Use this Coast FIRE calculator to estimate how much you need invested today so your portfolio can grow to your retirement goal without additional contributions.
Coast FIRE means you have enough invested today that, with time and compound growth, your portfolio may reach your retirement goal even if you stop making new contributions.
This calculator discounts your retirement goal back to today's required portfolio value using your expected annual return and the number of years until retirement.
If your retirement goal is $1,000,000, you have 30 years until retirement, and you expect a 7% annual return, your Coast FIRE number would be much lower than $1,000,000 today because your investments have decades to compound.