A co-owner's name is on the property and a co-borrower's name is on the loan, and only someone who is both, and who pays the EMI from their own income, can claim the home loan tax benefit. Every co-borrower is liable for the whole loan, owner or not, and for a home you live in the deduction exists only in the old tax regime; a let-out home is different. On a ₹70 lakh joint loan, two claims can use ₹4 lakh of the first year's ₹5.9 lakh of interest, but at ₹28 and ₹22 lakh the new regime still costs this couple less.

What is the difference between a co-borrower and a co-owner?

A co-owner holds a share of the flat, written in the sale deed. A co-borrower signs the loan and owes all of it: the lender can collect the full EMI from any one of you, and the loan's repayment record appears on each borrower's credit report.

Most lenders ask every co-owner to join the loan, but a co-borrower need not own anything. A parent added only to lift the loan amount carries the whole debt and gets no deduction, because interest and principal relief go only to an owner who repays. Taking a name off a loan later needs the lender's written release, as joint home loan after divorce explains.

Revathi's ₹70 lakh joint home loan: ₹4 lakh of ₹5.9 lakh claimable

Revathi (₹28 lakh CTC) and her husband (₹22 lakh CTC) buy a ready ₹90,00,000 flat with ₹20,00,000 down and a ₹70,00,000 joint home loan. That is 77.8% of the price, inside RBI's 80% cap for loans above ₹30 lakh up to ₹75 lakh; stamp duty and registration come on top. At an assumed 8.5% over 20 years (in 2026 lenders charged from about 7.25% for strong credit scores to 10% or more for weaker ones), the EMI is ₹60,748.

The first 12 EMIs total ₹7,28,971: about ₹5,89,700 of interest and ₹1,39,300 of principal.

They register the flat 50:50 and each pays ₹30,374 of the EMI from their own account. In practice each claim follows the owner's share and what that owner pays. Each half of the interest is about ₹2,94,800, so each can claim the ₹2,00,000 cap for a self-occupied home under section 24(b) of the 1961 Act (section 22 of the Income-tax Act, 2025): ₹4,00,000 of the ₹5.9 lakh between them. Each half stays above the cap for the first 11 years of the loan.

With Revathi as sole owner and sole payer, only ₹2,00,000 would count. On a flat still being built, interest before completion is claimed in five equal parts from the year it is finished, inside the same cap, as pre-EMI vs full EMI works through.

Principal does less. Each ₹69,700 share counts under section 80C of the 1961 Act (section 123 of the 2025 Act), within ₹1,50,000 per person, but own PF fills that limit first. On the CTC vs in hand salary structure, Revathi's PF is about ₹1,64,100 a year, so her limit is already full; her husband's ₹1,28,900 leaves ₹21,100 of room.

Do the two claims beat the new regime at ₹28 and ₹22 lakh?

Not for this couple. Give each spouse a typical home-loan stack: ₹2,00,000 of interest, ₹1,50,000 under 80C, ₹25,000 under 80D, ₹50,000 of NPS under 80CCD(1B) and ₹2,500 of professional tax, ₹4,27,500 in all. Their gross salaries are about ₹25,70,200 and ₹20,19,400. Here is the household's tax for FY 2026-27, with cess:

Arrangement Revathi Husband Household
New regime, any names on the deed ₹3,41,700 ₹1,96,440 ₹5,38,140
Old regime, both own and pay ₹4,57,920 ₹2,86,080 ₹7,44,000
Old regime, Revathi sole owner and payer ₹4,57,920 ₹3,55,070 ₹8,12,990

Inside the old regime, his co-ownership is worth ₹68,990 a year: his ₹2,00,000 of interest and ₹21,100 of principal at 31.2%. Yet the new regime leaves the household ₹2,05,860 better off, and there the deed's names change nothing.

The old regime wins only past a break-even line: about ₹8,00,000 of deductions at Revathi's salary and ₹7,14,800 at his, so they are ₹3,72,500 and ₹2,87,300 short. Closing a gap that size usually takes a large HRA exemption for rent paid in another city; old vs new tax regime shows the line at other salaries.

Whose name should go where?

Ownership decides more than the deduction. Each owner is taxed on their share of the gain when the flat is sold, and principal claimed under 80C is added back to income if the flat is sold within five years of the end of the year of possession (section 80C(5) of the 1961 Act). Some states charge lower stamp duty when a woman is a buyer, so check your state's rate before registration.

A split that matches the money keeps the claims clean: shares in line with what each put into the down payment and pays of the EMI, from their own accounts, as in a proportional split of household money. Registered 56:44 to match their pay, both interest shares would still pass ₹2,00,000 this year. The deed is fixed at registration, while the regime is chosen again each year in the return.

Dhi looks at the joint loan alongside your cash flow, net worth, protection and goals, and nudges you when something in that picture needs attention. Dhi answers questions about a shared loan from your own numbers and earns no commissions.

Frequently asked questions

No. A co-owner who did not borrow has no interest or principal of their own to deduct, so only the owner who is also the borrower and repays claims, within their own ₹2,00,000 interest cap and ₹1,50,000 under section 80C of the 1961 Act. That claim is old regime only for a home you live in.
In the old regime each owner can treat up to two homes as self-occupied, but the ₹2,00,000 interest cap covers both together, not each. A third home is taxed as if let out, on the rent it could fetch, even if it stands empty.
Each owner is taxed on their share of the rent after municipal tax, less a 30% standard deduction and their share of the interest, with no ₹2,00,000 cap on the interest, in both regimes. If that leaves a loss, the old regime lets each owner set up to ₹2,00,000 of it against salary in a year and carry the rest forward for eight years; the new regime allows neither.

This is general information for salaried individuals in India, not personalised financial advice.