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BlogPosition Sizing & Risk per Trade
Never blow your account. Learn the mathematical formula for perfect position sizing based on your stop loss and account balance.
Position Sizing & Risk per Trade
Key Takeaways
- The 1-2% Rule: Never risk more than 1-2% of your account on a single trade.
- Risk:Reward: Only take trades with at least 1:2 risk-to-reward ratio.
- Position Sizing: Calculate lot size based on stop-loss distance, not arbitrary amounts.
- Diversification: Don't put all capital on correlated trades.
- Survival First: Your #1 goal is to stay in the game long enough to become profitable.
Table of Contents
Why Risk Management Matters
Risk management is more important than your entry strategy. Even a 50% win rate can be profitable with proper risk management, while 80% win rate can blow your account if you size poorly.
Sobering Math: If you lose 50% of your account, you need 100% gain just to get back to breakeven. Protect your capital.
The 1-2% Rule
The golden rule of forex risk management: Never risk more than 1-2% of your account on a single trade.
| Account Size | 1% Risk | 2% Risk |
|---|---|---|
| $1,000 | $10 | $20 |
| $5,000 | $50 | $100 |
| $10,000 | $100 | $200 |
| $50,000 | $500 | $1,000 |
Risk-to-Reward Ratio
Risk-Reward Ratio (RRR) compares potential loss to potential profit.
- 1:1 = Risk $100 to make $100 (need 50%+ win rate to profit)
- 1:2 = Risk $100 to make $200 (need 33%+ win rate to profit)
- 1:3 = Risk $100 to make $300 (need 25%+ win rate to profit)
Minimum Standard: Only take trades with 1:2 or better risk-reward. This means your take-profit should be at least 2x your stop-loss distance.
Position Sizing
Calculate position size based on your risk amount and stop-loss distance:
Position Size Formula:
Lots = (Account × Risk %) / (Stop Pips × Pip Value)
Example: $10,000 account, 1% risk ($100), 50 pip stop, $10/pip for standard lot.
$100 / (50 × $10) = 0.2 lots
Managing Drawdowns
- Max Drawdown: Set a maximum (e.g., 20%) where you stop trading and reassess.
- Reduce Size: If in drawdown, reduce position size until recovering.
- Daily Loss Limit: Stop trading after losing 3-5% in a day.
- Consecutive Losses: Take a break after 3-5 consecutive losses.
Frequently Asked Questions
What is risk management in forex?
Strategies and rules to protect your trading capital from excessive losses. Includes position sizing, stop-losses, and risk limits.
What is the 1% rule in trading?
Never risk more than 1% of your account on a single trade. On a $10,000 account, max risk is $100 per trade.
What is a good risk-reward ratio?
Minimum 1:2. This means targeting 2x profit compared to what you're risking. 1:3 or better is excellent.
How do I calculate position size?
Lots = (Account × Risk%) / (Stop Pips × Pip Value). Or use a position size calculator.
What is drawdown?
The decline from peak account equity to current equity. 10% drawdown means you're down 10% from your highest point.
Can I risk 5% per trade?
Not recommended. 5 consecutive losses would lose 25% of your account. Stick to 1-2%.
What is maximum drawdown?
Your pre-set limit for losses before stopping and reassessing. Often 20-30% for retail traders.
Should I use martingale?
No. Doubling after losses (martingale) is extremely risky and can quickly blow your account.
How many trades should I have open?
Depends on correlation and risk per trade. Total risk across all positions should stay under 5-10%.
What if I lose 3 trades in a row?
Take a break. Review your trades. With 1% risk, you're only down 3% and can easily recover.
Is 50% win rate enough?
With 1:2 risk-reward, yes. 50% × $200 wins = $100 average. 50% × $100 losses = $50. Net = $50 profit.
Why is risk management more important than entry?
Even a mediocre strategy can profit with good risk management. Even great entries fail without it.
For deeper comparison, review our best forex brokers, check individual broker reviews, use the Match Me to a Broker quiz, and calculate risk with the position size calculator.