Home Loan Tax Benefit:
Self-Occupied vs Let-Out — the Rules Most Calculators Get Wrong
Section 24(b) in full. Why letting out your flat changes the deduction entirely. The 80C principal trap. And the loss set-off rule that determines which regime benefits you.
Ask ten salaried Indians whether a home loan helps under the new tax regime and nine will say no. They are mostly right and completely wrong at the same time — because the correct answer depends on a question they were never asked: do you live in the property, or does a tenant? The two situations produce entirely different deductions, in different regimes, with a different loss treatment. Getting the distinction wrong costs real money.
The fundamental split: self-occupied vs let-out
Self-occupied: the ₹2 lakh cap and why it has not moved
Section 24(b) of the Income-tax Act, 2025 (renumbered from the 1961 Act) allows up to ₹2,00,000 of home loan interest to be deducted from income under the house property head for a self-occupied property. This cap has not moved since it was set in Financial Year 2014-15, despite widespread expectation of a revision. Budget 2026 left it untouched.
The practical consequence: for a ₹40 lakh loan at 8.5%, the first-year interest is roughly ₹3,37,000. Of that, ₹1,37,000 — nearly 41% — is not deductible by anyone, ever. The ₹2 lakh limit is not a deduction shortfall; it is simply the money that stays taxable regardless of what you do. The ₹2 lakh ceiling is worth ₹60,000 of tax at the 30% slab — real, but modest for what may be your largest financial commitment.
Principal repayment under 80C is also old-regime only, within the ₹1,50,000 ceiling that is shared by employee PF, PPF, ELSS, life insurance and children's tuition fees. If your PF already fills that bucket, your principal repayment adds zero deduction. The salary calculator shows the 80C composition explicitly, so you can see whether you are getting credit for principal repayment or not.
Let-out: the full calculation — and when rent can increase your tax
A let-out property is taxed under the house property head using a specific formula:
- Gross annual value (GAV) = the higher of actual rent received or fair rental value
- Net annual value (NAV) = GAV minus municipal taxes actually paid
- Standard deduction = 30% of NAV (statutory, both regimes)
- Interest deduction = full interest paid, no upper cap, both regimes
- House property income = NAV − 30% standard deduction − interest
Case 1 — when rent is less than interest (the common case)
Rent ₹25,000/month. Municipal tax ₹12,000/year. Interest ₹3,20,000/year.
NAV = (₹3,00,000 − ₹12,000) = ₹2,88,000. Standard deduction = ₹86,400. House property income = ₹2,88,000 − ₹86,400 − ₹3,20,000 = −₹1,18,400 (a loss).
- Old regime: You can set off up to ₹2,00,000 of that loss against your salary income. ₹1,18,400 is within the cap, so the full loss reduces salary. Tax saving at 30%: roughly ₹35,500.
- New regime: The loss cannot be set off against salary at all. It carries forward for eight years, usable only against future house property income. Tax saving this year: ₹0.
Case 2 — when rent is high enough to produce income (the hidden trap)
Rent ₹45,000/month. Same loan and municipal tax. NAV = (₹5,40,000 − ₹12,000) = ₹5,28,000. Standard deduction = ₹1,58,400. House property income = ₹5,28,000 − ₹1,58,400 − ₹3,20,000 = +₹49,600.
That ₹49,600 is added to your salary income and taxed in both regimes. A well-rented property can quietly increase your tax bill rather than reduce it. The salary calculator shows the house property head as a plus or minus in the walkthrough, so this direction-flip is visible rather than hidden.
The 80C principal trap — where most people go wrong
Home loan principal repayment sits inside Section 80C along with employee PF, PPF, ELSS, life insurance premiums and children's tuition fees. The ceiling is ₹1,50,000 for all of them combined. If your employee PF alone already reaches ₹1,50,000, your principal repayment adds exactly zero deduction.
For a person with a ₹24L CTC and basic at 50% (₹12L), the employee PF on the statutory ceiling is ₹21,600 a year — well within the ₹1.5L cap, leaving substantial room. But at ₹40L CTC with uncapped PF (12% of full ₹20L basic = ₹2,40,000/year), PF alone blows past the ceiling, and every rupee of principal repayment, PPF and ELSS beyond that is deductionally worthless. The salary calculator shows the 80C composition line explicitly and flags this saturation.
Section 80EEA — the affordable-housing deduction that did not survive
Section 80EEA of the Income-tax Act, 1961, provided an additional ₹1,50,000 interest deduction for first-time buyers of affordable housing (stamp duty value ≤ ₹45 lakh). This section has not been carried into the Income-tax Act, 2025. If you were planning your tax liability around 80EEA, confirm with your tax advisor whether and how the transition provisions apply to your loan, as the practical outcome for ongoing loans under the new Act is not yet fully settled.
When does a home loan tip the regime choice?
For a self-occupied property: the ₹2L interest deduction is worth ₹60,000 of tax at the 30% slab. On its own, that rarely overturns the new regime's advantage — you would need it alongside full 80C, HRA and typically 80D to reach the break-even deduction threshold for your bracket. See the regime comparison guide for the full break-even table.
For a let-out property with a loss: the old-regime advantage is the loss set-off against salary (up to ₹2L), worth up to ₹60,000 in tax. Combined with HRA (for renters in the same bracket) and full 80C, this often makes the old regime the clear choice.