Drawdown is one of the most important risk metrics in trading, and one of the most misunderstood. In plain terms, it measures how far your account has fallen from a previous high point. Understanding it is essential for managing risk and, in particular, for passing and keeping a prop firm account.
The short answer
Drawdown is the decline from a peak in your account balance (or equity) to a subsequent trough, usually expressed as a percentage. If your account grows to $10,000 and then falls to $8,500 before recovering, that's a 15% drawdown. It's a measure of pain and risk, not just a number — it reflects the worst stretch your account has been through.
How drawdown is measured
There are a few variations you'll encounter:
- Peak-to-trough drawdown — the standard definition: the largest drop from a high-water mark to a later low.
- Maximum drawdown — the single biggest peak-to-trough decline over a period. Often used to describe a strategy's worst historical stretch.
- Daily drawdown — how much the account has fallen within one trading day.
The distinction matters because a strategy with a high return but a brutal maximum drawdown may be unusable in practice — most traders can't psychologically or financially survive the bad stretch.
Why deep drawdowns are so dangerous
The mathematics of recovery is unforgiving:
- Lose 10% → need +11% to recover
- Lose 25% → need +33%
- Lose 50% → need +100%
- Lose 75% → need +300%
This asymmetry is the single most important reason to keep drawdowns shallow. You can explore your own numbers with our Drawdown Recovery Calculator, and the Risk Management Basics guide explains how sizing keeps drawdowns contained.
A practical example
Suppose you risk 2% per trade and hit a run of six losses — not unusual even for a good strategy. That's roughly an 11–12% drawdown, requiring about a 13% gain to recover. Now imagine you'd been risking 5% per trade: the same six-loss streak is a ~26% drawdown needing a ~35% gain to recover. Same strategy, same losing streak — but position sizing turned a survivable dip into a serious hole.
Drawdown in prop firm challenges
Proprietary trading firms enforce drawdown as a hard rule, and breaching it ends the account:
- Daily loss limit — the most common cause of failed challenges.
- Maximum/overall drawdown — static (from starting balance) or trailing (from your peak).
A trailing drawdown is much harder than a static one, because the loss limit rises as you profit. Always read which type a firm uses before paying for a challenge — see What is a prop firm? and our prop firm reviews. The Prop Challenge Planner helps you map risk against a firm's specific limits.
How to keep drawdown under control
- Risk a small, fixed percentage per trade so streaks stay survivable.
- Size positions to your stop with the Position Size Calculator.
- Treat any prop-firm daily limit as tighter than your own comfort zone.
- Judge strategies by their drawdown, not just their returns.
Risk disclaimer: This article is educational content only and is not financial advice. Trading involves significant risk of loss, and drawdowns are an inherent part of trading. Past performance does not guarantee future results. You are responsible for your own decisions.
Frequently asked questions
What is a good maximum drawdown?
There's no single 'good' number, but shallower is always easier to recover from. Many risk-conscious traders aim to keep peak-to-trough drawdown in the low double digits or less. The key is that recovery becomes disproportionately harder as drawdown deepens.
What is the difference between daily and maximum drawdown?
Daily drawdown limits how much you can lose in a single trading day; maximum (overall) drawdown limits how far the account can fall from its starting balance or peak across the whole account life. Prop firms usually enforce both.
What is the difference between static and trailing drawdown?
Static drawdown is measured from your starting balance and doesn't move. Trailing drawdown follows your highest balance or equity upward, so as you make profit the loss limit rises with you — which is significantly harder to trade under.
Why is recovering from drawdown so hard?
Losses and the gains needed to recover them are asymmetric. A 50% loss requires a 100% gain to break even. The deeper the hole, the disproportionately larger the return needed to climb out.