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#Money Management #Lot Size #Risk per Trade #Position Sizing #การจัดการเงิน

What Is Money Management? How to Calculate Lot Size for Consistent Profits

Money Management is the key most traders overlook. Learn how to calculate the right Lot Size, appropriate Risk %, and why a good system must have strict MM.

16 March 2026 46 views TheXauBot
Money management lot size calculation for forex EA trading

What Is Money Management?

Money Management (MM) is the discipline of controlling how much you risk on each trade relative to your account size. It's the difference between a trader who survives 100 bad trades and one who blows up on trade number 5.

The Golden Rule: Risk 1–2% Per Trade

Professional traders and prop firms almost universally use a 1–2% risk per trade rule. Here's why it matters:

How to Calculate Lot Size

For XAUUSD (Gold), here's the formula:

Lot Size = (Account Balance × Risk %) ÷ (SL in pips × Pip Value)

Example: $1,000 account, 1% risk, 20 pip SL, $1 pip value (0.01 lot)
Lot Size = ($1,000 × 0.01) ÷ (20 × $1) = $10 ÷ $20 = 0.5 lots

Recommended Risk Levels by Account Size

Account SizeRecommended RiskMax Risk
Under $1,0000.5–1%2%
$1,000–$5,0001%2%
$5,000–$20,0000.5–1%1.5%
$20,000+0.25–0.5%1%

Why MM Matters More Than Win Rate

A trader with a 70% win rate and poor MM can go broke. A trader with a 40% win rate and excellent MM can grow steadily. It's the combination of positive Expected Value + strict MM that creates sustainable profitability.

All TheXauBot EAs include automatic position sizing — enter your risk % once, and every trade is calculated correctly from that point on.

Tags: #Money Management #Lot Size #Risk per Trade #Position Sizing #การจัดการเงิน

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