Dutching calculator

Rounding your stakes

Bookmakers often only take whole pounds or 10p steps, so you can round the stakes. The calculator then shows the profit for each selection, which will differ by a few pence.

Add up to ten selections. Every selection you add lowers the profit if one wins, and raises the chance that one of them does.

What dutching means

Say you fancy three horses in a race but can't pick between them. Instead of three equal stakes, you stake more on the shorter prices and less on the longer ones, so whichever wins pays the same.

The stake on each selection is your total stake times its implied chance, divided by the combined implied chance of all of them.

A worked dutching example

The three prices add up to a 59.3% implied chance. If any of them wins you're £68.67 up. If none of them wins you lose the full £100.

Dutching doesn't create value

Dutching changes how often you win, not whether you win on average. If each price includes the bookmaker's margin, the dutch carries that margin too. It only pays off over time when every selection in the dutch is better than its price.

If you dutch every runner, you're betting on the whole race. The implied chances then add up to more than 100%, and you lose the margin for certain. The exception is an arb, where the best prices across bookmakers add up to less than 100%.

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