How to Choose the Right Health Insurance Sum Insured in India

For most families in a metro city today, a health cover of 10 to 15 lakh is a sensible starting point, while a smaller town might be comfortable with 5 to 10 lakh. The honest answer, though, is that the right sum insured depends on where you live, how many people the policy covers, their ages, and how fast hospital bills are rising. This guide walks you through a simple way to arrive at a number you can actually defend, rather than guessing.

Why 5 lakh may no longer be enough

For years, a 5 lakh sum insured was the comfortable default. It covered most planned surgeries and short hospital stays without much worry. That math has quietly stopped working.

A single planned surgery in a good private hospital in a metro — say a knee replacement, an angioplasty, or treatment for a serious infection that needs an ICU bed — can run well past 5 lakh once you add the room, the surgeon, consumables, medicines and post-operative care. A cancer diagnosis or a long ICU stay can comfortably cross 15 to 20 lakh. If your entire family shares a single 5 lakh floater and two people fall ill in the same year, that cover can vanish in one admission.

The point is not to frighten you. Most years, nothing major happens. But health insurance exists precisely for the rare, expensive year — and on that one year, 5 lakh increasingly leaves a gap you would have to fund from savings.

Medical inflation in India explained

Medical inflation simply means that the cost of treatment rises faster than the price of everyday goods like groceries or fuel. The room you paid 8,000 a day for a few years ago may cost noticeably more now, and the same is true of diagnostics, implants and specialist fees.

This matters for two reasons. First, a sum insured that looks generous today will feel thin in seven or eight years. A 10 lakh cover bought today may, in real terms, behave like a much smaller cover a decade from now. Second, it is the strongest argument for buying a slightly higher sum insured than you think you need right now, and for choosing plans that reward you for staying healthy.

Many modern plans from insurers such as HDFC ERGO, Star Health, Niva Bupa and Care Health offer a no-claim bonus — your sum insured grows, sometimes up to 100 percent or more, for every claim-free year. A 10 lakh base cover can quietly become 15 or 20 lakh over time without a single rupee of extra premium. When you compare policies, treat this bonus as a built-in answer to medical inflation, not as a marketing line.

Sum insured by city tier and hospital costs

Where you live changes the math more than almost anything else. The same procedure costs very differently in a metro versus a smaller town, mostly because of room rents, doctor fees and the kind of hospitals available.

The table below is illustrative only — actual bills vary by hospital, room category and your exact condition — but it gives you a feel for the differences.

City tier	Example cities	Typical major-treatment bill	Suggested base sum insured
Tier 1 (metro)	Mumbai, Delhi NCR, Bengaluru	6 to 20 lakh and above	10 to 15 lakh
Tier 2	Pune, Jaipur, Kochi, Indore	4 to 12 lakh	7 to 10 lakh
Tier 3 (smaller towns)	District towns, smaller cities	3 to 8 lakh	5 to 7 lakh

Two practical notes. First, if you live in a Tier 2 or Tier 3 town but would travel to a metro for serious treatment — which many families do for cancer care or complex surgery — plan your cover for the metro, not your home town. Second, always confirm the insurer has a strong cashless hospital network near you, so you are not paying upfront and waiting for reimbursement during a stressful admission.

The role of super top-up plans

This is where many families find the smartest value. A super top-up plan is an inexpensive cover that only kicks in after your bills cross a chosen threshold, called the deductible, in a policy year.

Here is how it works in plain terms. Suppose you hold a 10 lakh base policy and add a 40 lakh super top-up with a 10 lakh deductible. Your base plan handles the first 10 lakh of claims in the year. Anything beyond that — up to 40 lakh more — is paid by the super top-up. Effectively you are covered for around 50 lakh, but the premium is far lower than buying a single 50 lakh policy outright.

The reason it is so affordable is that the super top-up rarely gets used; small claims are absorbed by your base plan, and the big, expensive year is the one it is built for. The word "super" matters here: a super top-up counts the total of all your bills in the year against the deductible, whereas a plain top-up looks at each claim separately. For most families, the super version is the one worth choosing.

