Home Loan and Income Tax: How Interest and Principal Deductions Work in Bangalore

Buying a flat in Bangalore with a bank loan can shrink the tax bill, but only if the borrower picks the right regime and satisfies a few conditions. The guide below walks along the timeline of a loan, from the day duty is paid to the last EMI, and closes with a worked example and a record-keeping list. Section numbers follow the new Income-tax Act of 2025, effective from 1 April 2026.

First Decide the Regime

Slab rates are lower in the new regime, but deductions are very few. A flat the owner lives in earns neither an interest deduction nor a principal one there. Both reliefs are exclusive to the old regime.

The better regime depends on the full set of deductions a person has, and the loan alone is seldom decisive. At higher incomes it often falls short by itself. Repeat the comparison every year, because interest forms a smaller part of each EMI as time goes on.

The Registration Year

Duty paid to transfer the flat, with the registration fee, is deductible under section 123 (80C before). It counts towards the same Rs. 1.5 Lakh ceiling that other qualifying payments use, but only in the year the money is paid. An unused balance lapses.

Karnataka's effective duty is 5.6% once cess and surcharge are added, on homes priced over Rs. 45 Lakhs, and registration costs 2%. The duty by itself normally overshoots the ceiling, so principal may get no room in that year.

While the Building Is Still Going Up

Buying before completion usually means two or three years of interest on an empty flat. The law holds that interest back: it is added up to the 31st of March preceding completion and then allowed in five equal annual slices, the first falling in the completion year.

Rs. 6 Lakh of such interest turns into Rs. 1.2 Lakh a year over five years. For an owner-occupied flat, slice and current interest together may not pass Rs. 2 Lakh, and the Finance Act, 2026 inserted that into section 22 directly.

After Possession

Two situations differ sharply, depending on who lives in the flat.

Interest on a Flat the Owner Occupies

The cap under section 22 (24(b) earlier) is Rs. 2 Lakh per year, shared by up to two such homes. Three tests apply:

• The loan funds the buying or building of the home itself
• The home is acquired or finished within five years of the year-end of borrowing
• The lender certifies the interest for the year

Fail the second test and the cap becomes Rs. 30,000, which is also the cap for repair and renovation loans. Use the lender's certificate for the amount, as interest is counted when it accrues.

Interest on a Flat That Is Rented Out

Here the calculation begins with rent. Municipal tax is deducted first, then 30% of the balance as a standard deduction. After that the whole year's interest is subtracted with no limit.

A young loan therefore tends to produce a loss. Old-regime taxpayers may set up to Rs. 2 Lakh of it against salary or other earnings that year, and the rest is carried for eight years against house property income only.

Principal Repayment

The principal portion of the EMI is deductible under section 123, again inside the Rs. 1.5 Lakh limit. Provident fund contributions, life cover, school fees and savings funds that carry tax relief draw on the same pool, so a salaried borrower may find little room left. The rules are:

1. Lenders must be banks, housing finance companies or other notified institutions, which rules out loans from family.
2. The property must be residential, and claims begin when construction ends.
3. Borrowing to repair, renovate or extend a home is excluded from principal relief.
4. The owner has to hold on to the home until five years have passed from the end of the possession year.

An earlier sale reverses the benefit, and all principal deducted so far becomes the seller's income for the year of sale. That is the cost of exiting early.

One Year, in Numbers

Suppose Rs. 75 Lakh is borrowed at 8.5% for 20 years to buy a flat the owner occupies; the numbers are illustrative. Monthly payments are around Rs. 65,087. Over twelve payments, principal accounts for Rs. 1.49 Lakh while interest takes roughly Rs. 6.32 Lakh.

With cess added, a taxpayer at the 30% slab saves close to Rs. 1,08,900 on the Rs. 3.49 Lakh, and one at 20% close to Rs. 72,600. The Rs. 4.32 Lakh of interest above the cap earns nothing. Under the new regime the saving is zero, and the old regime pays off only if it yields lower tax overall.

When Two People Share the Loan

Each co-borrower who owns a share and contributes to the instalment files their own claim, in line with their holding and actual payments. In the old regime a couple can between them deduct as much as Rs. 4 Lakh in interest and Rs. 3 Lakh in principal.

Take the illustration again with spouses holding half each: interest of Rs. 3.16 Lakh falls on each, and each can deduct Rs. 2 Lakh. Of the Rs. 6.32 Lakh paid, Rs. 4 Lakh is therefore used. Put the ownership shares in the deed before it is registered.

Reliefs That Ended

Two older first-time buyer reliefs, 80EE and 80EEA, depended on when the loan was sanctioned. The later of them applied to loans sanctioned by 31 March 2022 for homes valued at up to Rs. 45 Lakh for stamp purposes. Any loan today is outside both, leaving only the two main deductions.

Papers to Keep

Proof may be requested by an employer or tax officer, so file these from the start:

• Yearly lender statement showing the interest and principal parts of the EMIs
• Loan agreement and sanction letter
• Sale deed as registered, plus duty and fee receipts
• Occupancy certificate or possession letter, which fixes the completion year
• A working of pre-possession interest and its five slices

To turn a price into an instalment and upfront costs, try the EMI calculator. Anyone shortlisting homes in HSR Layout or Devanahalli is better off budgeting for the full EMI, with any tax saving as extra.