Glossary
Prop firm consistency rule
Last reviewed: 16 September 2026·Tradelyze
A consistency rule caps how much of an account's profit may come from its single best trading day. Topstep's help center caps a Trading Combine best day at 55% of the Profit Target; Apex Trader Funding wants a best day under 50% of profit before a payout. Going over usually delays the pass or payout instead of failing the account.
In plain English
Think of your challenge profit as a pie cut into trading days. A consistency rule says no single slice may be bigger than a set share of the pie. If one day is too big, you are usually not thrown out. You have to keep trading until the rest of the pie grows enough.
New to this? Start with how prop firm challenges work, then prop firm rules and backtest metrics.
What is a prop firm consistency rule?
A prop firm consistency rule caps how much of an account's profit may come from its single best trading day. A prop firm, short for proprietary trading firm, sells evaluation accounts, often called challenges, and funds or pays traders who meet its rules. How prop firm challenges work covers the other rules a challenge sets. On this page the best day is the trading day with the largest profit. The rule compares that day with a bigger profit figure, such as total profit or the profit target.
Firms name the rule differently. Topstep's help center calls its Trading Combine version a Consistency Target. FTMO's Trading Objectives page calls its version the Best Day Rule. Apex Trader Funding's help center has a 50% Consistency Requirement. Apex gives the reason plainly: the rule exists “to ensure traders demonstrate steady, repeatable performance over multiple days rather than relying on a single large winning trade.”
The rule matters for your money in a way that is easy to miss. Unlike a daily loss limit, going over a consistency figure rarely ends the account. Instead, it keeps you trading longer before a pass or a payout. Every extra day is another day exposed to the loss limits, including a trailing drawdown, on an account you paid for.
How is best-day percentage calculated: share of total profit or share of the profit target?
Best-day percentage is the best day's profit divided by a larger profit figure, times 100. The firms checked for this page use three different denominators, and the choice changes the number:
- Total or net profit. Topstep's help center prints the formula “Best Day Profit ÷ Total Profit = Best Day %”. Apex Trader Funding divides by net profit since the last payout, so losing days shrink the denominator.
- The profit target. Topstep's headline rule is that the best day “must stay at or below 55% of your Profit Target.”
- Profit on winning days only. FTMO divides by Positive Days' Profit, which it defines as “the sum of closed profits and losses from all profitable trading days.”
minimum profit figure = best day's profit ÷ limit (limit as a decimal, e.g. 0.30)
The second line is the one to remember. A 30% limit needs total profit of at least 1 ÷ 0.30 = 3.33 times the best day. A $3,000 best day therefore needs $3,000 ÷ 0.30 = $10,000 of total profit before it complies.
Take a constructed ten-day run on a $50,000 account with a $3,000 profit target. That is the Profit Target Topstep's help center lists for a $50K Trading Combine, beside a recommended best day of less than $1,650. Day 3 made $1,800. Three losing days took away $500 in total. The run ended with $3,000 of net profit, and the seven winning days alone made $3,500. Figure 1 shows the days.
| Denominator | Calculation | Best-day share | Read against a firm's figure |
|---|---|---|---|
| Net profit across all ten days | $1,800 ÷ $3,000 | 60.0% | Over Topstep's 40% Express Funded payout figure and Apex Trader Funding's 50% figure |
| The profit target | $1,800 ÷ $3,000 | 60.0% | Over Topstep's 55% Trading Combine figure, so the target would rise |
| Profit on winning days only | $1,800 ÷ $3,500 | 51.4% | Over FTMO's 50% Best Day Rule, by 1.4 percentage points |
The first two rows give the same number because this run finished exactly on its target. That is not a coincidence. Topstep's own article says you can pass “as long as no single day exceeds 55% of your total profit and your Profit Target is met.” At the moment profit reaches the target, share of target and share of total profit are the same figure. They split only once profit runs past the target. Profit on winning days is never smaller than net profit, so the third denominator never gives a higher share than the first.
