Ask experienced traders what keeps them alive and you'll hear the same theme: they lose small. The 1% rule is the simplest way to build that habit. It's a single number that stops any one trade from doing real damage to your account.
What the 1% rule says
The rule is easy to state: never risk more than 1% of your trading account on a single trade.
"Risk" here means the amount you'd lose if the trade hits your stop loss — not the total size of the position. On a $5,000 account, 1% is $50. So no matter how confident you feel, you structure the trade so that being wrong costs you about $50 at most.
That's it. One rule, applied to every trade, forever.
Why such a small number works
Small losses are survivable losses. Consider what a string of bad trades does under different risk levels:
- Risk 1% per trade and ten losses in a row leaves you down roughly 10% — annoying, but easily recovered.
- Risk 10% per trade and the same ten losses nearly wipe you out.
Losing streaks happen to everyone, even with a good strategy. The 1% rule guarantees that a rough patch is a setback, not a knockout. It keeps you in the game long enough for your edge to play out.
Note
The 1% rule protects you from risk of ruin — the chance of losing so much that you can't recover. Staying in the game is the whole point; you can't win from the sidelines.
How to size a position around it
Turning the rule into an actual trade takes three numbers:
- Account risk — 1% of your balance (e.g. $50 on a $5,000 account).
- Stop distance — how far, in pips, your stop loss sits from your entry.
- Position size — chosen so that stop distance × position size = your 1% amount.
The key insight: a wider stop means a smaller position, and a tighter stop allows a larger one. Your stop should be placed where the trade idea is proven wrong — then you shrink or grow the position to keep the dollar risk at 1%. You never widen your risk just to fit a bigger trade.
The 1% rule needs a stop loss
The rule only works if you actually define your exit before you enter. Without a stop loss, there's no fixed "1%" — a losing trade can run indefinitely. A pre-set stop is what converts a vague hope into a known, capped risk.
Risk
Leverage lets you open positions far larger than your balance, which can push losses past your intended risk fast. The 1% rule and a hard stop loss are what keep leverage from turning one trade into a disaster.
Is 1% a hard law?
Not exactly — it's a discipline, not a magic number. Some cautious traders use 0.5%; a few use 2%. What matters is choosing a small, fixed percentage and applying it consistently. Beginners are almost always better off erring low: the goal early on is to survive and learn, not to get rich on one trade.
Practise sizing before it's real
Position sizing feels abstract until you do it. A demo account lets you practise calculating risk, placing stops, and sizing trades to 1% in live conditions — with nothing on the line while the habit forms.
Pepperstone
Best for Copy Trading
Trading Forex and CFDs involves a significant risk of loss.
The bottom line
The 1% rule caps the loss on any single trade at about 1% of your account, so no one trade — and no losing streak — can take you out. Pair it with a real stop loss, size each position to fit that 1%, and you've built the single most important habit in risk management: losing small so you can keep trading.
Educational content only, not financial advice. Trading forex carries a high level of risk. Read our full affiliate disclosure.