Calculator · TY 2026-27
Home Loan Tax Benefit Calculator: Interest, Principal and the Regime Verdict
Enter your loan and income, and see the EMI, this year's interest/principal split, what the old Section 24(b) and 80C rules actually let you claim, and what the loan saves in tax under each regime.
In loan year 1 under the old regime, this loan cuts your tax by
₹93,447
Tax with and without the loan (old regime)
| Interest the old regime allows this year (capped at ₹2,00,000 self-occupied) | ₹2,00,000 |
| Principal within your 80C headroom (₹1,50,000 of the ₹1,50,000 basket left) | ₹99,511 |
| Tax without the loan | ₹3,51,000 |
| Tax with the loan | ₹2,57,553 |
| Tax saved by the loan this year | ₹93,447 |
Regime verdict, with this loan
Old regime bill ₹2,57,553 vs new regime bill ₹1,50,800: the new regime wins by ₹1,06,753 a year. Counts only the deductions entered here; 80D, NPS and the rest can move the verdict.
Amortization: first 5 years and lifetime totals
| Loan year | Interest | Principal | Balance left |
|---|---|---|---|
| Year 1Shown | ₹4,21,182 | ₹99,511 | ₹49,00,489 |
| Year 2 | ₹4,12,387 | ₹1,08,307 | ₹47,92,181 |
| Year 3 | ₹4,02,813 | ₹1,17,881 | ₹46,74,300 |
| Year 4 | ₹3,92,394 | ₹1,28,300 | ₹45,46,000 |
| Year 5 | ₹3,81,053 | ₹1,39,641 | ₹44,06,359 |
| All 20 years | ₹54,13,880 | ₹49,99,999 | ₹0 |
Interest dominates the early EMIs and fades; the tax benefit fades with it. Total interest over the loan: ₹54,13,880 on a ₹50,00,000 loan.
Assumes a fixed rate for the full tenure, EMIs from month one, a completed house and no prepayments. The pre-construction interest rule (one-fifth a year for five years) isn't modelled. See every assumption. For the regime decision beyond this loan, run the income tax calculator.
How the home-loan tax math works
The EMI and the split:the EMI follows the standard formula P × r × (1+r)ⁿ / ((1+r)ⁿ − 1), with r as the monthly rate and n the number of months. Inside each EMI, interest is charged on the balance still outstanding, and the rest retires principal; that's why year 1 is interest-heavy and the split flips over the tenure. The tax rules treat the two slices completely differently, so the calculator amortizes the loan month by month before touching tax.
Interest, self-occupied (old regime):deductible up to ₹2,00,000 a year under the old Section 24(b). Interest beyond the cap earns nothing and doesn't carry forward. Under the new regime a self-occupied house gets no interest deduction at all.
Interest, let out (both regimes): rent is first trimmed by a 30% standard deduction, then interest comes off in full, uncapped. If that produces a loss, the regimes part ways: the old regime sets off up to ₹2,00,000 against your other income and carries the rest forward 8 years (against future house-property income only); the new regime allows no set-off against other income and no carry-forward.
Principal (old regime only):the year's principal repayment qualifies under 80C, but inside the same ₹1,50,000 basket as EPF, PPF, ELSS and insurance. If those already fill the basket, the principal adds nothing; the calculator asks what you've used and only counts the headroom. Selling the house within 5 years of possession claws the 80C claims back.
Tax saved, computed honestly:the saving is your tax bill without the loan's deductions minus the bill with them, both run through the full TY 2026-27 slab engine with rebate, surcharge, marginal relief and cess. A flat “30% of the deduction” shortcut overstates the benefit for most people; the delta method catches slab boundaries, the rebate cliff and cess exactly.
Worked example: ₹50,00,000 loan at 8.5% for 20 years, self-occupied, income ₹18,00,000 (salaried), old regime, 80C already full with ₹1,50,000 of EPF and ELSS. EMI = ₹43,391. Year-1 interest is ₹4,21,182 and principal ₹99,511. The interest claim caps at ₹2,00,000; the principal finds no 80C headroom, so it counts for nothing. Tax without the loan: ₹3,04,200. With it: ₹2,41,800. The loan saves ₹62,400 this year: the capped ₹2,00,000 at the 30% slab plus cess. Enter these exact inputs above (loan year 1, 80C used ₹1,50,000) and the calculator shows the same lines.
This calculator assumes:
- A fixed interest rate for the whole tenure, EMIs starting month one, and no prepayments. Floating-rate resets change the interest split and therefore the deduction.
- The house is complete and in your possession. Pre-construction interest (deductible in five annual instalments from completion) isn't modelled, and the 24(b) cap assumes acquisition/construction finished within the statutory window.
- One property, one borrower. Joint loans multiply the caps per qualifying co-owner; run each borrower's share separately.
- Old-regime figures use the below-60 slab set, and the only deductions counted are the ones entered here (your 80C usage and the loan's own claims). Additional 80D, NPS or donations would change both bills.
- Let-out math taxes actual rent received with the 30% standard deduction and ignores municipal taxes paid, vacancy periods and unrealised rent, each of which trims the taxable rent in a full computation.
- The affordable-housing top-up deduction (old 80EEA, for loans sanctioned in its 2019-2022 window) isn't modelled.
Home loan tax FAQs
Can I claim home-loan benefits under the new regime?
For a self-occupied house, no: neither the interest deduction nor the 80C principal exists there. For a let-out house, partially: interest is still deductible against the rent, but only down to zero. A net house-property loss can't reduce your salary or other income under the new regime, and it doesn't carry forward either. That asymmetry is why heavy borrowers with modest rent often find the old regime wins for them; the calculator's verdict card runs the actual numbers both ways.
Can I claim both HRA and a home loan?
Yes, when the facts support it: you own a home (self-occupied or let out) but genuinely live in a rented one, typically in another city for work, or too far from your office to commute. Both benefits then run in parallel under the old regime. Claiming rent to a relative for a house next door to your own is the kind of pattern that invites scrutiny; keep the arrangement real and documented.
We took the loan jointly. Do we each get the ₹2 lakh cap?
If both of you are co-owners of the property and co-borrowers actually servicing the loan, yes: each claims interest up to ₹2 lakh (self-occupied) and principal within each one's own 80C basket, in proportion to the share of the EMI each pays. A joint loan on a ₹9 lakh interest year can shelter ₹4 lakh rather than ₹2 lakh. A spouse who is on the loan but not on the title gets nothing, so fix ownership before the first EMI, not after.
What about the interest I paid before getting possession?
Pre-construction interest (everything paid from loan start to the 31 March before possession) isn't lost: it's claimable in five equal annual instalments starting the year construction completes, inside the same ₹2 lakh self-occupied cap as that year's regular interest. This calculator doesn't model it, so if you have a large pre-construction pile, your early-year deductions may be even tighter against the cap than shown.
Why does the tax saving shrink over the life of the loan?
Amortization. Early EMIs are mostly interest (in the worked example, ₹4,21,182 of interest against ₹99,511 of principal in year 1), and interest is what earns the bigger deduction. Each year the interest share falls and the principal share grows, so by the closing years the loan barely moves your tax. Pick different loan years in the calculator and watch the saving fall; the amortization table shows why.
My let-out property loss is bigger than ₹2 lakh. Is the rest wasted?
Under the old regime, not wasted, just delayed: the set-off against salary and other income is capped at ₹2 lakh a year, and the unabsorbed loss carries forward up to 8 years, usable only against future house-property income. Under the new regime it is genuinely gone: no set-off beyond the rent, no carry-forward. File by the due date to preserve any carry-forward.