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Max Drawdown in Trading: What It Means, How to Calculate It and What Is Acceptable

Updated 2026-10-12 · H-BOT Africa team

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Quick answer: Drawdown is how far your balance has fallen from its highest point; maximum drawdown is the largest such fall over a period. Formula: (peak − lowest point after the peak) ÷ peak × 100. Losses need bigger gains to recover: a 20% drawdown needs a 25% gain, a 50% drawdown needs 100%. Keep risk small enough that your maximum drawdown stays within what you can live with, often 10–20% for a personal account.
Equity curve and drawdown of a simple rule on real Volatility 75 data
A simple MA 20/50 rule on 400 real V75 candles: the deepest dip from a peak was the maximum drawdown.

How to Calculate Drawdown

  1. Track your balance after every trade (or every day).
  2. Keep a running peak: the highest balance so far.
  3. Drawdown now = (peak − current balance) ÷ peak.
  4. Maximum drawdown = the largest drawdown in the whole record.

Excel: with balances in column B from B2, put =MAX($B$2:B2) in C2 (running peak) and =(C2-B2)/C2 in D2 (drawdown), copy down, then =MAX(D:D) gives the maximum drawdown.

Recovery Maths

DrawdownGain needed to get back
10%11%
20%25%
30%43%
50%100%
75%300%

How Much Drawdown Is Acceptable?

It depends on you. Many traders stop and review at 10% and set a hard limit near 20% for a personal account. Prop-firm style rules often use daily and overall drawdown limits. What matters is deciding the number before it happens.

How to Limit Drawdown

The H-BOT Analysis and journal shows drawdown for your bot runs. Related: growing a small account.

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Frequently Asked Questions

What is max drawdown?

The largest fall from a peak balance to a later low, as a percentage of the peak.

How is max drawdown calculated?

(Peak − lowest balance after the peak) ÷ peak × 100, taking the largest value over the period.

How much max drawdown is good?

Lower is better; many personal traders aim to keep it under about 10–20%.

Can max drawdown be positive?

It is usually shown as a positive percentage of loss, or as a negative number; both mean the same.

Why does a 50% loss need a 100% gain?

Because the gain is calculated on the smaller balance left after the loss.

Does max drawdown reset?

In your own records it covers the period you measure; prop firms define their own reset rules.

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