Home Loan Tax Benefit Calculator

The answer most people are not expecting

If you are on the new regime and the property is self-occupied, your home loan saves you nothing in tax. Not a reduced amount — nothing. Section 24(b) does not apply, Section 80C does not exist under Section 115BAC, and a ₹50 lakh loan produces exactly the same tax bill as no loan at all.

This matters because the new regime has been the default since FY 2023-24. If you never actively chose the old one, you are in it, and the home loan deduction you may have been counting on is not there. Switch the regime selector above and watch the figure move from a five-digit saving to zero.

What each section actually gives you

Section 24(a) — the 30% standard deduction

On a let-out property, 30% of the net annual value comes off before anything else, under both regimes. You do not have to spend it or prove it — on ₹3,00,000 of rent, ₹90,000 is deducted flat and only ₹2,10,000 is left for the interest to be set against. This is the step most calculators skip, and skipping it overstates the interest deduction by 30% of the rent. Enter the rent you receive; this one applies it for you. A self-occupied property has a nil annual value, so there is nothing for 24(a) to work on.

Section 24(b) — interest

Under the old regime, interest on a loan for a self-occupied property is deductible up to ₹2,00,000 a year. Interest above that is simply lost — it cannot be carried forward. In the early years of a large loan, when almost every rupee of EMI is interest, most borrowers hit this ceiling easily.

For a let-out property under the old regime there is no ceiling on the interest itself. Interest is set against what is left of the rent after 24(a), and if that produces a loss, up to ₹2,00,000 of it can be set off against your other income in the same year. Anything beyond that carries forward for eight years, to be set off against future house-property income. On ₹3,00,000 of rent that means ₹2,10,000 + ₹2,00,000 = ₹4,10,000 of interest does work this year, and the rest waits.

Section 80C — principal

The principal portion of your EMI qualifies under Section 80C, but inside the shared ₹1,50,000 ceiling — the same one holding your EPF, ELSS, insurance premiums and children's tuition fees. This is why the "Other 80C Already Used" input matters: if EPF alone has consumed the limit, your home loan principal adds nothing further, no matter how much you repaid.

The new regime, in detail

Section 115BAC removes both of the above for a self-occupied property. For a let-out property it is more subtle, and worth stating precisely because it is widely got wrong:

• The 30% deduction under 24(a) survives — 115BAC does not touch it.
• Interest is deductible only up to the net annual value after 24(a), which is 70% of the rent.
• Any excess interest becomes a house-property loss that cannot be set off against salary or any other head.
• That loss cannot be carried forward either. It is gone.

So a let-out property with ₹3,00,000 of rent and ₹5,00,000 of interest gets a ₹2,10,000 interest deduction under the new regime and a ₹4,10,000 one under the old — and the ₹2,00,000 difference is not deferred, it is lost. The calculator shows this as "Interest Not Deductible". Under the old regime the further ₹90,000 shown there is only deferred: it carries forward eight years.

Which regime should you pick?

This calculator deliberately answers a narrow question — what the home loan is worth — and not the broader one of which regime suits you overall. That depends on your entire deduction profile: HRA, 80D, NPS, standard deduction, and the different slab rates themselves. The new regime's lower rates can easily outweigh the deductions you give up.

The rough rule practitioners use is that the old regime starts winning once total deductions exceed roughly ₹4 lakh, but that is a heuristic, not a calculation. Run both regimes on your full income in the income tax calculator before deciding — the home loan is one input to that decision, not the decision itself.

Getting the inputs right

• Interest and principal come from your lender's interest certificate, not from your own EMI arithmetic. The split changes every month.
• Rent is the annual rent you actually receive. The calculator takes the 30% Section 24(a) deduction off itself, so do not net it down first or the 30% comes off twice. If you paid municipal taxes on the property, subtract those before entering — they come off ahead of the 30%.
• Under-construction property. Interest paid before possession is not deductible in those years. It is aggregated and claimed in five equal instalments starting from the year of possession — this calculator models the ordinary post-possession case only.
• Joint loans. Co-borrowers who are also co-owners can each claim up to their own limits on their share. Run the calculator once per person with each person's share of interest and principal.