What is a trailing drawdown? How it works and why it matters
April 2026
The trailing drawdown is the mechanism that ends your funded account. Most traders who blow prop firm accounts do so because they didn't fully understand how the drawdown was calculated. Here's exactly how it works.
What trailing drawdown means
A trailing drawdown means the maximum loss threshold moves up as your account grows — it trails your peak balance. Unlike a static drawdown (where your floor never moves), a trailing drawdown gives you less room to lose as you profit, because it locks in part of your gains as protected equity.
A concrete example
Account: $50,000. Trailing drawdown: $2,000. Starting floor: $48,000.
- You make $1,000 → balance $51,000 → floor moves to $49,000
- You make another $1,000 → balance $52,000 → floor moves to $50,000
- The floor can never go above your starting balance (once locked, it stops trailing)
- You lose $2,000 from $52,000 → balance $50,000 → still above floor ✅
- You lose $2,001 from $52,000 → balance $49,999 → account failed ❌
✅ When the trailing stops
On most platforms, once your account balance is high enough that the trailing floor equals your starting balance, the drawdown "locks" and becomes static. On a $50K account with $2K drawdown, once you've made $2K+ profit, your floor is locked at $50K and doesn't trail further.
EOD vs intraday trailing — the critical difference
End-of-day (EOD): the trailing floor updates once per day at market close, based on your closing balance. Intraday peaks do NOT affect the floor.
Intraday: the floor updates in real time based on your highest intraday balance. This is much more dangerous.
| Scenario | EOD result | Intraday result |
|---|---|---|
| Open +$3,000, close -$500 (net +$2,500) | Floor moves up $2,500 | Floor moves up $3,000 |
| Open +$1,500, reverse to -$1,000 | Floor stays at yesterday's close level | Floor moved up $1,500 intraday, now you only have $500 room |
| Large intraday spike and reversal | Safe — only close matters | Can fail account even on a breakeven day |
Which is right for you
If your strategy has large intraday swings (momentum, breakout, scalping), always prefer EOD trailing drawdown. If your strategy is tight range-trading with small intraday moves, intraday trailing is acceptable. When in doubt, EOD is always the safer choice.
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