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// DRAWDOWN GUIDEFoundationBeginner

Learn Position Sizing — The Honest Guide.

The exact mathematical formula that prevents you from ever blowing an account. Stop guessing your trade size.

Difficulty:Beginner
Time to Learn:1 week
Risk Level:Low

The complete guide to calculating position size in trading. Learn the exact formula for Forex, Indices, and Crypto to ensure you never risk more than 1% per trade.

The Honest Reality

The reason 80% of retail traders lose their money is not because their strategy is bad. It is because they do not know how to size their positions. They trade a static amount—like '£5 a point'—regardless of how far away their stop loss is. This means on some trades they risk 1% of their account, and on others they risk 10%. One unexpected market movement wipes out weeks of profit. Professional trading is a game of standardized risk. If you do not calculate your exact position size before every single trade, you are gambling.

1. The Position Sizing Formula

Your position size should never be determined by 'how confident' you feel about a trade. It is a strict mathematical calculation based on three variables: 1. Account Balance: Your total trading capital. 2. Risk Percentage: Usually 1% (your maximum loss on the trade). 3. Stop Loss Distance: The distance from your entry price to your stop loss price (measured in pips or points). The Formula: Position Size = (Account Balance × Risk Percentage) ÷ (Stop Loss Distance × Pip Value) If you have a £10,000 account, and you risk 1%, your maximum risk is £100. If your Stop Loss is 20 pips away, you must divide your £100 risk by 20 pips. £100 ÷ 20 = £5 per pip. Your exact position size is £5 per pip. If the stop loss is hit, you lose exactly £100 (1%).

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2. Dynamic Sizing: The Stop Loss Dictates the Size

The most important concept to grasp is that your position size must be dynamic; it changes on every trade depending on the size of your stop loss. Imagine you have two different trades, but you want to risk the exact same £100 on both: Trade A: A scalping trade on EUR/USD with a tight 10-pip stop loss. Calculation: £100 ÷ 10 = £10 per pip. You can take a large position (£10/pip) because the stop is so tight. Trade B: A swing trade on GBP/JPY with a wide 100-pip stop loss. Calculation: £100 ÷ 100 = £1 per pip. You must take a much smaller position (£1/pip) because the stop is very wide. In both scenarios, if the trade completely fails and hits the stop loss, you lose exactly £100. Your risk remains perfectly static, while your position size adapts.

  • /Tight Stop Loss = Larger Position Size (to reach your 1% risk).
  • /Wide Stop Loss = Smaller Position Size (to stay within your 1% risk).
  • /Never move a stop loss just to take a larger position size.

3. Spread Betting vs. CFD Sizing

How you input your position size depends entirely on the type of account you are using in the UK. Spread Betting Sizing: Spread betting is the easiest format to calculate. Your position size is literal pounds per point (£/pt). If the formula tells you to trade £5 per point, you literally enter '5' into the deal ticket. It is clean and transparent. CFD/Forex Lot Sizing: If you use a standard CFD or ECN broker (like Pepperstone or IC Markets), you trade in 'Lots'. 1 Standard Lot = 100,000 units (Roughly $10 a pip) 1 Mini Lot = 10,000 units (Roughly $1 a pip) 1 Micro Lot = 1,000 units (Roughly $0.10 a pip) If your calculation dictates a risk of $3 per pip, you would open a position size of 0.30 Lots.

PETE'S TIP

"Always double-check your pip value. In Forex, the pip value for EUR/USD is different from USD/JPY or GBP/AUD. A position size calculator handles these currency conversions automatically."

// THE DRAWDOWN PATH

professional-grade Curriculum

Start Phase 1 Free
PHASE 01

Ground Zero

Foundations of risk, market mechanics, and the survivor mindset.

2 weeks
PHASE 02

Chart Reader

Master price action, liquidity cycles, and technical intuition.

4 weeks
PHASE 03

Strategist

Developing your edge with high-probability professional setups.

4 weeks
PHASE 04

Risk Manager

Scaling positions, managing drawdown, and professional sizing.

Ongoing

Crucial Warning: The Guru Trap

Most online guides for "Position Sizing" are designed to sell you indicators or signal groups. At Drawdown, we teach you strategy and discipline. If a guide promises "guaranteed" returns or "100% win rates," it is a scam. Period.

Common Questions.

Can I risk a fixed monetary amount instead of a percentage?

You can, but it is less effective than a percentage model. A percentage model naturally compounds your account. If your account grows from £10k to £20k, your 1% risk automatically scales from £100 to £200. A fixed amount stunts your compounding growth.

What happens if a market gap jumps over my stop loss?

This is called 'slippage'. If a market gaps over your stop loss over the weekend or during a major news event, you will lose more than your calculated 1% risk. The only way to prevent this is by using a Guaranteed Stop Loss (GSLO), which brokers charge a premium for.

Is £1 a point considered a big position?

Position size is relative entirely to your account balance. £1 a point on the FTSE 100 with a 50-point stop loss is £50 risk. If you have a £500 account, that is a massive 10% risk (reckless). If you have a £5,000 account, it is a perfect 1% risk.