How much to risk on one trade
The one number that decides whether a losing streak is annoying or fatal.
Risk per trade is the share of your account you lose if your stop is hit. It matters more than your strategy, your indicators or your win rate, because it decides whether you survive long enough for any of those to work.
Here's what ten losses in a row does at different risk levels:
| Risk per trade | Account after 10 straight losses |
|---|---|
| 1% | down about 9.6% |
| 2% | down about 18.3% |
| 5% | down about 40.1% |
Ten losses in a row sounds unlikely. It isn't, over hundreds of trades. And the deeper the hole, the harder the climb out: a 40% drawdown needs a 67% gain just to get back to even.
Working out your position size
- Decide your risk, for example 1% of a $10,000 account, which is $100.
- Measure your stop distance, for example $5.50 on gold.
- Work out the loss per lot at that stop. One lot of gold is usually 100 ounces, so $5.50 × 100 = $550.
- Divide: $100 ÷ $550 = 0.18 lots, rounded down.
The checker does this for you, and it always rounds down so you never risk more than you planned.
Prop accounts
Prop firms add a daily loss limit, often around 5%, and a maximum drawdown, often around 10%. At 1% risk you can lose four trades in a day and still have room. At 2.5% risk, two losses put you at the edge.
Key points
- Most experienced traders risk 1% or less per trade.
- Set the risk first, then let the stop distance decide the lot size.
- Smaller risk means a longer runway to learn.
Try it in the checker
Change "Risk per trade" from 1% to 3% and watch the account risk factor turn against you.
Related terms
- Leverage
- Borrowed buying power, so a small deposit controls a much larger position.
- Lot
- The unit for trade size. One standard lot is 100,000 units of the base currency.
- Position size
- How many lots you trade, worked out from your account, your risk and your stop distance.
- Risk per trade
- The share of your account you lose if the stop is hit.