Prop Firm Consistency Rule Calculator

Futures and forex prop firms use the consistency rule to filter out traders whose results come from one lucky outsized day rather than a repeatable process. The rule states that your best single day may not exceed a fixed percentage of your total profit. Whether it applies during the evaluation, to payout eligibility, or both — and at what threshold — is defined in each firm's terms, so this calculator takes the rule as an input. The compliance math is a single division:

required total profit = best day ÷ rule

Worked example with the defaults: a $1,200 best day under a 30% rule requires $1,200 ÷ 0.30 = $4,000 of total profit. Sitting at $2,500, you need $1,500 more — earned on other days — before that best day stops blocking you. Note the asymmetry: you cannot fix a consistency breach by trading less; only additional profit dilutes the outlier day.

The rule has a hard combinatorial floor: if no day may exceed X% of the total, you need at least ⌈1 / X⌉ profitable days — a 30% rule implies at least 4, a 20% rule at least 5. With your current inputs the minimum is 4 days. The practical consequence: daily profit targets should be sized as a fraction of your overall goal from day one, because a single day at half the target total forces you to grind the remainder in small pieces. Consistent daily sizing is also what the survival math prefers — the losing streak calculator shows why oversized days cut both ways, and the payout calculator translates a compliant month into actual take-home income.

Trading futures on the account? The futures position size calculator can fill in a futures plan's max loss, daily loss limit and contract cap and gives how many minis or micros fit your stop. The futures tick value page shows what one tick of ES, NQ, GC or CL is worth.