Under a 55% limit, the arithmetic for this run is $1,800 ÷ 0.55 = $3,272.73 of total profit. Topstep's article, retrieved 16 September 2026, still works a larger target with a different divisor: “a $1,800 best day ÷ 0.50 = a $3,600 Profit Target.” Its next example uses 0.50 too, raising the target to $4,400 after a $2,200 best day. The same article says “The old buffer was quiet padding on top of a 50% target,” so the 0.50 example may be left over from the old rule. Confirm the figure for your account with Topstep before you plan around it.
| Limit | Times the best day | $1,000 best day | $1,800 best day | Where this figure appears |
|---|---|---|---|---|
| 30% | 3.33× | $3,333.33 | $6,000.00 | Apex Trader Funding legacy accounts, share of profit since the last payout |
| 40% | 2.50× | $2,500.00 | $4,500.00 | Topstep Express Funded Account, Consistency payout path, share of total net profit |
| 50% | 2.00× | $2,000.00 | $3,600.00 | Apex Trader Funding current accounts, share of net profit; FTMO 1-Step, share of winning-day profit |
| 55% | 1.82× | $1,818.18 | $3,272.73 | Topstep Trading Combine, share of the Profit Target |
What happens if you exceed a consistency rule: failure, a raised target or a delayed payout?
At the three firms checked for this page, going over a consistency figure delays a pass or a payout rather than failing the account on the spot. Their help pages, retrieved 16 September 2026, describe three outcomes:
- A raised target. In Topstep's Trading Combine, if the best day goes over 55% of the Profit Target, “your Profit Target increases. You'll need to earn more to pass.” Topstep adds that “the remaining profit must be earned on a separate trading day, after the market close of the session in which your best day was set.”
- A delayed payout. On Apex Trader Funding's 50% requirement, “the payout request option will not be available” until the figure falls below 50%, and “The account remains active.” Topstep's Express Funded Account works the same way on its Consistency payout path: above 40%, you are not payout eligible.
- Keep trading, with no breach. FTMO says “Exceeding the Best Day limit is not treated as a rule breach.” You must keep trading until the best day is 50% or less of Positive Days' Profit.
Not being failed is not the same as being safe. Apex Trader Funding's page on its legacy Performance and Live account rules says that for those accounts, “Violating these rules could result in denied payouts or account closure.” Read the terms for your own account before assuming the mild outcome.
The real cost of a consistency rule is time. You cannot shrink a best day after it has happened, and Topstep says “Losses do not reset your best day.” The only fix is more total profit, which means more trading days. In the constructed ten-day run, a 40% limit needs $1,800 ÷ 0.40 = $4,500 of total profit, $1,500 more than the run made. Those extra days carry the same daily loss and drawdown risk as the first ten.
Check this on your own results
Before paying for a challenge, divide your backtest's best day by the firm's limit. If the total profit that demands is well past the profit target, expect a longer evaluation, and size positions for the extra days. Position sizing for prop firm challenges and Monte Carlo simulation for prop firm challenges cover that exposure.
How do consistency rules differ by firm and by phase?
Consistency rules differ by firm, by account stage and by purchase date. A phase is one stage of a prop firm program: the evaluation you pay to pass, then a funded or payout-eligible account. A consistency figure quoted without its phase can mislead in either direction. The table shows what each firm's own help pages said when read on 16 September 2026.
| Firm and phase | Limit and denominator | At the boundary | If you go over | Retrieved |
|---|---|---|---|---|
| Topstep, Trading Combine (evaluation) | Best day at or below 55% of the Profit Target; the printed formula divides by total profit | “It is not rounded, and there is no buffer.” | The Profit Target increases; the account is not failed | 16 Sep 2026 |
| Topstep, Express Funded Account, Consistency payout path | Largest single-day net profit ÷ total net profit, 40% or below | “Any result above 40% does not qualify.” | Not payout eligible; resets to $0 after a payout is requested | 16 Sep 2026 |
| Apex Trader Funding, 50% Consistency Requirement (payout requests) | Largest profitable day less than 50% of net profit since the last payout, or since the account opened | Text says “less than 50%”; the page's own example table marks exactly 50% as met | Payout request unavailable; account stays active; resets after an approved payout | 16 Sep 2026 |
| Apex Trader Funding, legacy accounts bought before 1 March 2026 (payout requests) | No single day more than 30% of profit since the last approved payout | “more than 30%” breaks it, so exactly 30% complies | Keep trading before requesting a payout; applies until the sixth payout or a move to a Live account | 16 Sep 2026 |
| Apex Trader Funding, legacy Evaluation Accounts | None: “There are no consistency rules during this phase” | Not applicable | Not applicable | 16 Sep 2026 |
| FTMO, FTMO Challenge: 1-Step and FTMO Account (1-Step) | Best day not more than 50% of Positive Days' Profit, the profit from winning days | “50% or less” complies | “not treated as a rule breach”; keep trading until the best day is 50% or less | 16 Sep 2026 |
| Other firms and account types | Not checked for this page | Not checked | Not checked | Not checked |
Three details in the table trip traders up. The first is the boundary word. Topstep's consistency article allows exactly 55%, but its own recommendations table says “Less than $1,650” on a $3,000 target. Topstep's separate Trading Combine Parameters article says the best day “should stay below 55%”, which also reads as strict. Apex Trader Funding's text says “less than 50%”, yet its own example table marks a $1,000 best day against $2,000 of profit, exactly 50%, as “Consistency Met”.
