Updated 17 October 2026. The guide ranking first for this search (Ambak, 2025) covers the basics but is built on the old Income Tax Act sections, does not deal with the new tax regime as the default, and does not say which states give stamp duty relief. From 1 April 2026 the Income-tax Act, 2025 has replaced the 1961 Act, and section numbers have changed. Our earlier general article is Joint Home Loans: Benefits, Tax Breaks & Pitfalls; this one is the 2026, Karnataka-specific version with a worked example.

What are the main benefits of a joint home loan?

  • Higher eligibility: the bank looks at both incomes when deciding how much to lend (Ambak).
  • Double tax deductions: two co-owners who are also co-borrowers can each claim the full per-person limits, if each opts for the old regime.
  • Shared repayment: EMIs paid from a joint account create a clear record of who paid what.
  • Simpler succession: the surviving co-owner already holds part of the home. The other share still passes by will or succession law.
  • Stamp duty: no saving in Karnataka. HomeFirst notes there is no gender-based stamp duty concession; the same slabs apply to men, women and joint owners. Some other states do offer one.

How much more can a couple borrow together?

Lenders cap your EMI at a share of take-home income. The exact cap varies by bank and income, so the 50% used here is an assumption for illustration. Loan amounts use 20 years at an assumed 7.75%, where each ₹1 lakh borrowed costs about ₹821 a month.

  • Husband alone, take-home ₹1.2 lakh a month: EMI room of ₹60,000, so a loan of about ₹73 lakh.
  • Wife's take-home of ₹80,000 added: combined ₹2 lakh, EMI room of ₹1 lakh, so a loan of about ₹1.22 crore.
  • The joint application adds about ₹49 lakh of borrowing power in this example. Existing EMIs on car or personal loans reduce it for each of you.
  • The RBI's loan-to-value cap still applies: above ₹75 lakh, the loan can be at most 75% of the property's value, so a ₹1.22 crore loan needs a home worth at least about ₹1.63 crore, or a larger down payment on a cheaper one.

Co-owner vs co-borrower: what is the difference?

A co-owner's name is on the sale deed and owns a share of the home. A co-borrower signs the loan and is liable for the full EMI. You can be one without the other, but the tax benefit needs both.

  • Co-owner and co-borrower: can claim interest and principal deductions in proportion to their share (TaxBuddy).
  • Co-borrower only: liable for the loan but, per TaxBuddy, gets no deduction for interest or principal because they are not an owner.
  • Co-owner only (for example a non-earning spouse): owns a share but cannot claim the loan deductions without repaying. Ambak notes a non-working spouse can be a co-owner, with the share funded through a documented gift.
  • Every co-borrower is responsible for the whole loan, not just their share. A weak credit score for one can affect the rate or amount.

What tax can each spouse claim in 2026?

The Income-tax Act, 2025 came into force on 1 April 2026 and introduced the 'tax year' (Deccan Herald). Tax commentary maps the old sections to new ones; confirm with your chartered accountant before filing.

  • Interest on a self-occupied home: up to ₹2 lakh a year per person, now under Section 22(1)(b) and (c), formerly Section 24(b). The limit falls to ₹30,000 if construction is not completed within five years from the end of the tax year in which you borrowed (TaxCorp).
  • Principal repayment: up to ₹1.5 lakh a year per person within the overall limit, now under Section 123, formerly 80C (TaxCorp).
  • Interest on a let-out home: no cap on interest, now under Section 21, and available under both regimes (TaxCorp).
  • New regime: the self-occupied interest and principal deductions are not available. Since the new regime is the default, each spouse must compare both before choosing (TaxBuddy).
  • Pre-construction interest: claimed in five equal instalments from the year construction is completed, within the same ₹2 lakh cap (TaxCorp; TaxBuddy).
  • Claims should match each person's ownership share and actual repayment, backed by the sale deed and bank statements (TaxBuddy). More on the basics: Home-Loan Tax Benefits: Sections 24, 80C & 80EEA

Worked example: a ₹1.5 crore flat in Bangalore

Illustrative only. A couple buys a ready ₹1.5 crore flat, owned 50:50, with a ₹1.1 crore joint loan for 20 years at an assumed 7.75%. The loan fits the RBI's 75% loan-to-value cap for loans above ₹75 lakh (Deccan Herald, 2015 circular). Both choose the old regime.

  • EMI: about ₹90,300 a month.
  • Year-one interest: about ₹8.44 lakh. Year-one principal: about ₹2.40 lakh.
  • One owner only: can claim ₹2 lakh of interest and ₹1.5 lakh of principal, ₹3.5 lakh in all.
  • Both 50:50: each has ₹4.22 lakh of interest (capped at ₹2 lakh) and ₹1.20 lakh of principal, so ₹3.2 lakh each and ₹6.4 lakh together.
  • Extra deduction from going joint: about ₹2.9 lakh in year one. At a 30% marginal rate (illustrative), that is roughly ₹87,000 less tax, before cess.
  • Note: the principal deduction shares the ₹1.5 lakh limit with other items such as provident fund, so the real gain depends on what else each of you already claims.
  • Stamp duty and registration at about 7.6% (HomeFirst; The South First): about ₹11.4 lakh, the same whether one or both of you are on the deed.

How should you split ownership shares?

  • Write the shares in the sale deed (for example 50:50 or 60:40). Do not leave them unstated.
  • Match shares to who pays: each person's share of the down payment and EMIs should broadly follow their ownership share, so deductions are defensible (TaxBuddy).
  • If one spouse funds the other's share, document it as a gift (Ambak).
  • Keep the EMI account joint, and keep the payment trail for at least as long as you claim deductions.
  • Lenders usually require every co-owner to join the loan as a co-borrower; confirm your bank's rule before you sign.

What happens on sale, divorce or death?

  • Sale: expect the buyer and their bank to require every co-owner to sign the sale deed. If either of you lives abroad, plan a registered power of attorney.
  • Early sale and tax: if a home is sold within five years of possession, principal deductions claimed earlier are added back to income in the year of sale (TaxBuddy).
  • Death of a co-owner: the deceased's share passes under their will, or under the succession law that applies if there is no will. The loan does not disappear; the surviving co-borrower remains liable, which is why term cover for each borrower matters.
  • Divorce: the outcome depends on the deed, who paid and the applicable family law. Take legal advice early (Ambak).
  • Plan ahead with a will. See Inheriting Property in India: Wills, Succession & Transfer and Gift, Will or Sale: The Cleanest Way to Pass On Property.

Joint loan checklist before you apply