every result. The trade-off is that with non-arbitrage odds you accept a guaranteed small loss, similar to an insurance premium.
Does Dutching work for horse racing and more than two outcomes?
Yes — the calculator supports any number of odds. Horse racing is exactly where the method was invented: instead of backing one favourite, you back multiple horses at higher odds so any winner yields the same profit.
What is overround and how does it relate to Dutching?
Overround is the bookmaker's margin: sum of the reciprocals of all odds minus 1, in percent. With an overround > 0 % you lose on average; with < 0 % a surebet exists. The calculator shows this value automatically.