The second detail is the phase. Apex Trader Funding's legacy rules page says its evaluation accounts carry no consistency rule. This page did not confirm the evaluation rules for Apex accounts bought on or after 1 March 2026. The third detail is purchase date. Apex's Legacy Products Overview says “Legacy accounts purchased prior to March 1st, 2026, will not be affected.” Two accounts at the same firm can therefore carry different consistency figures.
Does the consistency rule reset after a payout?
At the two firms whose payout rules were checked, the consistency rule resets after a payout. Topstep's help center says of the Express Funded Account: “After a Payout is requested, your consistency calculation resets to $0 and applies only to profits earned in the new window.” Apex Trader Funding says that once a payout is approved, “The consistency calculation resets.” Its legacy 30% rule applies until the sixth payout or a move to a Live account. A reset cuts both ways. Profit from before the payout no longer dilutes a new big day, so one strong day early in the new window can hold up the next payout.
Which backtest statistic predicts a consistency problem?
The backtest statistic that predicts a consistency problem is the best day divided by total profit, built from daily profit and loss. Win rate and profit factor cannot show it, because neither says how profit is spread across days. Win rate and expectancy explains what those numbers do measure. To compute the best-day share yourself:
- Assign each closed trade to a trading day using the firm's session, not your chart's midnight. Topstep says each day's value “locks into your trading history” at 3:10 PM CT.
- Add up each day's closed profit and loss.
- Find the largest day and divide it by the firm's denominator: net profit, profit on winning days or the profit target.
The trap is the length of the backtest. Firms measure over one evaluation or one payout window, while a backtest can cover years. In a constructed example, a two-year backtest with $30,000 of net profit and a $2,400 best day shows $2,400 ÷ $30,000 = 8%. If the same $2,400 day fell in a stretch that had made $3,000, the share would be 80%.
So measure the ratio over stretches the size of the account you plan to buy. One method: pick many different starting days in the backtest. From each, add up days until profit reaches the target, then record best day ÷ profit at that point. The share of starting days where the figure is over the firm's limit shows how often the rule would have bitten. Which backtest statistic predicts which prop rule lists the matching statistic for every other rule, and the daily loss limit statistic uses the same day-by-day grouping.
Why do trend-following and outlier-driven strategies struggle with best-day caps?
A best-day cap judges the shape of a strategy's profits, not their size. A trend-following strategy is built to cut losing trades early and hold winning trades while a move lasts. When it works, much of its profit arrives on the few days a strong move pays out. Any strategy that waits for rare large moves has the same shape. Such a strategy can have healthy expectancy, the average profit per trade, and still post a best day that dwarfs every other day.
Position size does not fix a consistency problem. Trading half the size roughly halves the best day and the total together, so the ratio barely moves; only commissions and whole-contract rounding change it. The changes that do move the ratio all change the strategy. One is a daily profit stop that ends trading after a set gain. Another is taking partial profit sooner. Both can cut the large wins that pay for the losses, so re-run the backtest before trusting either.
The opposite profile passes a best-day cap easily and hides a different risk. A strategy that wins most days by small amounts has a low best-day share, but its losses can be rare and large. Why high-win-rate strategies blow up covers that trade-off, and the daily loss limit is the rule that usually catches it.
How does Tradelyze check the consistency rule?
