FIRE Calculator – Plan Your Path to Financial Independence
Estimate how many years until you reach financial independence, how much you will have at FIRE and how much you can safely withdraw each year. Enter your age, savings, monthly contributions, expected return and annual expenses. Free, no sign-up.
FIRE Calculator
Financial Independence Retire Early. Estimate years to FIRE, corpus at retirement and safe withdrawal amount using the 4% rule.
How the FIRE calculation works
The calculator projects your corpus by growing current savings and monthly contributions at your assumed return until the target age. It then applies the 4% safe withdrawal rule: you can withdraw 4% of the corpus annually (adjusted for inflation in practice) with a high probability of not depleting the portfolio over 30 years.
Corpus = FV(savings) + FV(monthly contributions) | Safe withdrawal = 4% × corpus
Understanding FIRE and how to use this calculator
Financial Independence, Retire Early (FIRE) is a movement built on aggressive saving and investing so that you can stop working for money years or decades before the traditional retirement age. The idea is simple: build a large enough nest egg that the returns or withdrawals from it cover your living expenses. Once you reach that point, you have the option to retire, work part-time, pursue passion projects or simply enjoy more freedom.
This FIRE calculator helps you quantify that goal. You enter your current age and the age at which you want to achieve financial independence. You also provide your current savings, how much you save each month and an expected annual return on your investments. Finally, you enter your annual expenses—the amount you need to cover each year in retirement. The calculator projects how much you will have at your target age and applies the 4% safe withdrawal rule to estimate how much you can withdraw annually without a high risk of running out of money.
The 4% rule comes from the Trinity Study and similar research: historically, a portfolio of stocks and bonds could support a 4% inflation-adjusted withdrawal rate over 30 years with a high success rate. This calculator uses 4% of your projected corpus as the safe withdrawal amount. In practice, you would withdraw 4% in year one and increase that amount by inflation each year. The rule is a guideline, not a guarantee; sequence-of-returns risk, taxes and changing expenses all affect outcomes.
Your expected return has a big impact on the result. Use a conservative number—many FIRE planners assume 6–7% after inflation for a balanced portfolio. If you use 10% or higher, you may under-save. Your annual expenses should reflect the lifestyle you want in retirement: housing, food, healthcare, travel, hobbies and a buffer for unexpected costs. Some people plan for lower expenses (e.g. no commute, paid-off home); others plan for more travel and leisure.
Compare the safe withdrawal amount to your annual expenses. If the withdrawal amount is greater than or equal to your expenses, you are on track for your target age. If not, you need to save more, work longer, reduce expenses or adjust your return assumption. Use our SIP Calculator and Investment Calculator to model different savings rates and growth scenarios. Pair this with the Retirement Corpus Calculator for a more detailed view of retirement income.
FIRE is not only about early retirement; it is about having choices. Whether you want to quit your job at 40, switch to part-time work or simply know you could stop if you wanted to, this calculator gives you a clear target and a way to track progress. Revisit it regularly as your savings, income and goals change.