Prop-firm drawdown calculator
How much room is left before your daily loss limit and your maximum drawdown, and how many full losses at your current risk you can take before the tighter one. Works for static and trailing drawdown.
An estimate for planning only. Firms define limits differently and change their rules; your firm’s dashboard is the authority. Not financial advice.
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1<iframe src="https://vertexalgorithms.com/embed/prop-firm-drawdown-calculator/"2 title="Prop-firm drawdown calculator"3 width="100%" height="760" loading="lazy" style="border:0"></iframe>4<p><a href="https://vertexalgorithms.com/tools/prop-firm-drawdown-calculator/">Prop-firm drawdown calculator</a>5 by Vertex Algorithms</p>The two numbers that end funded accounts.
- 01
Daily loss floor
Start-of-day balance minus the daily allowance. If equity touches it, including floating losses, the account is usually breached.
- 02
Maximum loss floor
Starting balance minus the maximum allowance for static drawdown, or highest point minus the allowance for trailing drawdown.
- 03
Your real limit
Whichever floor is closer to your current equity. Size trades so that a normal losing streak never reaches it.
Static vs trailing drawdown, explained with worked numbers →
1daily_floor = day_start - daily_pct x base2max_floor = start - max_pct x start (static)3 = peak - max_pct x start (trailing)4room = equity - max(daily_floor, max_floor)5losses_left = floor(room / (risk_pct x equity))About prop-firm limits.
What is the difference between static and trailing drawdown?
A static maximum loss is measured from your starting balance and never moves. A trailing maximum loss follows your highest balance or equity upwards, so profits raise the floor. Some firms stop trailing once the floor reaches the starting balance.
Is the daily loss measured from balance or equity?
It depends on the firm. Many measure from the balance at the daily reset, some from the higher of balance and equity, and floating losses usually count. Check your firm’s rules and enter the value it uses as the start-of-day figure.
Why does the calculator suggest stopping before the limit?
Because by the time a limit is touched, spread widening and slippage on closing orders can push you past it. Stopping at about 80% of the daily allowance leaves room for that. A prop-firm EA can enforce this automatically.
Can an EA do this calculation for me?
Yes. A prop-firm guard runs this on every tick, stops new trades and flattens positions at the buffer you set. See prop-firm EA development.
Want the EA to do this on every tick?
A prop-firm guard stops new trades and closes positions at the buffer you choose, so one bad day cannot end the account.