Calculator · Prop Trading

Prop firm consistency calculator

Paste your daily profit and loss, then enter the consistency limit and the profit target from your evaluation. The prop firm consistency calculator shows the best day's share of the total, whether it passes, and how much more total profit a pass needs.

Your numbers

Hypothetical days. Losses with a minus sign. Separate with commas, spaces or new lines, without thousands separators.

Total profit

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Best day

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Best day share

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Consistency check

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Total needed to pass

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Profit target

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The working

    How the rule is measured

    A consistency rule caps how much of your profit may come from a single day. In its simplest form it divides the best day by the total profit and compares that share with a limit. Take four hypothetical days: $1,500, $800, -$400 and $1,300. The total is $3,200. The best day is $1,500, about 46.9% of the total. Against a 40% limit that fails, even with the $3,000 target already reached.

    Fixing a failed check

    A bigger total brings the share down. Divide the best day by the limit and you get the smallest total that passes: $1,500 / 0.40 = $3,750, so $550 more is needed, earned on days that each stay below $1,500 so the best day does not change. The other fix, a smaller best day, only works in advance. Traders who plan around the rule therefore cap their daily profit as well as their daily loss, and the prop firm daily loss plan covers the loss side of that plan.

    Check your firm's wording

    Firms word the rule differently. Some compare the best day with total profit, others with the profit target, and some apply the check only when you ask for a payout, and each version gives a different answer from the same set of days. Read the rule page for the account you hold. The prop firm evaluation case study follows hypothetical traders through a single rule set. End-of-day drawdown explains the trailing floor that runs alongside it. Prop firm or your own account weighs the cost of learning in each.

    Questions about this calculator

    Do losing days count toward the total?

    In the simple form of the rule, yes. The total is net profit, so a losing day lowers it and raises the best day's share. That makes a loss late in an evaluation doubly costly: it takes money off the total and pushes the consistency check further from passing. Check whether your firm measures net profit or adds up winning days only.

    Should I stop trading once I hit the profit target?

    Only when the consistency check already passes. If the best day is above the allowed share of the total, reaching the target leaves the account short of a pass, and more profitable days are needed to dilute that one day. Trading those days at small size, each well under the best day, brings the share down without adding a new best day.

    What consistency limit do prop firms use?

    It varies by firm and by account type, and firms change their rules from time to time. Enter the percentage from your own firm's rule page. A lower limit is stricter. At a hypothetical 30% limit the best day can be at most three tenths of the total, so the same best day needs a larger total before it passes.

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