Win rate tells you how often a strategy is right, not how much it makes. It is the most quoted trading statistic and also one of the most misread, because a high win rate can hide small wins and large losses. Its real use is in combination with the risk/reward ratio, which together give expectancy.
How it’s calculated
Win rate = winning trades ÷ total closed trades × 100
Define in advance how breakeven trades are counted (most traders exclude them or count them separately) and whether fees are included.
The breakeven win rate for a given average reward-to-risk ratio R is:
Breakeven win rate = 1 ÷ (1 + R)
- R = 1 → 50%
- R = 2 → 33.3%
- R = 3 → 25%
Above that line, the strategy has a positive edge before costs; below it, it loses money over time.
Example
A trader logs 40 trades: 16 winners and 24 losers.
- Win rate = 16 ÷ 40 = 40%
- Average win = $300; average loss = $100, so R = 3
- Breakeven win rate at R = 3 is 25%, so a 40% win rate is comfortably above it.
A second trader wins 70% of the time, but averages $80 per win and $250 per loss (R = 0.32). The breakeven win rate is about 76%, so this “high win rate” strategy is losing money.
Common mistakes
- Chasing a high win rate. Tight targets and wide or absent stops raise the win rate while making losses larger than wins.
- Small samples. Ten trades say very little; streaks of five or more losses happen even to sound strategies.
- Mixing setups. Win rate by setup, such as double bottom versus bull flag, is more useful than one blended number.
- Not journaling. Without records, remembered win rates tend to be optimistic; see trading journal mistakes.
- Ignoring drawdown. Even with a positive edge, a low win rate means long losing runs; size each trade so they are survivable.
Educational content — not financial advice.
Updated