FIRE Calculator

What is FIRE?

FIRE — Financial Independence, Retire Early — is the idea of accumulating enough invested wealth so that your portfolio's returns cover your living expenses indefinitely. The key insight: once your corpus reaches 25–30× your annual expenses, you can stop needing a salary. Your money works for you.

The concept is not about retiring at 25 and lying on a beach. Most FIRE practitioners in India continue doing meaningful work — they just work from a position of choice, not necessity. Financial independence is the goal; early retirement is optional.

The FIRE number formula

Why 3.33% SWR, not the 4% rule?

The 4% Safe Withdrawal Rate was established by William Bengen in 1994, studying US market data from 1926 to 1992. The subsequent Trinity Study (Cooley, Hubbard & Walz, 1998) reinforced this: a 50/50 equity-bond portfolio could sustain 4% withdrawals for 30 years with 95% probability using US historical returns.

For India, this needs adjustment. Indian inflation has historically run at 5–7% (versus 3–4% in the US). An Indian FIRE aspirant retiring at 40 may need the portfolio to last 50+ years, not 30. For these reasons, most SEBI-registered advisors and personal finance researchers in India recommend a 3–3.33% SWR (25–30× expenses), building in a safety margin. That said, if your portfolio earns 8–10% post-FIRE, even a 4–5% withdrawal is mathematically sustainable — the key variable is your actual returns.

The savings rate is the only lever that matters early

Your path to FIRE is almost entirely determined by your savings rate — the percentage of income you invest. At a 10% savings rate, FIRE takes ~40+ years. At 50%, it takes about 17 years. At 70%, just 8.5 years. This relationship was popularised by Mr. Money Mustache and later validated by Vanguard's 2023 research on retirement readiness. The math: higher savings rate compresses the accumulation phase and simultaneously trains you to live on less (which lowers your FIRE number).

Frequently Asked Questions

What return should I assume on my FIRE corpus post-retirement?

Most FIRE planners use 7–8% for a conservative balanced portfolio (60% equity index funds, 40% debt). If you're very conservative (FDs and debt-heavy), use 6–7%. The gap between your portfolio return and your withdrawal rate determines how long your money lasts — and whether it actually grows despite withdrawals. At 8% return and 3.33% withdrawal, your corpus keeps growing even as you draw from it.

Should I include my EPF and NPS in the FIRE corpus?

Yes, but with timing caveats. EPF is accessible only at 58 (or on job change / medical emergencies). NPS full corpus access is at 60. If you FIRE at 40, these assets are locked for 18–20 more years. Include them in your plan, but make sure your liquid corpus (mutual funds, stocks) is sufficient to bridge the gap until these unlock.

What about home loans, children's education, and weddings?

These are FIRE killers if unplanned. A ₹1 crore home loan costs you ₹1.5–2 crore over its lifetime (principal + interest). A wedding or child's education abroad can be ₹50L–₹1.5 crore. These should be modelled as one-time withdrawals from your FIRE corpus, or as separate savings goals funded before your FIRE date. Use the EMI calculator for home loans and factor large goals into your SWR calculations.

Lean FIRE vs Fat FIRE — what's the difference?

Lean FIRE means retiring on a frugal budget (₹40,000–60,000/month for a couple in a tier-2 city). Fat FIRE is retiring with the lifestyle you currently have, or better (₹1.5L+/month). Most Indian FIRE aspirants target somewhere in between — Barista FIRE (partial income from a low-stress job covers base expenses, investments cover the rest) is increasingly popular as a middle path.