Section 80C and 24(b): home loan tax benefits explained
How principal and interest deductions work under the old tax regime.
A home loan carries two separate tax deductions under the old regime — one for the principal you repay, one for the interest you pay. They have different caps, different rules, and people often only know about one of them.
The two deductions
- Section 80C — principal repayment, capped at ₹1,50,000 a year. This is the same overall 80C cap shared with PPF, ELSS, life insurance premiums and everything else you claim under it — your home loan principal doesn’t get its own separate allowance, it competes for room inside the same ₹1,50,000 ceiling.
- Section 24(b) — interest paid, capped at ₹2,00,000 a year for a self-occupied property. This one is entirely separate from 80C and is usually the larger deduction of the two, since interest dominates your EMI in the early years of any loan.
On a ₹15,00,000 salary under the old regime, claiming the standard deduction only: tax works out to ₹2,57,400. Add the full ₹1,50,000 (80C) and ₹2,00,000 (24(b)) home loan deductions on top, and tax drops to ₹1,48,200 — a saving of ₹1,09,200 a year, purely from the two deductions.
| Scenario | Tax payable |
|---|---|
| Without home loan deductions | ₹2,57,400 |
| With 80C + 24(b) fully claimed | ₹1,48,200 |
What they’re actually worth
The 80C piece is often effectively free — you were already going to repay the principal as part of your EMI regardless of the tax benefit, so claiming it doesn’t cost you anything extra, it just uses up 80C room you might otherwise fill with PPF or ELSS. The 24(b) interest deduction is the genuinely loan-specific one: interest is money that leaves your pocket permanently, and the deduction is what softens that cost.
Both deductions exist only under the old regime — the new regime allows neither. This is one of the biggest reasons a large home loan can flip the old-vs-new regime math in the old regime’s favour, as covered in old vs. new tax regime: how to actually choose.
Estimate your EMI, total interest and payout for a home loan.
The catch: old regime only
Since neither deduction survives a move to the new regime, the decision isn’t just “which regime has lower rates” the moment you have a home loan — it’s whether ₹1,09,200 (or whatever your own numbers work out to) in home-loan-driven deductions outweighs what the new regime’s lower slabs would otherwise save you. That comparison depends entirely on your own income and loan size, so it’s worth running through the actual numbers rather than assuming either regime wins by default. If you’re still deciding whether to buy at all, the Rent vs Buy Calculator factors these same deductions into that comparison too.
All figures are indicative and for educational purposes only — not financial advice.
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