Tradelyze checks a consistency rule only when the rule set defines one. The result appears on a row named consistency in each firm's Rule Results table. Actual is the backtest's best-day share and Limit is the rule's figure. Tradelyze sums closed-trade profit and loss for each day, placing each trade on the calendar date it closed in the exchange timezone set on the strategy. It then divides the best day by net profit across all days.
The row passes when the figure is at or below the limit, and its message reads like Best day 60.0% of total > 55.0% limit. Because losing days reduce the denominator, the figure can go above 100%. Days of +$900, −$800 and +$400 give a $900 best day against $500 of net profit, or 180%, and the message then names both numbers. If a run made no net profit, the row is not evaluated. Its Status and Actual cells show a dash, and its message says there was no profit for a best day to be a share of.
Firm presets carry figures stored when the presets were written. As reviewed on 15 September 2026, the Topstep presets check 50% and the Apex Trader Funding preset checks 30%, both as shares of net profit. Both differ from the firms' current pages. Topstep's Trading Combine now says 55% of the Profit Target, and Apex applies 50% at payout time. Apex's legacy rules page also says evaluations had no consistency rule. The Bulenox preset stores 40%, and the Elite Trader and MyFunded Futures presets store 35%; this page did not check those against the firms' sites. The FTMO presets carry no consistency rule.
To use a current figure, write a custom rule and fill in Consistency rule %, whose empty input reads “Best day as % of total profit”. Leave it blank, or enter 0, to skip the check. For Topstep's Trading Combine, 55 is a close match, because both readings agree when profit reaches the target. For FTMO's 1-Step Best Day Rule, a 50% custom rule is stricter than FTMO's whenever the run has losing days. Net profit is never larger than winning-day profit. Custom prop firm rules explains every field, and how credits work covers what a run costs.
Where Tradelyze's consistency check differs from a firm's
The whole backtest, not one window. Tradelyze divides by the net profit of the entire backtest. A long backtest can pass the row while a stretch the length of one evaluation would not. Use the stretch method under which backtest statistic predicts a consistency problem to check.
A fail, not a delay. Tradelyze marks a figure over the limit as a failed rule. Topstep's Combine would raise the target instead, and Apex Trader Funding would hold back a payout. Payout-window resets are not modeled.
Calendar days. Days split at midnight in the exchange timezone. Topstep locks each day's value at 3:10 PM CT, so trades near that time or overnight can land on a different day in Tradelyze than at Topstep.
A Qualifies badge means at least one set of settings the search tried passed every rule Tradelyze checked for that firm. What Qualifies and Not Feasible mean lists the rules Tradelyze does not check, and how to read the Rule Results table covers the other rows. If the consistency row fails, see what to do when a prop firm card reads Not Feasible. To judge the whole report, not one tile, use the pre-trade checklist. For account and credit questions, see the Learn FAQ.
Check it on your own strategy
In a Tradelyze report, the consistency rule is the consistency row of each firm's Rule Results table. Tradelyze re-runs an uploaded TradingView Pine Script strategy from your exported trade list and price data, then runs parameter optimization, walk-forward analysis, a five-check robustness score and prop firm rule checks. It does not place trades, give financial advice or guarantee a challenge pass, and it is in beta.
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Frequently asked questions about the prop firm consistency rule
What is a consistency rule in a prop firm challenge?
A consistency rule caps how much of an account's profit may come from its single best trading day. Topstep's help center calls its version a Consistency Target, FTMO's Trading Objectives page calls its version the Best Day Rule, and Apex Trader Funding has a 50% Consistency Requirement. Each divides the best day's profit by a larger profit figure and compares the result with a percentage limit.
How do I calculate my best day percentage?
Add up each trading day's closed profit and loss, find the day with the largest profit, divide it by the profit figure the firm uses, and multiply by 100. A $1,800 best day in a stretch that made $3,000 is 60%. Check the denominator: Topstep and Apex Trader Funding divide by total or net profit, while FTMO divides by the profit from winning days only.
What is Topstep's consistency target?
Topstep's help center, retrieved 16 September 2026, says a Trading Combine trader's single best day of profit must stay at or below 55% of the Profit Target, with no rounding and no buffer. On the Express Funded Account's Consistency payout path, the largest single-day net profit divided by total net profit must be 40% or below to be payout eligible.
What happens if I break Topstep's consistency target?
