Prop firm rules · 4 min read

The four numbers that decide if you pass

Before you pay for any evaluation, write down four numbers for your strategy. Every major prop firm rule reads one of them — and none of them reads your discipline.

The four numbers a prop firm rule set reads: win rate and payoff, signal frequency, daily P&L spread, open-profit giveback

1. Win rate and payoff ratio

A consistency cap punishes profit concentrated in a few big days. High win rate with small, even wins passes a 30–50% best-day cap without trying. Low win rate with large winners breaches it structurally — even in a profitable month.

2. Signal frequency

Minimum trading days and evaluation windows are arithmetic, not judgment. A system that fires twice a week gets about eight chances inside a 30-day window. If your edge needs rare conditions, the clock can fail you before the market does.

3. Daily P&L spread

Take your last twelve months of daily results and ask: what share of any month’s profit came from its single best day? If the answer is regularly above 40%, most consistency rule sets are structurally against you, regardless of how the year ends.

4. Open-profit giveback

On a trailing drawdown account, the floor follows your peak — on intraday variants, including unrealized profit. A strategy that lets winners run and gives half back bleeds buffer that never shows up in closed results. Measure your typical giveback per trade; that number, plus your stop, is your real unit of risk.

Match these four numbers against a specific rule set and pass/fail stops being a lottery. The full mapping — which rule reads which number, with dated examples — is in the pillar: Which prop firm rules can a systematic strategy actually pass?. To run your own numbers, start with the consistency rule calculator and the trailing drawdown visualizer. It’s also the order we build in ourselves: rule set first, then strategies whose shape fits, published as ready-made portfolios per account size.

Not financial advice.