Calculating required monthly return
Convert an annual return target into a realistic monthly compounded return and reality-check it.
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Options, Risk Math, and Psychology
Risk Math Deep Dive
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Convert an annual return target into a realistic monthly compounded return and reality-check it.
Annual targets shrink when you compound monthly
Most new traders set a target like 'I want to make 100% in a year' and then divide by 12: 'so I need 8.3% a month'. That's wrong. It's wrong because compounding does math in your favor — but in this case, it means your required monthly return is SMALLER than 8.3%. The formula: required monthly rate = (1 + annual target)^(1/12) − 1. For 100% annual, that's (2.0)^(1/12) − 1 = 0.0595 = about 5.95% a month.
Worked table with the $500 account. 20% annual = 1.53% monthly (account grows from $500 to $600). 50% annual = 3.44% monthly (to $750). 100% annual = 5.95% monthly (to $1,000). 200% annual = 9.59% monthly (to $1,500). 500% annual = 16.07% monthly (to $3,000). Notice how aggressive the monthly target gets when the annual goal gets ambitious. Doubling your money requires a steady 5.95% per month — that's not 'just' eight bucks a week, that's a consistently high return that almost no one in real life manages without huge drawdowns.
Reality check. A Sharpe-1 retail strategy on a $500 account usually returns 1-3% per month with 1-2% monthly volatility. That's a 12-40% annual return — which is fantastic by professional standards, but it doesn't get you rich quickly. If your goal is to build a real account, the honest monthly target is more like 2-4%, with realistic patience. The traders who survive are the ones who set boring monthly targets and hit them consistently. The ones who set 100% annual targets blow up trying.
Recap: required monthly = (1 + annual)^(1/12) − 1. Compounding makes monthly targets SMALLER than naive division. 100% annual = ~6% monthly, not 8.3%. Most retail traders should aim for 2-4% monthly, not 100% annual.
Knowledge check
Answer before moving on.
1. You want to grow your $500 account by 50% in a year. What monthly compounded return do you need?
2. What's a realistic monthly compound target for a Sharpe-1 retail trader?
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