Calculators for Early Retirees (FIRE)
Financial Independence, Retire Early runs on a handful of numbers - get them right and the timeline gets real.
Pursuing financial independence and early retirement means treating your savings rate as the single most important lever you control, and understanding exactly how compounding turns consistent contributions into a portfolio that can eventually replace a paycheck. The math is simple in outline - the classic target is 25 times your annual expenses, assuming a 4% withdrawal rate - but the details matter enormously in practice. A retirement that might last 40-50 years behaves very differently from a traditional 20-30 year retirement, which means withdrawal rate assumptions, cash reserves, and healthcare planning all need more conservative treatment than standard retirement advice assumes. Sequence-of-returns risk - a bad market in your first few years without a paycheck - can do outsized damage that a working household would simply absorb by continuing to earn. The calculators below are built for exactly this kind of planning: projecting how a given savings rate compounds toward your FIRE number, comparing tax-advantaged and taxable accounts for the years before traditional retirement age, sizing a larger-than-normal cash buffer to avoid selling assets in a downturn, and tracking net worth against your target consistently over time.
Compound Interest Calculator
See exactly how a given savings rate and timeline compound toward your FIRE number.
Retirement Savings Calculator
Project toward a 25x, 28x, or 33x expenses target depending on your chosen withdrawal rate.
Net Worth Calculator
Track progress toward your FIRE number consistently across every account.
Savings Goal Calculator
Set a target that includes healthcare buffers and sequence-of-returns risk, not just the bare 25x.
Emergency Fund Calculator
Size a larger cash reserve so a market downturn early in retirement doesn't force you to sell assets.
Salary Tax Calculator
Know your real take-home pay so you can maximize the savings rate that drives your timeline.
401(k) vs IRA Explained
Understand how each account behaves before and after traditional retirement age.
What Is Compound Interest?
The foundational concept behind every FIRE projection, explained clearly.
Frequently Asked Questions
What is the FIRE number and how do I calculate mine? +
The classic FIRE number is 25x your annual expenses, based on a 4% withdrawal rate. Some early retirees use a more conservative 28-33x. Project toward either with the Retirement Savings Calculator.
How does compounding affect how early I can retire? +
Compounding is the entire engine behind FIRE. The Compound Interest Calculator shows how a slightly higher savings rate can shift a retirement date meaningfully.
What withdrawal rate is safe for an early retirement? +
The 4% rule assumed a 30-year horizon. Many FIRE planners use 3-3.5% given a longer retirement. This is illustrative guidance only, not investment advice.
How big of an emergency fund does an early retiree need? +
Larger than a typical household - many keep 1-2 years of expenses in cash to avoid selling assets in a downturn. Model it with the Emergency Fund Calculator.
Should I max my 401(k) or invest in a taxable brokerage account for FIRE? +
Many build a taxable bridge while still capturing employer match benefits. See 401(k) vs IRA Explained for how each account behaves before traditional retirement age.
How does net worth tracking help with a FIRE plan? +
FIRE is fundamentally a net worth target relative to spending. Use the Net Worth Calculator to keep a running total and catch drift early.
What's the biggest risk people underestimate with early retirement? +
Healthcare costs and sequence-of-returns risk. Build both into your Savings Goal Calculator target rather than the bare minimum 25x figure.