Written by Mariyam Sara
Published on July 10, 2026 | 12 min read
In health insurance, a deductible is the initial portion of the medical bill the insured must pay out of pocket. Any amount above that is covered and paid for by the insurance provider.
The co-payment clause in Health Insurance refers to a fixed percentage of the medical bill that the insured must pay, while the remaining amount is paid by the insurance provider.
Sub-limits in health insurance plans are predetermined maximum caps set by the insurance provider on certain medical treatments, surgeries, or hospital room rents, irrespective of your total sum insured.
People tend to buy health insurance policies with deductibles, co-payments, and sub-limits to significantly reduce their premium costs, keeping the policy affordable.
Health insurance is a financial risk management tool designed to protect you against high and unexpected medical expenses in exchange for regular premium payments. However, certain clauses and hidden costs in health insurance plans can reduce your overall coverage.
Let’s understand in detail what deductibles, co-payments, and sub-limits are in a health insurance plan.
Hidden costs are medical expenses that you must pay yourself despite having health insurance and paying regular premiums. These hidden costs may arise due to deductibles, co-payments, and room rent sub-limits specified in your policy.
Such hidden costs lower the insurer’s liability and makes the policyholder responsible to pay a portion or percentage of the total medical expenses incurred. Yet, some people either voluntarily opt for these or are uninformed about these clauses and terms in their health insurance policy.
Since deductibles, co-payments, and sub-limits lower the coverage, policyholders are charged lower premiums, making health insurance affordable.
A deductible is the fixed amount of money that you must pay out of your pocket for medical expenses incurred before your health insurance coverage comes into effect. If the total medical expense exceeds the deductible amount, the balance will be paid by the health insurance provider, subject to the policy’s terms and conditions.
There are two types of deductibles in health insurance:
Compulsory Deductibles
A compulsory deductible is a mandatory amount fixed by the insurance company and must be paid at the claim settlement. This deductible cannot be changed or removed and hence does not lower the premium on a health insurance policy.
Voluntary Deductibles
A voluntary deductible is an amount of the total medical expenses that policyholders can choose to pay at the time of claim settlement. The policyholder can choose the deductible amount as per their financial needs and sum insured. Health insurance policies with voluntary deductibles carry lower premiums since the policyholders agree to bear a portion of the medical expense.
Example: Mr Singh bought a health insurance policy with a deductible of ₹20,000 to reduce his premium costs. Singh injured his legs while playing football and suffered a minor fracture. He was hospitalised and received treatment, incurring a bill of ₹30,000.
Since Singh’s health insurance consists of a deductible clause, he would have to pay ₹20,000 of the total medical bill, and the insurance provider would pay the remaining ₹10,000.
In health insurance, a co-payment is a clause of health insurance policies where the policyholder agrees to pay a percentage of the total claim amount out of pocket at the time of claim settlement, while the remaining amount is paid by the insurance provider.
Co-payments are mandatory for claims raised by senior citizens above the age of 60 years and are optional for policyholders below 60 years. Opting for the co-payment clause reduces your health insurance premiums.
When policyholders raise a claim, they have to pay the co-payment percentage of the total medical expenses, while the insurance company pays the balance claim amount. Until policyholders pay the co-payment amount, the insurers are not liable to pay for the balance claim amount.
There are two types of co-payment in health insurance.
Mandatory Co-payment
Mandatory co-payment is the fixed percentage of the total claim that the policyholder must pay at the time of claim settlement. Senior citizens are mandatorily charged co-payments to make premiums more affordable for them and reduce the liability of the insurance company.
Voluntary Co-payment
This type of co-payment is voluntary and is usually opted for to save on health insurance premium cost.
Example: Mr Sharma, a 61-year-old man, bought a health insurance policy with a mandatory 20% co-payment clause for the medical expenses incurred, as he is classified as a senior citizen. He was hospitalised and incurred a hospital bill of ₹5 lakh.
