Tools / Consistency Rule Calculator

Prop Firm Consistency Rule Calculator

Measure your best day against the rule that applies, then see the exact profit needed to move under the limit.

Free · no signup · presets plus custom rules
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Firm & plan
Evaluation rule - being over the line delays your pass. It never fails the account. Formula: best day ÷ total net profit.
Total profit since the start of the account
Best single day
65.0%
Over the 50% limit. Your pass waits until more profit dilutes your best day.
best day vs limit50% limit
Profit to dilute
+$1,200 more
Max tomorrow
$4,000
Rule
≤ 50% · best day ÷ total net profit
Checked
at evaluation pass

Your journal already knows your best day.

One oversized win can void your payout. Connect your account once and we watch this rule on every trade, live - alongside your drawdown and daily loss.

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New to this? Read the consistency rule explainer in plain English.

What a consistency rule measures

A consistency rule limits how much of your qualifying profit can come from one day. It does not usually erase the account. During an evaluation it delays the pass; on a funded account it delays the payout until more profit dilutes the best day.

Use the correct denominator

Depending on the firm and plan, the denominator may be total profit, profit from positive days, or the evaluation profit target. Selecting the exact preset matters because the same percentage can describe a different rule.

The fix is dilution, not another giant day

You cannot shrink a day that already happened. You can only make it a smaller share of a larger total. The calculator returns the additional profit required and the largest next day that will not create a new consistency problem.

Frequently asked questions

What is a prop-firm consistency rule?
It compares your best day with a defined profit base to prevent one unusually large day from accounting for too much of the result.
What happens when I am over the limit?
The trade still counts. An evaluation pass or payout usually waits until more profit reduces the percentage. Check the exact firm's current rule.
How is the required profit calculated?
For a total-profit rule, divide the best day by the allowed percentage to get the required total, then subtract current profit.
Do I need a TradeDNA account?
No. The calculator is free and standalone. A TradeDNA account watches the applicable rule against your imported trading activity.
Prop Firm Consistency Rule Calculator - Free Tool | TradeDNA