How to Calculate Max Drawdown for Prop Firms

Calculating your max drawdown takes three minutes and saves accounts. Most traders skip it, trade blind, and breach a limit they never bothered to work out. Here's the step-by-step, then the part that actually matters, turning that number into a per-trade risk limit.

Step 1: Find your two figures

Open your account terms and write down two numbers: your starting balance and your max drawdown amount (or percentage).

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A typical $50,000 account has a 5% or 6% max drawdown. At 5%, that's $2,500. At 6%, $3,000. If the firm states a percentage, multiply: $50,000 × 0.05 = $2,500.

Step 2: Calculate your floor

Subtract the drawdown from your starting balance.

$50,000 − $2,500 = $47,500 floor

That's the balance you cannot touch. If your account hits $47,500, the challenge is over. For a static account, this number is fixed for the whole evaluation. For a trailing account, recalculate it from your highest balance instead, the drawdown formula guide covers both cases.

Step 3: Check for a separate daily limit

Many firms add a daily loss limit on top of the overall drawdown, and it ends more accounts than the max drawdown does.

If your $50,000 account has a $1,250 daily loss limit, that's a second floor that resets each day. You can be nowhere near the overall $47,500 floor and still fail by dropping $1,250 in a single session. Calculate both. Respect the tighter one.

Step 4: Turn the number into a risk limit (the part that matters)

Your floor is useless until it becomes a per-trade rule. Here's the conversion.

Take your max drawdown and decide how many losing trades in a row you want to survive. Divide.

$2,500 drawdown ÷ 5 trades of room = $500 max risk per trade (1%)

That gives you five consecutive losses before a breach, enough to survive a normal bad streak. Want more safety? Divide by 10 and risk $250 (0.5%) per trade.

Most traders who breach were risking enough to survive only two or three losses. Two or three losses is a normal Tuesday.

How TradersYard makes the calculation reliable

TradersYard uses a static drawdown, so the floor you calculate on day one stays true for the whole evaluation. No trailing recalculation, no equity-based surprises. The rules state the exact drawdown and daily limit upfront, so your math is based on published figures, not guesswork.

Entry starts at £31 with a 14-day money-back guarantee. Start your evaluation, then apply the per-trade risk limit above from your first position. For sizing fundamentals, BabyPips has a free position-size lesson. To plan the full pass, see how to pass a forex prop firm challenge.