What is pre-EMI and how is it different from full EMI?

Pre-EMI is an interest-only payment you make on the disbursed loan amount while your property is under construction. You pay NO principal during this phase. Full EMI includes both principal and interest from day 1. Pre-EMI keeps your monthly outflow low during construction but results in higher total interest because principal reduction doesn't start until possession. Full EMI costs more monthly but saves significantly on total interest over the loan life.

Can I claim tax deduction on pre-EMI interest under Section 24(b)?

You cannot claim pre-EMI interest deduction during the construction period. However, the total interest paid from loan disbursement to March 31 of the year preceding possession is called pre-construction interest. This entire amount is deductible in 5 equal annual instalments starting from the financial year of possession under Section 24(b). For self-occupied property, the combined deduction (1/5th pre-construction + current year interest) is capped at Rs 2 lakh per year. For let-out property, there is no cap.

How is GST charged on under-construction property in India?

Under-construction properties attract GST at 5% (non-affordable housing) or 1% (affordable housing) without input tax credit. Affordable housing is defined as property costing Rs 45 lakh or less with carpet area up to 60 sqm in metros or 90 sqm in non-metros. GST is applied on 67% of the agreement value (33% is deemed as land value, which is exempt). Ready-to-move properties with Occupancy Certificate are exempt from GST.

Should I choose pre-EMI or full EMI for an under-construction property?

Full EMI saves more money in the long run because you start repaying principal from day 1, reducing total interest over the loan life. However, pre-EMI is better if your cash flow is tight during construction — monthly payments are significantly lower. Use the Pre-EMI vs Full EMI tab to compare exact numbers. If construction is expected to take 2-3 years, full EMI can save several lakhs in interest. Some banks may not offer full EMI option for under-construction properties — check with your lender.

What happens if the builder delays possession beyond the expected date?

If the builder delays possession, your pre-EMI phase extends. This means you continue paying interest without any principal repayment for a longer period, significantly increasing your total interest cost. Under RERA, the builder must pay interest to the buyer for delayed possession. The pre-construction interest (for Section 24(b) deduction) also increases, but the 5-year instalment rule still applies. Always check the RERA registration and completion timeline of your project before booking.

Under-Construction EMI Calculator India — FY 2025-26

Calculate your pre-EMI payments during construction, compare pre-EMI vs full EMI total cost, and see how much pre-construction interest you can claim under Section 24(b). Includes GST impact for under-construction and affordable housing. Updated for FY 2025-26.

Calculate your pre-EMI payments during under-construction phase

Sanctioned loan amount

₹

Total home loan sanctioned by bank

Current disbursement

% of loan disbursed so far to builder

Annual interest rate

Home loan interest rate

Months to possession

Expected months until possession/OC

Loan tenure (years)

yrs

Loan tenure after possession (for full EMI)

—

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How to Use This Calculator

Pre-EMI Calculator tab

Enter your sanctioned loan amount, current disbursement percentage, interest rate, and expected months to possession. The calculator shows your current monthly pre-EMI payment (interest only on disbursed amount), what your full EMI will be after possession, and the total pre-EMI you will pay during the construction period. Use this to budget for the construction phase.

Pre-EMI vs Full EMI tab

Compare the total cost of both options over the entire loan life. See how much interest you save by choosing full EMI from day 1 vs the standard pre-EMI during construction. The calculator shows principal repaid during construction under full EMI and the total interest saved. This helps you decide whether the higher monthly payment during construction is worth it.

Pre-Construction Interest tab

After possession, enter the total pre-construction interest (all interest paid before possession) to see how much you can claim under Section 24(b) each year. The calculator computes the 1/5th annual instalment, checks whether the combined claim exceeds the &rupee;2L cap for self-occupied property, and shows your tax saving at your slab rate.

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The Formula

Pre-EMI (monthly):
Pre-EMI = Disbursed Amount × Annual Rate ÷ 12

Full EMI (Reducing Balance):
EMI = P × r × (1+r)ⁿ / ((1+r)ⁿ − 1)
Where P = loan amount, r = monthly rate, n = tenure in months

Total Pre-EMI during construction:
Σ (Disbursed Amount in month m × monthly rate) for each month of construction
Calculator approximates with average disbursement over the period.

Pre-Construction Interest Deduction (Section 24(b)):
Annual Instalment = Total Pre-Construction Interest ÷ 5
Current Year 24(b) Claim = Annual Instalment + Current Year Interest
Cap: &rupee;2,00,000/year for self-occupied; No cap for let-out

Tax Saving:
Tax Saving = Eligible 24(b) Claim × (Slab Rate × 1.04)
(1.04 = 4% Health & Education Cess)

Worked Example

Priya — buying a 2BHK under-construction flat in Bangalore

Priya (32) books an under-construction apartment for &rupee;1 Cr. She takes a home loan of &rupee;75L at 8.5% p.a. The builder follows a construction-linked payment plan. Currently, 40% (&rupee;30L) has been disbursed. Possession is expected in 24 months. Loan tenure is 20 years post-possession.

