When a family member is diagnosed with cancer, dementia, or chronic renal failure, the treatment costs in India can run into several lakhs per year. Section 80DDB of the Income Tax Act 1961 provides a specific deduction for these medical expenses, separate from the general health insurance deduction under Section 80D. Millions of Indian families incur these expenses every year, yet a large number either miss the deduction entirely or claim it incorrectly.
This guide covers every aspect of Section 80DDB: who qualifies, which diseases are covered, how the deduction limit works, what certificate you need, and how to claim it correctly in your ITR.
Who Can Claim Section 80DDB
Section 80DDB is available to:
- Resident individuals who incur medical expenses for themselves or a dependent (spouse, children, parents, or siblings)
- Hindu Undivided Families (HUFs) for medical expenses incurred for any member of the HUF
Non-resident Indians (NRIs) cannot claim Section 80DDB.
Dependent for this purpose means a person who depends primarily on the taxpayer for their normal needs. The dependent need not be financially entirely dependent; it is a question of who bears the medical expenses.
Tax regime restriction: Section 80DDB is available only under the old tax regime. The new tax regime under Section 115BAC does not allow this deduction. If you are on the default new regime, you must opt out to the old regime to claim 80DDB. See our old vs new tax regime guide for when the switch makes financial sense.
Specified Diseases Under Rule 11DD
Only expenses for diseases listed under Rule 11DD of the Income Tax Rules qualify. The full list is as follows:
| Category | Diseases covered |
|---|---|
| Neurological diseases (disability of 40% or more certified) | Dementia, Dystonia Musculorum Deformans, Motor Neuron Disease, Ataxia, Chorea, Hemiballismus, Aphasia, Parkinson's Disease |
| Cancer | Malignant cancers |
| AIDS | Full-blown Acquired Immuno-Deficiency Syndrome |
| Kidney | Chronic renal failure |
| Haematological disorders | Haemophilia, Thalassaemia |
Plain-English summary of each category:
- Neurological diseases: Brain and nervous system conditions causing significant disability. Parkinson's and dementia are the most commonly claimed. Critically, the neurological disease must cause a disability of 40% or more in the patient to qualify under Rule 11DD.
- Malignant cancers: Any cancer diagnosis qualifies. This is the single most frequently claimed category under 80DDB.
- AIDS: Only full-blown AIDS qualifies, not merely an HIV-positive diagnosis.
- Chronic Renal Failure: Also called end-stage renal disease, typically requiring dialysis or kidney transplant.
- Haemophilia and Thalassaemia: Both are blood disorders requiring ongoing treatment (factor infusions and blood transfusions respectively).
If the disease is not in this list, Section 80DDB does not apply. Expenses for diabetes, hypertension, heart disease, tuberculosis, or arthritis are not covered under 80DDB (though some may qualify under other sections or as general medical expenses).
Deduction Limits: Patient's Age Controls the Cap
Tax Rate Chart
Section 80DDB Deduction Limits by Patient's Age
The cap is set by the patient's age, not the taxpayer's age. Applies only under the old tax regime.
Patient below 60 years
Maximum deduction regardless of taxpayer's age
Patient 60 years or above (senior citizen)
Higher limit for senior citizen patients
Source: Section 80DDB, Income Tax Act 1961 : FY 2025-26 (AY 2026-27)
The deduction cap depends entirely on the age of the patient, not the age of the taxpayer paying the bills.
Example illustrating the age rule:
Priya (age 35) pays Rs 90,000 for her father's (age 72) cancer treatment. The deduction cap is Rs 1,00,000 because her father (the patient) is a senior citizen, regardless of Priya's age. She can claim the full Rs 90,000.
Conversely, if Ravi (age 62) pays Rs 90,000 for treatment of his daughter (age 28, diagnosed with chronic renal failure), the deduction cap is Rs 40,000 because the patient (the daughter) is below 60, despite Ravi being a senior citizen himself.
This is a frequently missed point. Always look at the patient's date of birth, not your own.
The deduction is limited to actual expenses: You cannot claim more than the amount actually spent. If you spent Rs 30,000 and the cap is Rs 40,000, the deduction is Rs 30,000.
Reimbursement Adjustment: The Net Amount Rule
If you received any reimbursement for the medical expenses from either:
- A health insurance policy, or
- Your employer's medical reimbursement scheme
the deduction is reduced by the amount reimbursed.
Formula:
Section 80DDB deduction = Actual medical expenses incurred (capped at Rs 40,000 or Rs 1,00,000) minus insurance/employer reimbursement received
Example: Arjun spends Rs 80,000 on his mother's (age 65) cancer treatment. His health insurance policy reimburses Rs 30,000. His 80DDB deduction is Rs 80,000 minus Rs 30,000 = Rs 50,000 (within the Rs 1,00,000 cap for senior citizen patient).
Keep copies of insurance claim settlement letters and employer reimbursement statements as supporting documentation.
