Your own family and your parents get separate ceilings, and the ceiling depends on age, not on who paid. With senior-citizen parents the combined deduction reaches ₹1,00,000 — which most people never claim in full.
The most under-claimed deduction in the Act, because people assume one limit covers everyone.
Section 80D gives you one ceiling for yourself, your spouse and dependent children, and a completely separate ceiling for your parents. They do not share. With a senior-citizen parent and a non-senior self, that is ₹25,000 plus ₹50,000 — a ₹75,000 deduction. If you are also 60 or above, it reaches ₹1,00,000.
This is the most common reason the parent limit goes unclaimed. Unlike several other provisions, 80D does not require the parents to be dependent — only that you paid the premium, and not in cash. A working parent with their own income still counts.
Preventive health check-up is allowed up to ₹5,000, but within the overall ceiling rather than in addition to it. If your premium already uses the full ₹25,000, the check-up adds nothing. It is genuinely useful only where the premium leaves room — and it is the one item 80D permits in cash.
Where a parent aged 60 or above has no health insurance at all, actual medical expenditure incurred on them qualifies up to ₹50,000 — a route many families miss entirely when insuring an elderly parent has become impossible or unaffordable. It cannot be claimed for a parent who is insured (if one parent is insured and the other is not, the premium for one and the expenditure for the other both count, within the same parents ceiling), and it cannot be paid in cash. The same route is available for your own medical expenditure if you or your spouse are 60+ and uninsured.
The calculator does the arithmetic. TaxSphere — our free case-law library, 1,184 authorities and the Act in full — has the judgments, the circulars and the statutory text for the same provision.