Finding the month you can stop saving for retirement

Coast FIRE is the point where your investments can grow to your retirement goal without another dollar of new saving. Instead of one static number, Coast FIRE Planner estimates the month that happens, then stress-tests the plan across 1,000 simulated markets so you can see your odds.

You can also run Barista, Lean, Fat, and regular FIRE calculators, plus Canada, UK, and Australia editions in local currency. There is no sign-up; numbers stay in your browser. Assumptions and formulas are on the methodology page.