Years To Financial Independence
Calculator

It's the point where your investment portfolio, growing at your assumed return and fed by your savings rate, reaches the size needed to cover your expenses indefinitely at a chosen withdrawal rate (your FIRE number). The calculator finds how many years of saving it takes to get there from your current balance.

Financial independence timing depends on the gap between what you earn and what you spend, not on income alone — a high earner who spends nearly everything reaches independence slower than a modest earner who saves half their income, because a higher savings rate both builds the portfolio faster and lowers the target needed to cover expenses.

Because savings rate affects both sides of the equation at once: more saved means both a bigger contribution to the portfolio and a smaller expense base to eventually cover, which compounds together in a non-linear way, especially at high savings rates (50%+).

Typically yes, aside from an inflation adjustment — the model generally holds your real spending level constant. If you expect major changes to spending (children, paying off a mortgage, healthcare costs), those need to be factored in separately or re-run with adjusted inputs.

A very long timeline usually flags a savings rate too low relative to the target, or a withdrawal rate assumption that's too conservative for your goals; try testing a higher savings rate or a later retirement age rather than treating the number as fixed.