Pass a challenge by protecting the downside
Most traders fail prop firm challenges by breaking the daily loss or maximum drawdown rule, not by missing the target. Choose a risk per trade that lets you survive a normal losing streak.
Trades to target ≈ target % ÷ (risk % × expectancy in R)
Example: 8% target, 0.5% risk, 45% win rate at 1:2. Expectancy = 0.45 × 2 − 0.55 = 0.35 R, so about 8 ÷ (0.5 × 0.35) ≈ 46 trades.
Check your firm’s exact rules
- Some firms measure daily loss from the day’s starting balance, others from equity including open trades.
- Maximum drawdown can be static or trailing.
- Minimum trading days and news-trading rules also differ.
The estimate assumes average results. Real results vary, so leave a margin of safety.
Frequently asked questions
What risk per trade is best for a prop challenge?
Many traders use 0.25% to 1%. Lower risk takes longer but makes breaking the daily limit much less likely.
Does this include the trailing drawdown?
It uses a fixed maximum loss. If your firm uses trailing drawdown, your real room can be smaller after a winning run.