Lower premium with higher health insurance coverage: Co-pay vs. deductible, which can save you more

With medical costs skyrocketing, many people are searching for bigger health insurance coverage at an affordable premium. One strategy to keep those premiums down is to bear part of the medical cost yourself, either through a fixed deductible, a percentage-based co-pay, or sometimes, a combination of both.

While the difference might appear minor when you’re purchasing the policy, it can have a big impact on what you end up paying out of pocket if you need to go to the hospital. So, what’s the real difference between a deductible and a co-pay? Which one could end up costing you more, and which option is the better choice?

What’s the difference between a deductible and a co-pay in health insurance?

Both are cost-sharing features, but they work differently.

At the time of buying a policy, a deductible is a fixed amount that you, the policyholder, agree to pay towards hospitalisation expenses. The insurer then pays the remaining eligible amount of the hospital bill when you make a claim.

“It is common in top-up and super top-up covers; a voluntary higher deductible may reduce the premium, while a compulsory deductible may simply be part of the product design,” says Abhishek Bansal, CEO, Insurance Business, InsuranceDekho.

Many regular health insurance plans also offer deductible options that can help you bring down your premium.

For example, if your policy has a Rs 50,000 deductible and your hospital bill is Rs 5 lakh, you pay the first Rs 50,000 and the insurer settles the remaining Rs 4,50,000, subject to the policy terms and admissibility of the claim.

A co-pay, on the other hand, is the share of an admissible claim that the policyholder has to bear, usually expressed as a percentage. Unlike a fixed deductible, the amount you pay through a co-pay increases with the size of the claim.

“If your policy has a 20% co-pay, then on that same Rs. 1 lakh bill, you pay Rs. 20,000 and the insurer pays Rs. 80,000 subject to the policy terms and admissibility of the claim,” says Sarita Joshi - Head of Health and Life Insurance, Probus.

However, if the total bill is higher, the amount which the policyholder has to pay is also higher. So, on a ₹5 lakh hospital bill, a 20% co-pay would amount to ₹1 lakh.

Therefore, while a co-pay may reduce the premium, it also means the policyholder has to bear a portion of the claim whenever the co-pay clause applies. This amount increases or decreases depending on the amount of the claim

The key difference is simple: a deductible is generally a fixed amount, while a co-pay is generally linked to the claim amount.

Can you end up paying both a deductible and co-pay on the same hospitalisation?

If a policy contains both provisions, the policyholder may have to bear both on the same hospitalisation. This can be seen in some top-up and senior citizen policies, depending on their terms.

For instance, if there is a Rs. 20,000 deductible as well as a 10% co-pay on a Rs. 1.2 lakh hospital bill, the first Rs. 20,000 would be borne by the policyholder. The co-pay would then apply to the remaining Rs. 1 lakh, which means Rs. 10,000 more would have to be paid by the policyholder. So, out of the Rs. 1.2 lakh bill, the policyholder pays Rs. 30,000 and the insurer pays Rs. 90,000, explains Joshi.

This is why you should assess the combined impact of these provisions rather than looking only at the premium.

What can cost you more: a deductible or co-pay?

The impact depends largely on the size of the claim and the terms of the policy as well as how much you save on premium paid

For smaller claims, a deductible tends to hurt more, because it's a fixed amount that doesn't scale down. If your deductible is Rs. 25,000 and your bill is Rs. 30,000, you're paying most of it yourself.

For a large claim, however, a percentage-based co-pay can result in a much higher contribution.

“For larger claims, a co-pay can end up costing more in absolute terms, because it keeps taking a percentage of the admissible claim amount no matter how big the bill gets,” says Joshi.

For example, a 20% co-pay on a Rs 10 lakh eligible claim would mean a Rs 2 lakh contribution from the policyholder. This could be substantially higher than a fixed Rs 25,000 deductible, assuming the same claim is otherwise covered.

So, instead of comparing the two features only on the basis of premium savings, you should consider how much you could realistically end up paying at the time of a claim.

What other factors should you consider when choosing between a deductible and co-pay?

The choice between a deductible and a co-pay should also depend on your health profile, financial capacity, existing health cover and willingness to bear out-of-pocket expenses.

“A voluntary deductible can work for a younger, healthy buyer with a reliable emergency fund, low expected claims and an adequate base cover, particularly when it meaningfully reduces the cost of a top-up or super top-up,” explains Bansal.

However, individuals who expect more frequent but lower medical expenses may prefer a co-pay, keeping the overall out-of-pocket expense low.

Moreover, if you expect frequent and bigger medical expenses, it would again make sense to go for a voluntary deductible, as your out-of-pocket expenses will be limited to the deductible only.

The practical takeaway is to read the policy wording carefully and run the numbers before choosing a plan. Check whether the deductible applies per claim or per policy year, what claims attract a co-pay and whether the policy combines both features.

The right choice is ultimately the one that gives you adequate coverage without creating an out-of-pocket liability you may struggle to afford when you actually need to make a claim.