Drawdown

Drawdown measures the decline from a peak account balance to the lowest point before a new high is reached. In prop trading, drawdown is not just a performance metric — it is the single most important rule that determines whether you keep your funded account or lose it.

Every prop firm sets two drawdown limits: a daily drawdown limit (typically 4-5% of the starting balance) and a total/maximum drawdown limit (typically 8-12%). If your account equity drops below either threshold at any point — even momentarily during a volatile market move — your challenge or funded account is terminated instantly with no second chances.

There are three types of drawdown you need to understand: balance-based drawdown (calculated from your cash balance, ignoring open trades), equity-based drawdown (calculated from real-time equity including floating P&L), and trailing drawdown (where the drawdown floor moves up as your account grows but never moves back down). Each type has dramatically different implications for how you manage trades.

For example, on a $100,000 FTMO account with 5% daily drawdown, your account cannot drop below $95,000 on any given trading day. If you start the day at $102,000 (because of previous profits), your daily drawdown floor is still calculated from your starting balance of $100,000 — meaning you can lose up to $7,000 that day before hitting the limit. However, some firms like Alpha Capital Group calculate daily drawdown from the previous day's closing balance, which means your buffer changes daily.

The total drawdown limit at most firms is 10%, meaning your $100,000 account is terminated if equity ever reaches $90,000. This applies to all losses combined — both realized and unrealized. So if you have a $3,000 unrealized loss on open trades and $6,500 in previously realized losses, your total drawdown is $9,500 and you are just $500 away from account termination.

Understanding the mathematical relationship between position size, stop loss distance, and drawdown limits is critical. A trader risking 2% per trade ($2,000 on a $100K account) can sustain 2.5 consecutive losses before hitting the 5% daily limit. A trader risking 1% per trade can sustain 5 consecutive losses — giving them significantly more room for error.

Drawdown is the reason approximately 85-95% of prop firm traders fail their challenges. It is not the profit target that eliminates most traders — it is hitting the drawdown limit during a losing streak, a volatile news event, or a moment of emotional trading.

The challenge with drawdown management is that it requires thinking in probabilities. Even a profitable strategy with a 60% win rate will experience 4-5 consecutive losses roughly 2.5% of the time. On a $100,000 account with 2% risk per trade, that's a $8,000-$10,000 drawdown — enough to breach the total drawdown limit at most firms.

Firms like FTMO use equity-based daily drawdown, meaning your floating losses count against you in real-time. The5ers and some other firms use balance-based calculation, which only counts realized losses. This seemingly small difference can mean the difference between passing and failing — a trader who holds through a temporary $4,800 floating loss would breach a 5% equity-based limit but would be perfectly safe under balance-based rules.

The most successful prop traders don't just manage drawdown — they architect their entire trading approach around it. They calculate their maximum position size based on drawdown limits first, then work backward to determine their profit potential.