I passed my first funded challenge with a week to spare and felt unstoppable. Then I requested my first payout and got a polite email instead of money. My best day had made up 41% of my total profit, and the firm’s consistency rule capped it at 30%. The profit was real. It just was not “consistent” enough to withdraw yet.
In this article
Nobody had explained that rule to me in plain language, so I built the Prop Firm Consistency Rule Calculator above. Enter your total profit, your biggest day and your firm’s limit. It tells you whether you pass, and exactly how much ordinary-day profit you need to dilute the big one.
What a consistency rule actually measures
A consistency rule asks one question: did you earn this like a trader, or like a lottery winner? The usual version says your best single day cannot exceed a fixed share of your total profit, often 30%. Some firms compare your best day to your average day instead, which is stricter in its own way. Both exist for the same reason. Prop firms pay out of real money, and they want proof your edge repeats.
Most of the time this rule only bites at payout stage. Your account is not failed. Your money is not gone. You simply cannot withdraw until the numbers balance. Read prop firm payout rules and drawdown alongside this, because the consistency clause usually hides in the payout section of the rulebook, not the challenge section.
The best-day maths in one line
The whole rule reduces to a fraction. Here is the version that compares best day to total profit:
If that share sits above the limit, you can rearrange the same maths to find the total profit that would bring you back inside it:
| Variable | What it is | Example |
|---|---|---|
| Best-Day Profit | Your biggest closed day, in dollars | $2,500 |
| Total Profit | Everything you have made on the account | $8,000 |
| Limit as decimal | The firm’s cap divided by 100 | 0.30 |
| Required Total | The profit that makes the best day exactly 30% | $8,333.33 |
| Extra Profit Needed | The gap to close on ordinary days | $333.33 |
That is the calculator’s job. You are not guessing whether you pass. You are measuring the exact distance.
What a fail actually costs you
Here is the part I wish someone had told me: a consistency fail is a delay, not a death sentence. You keep the account and keep trading. The payout waits. How painful that delay is depends entirely on how far off you are, so look at how fast the gap grows when the total is small:
| Total profit | Best-day share (30% limit) | Verdict | Extra profit needed |
|---|---|---|---|
| $5,000 | 50.0% | FAIL | $3,333.33 |
| $8,000 | 31.25% | FAIL | $333.33 |
| $10,000 | 25.0% | PASS | $0 |
| $12,000 | 20.8% | PASS | $0 |
The same $2,500 day is a disaster at $5,000 total and a footnote at $12,000. The lesson I took from this: early in an account, one big winner is expensive in consistency terms. It is not that big wins are bad. It is that they need a body of ordinary profit behind them.
How I dilute a big day without forcing trades
My first instinct was to “fix it fast” by trading bigger. Terrible idea. Bigger trades near a limit create bigger best days, and the target moves with you. What actually works is boring.
I keep my normal risk percentage and let ordinary days stack up. At my usual pace of about $150 a day, that $333 gap from the example closes in two or three normal sessions. No heroics. I also stop myself from doing the opposite: shrinking risk to near zero out of fear, which turns the dilution into a month of nothing. The plan is the same plan that passed the challenge. I just run it longer.
And if the day goes badly instead, a drawdown recovery gain calculator shows what it costs to climb back, and the Max Daily Drawdown Calculator keeps the floor in sight while I grind.
Using the Prop Firm Consistency Rule Calculator step by step
Fill the three fields at the top of this page, then press Calculate.
| Input field | What to enter | Sample figure |
|---|---|---|
| Total profit so far ($) | Your current profit on the account | 8000 |
| Best single-day profit ($) | Your biggest closed day | 2500 |
| Best-day limit (%) | The cap from your firm’s rulebook | 30 |
The results show your best-day share, the limit, the extra profit needed and the new total required. The bar shows your share against the limit at a glance, and the status line gives you the verdict in words. Everything runs in your browser and nothing is stored.
Questions traders ask about the consistency rule
What is a prop firm consistency rule?
It is a rule that caps how much of your profit can come from a single day, usually around 30% of total profit. It exists so firms pay traders with repeatable edges instead of one lucky trade. You will usually meet it at payout stage, not during the challenge itself.
I failed the consistency check. Is my account gone?
No. On almost every firm a consistency fail just blocks the payout, not the account. You keep trading, build ordinary-day profit until the maths passes, and request again. The calculator above shows exactly how much more profit you need.
Does the rule use best day or average day?
It depends on the firm. The common version compares your best day to total profit. A stricter version says no single day can exceed a multiple of your average day. Always check your own rulebook, because the maths and the fix are different for each.
How do I fix a failed consistency rule without revenge trading?
Keep your normal risk and let small days accumulate. Do not size up to close the gap faster, because bigger winners raise your best day too and move the target. Two or three ordinary sessions usually fix a small gap like the $333 in the example.
Does the consistency clock reset after a payout?
Often yes, which is why some traders plan their payouts around it. A fresh payout cycle usually starts a fresh measurement window, so one huge day right after a payout has more room to breathe. Confirm the window in your firm’s rules before planning around it.
Where do I find my firm’s exact limit?
In the payout or “scaling” section of the rulebook, rarely in the challenge rules. A neutral overview of how firms frame their rules is on the FTMO trading rules page, and the Investopedia risk management guide explains why firms care about consistency in the first place.
