The 1% rule is popular because it forces every trade through the same question: how much can I lose if I am wrong? It does not make a strategy profitable by itself, but it can stop one bad idea from becoming an account-level problem.
If your account is $10,000 and you risk 1%, the most you plan to lose on the trade is $100. The stop-loss distance decides the lot size. A wider stop means smaller size. A tighter stop allows larger size, but only if the tighter stop is technically valid.
| Account | Risk % | Risk amount | What it means |
|---|---|---|---|
| $1,000 | 1% | $10 | Small losses keep you in practice mode. |
| $10,000 | 1% | $100 | Every setup must justify a $100 planned loss. |
| $100,000 | 0.5% | $500 | Large accounts often benefit from smaller percentage risk. |
Risk less when volatility is unusually high, spreads are wide, news is near, the trade is counter-trend, or you are trading a prop firm account with strict daily drawdown limits. The rule is a ceiling, not a target you must hit.