Term Insurance Cover: The Income-Replacement Math, Not a Round Number

“Take 1 crore cover.” It is the most repeated line in Indian personal finance, and it is a psychological number, not a financial one. One crore feels large. It rhymes with “crorepati.” It sits neatly in a WhatsApp forward. None of that has anything to do with whether it would actually keep your family in their current life if you died tomorrow.

The right cover is not a round figure you pick because it sounds reassuring. It is a number you calculate. And when you calculate it properly - replacing the income your family loses, clearing what you owe, funding the goals you promised, and subtracting what you already have - most earning Indians land somewhere between Rs. 1.75 crore and Rs. 3 crore. The round Rs. 1 crore is usually a serious shortfall dressed up as prudence.

Here is the method, worked end to end with real numbers.

The rule of thumb, and where it breaks

The standard advice one notch above “take 1 crore” is the multiplier: buy 10 to 15 times your annual income. It is a fine napkin estimate and far better than a round number. But it breaks in both directions, and it is worth understanding why before you trust it.

It overshoots when it multiplies your gross income. Your family does not need to replace your gross salary. They do not need the part you paid in tax, the part you personally consumed (your commute, your phone, your share of food and travel), or the part you were saving. They need to replace the expenses that continue after you are gone.

It undershoots when your remaining working years are long or your liabilities and goals are large. A 30-year-old with 30 years of earning ahead and a fresh home loan is not well described by the same 12x that fits a 50-year-old with a paid-off house.

The multiplier hides the two things that actually drive the answer: how many years your family needs support, and what real return the payout can earn while inflation eats at it. The income-replacement method puts those back on the table.

The core idea: replace the expense stream, not the salary

Think of it as a question. If your income vanished today, how large a lump sum would your family need so that, invested sensibly, it throws off enough every year - rising with inflation - to run the household for as long as they depend on it?

That is a present-value calculation, not a multiplication. Three inputs decide it:

1. The annual expense the family must keep meeting. Start from household running costs and remove what disappears with you. As a rule, a primary earner’s death removes 20-30% of household spending (their personal consumption). Keep the rest.
2. The number of years support is needed. Usually until you would have retired, or until dependents become independent, whichever framing fits. Longer horizon, larger corpus.
3. The real return the corpus earns. This is the killer input. A bereaved family should not park a life insurance payout in equity and hope. Assume a conservative post-tax return - say 7% - against 6% inflation. That is a real return of only about 1%. Money barely outruns prices, so the corpus has to be large.

The formula for the lump sum, when withdrawals grow with inflation each year, is:

Corpus = C / (i - g) x [ 1 - ((1 + g) / (1 + i))^N ]

C = first year's annual expense to replace
i = nominal post-tax return on the corpus (e.g. 7%)
g = inflation (e.g. 6%)
N = number of years support is needed

Do not let the formula intimidate you. It just says: a rupee stream that grows with inflation for N years is worth a specific lump today, and because your money only earns about 1% above inflation, that lump is close to the full undiscounted sum.

Worked example: Rahul, 35, one income, two kids

Meet Rahul. He is 35, the sole earner, married with two children aged 6 and 3, and his parents are partly dependent. His situation:

Step 1 - Income replacement corpus.

The family keeps spending Rs. 10.8 lakh minus Rahul’s personal Rs. 2.7 lakh, so about Rs. 8.1 lakh a year in today’s money. Using i = 7%, g = 6%, N = 25:

i - g = 1% = 0.01
(1.06 / 1.07)^25 = 0.79   (approx)
Corpus = 8,10,000 / 0.01 x (1 - 0.79)
       = 8,10,000 x 100 x 0.21
       = Rs. 1,70,10,000  (approx Rs. 1.70 crore)

That is the income-replacement piece alone: roughly Rs. 1.7 crore just to keep the lights on for 25 years. Notice it is already well past the Rs. 1 crore default, and we have not touched debt or goals yet.

Step 2 - Liabilities. Your family should never inherit an EMI. Add every outstanding rupee of debt so they can clear it immediately:

• Home loan: Rs. 55,00,000
• Car loan: Rs. 6,00,000
• Total: Rs. 61,00,000

Step 3 - Goals. These are lump sums your death should not cancel. In today’s money, roughly:

• Elder child’s higher education: Rs. 30,00,000
• Younger child’s higher education: Rs. 30,00,000
• A buffer toward children’s weddings: Rs. 20,00,000
• Total: Rs. 80,00,000

(These are stated in present value. Education inflation runs high, but so does the corpus you are setting aside for them, so today’s-money figures are a reasonable proxy. If you want to be stricter, inflate each goal to its target year and discount back.)

