Profit factor, win rate and recovery factor all get quoted to make a strategy sound impressive. Drawdown is the number that tells you what it actually feels like to hold it.
It’s the statistic most likely to end a trading account, blow a prop firm challenge, or push someone to abandon a genuinely sound system at exactly the wrong moment — and it’s widely misunderstood, because a percentage on its own hides how disproportionately painful recovering from it can be.
This guide explains what drawdown actually measures, why the maths behind recovering from it is so unforgiving, and what counts as a genuinely good drawdown percentage for different types of trader.
What Is Drawdown?
Drawdown measures the decline from a peak in account equity to the lowest point reached before a new peak is made.
Drawdown % = (Peak Value – Trough Value) ÷ Peak Value × 100
If an account grows to £10,000, then falls to £7,500 before recovering, the drawdown is 25% — regardless of how the account performs afterwards.
Maximum drawdown is simply the largest such decline recorded over the period being measured. It says nothing about how the strategy makes money, only about the worst stretch you’d have had to sit through to stay in it.
Maximum, Relative and Absolute Drawdown
A few related terms get used, often loosely, and the differences matter, particularly if you’re evaluating a prop firm challenge:
- Maximum drawdown is the single largest peak-to-trough decline recorded across the whole track record — the worst case that actually happened.
- Absolute drawdown measures the decline from the account’s original starting balance, rather than from a subsequent peak. It only becomes relevant if the account has never grown above its starting balance.
- Relative (or trailing) drawdown measures the decline from the highest equity point ever reached, and continuously moves up as new peaks are made. This is the version most prop firms enforce, and it’s stricter than it sounds — profits already booked can still be given back before the trailing limit is breached.
Confusing these can matter a great deal. A trader who assumes their drawdown limit is measured from their starting balance, when their prop firm actually measures it from their highest-ever equity, can be caught out by a limit that’s far closer than they realised.
The Maths That Makes Drawdown So Dangerous
Losses and the gains needed to recover from them are not symmetrical, and the gap widens dramatically as the drawdown grows. A 10% loss only needs an 11.1% gain to get back to breakeven. A 50% loss needs a 100% gain — the account has to double just to get back to where it started.
| Drawdown | Gain Needed to Recover |
|---|---|
| 10% | 11.1% |
| 20% | 25.0% |
| 30% | 42.9% |
| 50% | 100.0% |
| 75% | 300.0% |
| 90% | 900.0% |
This is the real reason drawdown deserves more attention than it usually gets. A strategy doesn’t need to lose most of an account to become extremely difficult to recover from — by the time a drawdown reaches 50%, the maths alone has turned a bad month into a near-impossible recovery, quite apart from the psychological toll of trying.
What Counts as a Good Drawdown Percentage?
There’s no single correct number — it depends heavily on the strategy style, timeframe and how much volatility a trader can genuinely tolerate, both financially and psychologically.
As a general guide, based on a track record covering a reasonable length of time and a range of market conditions:
| Max Drawdown | What It Usually Suggests |
|---|---|
| Under 10% | Conservative. Common among longer-term, well-diversified or lower-leverage approaches. Easy to sit through, but may also indicate low position sizing and modest returns. |
| 10% – 20% | Moderate. A reasonable balance for many swing and trend-following strategies, and typically within most prop firm limits. |
| 20% – 35% | Aggressive. Can still be sustainable for an experienced trader with a matching risk tolerance, but recovery from the higher end of this range starts to require substantial gains. |
| 35% – 50% | High risk. Requires a 54–100% gain just to recover. Worth asking hard questions about position sizing and staking method. |
| Above 50% | Very high risk, regardless of the headline profit figures. Many traders and virtually all prop firms would consider this unacceptable. |
A useful sanity check: whatever number you’re looking at, ask whether you could genuinely watch that percentage disappear from your account next month, with your own money, without changing your behaviour.
A drawdown that looks fine on a chart can feel very different when it’s happening in real time.
Drawdown Rules at Prop Trading Firms
Funded trading programmes typically set a maximum drawdown limit as a hard rule, and breaching it — even briefly, even intraday on some accounts — usually ends the account immediately. Two structures are common:
- Static drawdown is measured from the account’s original starting balance and doesn’t move as the account grows.
- Trailing drawdown moves up with the account’s highest equity point, meaning profits already made can still count against you if a later losing streak eats into them.
Trading a strategy with a backtested maximum drawdown close to, or only slightly under, a prop firm’s limit is a common way funded accounts get breached — a live drawdown often ends up larger than the equivalent backtest, for reasons covered next.
Why Backtested Drawdown Often Understates the Real Risk
A drawdown figure pulled from a backtest or a short live track record can look considerably better than what a strategy will eventually produce, for several familiar reasons: the test period may not have included a genuine trending or high-volatility stretch, the strategy may have been tuned with hindsight to a specific stretch of data, and martingale or grid-style position sizing can keep reported drawdown artificially low for a long time — right up until a losing sequence finally produces the large drawdown the earlier data never showed.
Treat any drawdown figure as a floor on what’s possible, not a ceiling. The worst drawdown a strategy has shown you so far is not necessarily the worst drawdown it will ever produce.
How to Judge Drawdown Properly
- Check whether the figure is maximum, relative or absolute drawdown, and which one applies to any rules or limits you’re trading under.
- Check the length and variety of the test period. A drawdown figure from a few calm months tells you far less than one covering several years and multiple market conditions.
- Check the staking method. Martingale, grid or any strategy that increases position size after a loss can understate its true worst-case drawdown until it’s too late.
- Work out the recovery gain required, using the table above, and ask honestly whether that recovery is realistic.
- Consider it alongside profit factor and recovery factor, rather than in isolation — a strategy’s drawdown only means something in the context of the return it’s attached to.
Key Takeaways
Drawdown percentage on its own is only half the picture — the recovery required from it grows disproportionately as the drawdown deepens, which is what makes a 40–50% drawdown so much more dangerous than a 20% one, not simply twice as bad.
Before judging any strategy, robot or prop firm challenge by its drawdown figure, check whether it’s maximum, relative or absolute, how long and varied the test period was, and whether you could genuinely tolerate watching that percentage happen to your own account.
This article is for educational purposes and does not constitute financial advice. Trading forex carries a high level of risk and may not be suitable for all investors.
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