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Prop firm consistency rule calculator

Many funded programs cap how much of your total profit can come from one day. This calculator shows whether your best day breaks that cap and how much more profit clears it.

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Prop firm consistency

Best day share

40.0% of profit from one day

Over your 30% limit$2,000.00 more total profit brings it under

Best day 40.0%Limit 30%

Total profit required: $8,000.00
Still to make: $2,000.00
Largest compliant day today: $1,800.00

At a 30% limit, a $2,400.00 best day needs $8,000.00 of total profit. Firms usually check this at payout, so close the gap before you request one.

Total profit is the net figure across the account, not the sum of winning days.

Consistency thresholds change without notice, so there's no firm list here. Enter the number from your own rulebook; 30% and 40% are common.

Consistency rule formula

The last line tells you how much is left. A $2,400 day against a 30% limit needs $8,000 of total profit. At $6,000 total you are at 40% and $2,000 short.

Formula

best day share   = best day ÷ total profit
compliant if     = share ≤ limit%
profit required  = best day ÷ limit%
still to make    = profit required − total profit

Worked examples at a 30% limit

Once the big day exists, only more total profit changes the ratio.

Best day	Total profit	Best-day share	Total needed	Still to make
$2,400	$6,000	40%	$8,000	$2,000
$2,400	$8,000	30%	$8,000	Inside the limit
$1,500	$6,000	25%	$5,000	Inside the limit
$3,000	$7,500	40%	$10,000	$2,500

Arithmetic only. How your firm counts a day and where it sets the limit are in its current rulebook.

Why prop firms cap your best day

To filter for repeatable trading. One huge day inside a flat month looks like luck, or one oversized position that happened to work.

The rule reads a ratio, so it improves by growing the total or by never producing the outlier.

Grow the totalMore ordinary days shrink the outlier's share. This is the only lever left once the big day has happened.Available

Avoid the outlierConsistent size day to day is what stops one day dominating. Only useful before it happens.Prevention

Trade smaller nowDoes nothing on its own: the rule reads a ratio, and a smaller day does not shrink a past one.No effect

When it is checkedAlmost always at payout request, not continuously. Fix it before you ask, not after.At payout

Staying consistent across several accounts

The rule applies per account. Accounts of different sizes trading the same contract count produce different profit shapes, and the smallest shows an outlier day first.

Per-account multipliers in Copy Trader keep the curves similar, and muting an account for a bad session avoids a large losing day that would make the next recovery day look like an outlier. Whether copying is allowed is your firm's call, so check its current rules.

Which prop firms allow copy trading

Questions

Common questions

Short answers to what traders ask first. Anything else, the Help Center has it.

What is a prop firm consistency rule?

A cap on how much of your total profit may come from a single trading day. If your best day is more than the firm's threshold (commonly around 30% or 40%) of total profit, a payout can be delayed or refused until the ratio improves.

How do I calculate the consistency rule?

Divide your best single day's profit by your total profit. If that percentage is above your firm's limit you are outside the rule. The total profit you need is your best day divided by the limit: a $2,400 day at a 30% limit needs $8,000 total.

How do I fix a consistency rule violation?

Keep trading and grow the total. Once the large day exists, only more profitable days shrink its share.

When is the consistency rule checked?

Usually when you request a payout. Check the number before you ask.

What consistency limit do prop firms use?

It varies by firm and account type; 30% to 40% is common. Thresholds change without notice, so use your own rulebook's number.

Is my data sent anywhere?

No. It runs in your browser, and your numbers stay on your device.

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