# Position sizing: how to risk a fixed percentage per trade

> How much you trade matters more than where you enter. A step-by-step method for sizing positions from your stop-loss and the amount you are willing to lose.

- Canonical URL: https://forextradingcommunity.com/news/position-sizing-and-risk-per-trade/
- Type: Guide
- Published: 2026-09-14
- Updated: 2026-09-14
- Publisher: Forex Trading Community (https://forextradingcommunity.com), FTC Editorial Team
- Currencies: USD, EUR, JPY

Most traders who blow up an account don't do it with one bad idea. They do it with position sizes that turn an ordinary losing streak into a disaster. Position sizing is the part of trading you fully control, so it is the best place to start managing risk.

## The method in four steps

1. **Decide the risk per trade** as a percentage of your account. Many traders use between 0.5% and 2%.
2. **Place the stop-loss** where the trade idea is proven wrong, based on the chart, not on how much you want to risk.
3. **Measure the stop distance** in pips.
4. **Calculate the position size** so that hitting the stop loses exactly the amount from step 1.

The formula:

> Lots = risk amount ÷ (stop distance in pips × pip value per lot)

## Example on EUR/USD

- Account: $5,000
- Risk: 1% = $50
- Stop-loss: 25 pips below entry
- Pip value for one standard lot of EUR/USD on a dollar account: $10

Position size = $50 ÷ (25 × $10) = **0.20 lots**.

If the stop is hit, you lose $50 plus costs. If the chart needs a 50-pip stop instead, the position halves to 0.10 lots. The risk stays the same; the size adapts.

## Example on USD/JPY

With USD/JPY at 150.00, one pip on a standard lot is worth about $6.67. Risking $50 with a 30-pip stop:

Position size = $50 ÷ (30 × $6.67) ≈ **0.25 lots**.

## Why small percentages matter

Losing streaks happen to every strategy. At 2% risk per trade, ten losses in a row leave the account about 18% down. At 10% per trade, the same streak leaves it about 65% down.

Recovering is harder than losing: a 20% drawdown needs a 25% gain to get back to where you started, and a 50% drawdown needs a 100% gain.

## Things the formula doesn't cover

- **Costs.** Spread and commission add to the loss if the stop is hit.
- **Slippage and gaps.** Stops can fill beyond their level in fast markets or when the market reopens after a weekend. See [bid, ask and slippage](/news/bid-ask-and-slippage-explained/).
- **Correlated positions.** Buying EUR/USD and GBP/USD at the same time is close to one larger position against the dollar. Count them together; see [currency correlation](/news/currency-correlation-explained/).
- **Account currency.** If your account isn't in dollars, convert the pip value into your account currency first.

For how pip values are worked out, see [what is a pip](/news/what-is-a-pip-and-how-to-calculate-pip-value/).

## Common questions

### How do I calculate lot size from risk?

Divide the amount you are willing to lose by the stop distance in pips multiplied by the pip value per lot. For $50 risk, a 25-pip stop and $10 per pip per lot, that is 0.20 lots.

### What is the 1% rule in trading?

A guideline to risk no more than 1% of the account on any single trade, so a losing streak doesn't cause a drawdown you can't recover from. It is a starting point, not a guarantee.

### What position size should I use on a $1,000 account?

Apply the same formula as any account size: decide a risk percentage, say 1% or $10, place the stop where the trade idea is wrong, then divide $10 by the stop distance in pips times the pip value per lot. A smaller account simply produces a smaller lot size, often a fraction of a micro lot, which is why broker minimum lot sizes matter more on small accounts.

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This article is for information only and is not financial advice. Trading forex and CFDs carries a high risk of losing money.