Step 4 - Subtract existing assets. Money the family already has reduces the cover you must buy:

• EPF + PPF + mutual funds + FDs: Rs. 40,00,000
• Employer group term: treat cautiously. It vanishes the day Rahul changes jobs, so a careful planner subtracts none of it or at most half. We subtract nothing and treat it as a bonus.

Putting it together:

Rahul needs about Rs. 2.75 crore of cover. He was about to buy Rs. 1 crore because it “sounded like enough.” He would have left his family short by roughly Rs. 1.75 crore - more than the gap he thought he was closing.

Why the answer swings so hard: the two assumptions that matter

Two inputs move this number more than anything else, so it is worth seeing their effect directly.

Years of support. The corpus scales strongly with the horizon. Same Rs. 8.1 lakh annual need, same 7% and 6%:

A 30-year-old with a young family and a 30-year horizon needs meaningfully more income-replacement cover than a 45-year-old on the same expenses, purely because of time.

The real return you assume. This is the input people get most wrong, usually by being too optimistic. If you assume the payout earns 10% (equity-like) against 6% inflation, the corpus looks small and comforting. But a family that just lost its earner should not bet its survival on equities. Hold the assumption conservative:

At a realistic 0-1% real return, the corpus is large. Assume a rosy real return and you will underinsure. When in doubt, use the lower real return - the cost of being wrong is your family running out of money in year 18 of a 25-year need.

The full method, in one line

For your own number, work through:

Cover = PV of (household expenses minus your consumption, for N years)
      + all outstanding liabilities
      + present value of major goals
      - existing investable assets (be strict about group cover)

If you do not want to run the growing-annuity formula, a defensible shortcut for the first term is: annual expense to replace, multiplied by roughly 20-22 for a 25-year horizon at low real returns, then add liabilities and goals and subtract assets. That is the multiplier done honestly - applied to the expense your family keeps, not your gross salary, and with the horizon built in.

The objection you are about to raise: the premium

The reflex against a bigger number is “I cannot afford the premium.” The maths says otherwise, because term insurance is priced per rupee of cover and gets dramatically cheaper the more you buy relative to protection. Approximate annual premiums for a healthy 35-year-old non-smoker, 25-year term, from a top pure-term plan:

Going from the Rs. 1 crore default to Rahul’s actual Rs. 2.75 crore need costs roughly Rs. 17,000-21,000 more per year - about Rs. 1,500 a month. For nearly tripling the protection. There is no other financial product where the marginal rupee of security is this cheap. Underinsuring to save Rs. 1,500 a month is a bad trade measured against the hole it leaves.

Two practical notes on keeping it cheap and adequate:

• Buy early. The same cover at 30 is 30-40% cheaper than at 40, and the premium is locked for the full term. Age, not markets, is what makes term insurance expensive.
• Do not buy return-of-premium. It roughly doubles the cost to hand back your own money decades later with no real return. Buy pure term and invest the difference.

What actually kills this calculation

Even people who run the numbers get tripped up by the same few things:

• Counting group term as your cover. It ends the day you leave the job, exactly when you might be least insurable. Treat it as a bonus, not the foundation.
• Freezing the number forever. A cover sized at Rs. 60,000-a-month expenses in 2020 is short today. Redo this after any income jump above 30%, a new loan, marriage, or a child.
• Ignoring the non-earning spouse. If a spouse runs the household full time, replacing that labour (childcare, logistics, cooking) has a real cost. IRDAI permits cover on a non-earning spouse based on the earner’s income.
• Being optimistic about returns. Covered above, and it is the most expensive mistake. Bereaved capital should be assumed to earn little above inflation.

Bottom line

Stop picking a round number. Run the four-part method: present value of the expense stream your family keeps (not your gross salary), plus every liability, plus your funded goals, minus what you already own - with a deliberately conservative real return. For most single-income urban Indian families with a home loan and young children, the honest answer is Rs. 2 crore to Rs. 3 crore, not Rs. 1 crore. The extra premium is a four-figure monthly cost; the shortfall is measured in your family’s standard of living for two decades. Do the sum once, buy the cover it points to, and revisit it every few years.

All figures here are illustrative and based on representative premiums and reasonable return and inflation assumptions. They are not investment advice - run the calculation with your own numbers.