Use this free multi-asset FIRE calculator to model your path to Financial Independence, Retire Early. Select your asset classes, enter your balances and monthly contributions, and get a personalized projection of your FIRE number and estimated years to financial independence.
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Personal Information
Your FIRE Projection
How This FIRE Calculator Works
This FIRE calculator uses the widely-cited 4% Safe Withdrawal Rate to determine your target portfolio size. Divide your expected annual spending by your chosen withdrawal rate to find your FIRE number. For example, $50,000 per year at a 4% withdrawal rate means a FIRE number of $1,250,000. The calculator then uses compound growth formulas to project how long your current savings rate will take to reach that number.
What Is FIRE?
FIRE stands for Financial Independence, Retire Early. The movement centers on aggressive saving and smart investing to achieve financial freedom decades before traditional retirement age. Rather than working until 65, FIRE adherents aim to build a portfolio large enough to live off investment returns indefinitely — typically targeting a savings rate of 50–70% of take-home income until their FIRE number is reached.
Why Use a Multi-Asset FIRE Calculator?
Most FIRE calculators assume a single blended portfolio return. The Modern Wealth Model multi-asset FIRE calculator lets you assign different expected returns and monthly contributions to each asset class individually — stocks, bonds, Bitcoin, real estate, gold, and more. This gives you a far more accurate projection of your actual path to FIRE, accounting for each asset’s unique growth trajectory and your specific allocation strategy.
How to Use This FIRE Calculator
Start on the asset selection page to choose which asset classes to include in your FIRE calculator. Once selected, you will see input cards for each asset where you can enter your current portfolio value, monthly contribution amount, and expected real annual return. Then fill in your personal information — current age, annual spending, and preferred withdrawal rate — and the FIRE calculator will instantly project your FIRE number, current progress percentage, estimated years to financial independence, and projected FIRE date.
Understanding Your FIRE Number
Your FIRE number is the total invested portfolio value required to sustain your lifestyle without earned income. The standard formula is: FIRE Number = Annual Spending ÷ Withdrawal Rate. Using a 4% rate, someone spending $60,000 per year needs $1,500,000. Someone spending $40,000 per year needs $1,000,000. Adjust your withdrawal rate in this FIRE calculator to model more conservative or aggressive scenarios based on your expected retirement length and risk tolerance.
Setting Expected Returns in Your FIRE Calculator
One of the most important inputs in any FIRE calculator is the expected real return for each asset class. A real return is your nominal return minus inflation. Historically, U.S. stock index funds have delivered a real return of approximately 7% per year over long periods. Bonds have delivered lower real returns of around 1–2%. Alternative assets like Bitcoin carry much higher volatility and uncertain long-term return profiles. We recommend using conservative estimates in the FIRE calculator to stress-test your plan — most FIRE practitioners use 5–7% real return for equities as a baseline. Remember that sequence of returns risk matters: retiring into a market downturn can significantly impact your portfolio even if long-term averages hold.
Ready to find your number? Use the asset selection page to build your personalized FIRE calculator, then review your results and adjust your savings rate, spending target, or asset mix until you find a path to financial independence that works for your life.
Ready to find your number? Use the asset selection page to build your personalized FIRE calculator, then review your results and adjust your savings rate, spending target, or asset mix until you find a path to financial independence that works for your life.