The consistency rule

The consistency rule limits how much of your total profit can come from a single trading day — commonly 30% or 40%. It stops traders from passing an evaluation or unlocking a payout on one lucky day rather than a repeatable process.

The math

Your best day must be no more than the limit × total profit. With $6,000 total profit and a 30% rule, your biggest single day can be at most 6,000 × 0.30 = $1,800. If your best day is already $2,500, you need total profit of at least 2,500 ÷ 0.30 = $8,334 for it to fall back into compliance.

Why firms use it

Prop firms are buying repeatable skill, not variance. A trader who makes 90% of their profit in one session looks a lot like someone who got lucky. Spreading gains across days demonstrates an edge the firm can keep paying out on.

How to stay compliant

You don't have to erase a big day — you just need enough profit on other days to dilute it under the percentage. The risk is not noticing until payout time. Shibiki tracks the ratio live as you trade, so a single green day never quietly puts your withdrawal at risk.

Try it: consistency rule calculator · Related: trailing drawdown