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Prop firm calculator: daily loss and max drawdown
Enter your account size and today’s numbers. See how much you can still lose before the daily limit or the overall max loss — and the equity you must stay above.
- Read-only
- Never places trades
- No password
Balance plus open trades’ profit or loss.
Optional. A static floor; leave empty to skip it.
Runs in your browser: your numbers are not saved or sent.
Three ways firms count the daily loss
The same 5 % gives a different floor depending on what it is taken of. Example: $100,000 account, 5 %, today started with a $104,000 balance and $105,000 equity (an open trade in profit).
% of the initial size
A fixed amount every day — 5 % of $100,000 is $5,000 — measured down from the balance the day started with.
$104,000 − $5,000 = floor at $99,000
% of the day’s starting balance
The amount grows and shrinks with the account: 5 % of $104,000 is $5,200.
$104,000 − $5,200 = floor at $98,800
% of the higher of balance and equity
Open profit at the reset raises the starting point: 5 % of $105,000 is $5,250, measured from $105,000.
$105,000 − $5,250 = floor at $99,750
What the calculator cannot know
- When your day resets. Firms usually use their server clock, not yours: a trade held over the reset carries its open loss into the new day.
- Whether your program uses one of these methods or its own wording. Some pause the account at the limit, some close it.
- Commissions and swaps change balance and equity, so here they count. If your firm leaves them out, add them back.
Questions
›Do open trades count toward the daily loss?
When a firm measures the limit on equity, yes: equity includes open trades’ profit or loss, so a floating loss can hit the floor before you close anything. Enter equity, not balance, in «Equity now».
›Why doesn’t the calculator fill in my firm’s numbers?
Firms word the rule differently for each program and change it. We only show a firm’s rule with the source and the date we checked it — in the prop-firm rule check. Pick the method your terms describe.
›Is my data sent anywhere?
No. The calculator runs in your browser; your numbers are not saved or sent.
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