These money management rules are the kind you’ve probably heard before, but for any hopes of consistent long term profitability, they should be nailed to your bedpost for you to read every day when you wake up. Robert W. Colby compiled this list from decades of observing what actually separates disciplined traders from the rest, and it’s worth revisiting whenever your own habits start to slip.
18 money management rules every trader should follow
- Always play by the rules. No exceptions.
- Treat investing as a serious business requiring consistent discipline.
- Capital preservation is priority number one.
- Beginners should risk only a small fraction of capital using minimum-size orders.
- Avoid overconfidence after winning trades. Always have an exit strategy.
- Respect the dominant trend. Trade with it, not against it.
- Analyse trends across multiple timeframes.
- Calculate reward-to-risk before entering any position.
- Commit no more than 5% of total capital to any one position.
- Short-term traders should limit losses to 1% or less per position.
- Short-term traders should call a time-out when total portfolio drops 5%.
- Longer-term investors should limit losses to 5–9% per position.
- Longer-term investors should call a time-out when total portfolio drops 15%.
- Always use actual stop-loss orders. Mental stops are too easily ignored.
- Use time stops to avoid tying up capital in positions that are not working.
- Find a system with an edge. Rank systems by Expectancy: (Win Rate × Average Win) minus (Loss Rate × Average Loss).
- Rank systems by Calmar Ratio: compound annual return divided by maximum drawdown.
- Stay adaptive. Markets change, trends shift, and any system can stop working at any time.
No single rule here is complicated on its own — the difficulty is applying all eighteen consistently, especially the ones about cutting losses and stepping away after a bad stretch. Most traders know these money management rules intellectually long before they actually follow them under pressure.
