For Business

Trading Math

What Is Break-Even Win Rate

Break-even win rate is the share of trades that must win for the account to stand still, and it is set by the shape of the trade: the risk divided by the risk plus the reward. This paper shows you the sum on a beam, the line for three shapes of trade, and the line on a list of ten real trades beside the count those trades actually made.

Difficulty
Beginner
Reading time
5 min
Pages
7
Reviewed by
Saman Rahbar

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A beam in balance

Every shape of trade has a win rate at which it stands still. The 3 September 2026 plan — a stop loss 20 pips below the entry and a take profit 30 pips above, one lot, where a pip is ten dollars — wins $300 when the price reaches the target and loses $200 when it reaches the stop. Put the results on a beam: two wins, $600, balance three losses, $600, exactly. A trader who wins two trades in five with this shape ends the five where they started. Two in five is 40 per cent, and that is the break-even win rate of this shape.

The sum

The sum is the risk divided by the risk plus the reward: the stop distance over the two distances added together. Twenty over twenty plus thirty is 0.40. Worked in dollars instead — $200 over $200 plus $300 — it is the same 0.40, because the size of the trade scales both distances together. The number is fixed by the two prices on the ticket, before the trade is taken, and it is not a prediction: it says what share would have to win, not what share will.

Change the shape and the line moves. A target as far from the entry as the stop breaks even at 50 per cent: each win pays for one loss. The 3 September shape, with the target one and a half times as far, breaks even at 40. A target twice as far as the stop breaks even at 33, one win in three. The further the target sits beyond the stop, the fewer of the trades need to win for the account to stand still — and the line is the arithmetic of that, nothing more.

This paper is locked