Since Mr Sharma agreed to co-pay 20% of the total medical expense, he would be liable to pay ₹1 lakh, and the remaining ₹4 lakh would be paid by the insurance provider.
In a health insurance policy, a sub-limit is a limit set on certain medical expenses. A sub-limit applies to covered medical expenses under the original policy coverage. A sub-limit is a limit on specific medical expenses placed by the insurance provider to limit its liability.
Sub-limits are either a fixed amount or a percentage of the total sum insured imposed on a particular illness, treatment, or medical procedure. They are placed on hospital room rent, doctor’s consultation fee, and other charges.
There are three types of sub-limits in health insurance.
Sub-limit on Hospital Room Rent
Under a hospital room rent sub-limit, the insurance provider pays for the daily hospital room rent up to a certain limit. If you opt for a hospital room with a rent higher than the sub-limit under your health insurance, you will have to pay for the amount exceeding the sub-limit.
Sub-limit is also applicable to the type of hospital room you opt for, as hospitalisation charges, such as surgical procedures, doctor's consultation fees, operation theatre fees, are significantly influenced by the type of hospital room.
Sub-limit on Specific Treatments
Health insurance providers may impose a coverage limit on the total medical expenses for specific illnesses. The policyholder cannot raise a claim for the entire treatment costs in case of specific diseases regardless of their sum insured amount.
It is highly recommended to read the health insurance policy carefully to find out the list of diseases and treatments that come under the sub-limit clause, along with the maximum coverage available for each. This helps keep policyholders well-informed about the sub-limit under their plan and whether the plan suits their financial and health requirements.
Post Hospitalisation Sub-limit
After you are discharged from the hospital, you may incur some medical expenses such as check-ups, medications and tests categorised as post-hospitalisation care. The insurance provider may set a maximum limit on the amount you can raise a claim for these post-hospitalisation expenses.
Example: Ms Gupta bought a health insurance policy with a sub-limit of ₹10,000 on hospital room rent. She received treatment at one of the top hospitals and opted for a ‘Deluxe’ hospital room with a daily rent of ₹15,000.
Since Ms Gupta’s health insurance plan has a sub-limit on hospital room rent, the insurance provider will pay only ₹10,000 for the room rent, and the remaining ₹5,000 has to be paid by her.
The following is a comparison table between Deductible, Co-payment and Sub-limit.
| Feature | Deductible | Co-payment (Copay) | Sub-limit |
|---|---|---|---|
| What it is | The fixed amount you must pay yourself for medical expenses before your insurance provider starts paying. | A fixed fee or percentage of the total medical bill that you pay at the time of claim settlement. | A predefined limit or maximum amount the insurer will cover for specific medical treatments or illnesses. |
| Payment | Paid when you receive a medical bill. If the bill exceeds the deductible, the insurer begins paying for covered expenses. | Paid each time you receive medical treatment or file a claim. | Applies only when you claim for a treatment or expense category that has a specified coverage limit. |
| How it's calculated | A flat, predetermined annual amount. | A fixed amount or a percentage of the total medical bill. | A fixed monetary limit for a specific treatment, procedure, or benefit. |
| Purpose | To discourage small claims and help reduce overall premium costs. | To share healthcare costs between the insurer and the policyholder, discouraging unnecessary medical visits and helping lower premiums. | To limit the insurer's liability for high-cost treatments and prevent excessive charges for specific medical procedures or services. |
To identify any hidden costs, such as deductibles, co-payments and sub-limits, carefully read the health insurance policy. Thoroughly read the fine print, terms and conditions, and illnesses and services covered and excluded.
The insurance provider is liable to explicitly include all information regarding the insurance coverage in the policy. Though these features make premiums more affordable, they would also lower your coverage, so consider your financial and health requirements before buying a health insurance policy with any of these clauses.
Here are a few tips to help you reduce out-of-pocket expenses in health insurance.
