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Retirement & FIRE

FIRE Number India: How to Calculate It Step by Step

Calculate your FIRE number in India step by step: inflate today's costs, treat medical costs separately, pick a withdrawal rate and know what to exclude.

Updated · 7 min read

Your FIRE number is the corpus you need on the day you stop working so that your investments can pay for your life from then on. It sounds like one big scary figure. In practice it is four small calculations stacked together, and each one is something you can reason about.

This guide walks through those calculations with a worked example in rupees, and is clear about which costs belong in the number and which do not.

Key takeaways

  • FIRE number = expenses in your first retirement year ÷ withdrawal rate, plus lump sums for loans and big goals.
  • Inflate today’s expenses to your retirement year; at 6% inflation, costs roughly double every 12 years.
  • Grow healthcare at a higher rate than everything else and keep a buffer for it.
  • Leave home loan EMIs and kids’ education out of the “×30” part; add them as separate lump sums.
  • A 3–3.5% withdrawal rate (about 28–33× expenses) is a more defensible Indian starting point than the US 4% rule.

The formula in one line

FIRE number = (annual expenses at retirement ÷ withdrawal rate) + lump sums you still owe or will need

Everything else in this guide is about getting each part right.

Step 1: Write down what you actually spend today

Use your last 12 months of bank and card statements, not a guess. Guesses tend to run low, because irregular costs (insurance, travel, gadgets, festivals, repairs) are easy to forget.

Split your spending into buckets so you can treat each one correctly:

Bucket Examples How it goes into the FIRE number
Core living costs Groceries, utilities, transport, phone, domestic help, school fees for now Inflate at general inflation, then multiply
Housing running costs Society maintenance, property tax, repairs, rent if you rent Inflate at general inflation, then multiply
Healthcare Health insurance premium, medicines, check-ups Inflate at a higher rate, then multiply, plus a buffer
Lifestyle Travel, dining, hobbies, gifts Inflate at general inflation, then multiply
Irregular big items Car replacement, home renovation Convert to a yearly average and include
Ending before retirement Home loan EMI, child’s school fees ending before you retire Leave out of the multiple; handle separately
Savings and investments SIPs, PPF deposits Leave out; you will stop saving

Step 2: Inflate your expenses to the year you retire

Prices rise every year, so today’s ₹55,000 a month will not buy the same life in 12 years. The formula is simple:

Future expense = today’s expense × (1 + inflation)^years to retirement

Many Indian planners use 6% as a working assumption for general inflation. That is an assumption, not a forecast, so test 5% and 7% too and see how much your number moves.

Step 3: Treat healthcare separately

Healthcare is the cost most likely to grow faster than everything else, and it tends to rise as you age. Track it as its own line and grow it at a higher assumed rate, for example 9–10%.

To see why this matters: in our worked example below, health costs at retirement are about ₹1.26 lakh a year. Twenty years into retirement, those costs would be about ₹4.03 lakh a year if they grew at 6%, and about ₹8.45 lakh a year if they grew at 10%. A single multiple applied to your first-year spending does not capture that gap, which is why a separate health buffer is worth having.

Step 4: Choose a withdrawal rate

The withdrawal rate is the share of your corpus you plan to take out in the first year, then raise with inflation. Dividing by the rate is the same as multiplying by a “years of expenses” figure:

Withdrawal rate Multiple of first-year expenses
4% 25×
3.5% 28.6×
3.33% 30×
3% 33.3×

The 4% figure comes from US research on 30-year retirements. With Indian inflation assumptions and longer early retirements, 3–3.5% is a more defensible starting point. Our guide to the safe withdrawal rate in India shows the numbers behind that.

Step 5: Add lump sums for anything the multiple does not cover

Some costs do not fit the “expenses × 30” shape:

  • Outstanding loans. An EMI is a fixed payment that ends on a known date. Multiplying it by 30 overstates your need. Instead, find the principal still outstanding on your retirement date and add it.
  • Big goals after retirement. A child’s higher education or wedding, or a planned home renovation. Inflate each to its target year and add it.
  • An emergency and health buffer. A separate pot for a hospital bill that insurance does not fully cover.

A worked example

Meet a couple, both 33, who want to stop full-time work at 45. That gives 12 years to retirement.

Their inputs:

  • Core household spending today, excluding the home loan EMI and health costs: ₹55,000 a month (₹6.6 lakh a year).
  • Health insurance premium plus typical out-of-pocket medical costs today: ₹40,000 a year.
  • Home loan EMI of ₹35,000, which will still have 84 months (7 years) left when they turn 45. Loan rate 8.5%.
  • A child’s higher education estimated at ₹25 lakh in today’s money, needed in 10 years.

Assumptions: general inflation 6%; healthcare inflation 10%; education cost inflation 8%; withdrawal rate 3.33% (30×).

