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Consistency Rule Calculator

Check whether your best day is within a prop firm's consistency limit, and find the minimum total profit you need before a payout is allowed.

Your numbers

consistency = best_day / total_profit × 100 · must be ≤ threshold

Where you stand

Your best day is—
Status—
Min total profit to comply—
More profit still needed—
Max a single day may be (at this total)—
Type your numbers.

How it works

What this calculator does

Many prop firms enforce a consistency rule: no single day's profit may exceed a set share of your total profit. This tool checks whether your best day is compliant and — given that best day — computes the minimum total net profit you need before a payout is allowed.

The formula

You're compliant when:

(best day profit / total net profit) × 100 ≤ threshold

Common thresholds are 20–40%. Rearranged, the minimum total profit you must reach is:

min total profit = best day profit / threshold

Worked example

Your best day made $1,000 and the firm's consistency threshold is 40%. Your best day can be at most 40% of the total, so 1,000 / 0.40 = $2,500 in total net profit is required before you qualify. If you've only made $1,800 so far, that one day is 56% of profits — over the limit — and you'd need more profitable days to dilute it.

What it deliberately does not do

The consistency rule does not blow your account — it freezes payouts until you comply. Thresholds and exact definitions (gross vs net, which days count) vary by firm, so confirm the rule you're under. This is a planning estimate for education, not investment advice.

Frequently asked questions

What is the prop firm consistency rule?
It caps how much of your total profit can come from a single day. If your best day exceeds the threshold (often 20–40%), the firm holds your payout until more profitable days dilute that share. It doesn't fail the account, it freezes withdrawals.
How do I calculate the minimum profit to meet the consistency rule?
Divide your best day by the threshold: best day / threshold. A $1,000 best day under a 40% rule needs 1,000 / 0.40 = $2,500 total before you can withdraw.
Does breaking the consistency rule blow my account?
No. Unlike a drawdown breach, it freezes your payout rather than ending the account. You keep trading and bring your best-day percentage back under the limit, then request the payout again.
How do I avoid one day being too big?
Don't load all your risk into a single session. Spreading profit across more days keeps any one day below the threshold. If a day runs hot, trade smaller afterward and let more green days dilute it.
Is the consistency threshold the same at every firm?
No — it ranges roughly 20–40%, and some firms use a 'best day' variant or none at all. Definitions (gross vs net, which days count) also differ, so check your firm's rule. This is an estimate for education, not investment advice.

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Information tool only. Every result is deterministic arithmetic (for the simulator, a probability estimate) from the numbers you enter. No live data, no account connection, nothing stored. This is not investment, trading, tax, or financial advice — verify against your own broker or prop firm before acting.
Disclosure. Some outbound links may be affiliate or partner links; they never change how a tool computes.
Position Math · updated 2026-06-27 · all calculators
Information tool only — not investment, trading, tax, or financial advice. All computation runs in your browser.