Home Renovation Calculator India — FY 2025-26
Estimate your home renovation cost with room-wise breakdown (kitchen, bathroom, bedroom, living room), compare financing options (home loan top-up, personal loan, credit card EMI), and calculate Section 24(b) tax benefit. Covers basic to luxury renovation with 2025-26 pricing and 15% contingency buffer.
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How to Use This Calculator
Renovation Budget tab
Enter your flat size (in sq ft), choose a renovation type (basic, moderate, full, or luxury), and select which rooms to renovate (kitchen, bathroom, bedroom, living room, or full house). The calculator shows an itemized cost estimate for each room, adds painting and electrical costs, applies a 15% contingency buffer, and shows GST impact. Use this to set realistic expectations before getting contractor quotes.
Finance Options tab
Enter your total renovation cost and loan tenure. The calculator compares four financing options side by side: home loan top-up, personal loan, credit card EMI, and self-funding from savings. For each option, you see the monthly EMI, total interest paid, and total outflow. The comparison section shows exactly how much you save by choosing a top-up over other options.
Tax Benefit tab
Toggle whether you are funding the renovation via a home loan top-up, enter the loan details and your income tax slab. The calculator shows your Section 24(b) interest deduction for renovation (capped at ₹30,000/year — NOT ₹2 lakh, which applies only to purchase/construction) and annual tax saving. This is a widely misunderstood provision.
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The Formula
Renovation costs are estimated room-wise and adjusted by renovation type. Finance comparison uses the standard EMI formula:
Room Cost = Base Cost × Renovation Type Multiplier
Subtotal = Sum of all selected rooms + Painting + Electrical
Total = Subtotal + Contingency (15%)
GST on contractor = Subtotal × 18%
EMI Calculation:
EMI = P × r × (1 + r)n / [(1 + r)n − 1]
Where:
P = Loan principal (renovation cost)
r = Monthly interest rate (annual rate / 12 / 100)
n = Tenure in months
Tax Benefit (Section 24(b) for renovation):
Deduction = Min(Annual Interest, ₹30,000)
Tax Saving = Deduction × Tax Slab Rate
Renovation cost data is based on 2025-26 pricing from HomeLane, Livspace, and DesignCafe. Finance rates are from SBI, HDFC, and ICICI Bank rate cards (March 2026). Tax rules follow Section 24(b) of the Income Tax Act, 1961 for FY 2025-26.
Example
Amit & Neha — 1,000 sq ft moderate renovation in Pune
Amit and Neha bought a 10-year-old flat in Pune and want to renovate the kitchen, 2 bathrooms, and repaint the entire flat. They are considering a home loan top-up of ₹8 lakh to finance it.
Step 1: Renovation budget (moderate)
Step 2: Finance comparison (₹8 lakh, 5 years)
Step 3: Tax benefit (30% slab)
By choosing a home loan top-up, Amit saves ₹84,000 in interest compared to a personal loan, plus gets an additional ₹45,000 in tax benefits over 5 years. Total advantage of top-up: ₹1.29 lakh.