Expenses at retirement

Line Today At 45 (after 12 years)
Core spending ₹6.60 lakh/yr ₹13.28 lakh/yr (at 6%)
Healthcare ₹0.40 lakh/yr ₹1.26 lakh/yr (at 10%)
Total ₹7.00 lakh/yr ₹14.54 lakh/yr (about ₹1.21 lakh/month)

Notice how their ₹55,000-a-month lifestyle needs about ₹1.21 lakh a month in 12 years. That is inflation, not lifestyle creep.

Applying the withdrawal rate

Withdrawal rate FIRE number at 45
4% (25×) ₹3.63 crore
3.5% (28.6×) ₹4.15 crore
3.33% (30×) ₹4.36 crore
3% (33.3×) ₹4.85 crore

At 30×, the core FIRE number is about ₹4.36 crore in the rupees of the year they retire. In today’s rupees, that is about ₹2.10 crore (₹7 lakh × 30), which is a more intuitive way to track progress year by year.

The lump sums

  • Home loan. With a ₹35,000 EMI, 84 months left and an 8.5% rate, the outstanding principal at 45 would be about ₹22.10 lakh. They can either add that to the FIRE number or plan to clear it before retiring.
  • Education. ₹25 lakh today, inflated at 8% for 10 years, is about ₹53.97 lakh. Because it falls at 43, before they retire, it is a separate pre-retirement goal with its own SIP, not part of the FIRE number. If it fell after 45, they would add it.

Their total target at 45: about ₹4.36 crore + ₹0.22 crore for the loan = about ₹4.58 crore, plus a separate health and emergency buffer, with the education goal funded on its own track.

What to include and exclude: quick reference

Include in the “×30” part Add as a lump sum Leave out
Everyday living costs Outstanding loan principal at retirement SIPs and other savings
Housing maintenance and property tax Post-retirement education or wedding goals Work-only costs (commute, work clothes) if they will genuinely stop
Health insurance and out-of-pocket costs Health and emergency buffer EMIs that end before you retire
Travel, hobbies, gifts Planned big renovation Income tax on a salary you will no longer earn
Averaged car and gadget replacement

One caution on “leave out”: tax does not disappear in retirement. If your withdrawals or investment income will be taxed, gross up the spending you need to cover it.

Common mistakes

  • Using today’s expenses without inflating them. This is the most common error and can understate the number by half or more over a 12–15 year runway.
  • Multiplying an EMI by 30. It overstates the target and can push your retirement out by years.
  • Assuming expenses fall a lot in retirement. Some costs drop; healthcare, travel and helping family often rise.
  • Forgetting irregular costs. Average them into a monthly figure.
  • Never revisiting the number. Recalculate every year with actual spending and update the inputs.

What to do next

This is general education to help you build your own estimate, not personalised financial advice.

Frequently asked questions

How do I calculate my FIRE number in India?

Start with your yearly expenses today, excluding costs that will end before you retire. Inflate them to your retirement year, ideally growing healthcare at a higher rate than other spending. Divide the result by your chosen withdrawal rate, for example 3.33%, which is the same as multiplying by 30. Then add separate amounts for any outstanding loans and big one-off goals.

Is 25 times expenses enough for FIRE in India?

25 times expenses corresponds to a 4% withdrawal rate, which comes from US research on 30-year retirements. With Indian inflation assumptions and longer early retirements, many planners use 28 to 33 times annual expenses instead, which corresponds to roughly a 3.5% to 3% withdrawal rate. The right multiple depends on your horizon, flexibility and other income.

Should I include my home loan EMI in my FIRE number?

Usually not as a recurring expense. An EMI ends on a known date, so multiplying it by 30 overstates what you need. Instead, find the outstanding principal on your planned retirement date and add that as a lump sum, or plan to clear the loan before you retire. Keep property tax, maintenance and repairs in your recurring expenses.

How should I account for medical costs in a FIRE number?

Separate health spending from the rest. Include your health insurance premium and typical out-of-pocket costs, and grow them at a higher assumed rate than general inflation, for example 9 to 10% instead of 6%. Premiums usually rise with age too, so a separate health buffer on top of the main number is a sensible extra layer.

Do I include my children's education in my FIRE number?

Treat it as a separate goal with its own target date and inflation rate, not as an everyday expense multiplied by 30. Estimate the cost in today's rupees, inflate it to the year it is needed and fund it separately. If the expense falls after you retire, add its inflated value to your FIRE number as a lump sum.

What inflation rate should I use for my FIRE number?

Many Indian planners use about 6% for general expenses as a working assumption, with a higher rate for healthcare and education. It is safer to test a range, for example 5%, 6% and 7%, and see how much your number moves. A plan that only works at the low end of the range needs more margin.