Consistency Rule Calculator
Two checks every funded trader eventually needs: whether your best day breaks the firm’s consistency threshold — and what losing streak your win rate mathematically owes you.
| Streak length | Probability within horizon |
|---|
The formula: how much more profit your best day needs
The rule itself: best day ÷ total profit ≤ threshold. Rearranged into the number you actually need: required total profit = best day ÷ threshold. Subtract what you already have and you know the gap.
Total profit needed for a given best day to pass:
| best day | 20% rule | 30% rule | 40% rule | 50% rule |
|---|---|---|---|---|
| $1,000 | $5,000 | $3,334 | $2,500 | $2,000 |
| $2,000 | $10,000 | $6,667 | $5,000 | $4,000 |
| $3,000 | $15,000 | $10,000 | $7,500 | $6,000 |
Example: a $1,200 best day under a 40% rule needs $3,000 of total profit. The same day under a 20% rule needs $6,000.
What to do with the number depends on how your account applies the rule. Under a strict check, made at the moment you hit the target, a large best day can fail an otherwise successful evaluation. Under a keep-trading rule, the gap is simply how much more ordinary trading you need. Why the best day is the one that catches people, and what the extra days actually cost, is in why traders fail the consistency rule; thresholds by firm and phase are in the consistency rule explained.
How the consistency calculation works
The rule is evaluated at a checkpoint — passing the evaluation or requesting a payout, depending on the firm — not trade by trade. Three numbers decide it: total accumulated profit, your single best day, and the firm's percentage threshold.
Best day ÷ total profit ≤ threshold. That's the whole rule. It rearranges into the number people actually need: required total = best day ÷ threshold. A $1,200 best day at a 40% threshold needs $3,000 total; the same day at 20% needs $6,000. Nothing about the best day itself is a violation — the rule waits, and either your other days catch up or they don't.
Two details catch people. At most firms the cap counts profitable days only, but a few measure against gross winning-day profit rather than net — read the exact wording for your firm. And the threshold can differ between the evaluation and the funded stage of the same account, so passing under one number doesn't mean withdrawing under it.
A losing streak is your win rate doing what it said it would
The streak module exists because most traders treat a run of losses as evidence something broke, when it's usually the arithmetic arriving on schedule.
At a 40% win rate, the chance of at least one run of five straight losses inside 100 trades is close to certain, and runs of seven or eight are ordinary over a quarter. At 55%, five in a row still shows up in most 100-trade samples. The streak length that should worry you grows only slowly with win rate — which is why "I lost six in a row, the system is dead" is almost never a conclusion the data supports at normal sample sizes.
The practical use runs the other way: put your win rate and monthly trade count in, read off the streak the math expects, and size so that streak fits inside your drawdown with room to spare. The daily loss limit checker converts the same idea into a per-session position size.
FAQ
How do I calculate the consistency rule?
What losing streak should I expect at a 40% win rate?
Which prop firms have no consistency rule?
A losing streak is not a signal — it is a property of the win rate. Sizing that survives the expected streak is what separates accounts that reach payout from accounts that reach the drawdown floor; the same arithmetic drives the daily loss limit sizing checker. Firm thresholds change often — the current firm-by-firm picture is in prop firms without a consistency rule, the mechanics and the Apex two-rule case in the consistency rule, explained, and all our calculators live under tools.
Consistency thresholds by firm and stage (September 2026)
Every preset above, with the stage it applies to. Where a firm has no rule at a stage it is not listed: FTMO 2-Step, BrightFunded, The5ers, Tradeify Select funded, TradeDay Quick Pay funded, Bulenox Qualification, Apex evaluation and others carry no consistency rule at that stage. Full detail on each rules card and on the consistency table for 24 firms.