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Prop Firm Consistency Rule Calculator
Enter your daily profit and loss. The calculator works out your Profit Consistency ratio (best day / net profit) and tells you instantly whether you pass the consistency rule for the prop firm challenge you're trading — no manual math, no signup.
How profit consistency is calculated
The formula used for PC%:
PC% = (Best Day's Profit ÷ Net Profit) × 100
You pass when PC% is at or below the consistency limit your prop firm sets (commonly 20-30%, depending on the firm). Example: daily P/L of $100, $200, -$50, $100, $60 → net profit $410, best day $200 → PC% = 200 / 410 × 100 = 48.8%.
Frequently asked questions
What is a consistency rule?
A consistency rule is a condition many prop firms set that caps how much of your total net profit can come from a single best day (often 20-30%), to prevent passing a challenge with one high-risk day and staying flat the rest of the time.
How do you calculate profit consistency?
PC% = (best day's profit / net total profit) x 100. You pass when PC% is at or below the consistency limit your prop firm sets. This tool calculates it automatically from the daily P/L you enter.
What do I do if my PC% is over the limit?
Your best day is already fixed in the past — the only lever left is growing total net profit from other days so the best day's share shrinks below the limit. This tool calculates the additional net profit needed and how many days that takes at your assumed daily profit.
Which prop firms have a consistency rule?
Several prop firms, including FTMO and similar providers, apply a consistency rule on some plans, but the exact percentage varies by firm and plan. Always check the specific rule for the challenge you're trading before acting on this tool's numbers.
Track every prop firm rule from your real trades, automatically
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