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FIRE number calculator

Estimate the target portfolio needed to support a desired annual income using your chosen withdrawal rate.

INPUTSEnter your figures
METHODOLOGY

Transparent calculation

Estimate the target portfolio needed to support a desired annual income using your chosen withdrawal rate.

Calculation engineRETIREMENT · TARGETPreset assumptions can be adjusted in the calculator when applicable.
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Retirement target balance→Retirement age from target calculator→Retirement income gap calculator→Capital required for income→Present value of retirement income→Retirement savings gap→
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Results are mathematical estimates based solely on the values entered. They are not financial, investment, tax or legal advice, nor an offer or recommendation of any financial product.

GUIDE & CONTEXT

How FIRE number calculator works

What it calculates

Estimate the target portfolio needed to support a desired annual income using your chosen withdrawal rate.

Formula and methodology

Use it for educational simulations and mathematical comparisons, not as financial advice.

RETIREMENT · TARGET

Practical example

Reproducible example: use this page’s initial values (Desired annual income: $30,000 · Withdrawal rate: 4%) and press Calculate. Then change one variable at a time to see how it affects the result.

Factors that change the result

The result changes whenever the input variables change. Compare multiple scenarios and keep units, rates and periods consistent.

Context: This tool belongs to the Retirement category and is designed to solve a specific mathematical intent using user-entered values.
NEXT STEP

Continue the financial workflow

These tools cover calculations that often come before or after this step.

SavingsRequired monthly savings contributionInvestmentsInvestment future valuePersonal FinanceNet worth calculatorInterestAnnual compound interest
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Key calculators in this category

Traditional vs Roth calculatorPension present value calculatorRetirement target balance

Frequently asked questions

What does FIRE number calculator calculate?

Estimate the target portfolio needed to support a desired annual income using your chosen withdrawal rate. Estimate the target portfolio needed to support a desired annual income using your chosen withdrawal rate.

What values do I need to enter?

Enter only the values requested by this calculator’s form. The initial values are examples and can be replaced with your own assumptions.

What can change the result?

The result changes whenever the input variables change. Compare multiple scenarios and keep units, rates and periods consistent.

Is the result financial advice?

No. FinanceCalc performs mathematical calculations using the values you enter. It does not recommend products, investments, loans or specific financial decisions.