The Prop Firm Consistency Rule: How to Calculate It

A prop firm consistency rule limits how much of your total profit can come from your single best day. With a 40% rule, no one day can make up more than 40% of your profit. Break it, and you usually aren't failed. You just have to keep trading until the numbers balance.

Key takeaways

• The rule compares your best day with your total profit.
• To check it, divide your best day by the rule's percentage. That's the total profit you need.
• Among futures programs we track with an evaluation rule, 40% is the most common limit, and 9 programs have no evaluation rule at all.
• Some programs only apply the rule in the evaluation, some only in the funded account, and some in both.

What is a consistency rule?

A consistency rule is a check on how evenly your profit is spread across trading days. Firms use it so that one lucky day can't pass an evaluation or fund a payout. If your best day is too large a share of your total, the firm asks you to keep trading until your other days catch up.

Most of the time, breaking it only delays you. Your evaluation stays open, or your payout request waits. That makes it very different from drawdown, which ends the account.

How do you calculate a consistency rule?

There's one formula to remember: required total profit = best day ÷ rule percentage.

Say your program has a 40% rule and a $3,000 profit target. If your best day was $1,500, you need a total of $1,500 ÷ 0.40 = $3,750 before you pass. That's $750 more than the target, because the big day was too big a share.

If your best day had been $1,200 instead, you'd need $1,200 ÷ 0.40 = $3,000. That matches the target exactly, so you'd pass on time. Keeping your best day at or below the percentage of your target is the simplest way to never think about this rule.

What consistency limits are most common?

When we checked futures programs on September 26 and 27, 2026:

• In evaluations: of 30 programs that state a rule, 8 use 40%, 7 use 50%, 3 use 30%, 3 use 45% or 55%, and 9 have no consistency rule.
• In funded accounts: of 35 programs that state a rule, 16 have none. The rest range from 15% to 50%, most often 40% or 50% (5 programs each).

A lower percentage is stricter. A 20% rule asks for at least five days of similar size, while a 50% rule only needs two. Programs without one are listed on our no consistency rule prop firms page.

Does the rule apply in the evaluation or the funded account?

It depends on the program, and the difference matters. An evaluation rule can delay your pass. A funded rule can delay your payout, which is often where traders notice it for the first time. Some firms also tie it to a payout cycle, measuring your best day against the profit since your last payout. Read both sets of rules before you buy.

How to stay inside the rule

1. Work out your daily cap before you start: profit target × rule percentage. On a $3,000 target with a 40% rule, that's $1,200.
2. Stop trading for the day once you reach it, or scale down.
3. Track your best day and total profit together, since your platform won't do it for you.

A daily profit cap also tends to improve discipline, because it stops the overtrading that often follows a big win.

Common questions

Does breaking the consistency rule fail you?

Usually not. Most firms make you keep trading until your best day is within the limit. A few treat it more strictly, so check the firm's wording.

Do losing days count?

Losing days lower your total profit, which makes your best day a larger share. So yes, they can make the rule harder to meet.

Can it block a payout?

It can delay one. See why prop firm payouts get denied for the checks to run before you request.

How we got these numbers

Figures come from each firm's published rules, reviewed by a person and dated September 26–27, 2026. Confirm current terms on the firm's site. See our methodology.