Consistency rule
A consistency rule caps how much of an account's total profit may come from a single trading day — commonly cited between 30% and 50% — to show that results are repeatable rather than one lucky trade.
The arithmetic is a simple ratio: your best day's profit divided by your total profit must stay at or below the cap. Equivalently, total profit must reach at least the best day divided by the cap before you can pass or be paid.
Example
A challenge applies a 40% consistency rule on a $100,000 account. On Tuesday you make $3,000; your total profit so far is $6,000. Your best day is now 50% of the total, which violates the cap. At most firms this is not a breach — you keep trading until total profit reaches at least $3,000 ÷ 0.40 = $7,500, at which point Tuesday's share falls to 40% and the account is eligible again. Each new large day raises that bar in the same way.
Consistency rules appear in some challenges — more commonly one-step programs — and in funded-stage reviews, where an inconsistent profile can delay a payout rather than void it. They pair naturally with minimum trading days: one rule spreads profit across days, the other requires the days to exist at all.
In practice the rule punishes all-in behavior and rewards even pacing toward the profit target. The exact percentages, and whether a violation delays or disqualifies, differ by firm; the mechanics and edge cases are worked through in consistency rules explained.