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Backtesting & Statistics

How to Measure Your Own Win Rate Honestly

An honest win rate is the trades that made money divided by all trades, scratches and hand-closed losers included, written with its count and its wobble, and never read without the average win and the average loss beside it. This paper shows you the win rate in five lines; the idea as a tally board where the missing marks are the dishonesty; the wobble of a rate near fifty percent after 5, 25, 135 and 500 trades; the example rule's real 50.4 percent on the euro in 2026 beside two other rules with the same rate and different fates; and the All History filter on your platform where the honest count starts.

Difficulty
Advanced
Reading time
5 min
Pages
8
Reviewed by
Saman Rahbar

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The win rate in five lines

Measuring your own win rate honestly starts with what it is: the trades that made money divided by all trades, and the honesty is in the word all: the scratches, the break-evens, the ones closed by hand, the ones you would rather forget, every row of the log in the bottom of the fraction. It carries a wobble, roughly the rate over the square root of the count, which for 135 trades is about four percent either way. And it is never read on its own, because a win rate says nothing without the average win and the average loss beside it. The example rule on the euro won 68 of 135 trades in 2026, 50.4 percent give or take 4.3, with wins averaging 23.5 pips and losses 21.6, where a pip is the fourth decimal place of the price.

A tally board

Picture a tally board, one chalk mark per trade, green for the winners and red for the losers, 68 and 67 for the example rule. The board only means something if every trade made a mark. The usual dishonesty is not lying about a mark; it is the trade that never got one: the scratch that felt like nothing, the loser closed by hand and mentally filed as not a real trade, the day forgotten because it was a bad one. Each missing mark comes off the bottom of the fraction, and a win rate with a light bottom is a flattering number, not a measured one.

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