Risk management: the 1% rule explained with numbers
The 1% rule says never risk more than 1% of your account on a single trade: with €5,000, your maximum loss per trade is €50 — whatever the market does. It is trading's least glamorous rule and its most important one: it does not make you win more, it makes you impossible to ruin in the short term. And that is the only condition under which any strategy gets the time it needs to work.
The maths behind it: streaks are inevitable
Even good systems chain losses. A system that wins 50% of the time will, with complete statistical normality, suffer streaks of 6-8 consecutive losses within a few dozen trades. The question is not whether it will happen to you — it is what it will cost when it does:
| Risk per trade | After 8 straight losses | Gain needed to recover |
|---|---|---|
| 1% | −7.7% | +8.4% |
| 5% | −33.7% | +50.8% |
| 10% | −57% | +132% |
There lies the arithmetic trap: big losses demand disproportionate gains just to get back to break-even. At 1%, a bad streak is an annoyance; at 10%, it is a hole most never climb out of — financially or psychologically.
How it works: risk decides size (not the other way round)
The rule runs in three steps, always in this order:
- 1. Euros at risk: 1% of your account. €3,000 account → €30.
- 2. Stop distance: set by your analysis — where the idea is invalidated — never by your appetite. Say 25 pips on EUR/USD.
- 3. Position size: risk ÷ distance. €30 ÷ 25 pips = €1.20 per pip → roughly one mini lot.
Notice what this implies: size is the consequence, not the decision. If the correct stop is far away, the position comes out small — and that is fine. Tightening the stop to fit a bigger size is running the process backwards, and it is exactly mistake #2 that burns the most gold accounts.
The nuances that separate understanding from reciting
- Total open risk: three simultaneous trades at 1% each is 3% at stake — and if they are correlated (gold and silver, two dollar pairs), it is in practice one big bet. Watch combined exposure, not just each trade.
- 1% or 2%? 2% is defensible with experience and a data-validated system. To start — and forever during bad streaks — 1% is the standard for a reason.
- 1% of current capital, not initial: if the account shrinks, the 1% shrinks with it. That detail is the automatic brake that makes ruin nearly impossible.
The classic mistake: dropping it exactly when you need it most
Nobody breaks the rule cold. It gets broken after three losses, "to recover fast", doubling the risk on the next trade — which is statistically just as uncertain but emotionally irresistible. It is the exact mechanism we describe in why 90% of traders lose money: risk management does not fail through ignorance, it fails through abandonment in the heat of the moment. The fix is boring and it works: the rule is decided before trading and is never renegotiated with a position open. Your cold self sets the rules; your hot self only executes them.