Pre-construction interest
Also written Interest during construction period
Interest paid on a home loan for the period before the property was acquired or constructed, deductible from house property income in 5 equal instalments starting the year of acquisition or construction.
In plain language
A home loan often starts disbursing years before the flat is actually ready and handed over. Interest paid during that waiting period cannot be claimed the year it is paid — the workbook has a separate rule for it.
Pre-construction period interest is interest paid on capital borrowed for the period prior to the financial year in which the property was acquired or constructed. Instead of being claimed all at once, it is allowed in 5 equal instalments, starting from the year the property is actually acquired or constructed.
How it works
This sits inside the broader Section 24(b) deduction for interest on a home loan, which is capped for a self-occupied property at Rs 2,00,000 under the old tax regime — provided the construction or acquisition is completed within 5 years of taking the loan.
The workbook adds a penalty for delay: if the under-construction period exceeds 5 financial years, the interest deduction on a self-occupied property is capped at just Rs 30,000 a year, even after construction is finished — down from the usual Rs 2,00,000 ceiling. Pre-construction interest is spread over 5 instalments regardless, but the overall annual ceiling it falls inside can shrink sharply if the project overruns.
A worked example
Illustrative figures. Ms Fernandes takes a home loan on 1 April 2020 for a flat under construction. She pays interest of Rs 2,50,000 in total over the pre-construction period, and construction completes on 1 April 2023 — within the 5-year window.
Pre-construction interest, spread over 5 equal instalments
= Rs 2,50,000 / 5 = Rs 50,000 a year, from FY 2023-24 to FY 2027-28
From FY 2023-24, she also starts paying Rs 1,80,000 a year of regular interest on the completed home. Her total interest claim for that year is Rs 1,80,000 (regular) + Rs 50,000 (one pre-construction instalment) = Rs 2,30,000, but since construction finished within 5 years, her deduction is capped at the ordinary Rs 2,00,000 ceiling for a self-occupied property.
Why NISM asks about it
Chapter 7 (Concepts of Taxation), section on "Income from House Property," sets out the 5-instalment pre-construction interest rule alongside the Rs 2,00,000 self-occupied ceiling and the Rs 30,000 penalty ceiling for construction delays beyond 5 years. Expect a computation question spreading a pre-construction interest figure over 5 years and applying it against the correct annual cap.
Common exam traps
- Pre-construction interest is spread over exactly 5 equal instalments, not deducted in the year paid and not spread over the loan's full tenure.
- The 5-instalment spread starts from the year of acquisition or construction, not from the year the interest was actually paid.
- A construction period exceeding 5 years drops the self-occupied interest ceiling from Rs 2,00,000 to just Rs 30,000 — a completely different cap, not a proportionate reduction.
- This deduction is an old-tax-regime feature. Interest on a self-occupied property is not available as a deduction under the new tax regime at all.
Where this is taught
Free preparation for NISM Series X-BRelated terms
- Five heads of incomeEvery rupee of taxable income in India falls under one of five heads — salary, house property, business or profession, capital gains, or other sources — and total income is their sum.
- Housing loanA loan for construction, renovation, extension or purchase of property, whose principal qualifies for a Section 80C deduction and whose interest qualifies for a Section 24 deduction on loans taken after 1 April 1999.
- Home equity loanA loan against property, or LAP, where the borrower pledges their own home as collateral to raise funds for any purpose, capped by the property's value and the lender's advance rate.
- Section 24The Income Tax Act deduction for interest paid on a housing loan taken to buy, build or repair a property, for loans taken after 1 April 1999.
- Self-occupied propertyA house property whose annual value is taken as nil for tax purposes — and, since the Finance Act 2025, any of an owner's houses that is actually occupied, or simply not let out, up to a limit of two.
- Interest on borrowings to purchase securitiesInterest paid on money borrowed to acquire securities, allowed as a permissible deduction from gross interest on securities when computing income from other sources.
- Land appurtenant theretoLand attached to and forming part of a building, whose income is taxable under income from house property only because the building is there — vacant land alone is not.