In the Trading Combine, Topstep's help center says the Profit Target increases, so you must earn more to pass; the account is not failed. The remaining profit must be earned on a separate trading day, after the market close of the session that set the best day. Losing days do not reset the best day, so a $1,800 best day stays $1,800.
What is the Apex Trader Funding consistency rule?
Apex's 50% Consistency Requirement page, retrieved 16 September 2026, says the largest profitable day must be less than 50% of net profit since the last payout, or since the account opened. Above that, the payout request option is unavailable but the account stays active. Legacy accounts bought before 1 March 2026 keep a 30% rule, and Apex says legacy evaluations have no consistency rule.
Does the consistency rule reset after a payout?
At the two firms checked, yes. Topstep's help center says the Express Funded Account calculation resets to $0 after a payout is requested. Apex Trader Funding says its calculation resets once a payout is approved, and only later profits count. A reset cuts both ways: old profit no longer dilutes a new big day, so one strong day early in the new window can hold up the next payout.
Does FTMO have a consistency rule?
Yes, on its 1-Step products. FTMO's Trading Objectives page, retrieved 16 September 2026, says the Best Day Rule applies to the FTMO Challenge: 1-Step and the FTMO Account (1-Step). The best day may not be more than 50% of Positive Days' Profit, the sum of results on profitable days. FTMO says exceeding it is not a rule breach; you keep trading until it is met.
How much total profit do I need to meet a 30% consistency rule?
Divide your best day by 0.30. A $1,500 best day needs at least $5,000 of total profit, which is the example Apex Trader Funding gives for its legacy 30% rule. In general, the minimum total profit is the best day divided by the limit: 3.33 times the best day at 30%, 2.5 times at 40% and 2 times at 50%.
Do losing days count in the consistency percentage?
It depends on the denominator. Apex Trader Funding uses net profit, so its page shows a $1,000 day followed by a $200 loss giving $1,000 ÷ $800 = 125%. Topstep's help center says losses do not reset the best day. FTMO's Best Day Rule divides by the profit of winning days only, so a losing day does not shrink that denominator.
Can reducing position size fix a consistency rule problem?
Not on its own. Halving position size roughly halves the best day and the total profit together, so their ratio stays about the same, apart from commissions and whole-contract rounding. The ratio falls only when other days add profit, which takes more trading days, or when the strategy's exits change how much one day can make, which needs a new backtest.
Which backtest number predicts a consistency rule problem?
Best day ÷ total profit, built from daily profit and loss over a stretch as long as one evaluation or payout window, not the whole backtest. A two-year total dilutes any single day, so the ratio looks safe. Split the backtest into stretches that each reach the profit target, compute the ratio in each, and count how often it goes over the firm's limit.
How does Tradelyze check the consistency rule?
When a rule set defines a consistency figure, Tradelyze shows a consistency row in each firm's Rule Results table. It sums closed-trade profit and loss by exit date in the strategy's exchange timezone, divides the best day by net profit across all days, losing days included, and passes the row at or below the limit. It measures the whole backtest, not one evaluation window.
Is Tradelyze's Topstep preset up to date on consistency?
Not as reviewed on 15 September 2026. Tradelyze's Topstep presets check a best day of at most 50% of net profit, while Topstep's help center now says 55% of the Profit Target for the Trading Combine. To match the current figure, create a custom rule with Consistency rule % set to 55, and compare every other limit with Topstep's current terms too.
Why can Tradelyze's consistency figure be above 100%?
Because Tradelyze divides the best day by net profit across all days, losing days included. Days of +$900, −$800 and +$400 give a $900 best day against $500 of net profit, or 180%, and the row's message then names both numbers. Apex Trader Funding's page shows the same effect: a $1,000 day and a $200 loss give 125%.
Sources
Rules change; verify with the firm
Prop firm rules change often and differ by account type and purchase date. Every firm-specific figure on this page was read on the firm's own site on 16 September 2026, and Topstep's consistency article had been modified the day before. Check the current terms for the exact account you intend to buy before paying for an evaluation.
