Frequently Asked Questions

Common questions about our methodology and calculations.

About the Calculations

Data & Assumptions

Using the Results

Comparisons

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Frequently Asked Questions

About the Calculations

Why do you use Monte Carlo simulation instead of historical backtesting?

How many simulations do you run?

What assumptions do you make about inflation?

What return assumptions do you use?

Data & Assumptions

Where does your historical data come from?

How often do you update the data?

How do you handle cryptocurrency?

Do you include international stocks?

Using the Results

What does 'success rate' mean?

How should I interpret the confidence bands?

Should I trust the 95th percentile projection?

What success rate should I target?

Comparisons

How does RetireMe compare to FireCalc?

Why are my results different from cFIREsim?

Ready to see your own numbers?