Ask anyone selling life insurance how much cover you need and you'll get the same answer: ten times your annual income. It's printed in brochures, baked into online calculators, repeated in every sales conversation. It's popular for one reason — it takes four seconds and requires knowing nothing about you. Last year I did the real calculation for a 34-year-old client in Ahmedabad, and the four-second answer turned out to be short by ₹55 lakhs. I want to show you the full working, because the method matters more than his particular number.
His profile, anonymised but real: age 34, annual income ₹12L, wife not currently earning, two children aged 6 and 3, a home loan with ₹34L outstanding, household spending of about ₹55,000 a month. The 10x rule says ₹1.2 crore and you're done. Here's what the actual arithmetic says.
Step one: what the family spends without him
Of that ₹55,000 a month, roughly ₹10,000 is his own consumption — commute, phone, his share of food, personal spending. If he's gone, the family's running cost is about ₹45,000 a month, or ₹5.4L a year, rising with inflation for at least the next 25 years while the kids grow up and his wife reaches old age. A corpus that can pay out an inflation-adjusted ₹5.4L a year for 25 years, invested conservatively — because a widow managing her family's only money will not, and should not, take equity risk with all of it — needs to be around ₹1.1 crore.
Notice something: we've covered nothing but groceries and school fees so far, and we've already nearly consumed the entire 10x number.
Step two: debts die with you only if they're paid for
The ₹34L home loan doesn't politely disappear. Either the family keeps paying an EMI out of a corpus we just sized without it, or they sell the house they live in. Neither is acceptable, so the loan goes into the cover: add ₹34L. If you have a car loan or a personal loan, those go in too. This line item is why two people with identical incomes can need wildly different cover — the 10x rule can't see your liabilities, and your liabilities are exactly what your family inherits.
Step three: the goals that don't cancel
His two kids will hit college in roughly 12 and 15 years. A decent professional degree costs ₹15–20L per child in today's money, and education inflation in India runs hotter than general inflation. We budgeted ₹40L combined in today's terms. His death wouldn't cancel their admissions. Add ₹40L.
Running total: ₹1.1 crore + ₹34L + ₹40L = ₹1.84 crore.
Step four: subtract what already exists
He had about ₹9L in mutual funds and ₹3L in EPF — ₹12L of real assets, so subtract that. He also had ₹40L of employer-provided group cover, and we subtracted none of it. Group cover evaporates the day you leave the job, and people change jobs at the worst times — layoffs, health issues, the exact moments insurability gets worse. Counting employer cover in this calculation is building your family's safety net out of someone else's HR policy.
Final number: ₹1.84 crore minus ₹12L, call it ₹1.75 crore. Against the brochure's ₹1.2 crore — a 45% shortfall that his family would have discovered at the one moment nothing could be done about it. At his age the extra ₹55L of term cover cost about ₹6,000 more a year. That's the entire price of closing the gap: ₹500 a month.
The rule fails in both directions
To be fair to the arithmetic: 10x oversells too. A 41-year-old client — no loans, no children, working spouse who out-earns him, ₹80L already invested — needed barely 4x his income. The multiplier isn't conservative or aggressive. It's just blind. It's a number designed to end a sales conversation quickly, in whichever direction ends it.
The real method is four lines: family's living expenses capitalised, plus every outstanding loan, plus unavoidable future goals, minus existing assets. It takes half an hour, and it's exactly the half hour we spend in every term insurance conversation before anyone mentions a product. If whoever's selling you cover hasn't asked about your loans and your kids' ages, they're not calculating your need. They're calculating their premium.
This is a general account of a real, anonymised case for educational purposes and isn't a substitute for a calculation based on your own income, liabilities, and dependants.