Prop Firm Consistency Rule: The Formula and a Worked Example

A prop firm consistency rule says your single best day can't be more than a set percentage of your total profit. You check it with best day ÷ total profit, and if you're over the limit, the total profit you need is best day ÷ the limit. Firms use it to stop one lucky day from passing an evaluation or funding a payout.

It rarely fails an account. What it usually does is move the finish line, which is why traders who hit the profit target in three days are sometimes still trading a week later.

The formula

There are only two calculations to know:

Best-day % = best day's profit ÷ total profit
Total profit needed = best day's profit ÷ consistency limit

Total profit is net: losing days reduce it. So a red day after a big green day pushes your best-day percentage up, not down.

If you want to stay inside the rule from the first day, there is a third number worth knowing:

Daily profit cap = consistency limit × profit target

On a $3,000 target, that cap is $1,650 at 55%, $1,500 at 50%, $1,200 at 40% and $900 at 30%. Stay under it every day and the rule can't delay you.

A five-day worked example

A 50K evaluation with a $3,000 profit target. Here is the week:

On Friday the account is $300 past the target. But the best day, Tuesday, is 57.6% of the total. Here is what each common limit means for this trader:

Same week, same trades. Under a 55% rule the trader is one small green day from done; under a 30% rule they need more than another full target. Note Wednesday too: the −$300 day raised the best-day percentage from 82.6% to 95%.

And there's a catch: if a later day beats $1,900, that becomes the new best day and the required total rises again. Chasing the gap with one big day can make it worse.

How three futures firms apply it (checked October 2026)

The idea is the same everywhere, but the percentage, the stage it applies to and the penalty differ. These are taken from each firm's own help center on 5 October 2026. Rules change often, so check your firm's current page before relying on them.

Topstep

• Trading Combine: a consistency target of 55%. Topstep's wording: your single best day of profit must stay at or below 55% of your profit target, checked as best day ÷ total profit. If you go over, your profit target increases. Topstep's own example: a $1,800 best day ÷ 0.55 = $3,273 needed.
• Express Funded Account: a separate 40% consistency objective, calculated as largest single-day net profit ÷ total net profit.
• Topstep notes that 55% is a hard line: not rounded, no buffer.

Tradeify

• Select evaluation: 40%, in the evaluation only, with no rule in the funded stage.
• Growth sim funded: 35% for payouts.
• Lightning funded (bought after 12 September 2025): 20% for the first payout, 25% for the second, 30% from the third.
• Tradeify's formula: biggest end-of-day P&L ÷ consistency % = total needed. Breaking the rule doesn't stop you trading; it stops you requesting a payout until you're back inside it.

MyFundedFutures

• Rapid EOD plans: 30%. Rapid Intraday and Pro plans: 50%.
• Builder plans: no rule in the evaluation, 50% in the simulated funded stage.
• MFF states that exceeding the limit doesn't breach the account; you trade more days until you're consistent.

Other firms we track are on the prop firm rules cheat sheet, with links to their official pages. If your firm isn't there, search its help center for "consistency".

Questions to answer before you start

1. What is the limit, and is it measured against total profit or against the profit target?
2. Does it apply in the evaluation, the funded account, or both?
3. Is "a day" a calendar day or a trading session, and in which time zone does it reset?
4. Is it measured on net P&L (after fees) or gross?
5. What happens if you're over: a higher target, a delayed payout, or something else?

The answers change the maths. A rule against the target is easier to plan around than one against total profit, because the cap never moves.

Five ways to trade with a consistency rule

1. Know your daily cap before the session. Write "limit × target" at the top of your plan: $1,500 on a 50% rule with a $3,000 target.
2. Size so your normal good day sits under the cap. If your typical winner is 2R and your cap is $1,500, a risk of $250 per trade leaves room for three winners. Our guide to position size for NQ, ES and gold shows the arithmetic.
3. Decide in advance what you do when you reach the cap. Stop for the day, or only take trades that fit your plan. Deciding in the moment is where rules get broken.
4. Don't try to fix a big day with an even bigger one. As the worked example shows, a new best day raises the bar.
5. Track the percentage daily. A rule you only check on payout day is a surprise waiting to happen.

None of this is a strategy recommendation. It's how to stay inside a rule you've already agreed to.

How the consistency rule fits with your other limits

The consistency rule sits next to the drawdown and the daily loss limit, and they pull in different directions. The drawdown punishes big losing days; the consistency rule punishes big winning days. Together they reward steady, similar-sized days. If you're still learning how the floor moves, read trailing drawdown vs daily loss limit and our step-by-step plan to pass a futures prop firm challenge. Consistency is also one of the first lines checked when a payout is held back; why prop firm payouts get denied covers the others.

Checking it without a spreadsheet

For a quick check, use the free prop firm consistency rule calculator: enter your target, best day and total profit, and it shows the profit you still need and your daily cap. The prop firm drawdown calculator also has a consistency section: enter your best day, the limit and the target, and it tells you the total profit you need and the largest day that keeps you inside the rule.

To track it as you go, TJ keeps your firm's consistency limit with your daily loss limit and drawdown, updates your best-day percentage on every trade you log and warns you as you approach it. Limits are pre-filled for common programs and every value is editable, because firms change their rules. See the prop firm trading journal page.

Firm rules checked on the official help pages listed below on 5 October 2026. Always confirm with your firm's current rules. TJ is journaling software, not financial advice.