Section 80C for Home Buyers: Principal and Stamp Duty in 2026

A Bengaluru buyer filing his return in 2026 expected a tidy tax saving on the principal he had repaid on his home loan, plus the hefty stamp duty he had paid at registration. He got neither in the way he imagined. He was on the new tax regime, the default now, under which the Section 80C deduction simply does not apply, and even had he been on the old regime, his principal and stamp duty would have been fighting for the same 1.5 lakh ceiling he had already filled with provident fund and insurance. Understanding Section 80C before you buy, not at filing time, is what turns a vague hope of tax savings into a real plan.

The short answer. Under the old tax regime, Section 80C lets you claim up to 1.5 lakh rupees a year, and both your home loan principal repayment and the stamp duty and registration charges paid in the year of purchase can be claimed within that single ceiling. The catches are three: the deduction is not available under the new tax regime, which is the default in 2026; principal and stamp duty share the same 1.5 lakh limit as your other 80C investments; and if you sell the property within five years of purchase, the 80C deductions you claimed are added back to your income and taxed. Confirm your position on the Income Tax Department site and with a tax adviser before you count on the benefit.

What can I claim under Section 80C as a home buyer?

Two things related to your home, within one overall limit. Under the old regime, Section 80C allows a deduction of up to 1.5 lakh rupees a year, and a home buyer can include the principal portion of home loan repayments and the stamp duty and registration charges paid in the year of purchase. The interest on your home loan is a separate benefit under Section 24(b) and does not come out of the 80C limit, a point we cover in our guide to the Section 24(b) interest deduction. So 80C is where the principal and the one time stamp duty sit, and 24(b) is where the interest sits. Knowing which benefit each rupee falls under is the first step to planning your claim, rather than assuming every home related payment is deductible.

Do principal and stamp duty share the same limit?

Yes, and that is the crucial catch. The 1.5 lakh ceiling under Section 80C is a single, shared bucket, not a separate allowance for each item. Your home loan principal repayment, your stamp duty and registration charges, and your other 80C investments such as provident fund, life insurance premiums, tax saving deposits and equity linked savings schemes all compete for the same 1.5 lakh. For most salaried buyers, the provident fund alone already uses a large slice of that limit, so by the time principal and stamp duty are added, the bucket is full and the extra items give no further benefit. This is why the stamp duty deduction, though real, is often more modest in practice than buyers expect, because there is simply little room left under the cap. The honest way to think about it is at the margin. Ask how much unused space you have under the 1.5 lakh before the property payments, and that gap, not the full stamp duty figure, is what the deduction is actually worth to you. A buyer whose provident fund and insurance already consume the whole limit gains nothing extra from claiming stamp duty, however large the duty was, while a buyer with room to spare can genuinely use it. Selling the benefit to yourself on the headline number, rather than the marginal room, is how disappointment at filing time begins.

Is it available under the new tax regime?

No, and this is where many buyers are caught out. Under the new tax regime, which is the default in 2026, the Section 80C deduction is not available, and neither is the Section 24(b) interest deduction on a self occupied home. The new regime offers lower slab rates in exchange for giving up most such deductions, so a buyer who has opted for it, or simply not opted out of the default, cannot claim the home loan principal, the stamp duty or the interest on a self occupied property. Whether the old regime with these deductions or the new regime with lower rates leaves you better off depends on your overall numbers, so this is a calculation to do deliberately, ideally with a tax adviser, rather than a benefit to assume.

What is the 5 year rule?

If you sell within five years of purchase, the 80C benefit you took is clawed back. The law provides that if the house property is transferred within five years of purchase, the entire amount of Section 80C deduction allowed on the principal, stamp duty and registration is deemed to be your income in the year of sale, and you pay tax on it then. In other words, the deduction is not truly yours until you have held the property for five years, so a quick resale can turn a past saving into a present tax bill. Notably, the Section 24(b) interest deduction is generally not reversed in the same way, so it is specifically the 80C claims that are at risk. This rule quietly discourages very short holding periods, and for a buyer treating a home as a place to live rather than a quick flip, five years passes without a second thought. If there is any chance you will sell early, factor this reversal into your decision rather than being surprised by it later.

When can I claim the stamp duty deduction?

Only in the financial year in which you actually pay it, which is usually the year of purchase and registration. Unlike the principal repayment, which recurs each year of the loan, the stamp duty and registration deduction is a one time claim tied to the year those charges are paid. So if you registered and paid stamp duty in a given financial year, that is the year to claim it, and you cannot carry it forward to a later year. Given that stamp duty in Karnataka can be a large sum, as we set out in our guide to Karnataka stamp duty and registration charges, it is worth checking whether your 80C bucket has room in that specific year, and planning your other 80C investments around it if you are on the old regime.

How does this fit with the Section 24(b) interest benefit?

They are separate benefits that, on the old regime, can be claimed together. Section 80C covers your principal and stamp duty within 1.5 lakh, while Section 24(b) separately allows up to 2 lakh a year on the interest of a self occupied home loan, so a buyer on the old regime can potentially use both. This combination is one of the reasons some buyers still prefer the old regime despite its higher slab rates, though the maths must be run for your own income. If you are weighing a specific purchase, such as a flat in this Bengaluru project, estimate your principal, interest and stamp duty for the first few years and test both regimes before you assume a tax saving. The right regime is the one that leaves more money in your pocket overall, not the one with the most deductions on paper.

What should I check before I count on the benefit?

Work through this before you assume a tax saving on your home.

1. Confirm which tax regime you are on, since 80C applies only under the old regime.
2. Add up your existing 80C items, since principal and stamp duty share the same 1.5 lakh.
3. Claim stamp duty and registration only in the financial year you actually pay them.
4. Remember the interest benefit is separate, under Section 24(b), not within 80C.
5. Plan to hold the property at least five years to avoid the 80C clawback.
6. Run the old versus new regime comparison for your own income before deciding.
7. Consult a tax adviser to confirm your specific eligibility and numbers.

Frequently asked questions

Can I claim home loan principal and stamp duty under Section 80C? Yes, under the old tax regime. Section 80C allows up to 1.5 lakh rupees a year, and both your home loan principal repayment and the stamp duty and registration charges paid in the year of purchase can be claimed within that ceiling. They share the limit with your other 80C investments such as provident fund and insurance.

Is Section 80C available under the new tax regime? No. Under the new tax regime, which is the default in 2026, the Section 80C deduction is not available, and neither is the Section 24(b) interest deduction on a self occupied home. The new regime offers lower slab rates instead, so whether it or the old regime suits you depends on your overall numbers.

What happens if I sell the property within 5 years? If you transfer the property within five years of purchase, the Section 80C deductions you claimed on principal, stamp duty and registration are added back to your income in the year of sale and taxed. The interest deduction under Section 24(b) is generally not reversed, so it is specifically the 80C claims that are clawed back on an early sale.

When can I claim the stamp duty deduction? Only in the financial year in which you actually pay the stamp duty and registration charges, usually the year of purchase. It is a one time claim, unlike the principal repayment which recurs each year, so you cannot carry it forward. Check that your 80C limit has room in that specific year if you are on the old regime.

Last updated 2026-09-14. PropNewz Team.