Retirement Calculators
FIRE Calculator
Work out the number you need for financial independence and how many years of saving at your current rate it takes to get there.
Your FIRE number
$1,125,000
- Years to financial independence
- 15.8 years
- Still to accumulate
- $1,005,000
- Progress to target
- 10.7%
How this calculator works
Target = annual spending ÷ safe withdrawal rate
- safe withdrawal rate
- the share of the portfolio you plan to spend each year
Example calculation
Illustrative example — not advice
Worked example — the fire calculator as it loads, using the default figures below.
- 01Enter annual spending in retirement: $45,000.
- 02Enter safe withdrawal rate: 4%.
- 03Enter currently invested: $120,000.
- 04Enter monthly saving: $2,500.
- 05Enter expected annual return: 6.5%.
- 06Read the your fire number from the results panel: $1,125,000.
Your FIRE number: $1,125,000. Years to financial independence: 15.8 years. Still to accumulate: $1,005,000. Progress to target: 10.7%.
These figures come straight from the calculator above running on the values listed, so you can retype them and confirm every number yourself. Change any input and the results update immediately. Illustrative only — not a quote, offer or recommendation.
Important considerations
- Healthcare and long retirements make early independence more demanding than the arithmetic suggests.
- Spending, not income, drives the target — every dollar cut lowers it by 25 at a 4% rate.
Related calculators
- Coast FIRE CalculatorThe balance that reaches your target with no further saving.
- Retirement Income CalculatorSustainable income and how long the pot lasts.
- Savings Rate CalculatorYour true savings rate and what it buys.
- Retirement CalculatorProject your retirement balance and the income it could sustain.
- 401(k) CalculatorWorkplace plan balance including employer contributions.
- IRA CalculatorTraditional IRA balance at retirement.
Terms used here
Frequently asked questions
Why divide by the withdrawal rate?
It is the inverse of the multiple you need: 4% implies 25 times annual spending.
Disclaimer
Legamoney calculators are educational tools. Results are estimates based on the figures you enter and do not constitute financial, tax or legal advice.
Last reviewed 2026-08-01