Old vs new tax regime for home loan borrowers

The new tax regime is now the default. For most salaried Indians without large deductions, it is simpler and slightly cheaper. But for home loan borrowers — the people who can legitimately claim ₹2 lakhs of Section 24(b) interest, ₹1.5 lakhs of 80C principal, and possibly ₹1.5 lakhs of 80EEA — the old regime often still wins by a substantial margin.

How the regimes actually differ

The old regime offers lower tax slabs but lets you claim deductions. The new regime offers higher slabs but disallows most deductions. For someone with no investments or loans, the new regime usually wins — and that is why the government made it the default.

Home loan borrowers are different. They have a built-in deduction machine: every month their EMI generates interest and principal payments, each of which qualifies for separate tax benefits.

The specific deductions a home loan unlocks (old regime only)

• Section 24(b) — Interest paid on home loan for self-occupied property: up to ₹2,00,000/year. For let-out property, the full interest is deductible (subject to the ₹2 lakh house property loss cap that gets carried forward).
• Section 80C — Principal repayment: up to ₹1,50,000/year, but shared with PF, ELSS, life insurance, PPF, NSC, and a dozen other instruments. Most salaried Indians have other 80C usage too.
• Section 80EEA — Additional ₹1,50,000/year for first-time buyers of property with stamp duty value up to ₹45 lakh. This window is closed. It applied only to loans sanctioned between 1 April 2019 and 31 March 2022, and was not extended. No loan sanctioned after 31 March 2022 qualifies; borrowers already inside the window may keep claiming until the loan is repaid. Old regime only. Source: Income-tax Act, 1961 — s.80EEA; Income-tax Act, 2025 — s.131 (re-enacted verbatim; window remains historic) · verified July 2026

A worked example: ₹50 lakh home loan, ₹15 lakh annual income

Take a salaried borrower earning ₹15,00,000/year with a ₹50 lakh home loan at 8.5% for 20 years. Their EMI is ₹43,391/month. In year 1, interest is roughly ₹4,20,000 and principal roughly ₹1,00,000. All figures below are for FY 2026-27 (AY 2027-28) and include the 4% health & education cess. Source: Income-tax Act, 1961 — s.115BAC; Income-tax Act, 2025 — s.202; rebate s.156(2) (was s.87A) · verified July 2026

Under the new regime:

• Gross: ₹15,00,000 − standard deduction ₹75,000 = taxable ₹14,25,000
• Slab tax: ₹0 (to ₹4L) + ₹20,000 (4–8L @5%) + ₹40,000 (8–12L @10%) + ₹33,750 (12–14.25L @15%) = ₹93,750
• No 87A rebate — that stops at ₹12,00,000 of taxable income
• Tax: ₹97,500 (₹93,750 + 4% cess)

Under the old regime:

• Gross: ₹15,00,000 − standard deduction ₹50,000 = ₹14,50,000
• Section 24(b) interest (capped at ₹2L): → ₹12,50,000
• Section 80C principal (assume room exists): → taxable ₹11,50,000
• Slab tax: ₹12,500 (2.5–5L @5%) + ₹1,00,000 (5–10L @20%) + ₹45,000 (10–11.5L @30%) = ₹1,57,500
• Tax: ₹1,63,800 (₹1,57,500 + 4% cess)

The new regime wins by ₹66,300 — and that is after the borrower uses their full ₹2 lakh interest deduction and ₹1 lakh of principal. The restructured slabs simply outrun what the deductions are worth.

A bigger loan does not flip it — and that surprises people

The intuition is that a larger loan means more interest, so more deduction, so the old regime eventually wins. It doesn't work that way, because Section 24(b) is capped at ₹2,00,000.

A ₹2 crore loan buys the same ₹2 lakh deduction as a ₹50 lakh loan. Take the same borrower to ₹25,00,000/year with that ₹50L loan:

• New regime: taxable ₹24,25,000 → ₹3,19,800
• Old regime (24b ₹2L + 80C ₹1.5L): taxable ₹21,00,000 → ₹4,60,200

The new regime wins by ₹1,40,400 — the gap has widened, not closed. Push to ₹35 lakh income with a ₹1 crore loan and the new regime still wins by ₹1,40,400, because the extra ₹6.5 lakh of interest earns exactly ₹0 of extra deduction.

The rule of thumb

Forget income thresholds — the question is only how much total deduction you can actually assemble. Here is what the old regime needs in order to beat the new one, over and above the standard deduction:

A maxed-out home loan gives you ₹3.5 lakh (₹2L interest + ₹1.5L principal). That is not enough on its own at any income. You need roughly ₹4.5 lakh more, and in practice that means large HRA.

Which creates the catch: to claim big HRA you must be paying rent, and to claim Section 24(b) on a self-occupied property you must be living in the house you own. Both at once only works in a specific situation — you own in one city and genuinely rent in another for work. That is legal and common enough, but it is a narrow case, not the default.

So, honestly: for most salaried home loan borrowers on FY 2026-27 slabs, the new regime wins, and taking a bigger loan will not change that. The old regime is worth modelling if you have a large HRA claim, significant 80D/NPS, or income structured to use deductions the new regime disallows. Run both — but start from the assumption that the new regime is ahead.

Figures verified July 2026 against FY 2026-27 (AY 2027-28) slabs. New regime: nil to ₹4L, 5% to ₹8L, 10% to ₹12L, 15% to ₹16L, 20% to ₹20L, 25% to ₹24L, 30% above; s.87A rebate ₹60,000 wipes out tax up to ₹12,00,000 taxable; standard deduction ₹75,000. Old regime: nil to ₹2.5L, 5% to ₹5L, 20% to ₹10L, 30% above; standard deduction ₹50,000. Both include 4% health & education cess. Budget 2026 left slabs unchanged. Source: Income-tax Act, 1961 — s.115BAC; Income-tax Act, 2025 — s.202; rebate s.156(2) (was s.87A) · verified July 2026

What changes for under-construction property

Pre-construction interest (paid before possession) cannot be claimed in the year paid. It is accumulated and claimed in five equal installments starting from the year of possession. This is a frequently-missed deduction. If you bought an under-construction flat and have been paying interest for 3 years before possession, ⅕ of that accumulated interest is deductible for each of the next 5 years — on top of the current year's interest.

The honest takeaway

Tax regime choice is not a one-time decision; you can switch between regimes each year (subject to some restrictions for business income). Run the math each March-April using actual figures for the year. The home loan is just one input — your medical insurance, donations, NPS, and other deductions all factor in.

The mistake most people make is staying in the old regime out of habit because their parents told them deductions are good, even after the new regime would save them money. The opposite mistake — defaulting to the new regime because it is the default — costs higher-income home loan borrowers thousands per year.