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Calculate how much each co-owner can claim for home loan interest and principal deductions under Section 24(b), Section 80C and Section 26 with this free joint home loan tax split calculator.
If you and a family member jointly own a house and jointly took the home loan, you don't automatically get to claim tax deductions in whatever split feels convenient. The co-owner home loan tax split calculator works out exactly how much interest and principal each co-owner can legally claim, based on ownership share, actual loan repayment, and co-borrower status.
A co-owner home loan tax split calculator tells each joint owner of a house how much of the home loan interest (Section 24b) and principal (Section 80C) they can individually claim in their income tax return. It's built for salaried employees, freelancers, small business owners, and NRIs who co-own residential property with a spouse, parent, or sibling and share a single home loan. Instead of guessing a 50-50 split, the tool applies the actual rules the Income Tax Department uses to divide the deduction.
Under Section 26 of the Income-tax Act, 1961, when a house property is owned by two or more people with "definite and ascertainable" shares, each co-owner is assessed individually on their share of the property's income — not as a single combined entity. This is the legal basis for splitting the deduction in the first place.
The actual deduction amounts flow from two other sections:
Co-owner's Interest Claim (Section 24b)
= MIN(₹2,00,000, Total Annual Interest × Co-owner's Repayment Share%)
[self-occupied property; uncapped for let-out property]
Co-owner's Principal Claim (Section 80C)
= MIN(₹1,50,000, Total Annual Principal Repaid × Co-owner's Repayment Share%)Section 24(b) caps the interest deduction at ₹2,00,000 per co-owner per year for a self-occupied property (old tax regime only), with no cap for a let-out property, subject to the ₹2 lakh house-property loss set-off ceiling. Section 80C caps the principal repayment deduction at ₹1,50,000 per co-owner per year, shared with other 80C investments like PPF and ELSS.
Important nuance most calculators get wrong: the split follows each co-owner's actual repayment contribution, not blindly their ownership percentage. If ownership is 50-50 but one co-owner pays 80% of the EMI, that person can claim up to 80% of the deduction — and the other co-owner's claim is limited to their real 20% contribution, regardless of the ownership split on paper. And critically, a co-owner who is not also a co-borrower on the loan gets zero deduction, however large their ownership share.
Rekha and her husband Vivek jointly own a flat in Pune, 50-50 on the title, and are both co-borrowers on a joint home loan.
Step 1 — Split the interest: Rekha's share = ₹4,20,000 × 50% = ₹2,10,000 Vivek's share = ₹4,20,000 × 50% = ₹2,10,000
Step 2 — Apply the ₹2 lakh self-occupied cap: Rekha's claimable interest = MIN(₹2,00,000, ₹2,10,000) = ₹2,00,000 Vivek's claimable interest = MIN(₹2,00,000, ₹2,10,000) = ₹2,00,000
Step 3 — Split the principal: Rekha's share = ₹1,80,000 × 50% = ₹90,000 Vivek's share = ₹1,80,000 × 50% = ₹90,000
Step 4 — Apply the ₹1.5 lakh 80C cap (not hit here): Rekha's claimable principal = ₹90,000 Vivek's claimable principal = ₹90,000
Combined household deduction: ₹2,00,000 + ₹90,000 + ₹2,00,000 + ₹90,000 = ₹5,80,000 — split evenly across two tax returns instead of being capped once for a single owner.
For the return you're filing right now — FY 2025-26 income, assessed as AY 2026-27 — everything above runs entirely on the Income-tax Act, 1961. The new Income Tax Act, 2025 came into force on 1 April 2026, but per the Income Tax Department's own transition FAQ, it governs only income earned from 1 April 2026 onward (Tax Year 2026-27), not the year you're filing for today.
From Tax Year 2026-27 onward, the same rules carry over under new section numbers: co-ownership assessment moves from old Section 26 to new Section 24 (note: the new Act's own Section 26 covers an unrelated topic — business/professional income — so don't quote "Section 26" without specifying which Act once you're filing for Tax Year 2026-27 onward). The interest deduction moves from old Section 24(b) to new Section 22(2), and the principal deduction moves from old Section 80C to new Section 123. The ₹2,00,000 and ₹1,50,000 caps themselves are unchanged — only the citation changes.
Also unchanged: the interest deduction for self-occupied property is still unavailable under the new tax regime (any assessment year) — it only applies if you actively choose the old regime.
Can both co-owners claim the full ₹2 lakh home loan interest deduction separately? Yes, but only up to their own share of the interest paid, subject to the ₹2 lakh self-occupied cap each. If a co-owner's share of interest is below ₹2 lakh, they can only claim that lower actual amount, not the full cap.
Does the tax split have to match the ownership percentage on the property papers? Not necessarily. The deduction generally follows actual repayment contribution. If ownership is 50-50 but the EMI is paid 70-30, the claim typically follows the 70-30 repayment split, not the ownership split.
What happens if one co-owner is not a co-borrower on the home loan? They get zero deduction under Section 24(b) or Section 80C for that property, regardless of their ownership share. Being a co-borrower on the loan is a separate legal requirement from being a co-owner of the property.
Can a co-owner claim the deduction under the new tax regime? No. The Section 24(b) interest deduction for a self-occupied property is available only under the old tax regime. Each co-owner chooses their regime independently, and only those on the old regime can claim it.
Is the co-owner home loan tax split the same for a let-out (rented) property? No — for a let-out property there's no ₹2 lakh interest cap; the entire interest paid can be claimed, split by repayment share, subject to the overall ₹2 lakh house-property loss set-off limit against other income.
Do NRIs co-owning a home loan get the same tax split? Yes. NRIs can claim Section 24(b) and Section 80C deductions on their share the same way resident co-owners do, provided they're co-borrowers and file an Indian ITR.
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