Every Indian retirement article opens with the same fortune-cookie answer: "25 times your annual expenses!" Then the writer cites Bengen, mentions the S&P 500, and ends with a Vanguard-flavoured pat on the head.
We are not in Kansas. We are in Koramangala where the rent doubles every five years, the dosa costs ₹140, and your mother-in-law expects you to fund three weddings before you turn fifty. The 25× rule was built for a country that runs at 2% inflation and where a knee replacement is covered by Medicare. Neither of those things describes India.
So let's do the actual math. The honest, year-by-year math. The kind that survives a 30-year inflation curve, a healthcare bill, and your dad's sudden interest in cryptocurrency.
The number, before the explanation
For a household with ₹60,000/month in current expenses, retiring at 60, planning through 90, with 6% inflation and 8% post-retirement returns: you need roughly ₹4.5–6 crore in today's rupees.
₹6 crore. Not ₹2 crore (the figure your insurance agent quoted). Not ₹15 crore (the figure the FIRE Twitter account quoted). Six. And that's if everything goes right.
The corpus you need is not a single number. It's a function — of when you stop, how long you live, how fast prices move, and how badly your portfolio behaves the year after you retire.
Why ₹6 crore — the components
1. Inflated future expenses
At 6% inflation, your ₹60,000/month today becomes ₹1.92 lakh/month at age 60 (assuming you're 30 now). Multiply by 12 to get the annual outflow, and you're looking at ₹23 lakh/year in year-one of retirement. That number then grows for the next 30 years.
Year 1 of retirement: ₹23L. Year 15: ₹55L. Year 30 (age 90): ₹1.3 crore. Per year. To buy the same dosa-and-rent lifestyle you have now.
2. Healthcare — the silent corpus-killer
Indian healthcare inflation runs at 10–14%, well above general CPI. A ₹3 lakh hospitalisation today is ₹50 lakh in 30 years. A single major procedure at age 75 can wipe out 20% of a "comfortable" corpus.
Most calculators ignore this. Most simulations don't flag it. Then you retire, get sick, and discover that the "25× rule" assumed you would politely die at 75 before the bills arrived.
3. Sequence-of-returns risk
If the market crashes 30% the year you retire (this happens — see 2008, 2020), and you start withdrawing right into the drawdown, your corpus may never recover. This is the bear that eats more retirees than anything else. The simulator on this site models it; the back-of-the-envelope formula does not.
4. Lifestyle creep you don't see coming
Retirees in India who spent ₹60K/month at 55 routinely spend ₹1L+ at 65 — not because of inflation, but because of travel, grandchildren, medical second opinions, and the slow upgrade from Maruti to MG. Modeling expenses as static is fiction.
The corpus formula nobody tells you
The actual corpus you need is:
Corpus = Σ (inflated annual expense in year t) / (1 + post-retirement return)^t
Summed from year-of-retirement through year-of-planning-end. This is what the Cockroach Money engine computes month by month. There's no closed-form "multiply by 25" that survives 30+ years of compounding.
Run the retirement corpus calculator with your real numbers. If the result horrifies you, you're finally seeing the math everyone else hid.
What changes the answer the most
- Retirement age. Pushing retirement from 60 to 62 typically reduces the required corpus by 15–20%. The two extra years of contributions plus two fewer years of drawdown compound brutally in your favour.
- Inflation assumption. Moving from 6% to 8% inflation can double the corpus required. Indian inflation has run between 5–7% for the last decade; assume 6% as a base, stress-test at 8%.
- Post-retirement returns. A 7% vs 9% withdrawal-phase return shifts the answer by 25–40%. Be conservative — retirees should not be holding 80% equity.
- Healthcare buffer. Set aside 10–15% of corpus as a separate health bucket, indexed to medical inflation. If you don't need it, your heirs do.
The honest checklist
Before you trust any retirement number — yours, your advisor's, or some PDF you downloaded from a robo-advisor — make sure the math:
- Inflates expenses every year (not a flat assumption)
- Models the withdrawal phase separately from the accumulation phase
- Uses Indian inflation defaults (~6%) and Indian return defaults (~12% pre-retirement, ~8% post)
- Accounts for taxation on withdrawals (LTCG, slab)
- Plans to age 90 minimum
- Includes at least one milestone outflow (because your kid's wedding is real)
- Tells you the year your corpus would go to zero if things tilt against you
If your current plan doesn't do those seven things, it's not a plan. It's a vibe.
The cockroach version of the answer
A cockroach doesn't plan to live well. It plans to survive. The right retirement corpus is the one that survives a market crash the year you retire, a hospital bill at 75, your kid asking for a US Master's programme, and one extra decade of life nobody told you to plan for.
That's usually ₹4.5–6 crore for the median Indian middle-class household, in today's rupees. More if you retire before 55. More if you live in Mumbai. More if you have dependents.
Plug your numbers into the corpus calculator, then run the full simulator to see the year-by-year cash flow. If the corpus survives to 90, you're a cockroach. If it goes to zero at 78, you're a slipper's lunch.
Survive the system. Plan your escape. The math is the only weapon you have.