How Much Risk Per Trade Is Safe? The 1-2% Rule
The 1-2% rule caps risk per trade at a small percentage of your account, driving risk of ruin toward zero and keeping losses survivable.
How Much Risk Per Trade Is Safe? The 1-2% Rule
If you only learn one number in trading, learn this one: 1% per trade.
The 1-2% rule states that you should never risk more than 1%–2% of your account on a single trade. It sounds restrictive. It's actually the rule that makes long-term survival possible.
What "risk per trade" actually means
Risk per trade is not position size. It's the maximum amount you'd lose if your stop is hit, expressed as a percentage of your account.
Risk per trade = (Entry − Stop) × Position size
Risk % = Risk per trade ÷ Account balance × 100
Example: $10,000 account, 50 shares at $50 entry, stop at $48.
- Max loss = 50 × ($50 − $48) = $100
- Risk % = $100 ÷ $10,000 = 1%
The position cost $2,500 (25% of account) — but the risk is 1%. Those are different numbers, and confusing them is a common beginner mistake.
Why 1%–2%?
The rule exists to make risk of ruin mathematically negligible. Compare:
| Risk per trade | Trades to blow account | Risk of ruin (5% edge) |
|---|---|---|
| 0.5% | ~200 | ~0% |
| 1% | ~100 | ~0% |
| 2% | ~50 | ~1% |
| 5% | ~20 | ~30% |
| 10% | ~10 | ~80% |
A 10-trade losing streak happens to every strategy eventually. At 1% risk, that streak leaves you down 9.6% — annoying but survivable. At 10% risk, the same streak leaves you down 65% — and that's before the psychology of a 65% drawdown makes you trade worse.
Choosing your number within 1%–2%
| Trader profile | Recommended risk |
|---|---|
| Beginner (first 100 trades) | 0.5%–1% |
| Validated edge, disciplined | 1%–1.5% |
| Experienced, high-conviction setups | 1.5%–2% |
| Never | > 2% |
Most beginners should start at 0.5%–1% — not because their edge is weak, but because their discipline is. You can't learn emotional control at risk levels that trigger the threat response. Start small enough that losses are annoying, not frightening.
The 1% rule and drawdowns
The same rule protects against drawdowns. At 1% risk, a 10% drawdown requires 10 consecutive losses. At 2%, it requires 5. At 5%, just 2. The math is unforgiving — and so is the market.
Common mistakes
1. Counting position cost as risk
"I'll only use 5% of my account per trade" — but if the stop is 20% away, your risk is 20% of 5%, which is 1%. The relevant number is the risk, not the cost.
2. Scaling up after wins
You won three in a row, you bump to 3%. The market turns, the 3% losses compound, and you give back the gains plus more. Risk percentage should be constant, not momentum-driven.
3. Ignoring combined risk
If you have 5 trades open at 1% each, your total open risk is 5%. A correlated selloff can hit all five. Cap combined risk at 5%–6% of account.
How to apply it
- Pick your risk percentage (start at 0.5%–1%)
- Compute position size with the position size calculator for every trade
- Verify combined open risk never exceeds 5%–6%
- Log actual risk taken in your journal — if it drifts from your plan, your discipline is leaking
- Re-evaluate your risk percentage quarterly — raise it only when your discipline and edge are both proven
The verdict
The 1-2% rule isn't conservative. It's the threshold below which trading is survivable. Above it, you're not trading — you're gambling with extra steps. Get the number right, and almost everything else in trading becomes easier.