Step 1: Pre-EMI during construction

Disbursed amount&rupee;30,00,000 (40% of &rupee;75L)

Monthly pre-EMI&rupee;30,00,000 × 8.5% ÷ 12 = &rupee;21,250

Avg disbursement over 24 months70% (avg of 40% to 100%) = &rupee;52.5L

Total pre-EMI paid&rupee;52.5L × 8.5% ÷ 12 × 24 = &rupee;8,92,500

Step 2: Full EMI after possession

Loan amount at possession&rupee;75,00,000 (no principal repaid)

Full EMI (20 years at 8.5%)&rupee;65,094/month

Step 3: Pre-construction interest deduction

Total pre-construction interest&rupee;8,92,500

Annual instalment (1/5th)&rupee;8,92,500 ÷ 5 = &rupee;1,78,500/year

Current year interest (post-possession)&rupee;6,30,000 (approx first year)

Total 24(b) claim (self-occupied)Capped at &rupee;2,00,000

Tax saving (30% slab + cess)&rupee;2,00,000 × 31.2% = &rupee;62,400/year

Key takeaway: Priya pays &rupee;8.9L in pure interest during the 2-year construction period with no principal repaid. If she had chosen full EMI, she would have paid &rupee;65,094/month from day 1 but would have repaid approximately &rupee;5.4L of principal during construction, saving approximately &rupee;4.2L in total interest over the loan life.

Under-Construction Property: Key Facts (FY 2025-26)

Construction-linked payment schedule (typical)

Milestone	Typical %	Description
Booking/Agreement	10%	Token + agreement amount
Foundation/Plinth	15%	After foundation work begins
Slab casting (each floor)	15-20%	Multiple tranches as each slab is cast
Brickwork/Plastering	15%	Internal and external plastering
Flooring/Finishing	10%	Flooring, painting, fittings
Possession/OC	5-10%	On receiving Occupancy Certificate

Exact percentages vary by builder and project. RERA-registered projects must follow the schedule filed with the authority.

GST on under-construction property

Category	GST Rate	Conditions
Affordable housing	1%	≤&rupee;45L AND ≤60 sqm (metro) / ≤90 sqm (non-metro)
Non-affordable under-construction	5%	All other under-construction properties
Ready-to-move (with OC)	0%	Exempt from GST

GST is applied on 67% of agreement value (33% deemed as land). No ITC available under 1% and 5% rates. Metros: Delhi NCR, Mumbai MMR, Kolkata, Chennai, Hyderabad, Bangalore, Pune.

Section 24(b) pre-construction interest rules

Pre-construction period: From date of loan disbursement to 31 March of the year preceding possession/completion.
Deduction: Total pre-construction interest deductible in 5 equal annual instalments starting from year of possession.
Self-occupied cap: Total Section 24(b) = 1/5th pre-construction + current year interest, capped at &rupee;2,00,000/year.
Let-out: No cap on Section 24(b). Full interest deductible. Loss set-off against other income capped at &rupee;2L/year.
Tax regime: Available only under old regime for self-occupied. Not available under new regime (115BAC) for self-occupied property.
Construction must complete within 5 years from the end of the FY in which loan was taken (for claiming &rupee;2L cap; otherwise capped at &rupee;30,000).

FAQ

What is the difference between pre-EMI and pre-construction interest? ▼

Pre-EMI refers to the interest-only payments you make to the bank each month during the construction phase. You pay only the interest on the disbursed amount, with no principal repayment. Pre-construction interest is a tax concept — it is the total accumulated interest paid from loan disbursement to March 31 of the year preceding possession. This total pre-construction interest becomes deductible under Section 24(b) in 5 equal instalments after you receive possession. They are related but different: pre-EMI is your monthly cash outflow, while pre-construction interest is the cumulative amount used for tax deduction.

Can I switch from pre-EMI to full EMI during construction? ▼

Yes, many banks allow you to switch from pre-EMI to full EMI during the construction phase. This is called tranche-based EMI or full EMI option. Contact your lender to request the switch. When you switch to full EMI, you start repaying both principal and interest on the disbursed amount. This reduces your total interest cost. However, not all banks offer this flexibility — some only start full EMI after the final disbursement. Check your loan agreement for the specific terms.

What if construction takes more than 5 years? ▼

If construction is not completed within 5 years from the end of the financial year in which the loan was taken, the Section 24(b) interest deduction cap for self-occupied property drops from &rupee;2,00,000 to just &rupee;30,000 per year. This is a significant hit. For let-out property, this 5-year rule does not apply — full interest remains deductible. Additionally, under RERA, the builder is liable to pay interest to the buyer for delayed possession. If you face a delay beyond 5 years, consult a CA about the tax implications and consider your legal options under RERA.

Is home loan interest deduction available under the new tax regime? ▼

For self-occupied property, Section 24(b) interest deduction is NOT available under the new tax regime (Section 115BAC). You must file under the old regime to claim the &rupee;2L deduction on home loan interest. For let-out property, interest deduction under Section 24(b) is allowed under both old and new regimes, but only against rental income. The loss from house property that can be set off against other income is capped at &rupee;2L. If your home loan interest is significant, compare both regimes carefully before choosing.

How does the 5-instalment rule for pre-construction interest work? ▼

Here is a step-by-step example. Suppose you paid &rupee;5,00,000 in total interest before possession. In each of the 5 years starting from the year of possession, you claim &rupee;1,00,000 (1/5th) as pre-construction interest deduction under Section 24(b). This &rupee;1,00,000 is added to your current year's home loan interest for the total 24(b) claim. For self-occupied property, the total (1/5th + current year interest) is capped at &rupee;2,00,000. If the 1/5th alone is &rupee;1L and current year interest is &rupee;6L, you can claim only &rupee;2L. The excess &rupee;5L is lost for that year and CANNOT be carried forward.

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