Buy a health insurance policy with Out-Patient Department (OPD) coverage, under which the insurance provider pays for doctor consultations, diagnostic tests, medications, and other OPD services. This ensures that basic routine healthcare services are covered without paying out-of-pocket.
Hospitals often charge a higher fee for medical tests and diagnostic services compared to standalone diagnostic centres. You can opt for these non-hospital diagnostic centres to get diagnostic tests done at affordable prices if your health insurance plan does not cover them.
Instead of buying branded medications, opt for generic medicines and drugs with the same ingredients, dosage, and effectiveness at a lower price. If your plan does not cover medication expenses, you can buy generic medicines and reduce your medical expenses towards medication.
The best trick to lower your out-of-pocket expenses in health insurance is to take preventive measures, such as regular health check-ups, screenings, and vaccinations. These measures would help identify potential diseases at an early stage, preventing them from becoming a serious and costly illness.
Choose a health insurance provider with a large network of hospitals, as it offers cashless facilities where the insurance provider coordinates with the hospitals and directly settles the bill, eliminating the need to pay upfront.
A healthy lifestyle not only improves your body but also helps avoid frequent visits to the doctors and medical expenses. You can start working out consistently, have a healthy diet, and manage stress effectively, which could lower the chances of chronic illnesses. This could lower the need for medical treatments, leading to fewer medical claims.
Health insurance is a risk management tool designed to protect you from high and unexpected medical expenses. However, many health insurance policies consist of some hidden costs that could lower your coverage. Hidden costs in health insurance include deductibles, co-payments, and sub-limits. The cost-sharing of these features would lower your premium costs and coverage; it means you will bear more of the financial burden during a medical claim.
To find out the exact amount or percentage of deductibles, co-payments, and sub-limits, thoroughly read the policy before buying the health insurance plan. Whether you should opt for these cost-sharing features depends on your financial situation, risk appetite, and healthcare needs.
A deductible is a predetermined amount of the total medical expense that the policyholder must pay themselves before the insurance provider starts paying. If the medical bill amount exceeds the deductible, the balance amount will be paid by the insurance company.
If your health insurance policy includes an annual deductible, then you have to pay the set deductible amount every year. Some health insurance policies charge a per-claim deductible, which is paid every time you file a claim.
Co-payments are mandatory for senior citizens above the age of 60 years. For policyholders below 60 years of age, co-payment is voluntary.
Yes, you can buy a health insurance policy without a co-payment plan, but the premium on such a plan would be higher.
When you are hospitalised, you are charged a rent for the hospital room you occupy. Some health insurance plans consist of sub-limits on the hospital room rent, where if the rent exceeds the set maximum amount covered by the insurance provider, you have to bear the balance amount.
Though a higher deductible would reduce your premium costs, it would also increase your out-of-pocket expenses and the financial burden during a claim. Choose a deductible that you are financially comfortable paying.
Before buying health insurance, read the policy document carefully to find out hidden costs and whether the plan consists of deductibles, has a co-payment clause, or has a sub-limit on certain illnesses or services. This would help you be well-informed about what is covered and what is excluded in your health insurance plan, allowing you to make informed decisions.
About Author
Mariyam Sara
Sub-Editor
holds an MBA in Finance and is a true Finance Fanatic. She writes extensively on all things finance whether it’s stock trading, personal finance, or insurance, chances are she’s covered it. When she’s not writing, she’s busy pursuing NISM certifications, experimenting with new baking recipes.
Read more from MariyamUpstox is a leading Indian financial services company that offers online trading and investment services in stocks, commodities, currencies, mutual funds, and more. Founded in 2009 and headquartered in Mumbai, Upstox is backed by prominent investors including Ratan Tata, Tiger Global, and Kalaari Capital. It operates under RKSV Securities and is registered with SEBI, NSE, BSE, and other regulatory bodies, ensuring secure and compliant trading experiences.
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