A Bengaluru buyer booked an under construction flat in Whitefield and began paying interest to the bank while the tower was still rising. Come tax time, he tried to claim that interest the way a friend with a ready home did, and found he could not. The interest he had paid before getting possession was real money, but the law would not let him deduct it that year. He was not being denied the benefit, only made to wait for it. Understanding how interest paid before possession is treated saves under construction buyers from both disappointment now and a missed claim later.

The short answer. Interest you pay on a home loan before you get possession, called pre construction interest, cannot be claimed in the years you pay it. Instead it is added up and, from the year you get possession, deducted in five equal yearly installments under Section 24, alongside the interest of that year, subject to the overall cap of 2 lakh rupees a year for a self occupied home under the old tax regime. The trade off is timing. You do not lose the deduction, but you claim it later and spread over five years, so plan your tax expectations around that.

This treatment sits in the income tax law, as guides such as ClearTax explain. Here is how a Bengaluru buyer of an under construction home should read it.

What is pre construction interest?

Pre construction interest is the total interest you pay on your home loan before you take possession of the property. When you buy an under construction flat, the bank often disburses the loan in stages as construction progresses, and you start paying interest on the amounts disbursed well before the home is ready. All the interest paid from the loan date up to the end of the year before possession is the pre construction interest. It is a genuine cost of financing the home, but the law treats it differently from interest paid after you move in.

This is common in Bengaluru, where many buyers purchase early in a project to lock in a price and then pay interest for two or three years before the flat is handed over. That interest can add up to a large sum, which is exactly why its tax treatment matters.

Why can you not claim it during construction?

You cannot claim it during construction because the law does not allow a deduction for home loan interest until the property is complete. The interest incurred during the construction phase is simply not allowed as a deduction in those years. The reasoning is that the tax benefit on a house is tied to the house existing and being available to you, so until construction is finished and you have possession, the deduction is on hold. The interest is not forgiven or ignored, it is accumulated and held for later.

For a buyer, this means there is no tax relief on the interest in the early years of an under construction purchase. Budgeting on the assumption that the interest will cut your tax straight away is a common mistake, and it can leave your cash flow tighter than expected in those first years.

How does the five installment rule work?

The five installment rule lets you claim the accumulated pre construction interest in five equal parts, starting from the year construction is completed. You add up all the interest paid before possession, divide it by five, and claim one fifth in the year of completion and one fifth in each of the next four years. So if you paid 5 lakh rupees of interest before possession and took possession in a given year, you would claim 1 lakh rupees a year for five years from that year. The table below shows how the treatment changes once you have the home.

How does the 2 lakh cap apply?

The 2 lakh cap applies to your total interest deduction for a self occupied home in each year, combining the current year interest and one fifth of the pre construction interest. In other words, the yearly one fifth installment is not on top of the usual 2 lakh limit, it sits inside it. If your ongoing interest already fills the 2 lakh cap, the pre construction installment may not add anything extra in that year, while if your ongoing interest is smaller, the installment can use up the remaining room. This is why the benefit, though real, is often smaller in practice than buyers expect once the single cap is applied.

A short example makes it concrete. Suppose you paid 6 lakh rupees of interest before possession, so your one fifth installment is 1.2 lakh rupees a year. If in a given year your ongoing interest is already 1.5 lakh rupees, the two together come to 2.7 lakh, but you can still claim only 2 lakh for a self occupied home, so the pre construction installment effectively adds just 50,000 rupees that year. Understanding this before you file keeps your expectations realistic and stops you from counting on a benefit the cap will not allow.

Because these deductions live in the old tax regime, none of this applies if you file under the new regime for a self occupied home, where the interest deduction is not available. Our guide to home loan tax benefits and the old versus new regime explains that choice, which decides whether you can use these deductions at all.

Why does the five year completion deadline matter?

The five year completion deadline matters because missing it can shrink your self occupied interest deduction sharply. To keep the full 2 lakh rupee limit, the purchase or construction generally has to be completed within five years from the end of the financial year in which the loan was taken. If the project drags on beyond that, the deduction for a self occupied home can fall to a much lower figure of 30,000 rupees a year. For a Bengaluru buyer of an under construction flat, where delays are a real risk, this ties your tax benefit to the developer's timeline in a way worth watching.

It is one more reason to buy from a developer with a credible track record on delivery, since a long delay costs you not only rent and patience but a chunk of your tax benefit too. Our guide to under construction versus ready to move homes covers the wider trade offs of buying before completion.

How should a Bengaluru buyer plan for this?

Plan by keeping a clear record of the interest you pay each year before possession, and by expecting the benefit to arrive later and in parts. Ask your lender for a yearly interest certificate from the first disbursement, so that when possession comes you can total the pre construction interest accurately and claim your one fifth each year. For an under construction purchase such as Gurupunvani Eureka in Bengaluru, note the expected completion date and factor the five year rule and the delayed deduction into your budgeting from the start.

Most importantly, do not count on a tax cut in the early years of an under construction loan. Treat those first years as interest paid without immediate relief, and the five installments after possession as a benefit to claim carefully once the home is yours.

What should you check before you claim?

Run through these seven steps so your pre construction interest is claimed correctly and in full.

1. Collect a yearly interest certificate from your lender starting from the first disbursement.
2. Remember that interest paid before possession cannot be claimed in those years.
3. Total all the interest paid before possession to find your pre construction interest.
4. From the year of possession, claim one fifth of that total each year for five years.
5. Keep the total interest deduction within the 2 lakh cap for a self occupied home.
6. Aim for completion within five years of the loan to protect the full 2 lakh limit.
7. File under the old tax regime, since the interest deduction is not available in the new one.

Can I claim home loan interest while my flat is under construction?

No. Interest paid before you take possession cannot be claimed in the years you pay it. It is accumulated as pre construction interest and, from the year construction is completed, claimed in five equal yearly installments under Section 24. So the benefit is deferred rather than lost, and you begin claiming it only once you have possession of the home.

How is pre construction interest claimed after possession?

It is claimed in five equal installments. You total all the interest paid before possession, then deduct one fifth of it in the year of completion and one fifth in each of the next four years. This runs alongside the interest you pay after possession, and for a self occupied home the combined interest deduction is capped at 2 lakh rupees a year under the old regime.

Does the five installment interest come on top of the 2 lakh limit?

No. The one fifth installment sits inside the 2 lakh cap for a self occupied home, not on top of it. Your current year interest and the pre construction installment together must stay within 2 lakh rupees a year. If your ongoing interest already reaches the cap, the installment may not add extra benefit that year, so the practical gain is often smaller than expected.

What if my under construction flat is delayed beyond five years?

If the purchase or construction is not completed within five years from the end of the financial year in which the loan was taken, the interest deduction for a self occupied home can drop to 30,000 rupees a year instead of 2 lakh. This ties your tax benefit to the developer's timeline, which is a reason to prefer builders with a reliable delivery record.

Last updated 2026-07-20. PropNewz Team.