This is arithmetic on the numbers you type: general information, not financial advice. It does not know your firm's rules, read your account or enforce anything — only your firm's own terms decide whether you comply, and firms measure “a day” and “profit” differently. See the risk disclaimer.
Two traders finish an evaluation nine thousand dollars up. One made it across six weeks. The other made eight thousand of it on a single afternoon around a data release. The rule exists to tell those two apart, because only one of them has shown something a firm can rely on repeating.
Best day ÷ total profit
$2,400 of $6,000 is 40%. Under a 50% limit that passes; under a 40% payout threshold it sits exactly on the line.
Total profit × limit
At $6,000 and a 50% limit, the largest day the account can carry is $3,000. Every further profitable day raises that ceiling.
Best day ÷ limit − total profit
An oversized day is not fatal: keep trading and the total grows until the same day is back inside the percentage. That figure is what the calculator returns.
Firms apply consistency at different moments, against different denominators, with different consequences. Two published examples, quoted from the firms’ own pages and checked on 22 September 2026:
Applies it twice. In the Trading Combine, the single best day of profit must stay at or below 55% of the profit target — and exceeding it raises the target rather than failing the account. On an Express Funded Account a 40% threshold applies at payout.
Applies a 50% requirement at the payout request: the best day must not exceed half of total profit at the time you ask to be paid.
Some firms measure against the profit target, some against profit so far, and some only when you request a payout. Same percentage, different arithmetic. Put your firm’s number in the field above, and use the target field when the rule is written against a target.
It depends on the firm and on where the rule sits. Topstep’s Combine version raises the profit target instead of failing the account; a payout-stage rule like Apex’s blocks or reduces the payout until the spread of profit changes. Your own terms are the only authority on which applies to you.
The firm’s trading day, on the firm’s clock, which is often not the calendar day where you live. FTMO, for example, resets its daily measure at 00:00 CE(S)T. If you trade an evening session, the day your trade belongs to may not be the day you think.
Where the rule is measured against profit so far, yes: the denominator grows, so the same day is a smaller share of it. That is the "profit needed to comply" figure above. Where it is measured against a fixed target, more profit does not move the denominator, and only the passage of further qualifying days helps.
No. It has no connection to any firm, reads nothing, and enforces nothing. You type three numbers and it does the division. TradingSocial does not read or enforce any firm’s rule set either.
Because a funded account is a bet on repeatability. A profit made once, in one position, on one release, tells a firm very little about the next month. A rule of this kind is how they price that uncertainty before handing over a larger account.
On its rules or objectives page, usually under consistency, scaling or payout. If the page does not say what the percentage is measured against, or when it is applied, that is worth asking support before you need the answer rather than after.
TradingSocial journals each trade against the account it belongs to, keeps evaluation accounts separate from your live record, and rolls the week up so a day that got away from you is visible while it still matters. Free for 14 days of Pro — a card starts the trial, and cancelling before it ends costs nothing.