Specialist Certificate: What You Need
A specialist prescription is mandatory for claiming Section 80DDB. Form 10-I is no longer required following the Finance Act 2015 amendment. Under Rule 11DD, you need a prescription from a specialist such as a neurologist (DM in Neurology), oncologist, urologist (MCh in Urology), nephrologist (DM in Nephrology), haematologist, immunologist, or another specialist with a post-graduate degree in general or internal medicine. The specialist can be from a private or a government hospital. Where the patient is treated in a government hospital, the prescription can come from any specialist working full time in that hospital who holds a post-graduate degree in general or internal medicine.
What the prescription should show:
- Name and age of the patient
- Name of the disease with confirmation it falls under Rule 11DD
- Date of diagnosis and period of treatment
- Name, qualification, registration number, and signature of the specialist
- Name and address of the hospital, where applicable
The prescription does not need to be filed with your ITR. Keep it with your records and produce it if the tax officer asks for verification.
How to Claim Section 80DDB in Your ITR
- Opt for the old tax regime. Salaried filers can choose at ITR filing time. Business income filers must file Form 10-IEA before the due date.
- Gather documentation: Medical bills, payment receipts (preferably non-cash), insurance settlement letters if applicable, and the specialist prescription.
- Open Chapter VI-A in your ITR form (ITR 1, ITR 2, or ITR 3 depending on your income type).
- Enter the net deduction (expenses minus reimbursements) under the Section 80DDB row.
- Mention the disease and relationship to the patient in the fields provided. For ITR 1 filers, the Schedule VI-A under Part C has a specific 80DDB line.
The deduction reduces your gross total income before tax is applied. At the 30% slab plus 4% cess, a Rs 1,00,000 deduction saves Rs 31,200 in tax.
Common Mistakes to Avoid
1. Claiming for a disease not in Rule 11DD. Heart disease, diabetes, stroke, and orthopedic conditions are not covered. Verify the exact diagnosis against the Rule 11DD list before filing.
2. Using the taxpayer's age instead of the patient's age. The Rs 1,00,000 limit applies when the patient is a senior citizen, regardless of the taxpayer's age.
3. Not adjusting for reimbursements. Claiming the full expense without deducting insurance or employer reimbursements is incorrect and may lead to a notice under Section 143(1).
4. Prescription from the wrong kind of doctor. The prescription must come from a specialist with the qualifications listed in Rule 11DD. A general physician's note is not enough.
5. Missing the neurological disease disability threshold. Neurological conditions require a disability of 40% or more to qualify. A diagnosis alone is not enough; the specialist must confirm the disability percentage.
6. Claiming in the new tax regime. Section 80DDB is not available under the new tax regime. If you filed under the new regime, the deduction will be disallowed.
Frequently Asked Questions
Does my father's age or mine decide the Section 80DDB limit?
The patient's age. If the person being treated is 60 or older, the limit is Rs 1,00,000. If the patient is below 60, it is Rs 40,000, even if you, the taxpayer, are a senior citizen. The deduction is also limited to the amount you actually spent and is available only under the old tax regime.
My insurer paid part of the cancer treatment bill. How much can I claim under 80DDB?
Work out the lower of the actual amount you spent and the limit of Rs 40,000 or Rs 1,00,000, then subtract any amount received from an insurer or employer for that treatment. For example, Rs 80,000 spent on a 65-year-old mother with Rs 30,000 reimbursed gives a deduction of Rs 50,000.
Can I claim Section 80DDB for heart surgery or diabetes treatment?
No. Only diseases listed in Rule 11DD qualify: specified neurological diseases with at least 40% disability, such as dementia, Parkinson's disease and motor neuron disease, malignant cancers, full-blown AIDS, chronic renal failure, haemophilia and thalassaemia. Heart disease, diabetes, stroke without the listed neurological conditions and orthopaedic problems are not covered.
What certificate or prescription is needed to claim Section 80DDB?
You need a prescription for the treatment from a specialist in the relevant field, such as an oncologist for cancer or a nephrologist for chronic renal failure. It should show the patient's name and age, the disease and the specialist's details. Form 10-I is no longer required. The prescription need not be uploaded with the ITR but must be kept for verification.
Can I claim 80DDB for treatment of my brother?
Yes, if he is your dependent. For an individual, a dependent under Section 80DDB includes spouse, children, parents, brothers and sisters who depend mainly on you, and you must have actually paid the treatment costs. An HUF can claim for any of its members. Non-residents cannot claim this deduction.
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Sources
This guide is verified against incometax.gov.in/iec/foportal/ (Income Tax Department portal, Section 80DDB provisions and Chapter VI-A guidance), Rule 11DD of the Income Tax Rules 1962 (specified diseases and certificate requirements), and the Finance Act 2015 (abolition of Form 10-I requirement). Cross-checked against ClearTax (Section 80DDB guide), Bajaj Finserv (80DDB deduction limits), Tax2Win (Rule 11DD disease list), and BankBazaar (specialist certificate requirements for 80DDB). All deduction limits reflect the amounts applicable for FY 2025-26 (AY 2026-27) as per the Finance Act 2025; no changes to these limits were announced in Budget 2026.
