Risk & psychology

The 1% rule is a budget, not a commandment

Risking 1% per trade sounds simple. Without stop distance and position size math, it is meaningless.

By Dr. Elena Voss

Direct answer

The 1% rule means you risk at most 1% of account equity if your stop is hit. It is a loss budget per trade — not a prediction about how far price will move.

Beginners hear “risk 1%” and treat it like a magic number. Professionals treat it as one input in a sizing formula that also includes stop distance, pip or tick value, and whether the strategy’s edge is even measurable yet.

The formula in plain language

Dollar risk = account equity × risk percent. Position size = dollar risk ÷ (stop distance × value per unit). Skip any step and “1%” is just a slogan.

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FAQ

Wider stops with the same 1% risk require what change to position size?
Smaller position size — more distance to stop means fewer units for the same dollar risk.

Continue in the curriculum

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Risk · The 1% rule lesson

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