A common, sensible structure looks like this:

• A base policy of 5 to 10 lakh for the everyday claims.
• A super top-up of 25 to 90 lakh sitting on top for the rare, large bill.

This combination is often how people reach figures like 50 lakh or 1 crore of total protection without paying a premium that feels punishing.

Family size and age considerations

A family floater is a single policy that all members share, drawing from one common sum insured. It is usually cheaper than separate individual policies, but the shared pool is exactly why you should size it carefully.

A few honest considerations:

• More members, more cover. A floater for a couple plus two children needs a larger pool than a cover for one person, because more than one member could be hospitalised in the same year.
• Ageing parents need their own thinking. Premiums rise sharply with age, and many families put elderly parents on a separate policy or a dedicated senior plan rather than the same floater as young children. This keeps the family premium reasonable and ensures parents are not competing with the kids for the same pool.
• Pre-existing conditions and waiting periods. Conditions like diabetes or hypertension usually carry a waiting period of two to four years before related claims are paid. Buy earlier rather than later so these clocks finish well before you are likely to need a claim.

On the tax side, premiums you pay qualify for deduction under Section 80D of the Income Tax Act — a separate, additional benefit from the Section 80C limit most people associate with investments. Paying the premium for senior-citizen parents attracts a higher 80D limit, which makes covering them properly a little easier on the pocket.

A simple formula to estimate your ideal cover

You do not need a spreadsheet. A rough, dependable rule of thumb works for most households:

Ideal cover = (cost of a major treatment in your city) + (a buffer for medical inflation and a second illness in the same year).

In everyday terms:

1. Start with the cost of one serious hospitalisation in the city where you would actually get treated.
2. For a metro family, that is comfortably in the 10 to 15 lakh range as a base.
3. Add a super top-up to lift your total protection to 50 lakh or 1 crore for the rare catastrophic event.
4. Add roughly 1 to 2 lakh of base cover for each additional family member sharing the floater.

So a young metro couple with one child might land on something like a 10 lakh base floater plus a 40 lakh super top-up. A smaller-town couple with no immediate big-city plans might be content with a 7 lakh base plus a 25 lakh super top-up. These are starting points to refine, not fixed prescriptions.

Common mistakes to avoid

A few traps come up again and again, and all of them are avoidable:

• Buying purely on the lowest premium. The cheapest plan often hides room-rent caps, disease-wise sub-limits and high co-payment clauses that quietly shrink what you actually receive at claim time. Read what is capped before you celebrate the price.
• Relying only on employer group cover. It is a genuine benefit, but it usually ends the day you leave or change jobs, and the cover may be modest. Hold a personal policy alongside it.
• Picking a sum insured and never revisiting it. Treatment costs rise; a number that was right five years ago may be too small now. Review your cover at every renewal and after major life events like marriage or a new child.
• Ignoring the cashless network. A large sum insured is little comfort if no nearby hospital is empanelled for cashless treatment.
• Skipping the fine print on waiting periods and exclusions. Knowing these upfront prevents an unpleasant surprise when you finally need to claim.

Key takeaways

• A 5 lakh cover is increasingly thin in metros; aim for 10 to 15 lakh base in Tier 1 cities and 5 to 10 lakh in smaller towns.
• Medical inflation means today's adequate cover will feel small in a decade — favour plans with a strong no-claim bonus.
• A base policy plus a super top-up is the most affordable way to reach 50 lakh or 1 crore of total protection.
• Size a family floater for the number, ages and health of everyone on it; consider a separate plan for elderly parents.
• Avoid choosing on premium alone, and check room-rent caps, sub-limits, co-payment and the cashless network before you buy.
• Premiums qualify for deduction under Section 80D, with a higher limit when you cover senior-citizen parents.

If you would like a second pair of eyes, Assurmate advisors can help you compare sum insured options across insurers and stay by your side through the claim — so the number you choose is one you understand and trust.