- Topstep, Consistency at Topstep, help.topstep.com article 8284208, page modified 14 September 2026 and marked “Updated today”, retrieved 16 September 2026 — Trading Combine: “Your single best day of profit must stay at or below 55% of your Profit Target. If it exceeds that, your Profit Target increases.”; the formula “Best Day Profit ÷ Total Profit = Best Day %” and the $1,600 ÷ $3,000 = 53% example; the Best Day Recommendations table ($50K: $3,000 Profit Target, less than $1,650; $100K: $6,000, less than $3,300; $150K: $9,000, less than $4,950); passing “as long as no single day exceeds 55% of your total profit and your Profit Target is met”; “55% is a hard line. It is not rounded, and there is no buffer.”; the best day locking at 3:10 PM CT; “Losses do not reset your best day.”; remaining profit earned on a separate trading day; the leftover “Best Day ÷ 0.50 = Total Profit Needed” example; “The old buffer was quiet padding on top of a 50% target.” Express Funded Account: the choice of a Standard or Consistency payout path; “Largest Single-Day Net Profit ÷ Total Net Profit = Consistency %”; “Your Consistency % must be 40% or below to be Payout eligible. This is not rounded. Any result above 40% does not qualify.”; and the reset to $0 after a payout is requested. The same article also loads at the slug
what-is-the-consistency-target. - Topstep, Trading Combine Parameters, help.topstep.com article 8284197, page modified 10 September 2026, retrieved 16 September 2026 — the best single day “should stay below 55% of your Profit Target to avoid increasing your Consistency Target”, and a trader can pass in as few as two days.
- Apex Trader Funding, 50% Consistency Requirement, apextraderfunding.com help center, published 1 March 2026, modified 24 April 2026 (page metadata), retrieved 16 September 2026 — the requirement's stated purpose; “Your largest profitable trading day must represent less than 50% of your net profit since your last payout request, or since account inception if no payout has been made.”; the payout request option unavailable and “The account remains active.”; the reset after an approved payout; the “Highest Profit Day / 0.5” method with its $1,500 ÷ 0.5 = $3,000 example; the $1,000 and −$200 example giving 125%; and the example table that marks 50% as “Consistency Met”.
- Apex Trader Funding, Legacy 30% Consistency Rule — Windfall, apextraderfunding.com help center, modified 15 April 2026 (page metadata), retrieved 16 September 2026 — no single trading day may account for more than 30% of the profit balance at the time of a payout request; “Highest Profit Day ÷ 0.3 = Minimum Total Profit Required” with the $1,500 ÷ 0.3 = $5,000 example; the rule applies until the sixth payout or transfer to a Live Prop Trading Account.
- Apex Trader Funding, What are the Consistency Rules for Legacy PA and Funded Accounts?, apextraderfunding.com help center, modified 15 April 2026 (page metadata), retrieved 16 September 2026 — Evaluation Accounts: “There are no consistency rules during this phase”; PA and Live Accounts: “Violating these rules could result in denied payouts or account closure.”
- Apex Trader Funding, Legacy Products Overview, apextraderfunding.com help center, modified 21 July 2026 (page metadata), retrieved 16 September 2026 — “Legacy accounts purchased prior to March 1st, 2026, will not be affected.”
- FTMO, Trading Objectives, ftmo.com/en/trading-objectives, page metadata last modified 13 May 2026, retrieved 16 September 2026 — the Best Day Rule: “your Best Day does not represent more than 50% of your Positive Days' Profit”; Positive Days' Profit as “the sum of closed profits and losses from all profitable trading days”; “This rule applies to the FTMO Challenge: 1-Step as well as the FTMO Account (1-Step).”; and “Exceeding the Best Day limit is not treated as a rule breach.”
- Tradelyze implementation, reviewed 15 September 2026 — the
consistencyrule, checked only when a rule set defines one; closed-trade profit and loss grouped by exit date in the exchange timezone; the best day divided by net profit across all days, losing days included; a pass at or below the limit; the operands named in the message above 100%; a run with no net profit reported as not evaluated; the stored preset figures (Topstep 50, Apex 30, Bulenox 40, Elite Trader and MyFunded Futures 35, none on the FTMO presets); and the custom rule field Consistency rule %, where blank or 0 skips the check. - Constructed illustrations — the ten-day run in Figure 1 and its tables, the two-year $30,000 backtest, and the +$900, −$800 and +$400 days are constructed illustrations, not measured data. The minimum-profit table is arithmetic, not a firm statement.