The consistency rule is one of the most common reasons a profitable trader still cannot pass an evaluation or unlock a payout. It has nothing to do with whether you made money — only with how evenly you made it. This guide explains the maths and how to stay on the right side of it.

Educational content only, not financial advice. Confirm each firm’s exact consistency rule on its official website, as the percentage and when it applies both vary.

What the consistency rule does

A consistency rule caps how much of your total profit can come from your single best day. The goal, from the firm’s point of view, is to reward repeatable skill rather than one oversized gamble that happened to pay off.

A typical rule: no single day may account for more than 30% (or 40%, or 50%) of your total profit.

How it’s calculated

The usual formula is:

Best single day ÷ total profit = your consistency percentage

You must keep that percentage below the firm’s limit.

Example 1 — failing the rule

  • Profit target: $3,000
  • You make $2,000 on one great day, then $1,000 across other days.
  • Total profit: $3,000. Best day: $2,000.
  • $2,000 ÷ $3,000 = 67%.
  • If the limit is 30%, you have passed the profit target but failed the consistency rule. Most firms will make you keep trading until your best day is a smaller share of a larger total.

Example 2 — passing the rule

  • You make roughly $500–700 per day across six days for $3,600 total.
  • Best day: $700. $700 ÷ $3,600 = 19%.
  • Comfortably under a 30% limit.

Evaluation vs payout

This is the part traders miss: at many firms the consistency rule applies to funded-account payouts, not only the evaluation. You can pass the challenge, trade the funded account, and then find your first withdrawal is held because one day dominated your profit for the payout period.

Always check whether the rule applies to:

  • the evaluation only,
  • payouts only, or
  • both.

How to avoid breaking it

  • Size consistently. Wild swings in position size create wild swings in daily P&L.
  • Don’t stop the moment you hit target. If one big day pushed you over, keep taking normal trades to dilute that day’s share.
  • Track the ratio as you go. Divide your best day by your running total after each session.
  • Bank profit steadily on funded accounts so no single payout period is dominated by one day.

Disclaimer: Independent educational content, not affiliated with any firm and not financial advice. Some links may be affiliate links.