Tools
Prop Firm Consistency Rule Calculator
Enter your daily P&L and your firm's consistency percentage. You'll see what share of your profit your best day makes up, whether you're inside the limit, how much more profit you need if you're not, and the largest day you can have at your current total.
Consistency rule calculator
Enter your firm's own percentage
- Result
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- Best day
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- Total profit
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- Best-day share
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- Total profit needed
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- Extra profit needed
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- Max best day at current total
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- Max P&L for today
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- Best-day threshold
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- Profit target after best day
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Bars: daily P&L, best day highlighted. Dashed line: the largest best day the rule allows.
Consistency rules vary by firm, plan and phase, and change. This checks the arithmetic of the rule you enter; your firm's calculation decides.
What is a consistency rule?
A consistency rule stops one big day from carrying an evaluation or payout. Firms word it in two main ways, and the maths differs:
Type A: best day as a share of total profit "No single day may be more than X% of your total profit." You check it with:
Best-day share = best day ÷ total profit × 100
If that is above X%, you need more total profit (from other days) before you qualify:
Total profit needed = best day ÷ (X ÷ 100) Extra profit needed = total needed − current total
Example, 30% rule: best day $1,000 → you need $1,000 ÷ 0.30 = $3,333.33 total. If you're on $1,800, you need another $1,533.33.
Type B: best day against the profit target "Keep your best day below X% of the profit target." Here the threshold is fixed before you start:
Best-day threshold = profit target × X ÷ 100
If you exceed it, new profit target = best day ÷ (X ÷ 100)
Topstep's Trading Combine combines both views. Its formula is "Best Day Profit ÷ Total Profit = Best Day %", it must be at or below 55%, and its best-day recommendation on a 50K ($3,000 target) is "Less than $1,650." If your best day goes over, "Best Day ÷ 0.55 = Total Profit Needed": an $1,800 best day makes the target $3,273. Topstep also notes that "Losses do not reset your best day," and that extra profit earned the same session adds to that best day. (Topstep: Consistency at Topstep, checked 14 Oct 2026)
Other firms use a plain Type A rule. LucidFlex evaluations, for example, use "Largest Single Day Profit / Account Profit = Consistency Percentage" with a 50% limit (Lucid), and MyFundedFutures' 50K Flex plan lists a 50% consistency rule in the evaluation stage only (MFFU).
Net profit or winning days only?
Firms also differ on the denominator:
- Net profit: losing days reduce the total, which makes the rule harder to meet.
- Profitable days only: losses are ignored in the denominator.
Same numbers, different answers. Daily P&L of +$1,000, +$400, −$200, +$600: - Net total = $1,800 → best day = 55.6% - Winning-days total = $2,000 → best day = 50.0%
The calculator has a toggle for both. Some firms also apply the rule per trade rather than per day, or only at payout and not in the evaluation; read your firm's wording.
Do all firms have one?
No, and it changes by plan. For example, Apex lists consistency as "Not Applied" in its EOD and Intraday evaluations and says consistency is "introduced later in the Performance Account phase" (Apex, checked 14 Oct 2026). Because these terms change, we don't publish a "no consistency rule" list here. Check the firm's rules page on the day you buy.
How to stay inside it
- Know your max day before the session. Max best day at current total = total × X%. Under a Type A rule, a new best day also adds to the total, so the true ceiling for today's P&L p (if it becomes your best day) is p ≤ X% × (total + p), i.e. p ≤ total × X ÷ (100 − X). On $1,800 total with a 30% rule that's $771.43.
- Use a daily profit stop. Stop trading for the day when you reach it.
- Re-check after payouts. Totals often reset.
Questions people ask
What is the consistency rule in prop trading?
A rule limiting how much of your profit can come from one day (or one trade), so you can't pass or get paid on a single outsized session.
How is the consistency rule calculated?
Usually best day ÷ total profit. If the rule is 40% and your best day is $800, you need at least $2,000 total. Some firms also express it against the profit target (Topstep: best day under 55% of the target, or the target rises to best day ÷ 0.55).
What happens if I break the consistency rule?
Typically nothing is "failed"; you just need more profit (or more days) before you can pass or request a payout. Check your firm's wording.
Do losing days count?
Depends on the firm. On a net-profit basis, losing days lower your total and push your best-day share up.
Does copy trading affect the consistency rule?
The rule is applied per account. A copier doesn't change the maths, but every follower has its big day at the same time. See consistency rules and trade copying.
Which prop firms have no consistency rule?
It varies by plan and changes often. Check each firm's current rules page on the day you buy.
Sources
- Topstep: Consistency at Topstep (55% Combine target, formula, $1,800 example; XFA 40% Consistency path)
- Lucid: LucidFlex Consistency Percentage
- MFFU: Flex Plan $50,000
- Apex: Intraday Trailing Drawdown Evaluations (consistency not applied in evaluation)
- Edgeable: Prop firm consistency rules and trade copying
Stop copying for the day when you hit your number.
Edgeable's group guardrails include a max daily profit setting that stops copying once profit reaches the amount you set, and the Journal shows realised P&L by day per account. Set it from your firm's rule and each account's total. Runs in the cloud. See guardrails.