GST on Under-Construction Flats in Bangalore 2026

Published On: 26 June 2026

The tax rule for GST on under-construction flats in Bangalore 2026 sets a clear 1% tax on cheap housing and a flat 5% tax on all regular apartments, premium flats, and luxury villas. These current property tax rates work under a strict "No Input Tax Credit" system, which means builders cannot get tax refunds on cement or steel, so they pass the exact tax rate directly to you on your bills.

Knowing your exact tax rate helps you plan your money safely before signing any home booking forms in busy areas like Whitefield, Electronic City, Sarjapur Road, or North Bangalore. The tax applies only until the building gets an official Occupancy Certificate (OC) from the BBMP or BMRDA. Once the builder gets this document, the Flat is legally a finished building, and your GST instantly drops to 0%.

1. Simple GST Brackets for Bangalore Homebuyers

The government sets the tax rates across Karnataka based on two simple things: the total cost of the flat and its actual size in square feet.

Type of Property	Maximum Cost	Maximum Size (Carpet Area)	2026 GST Rate	Tax Refund for Builder
Affordable Flat	Up to ₹45 Lakhs	Up to 60 sq. meters (~645 sq. ft.)	1%	No
Standard / Luxury Flat	Above ₹45 Lakhs	Any size	5%	No
Commercial Shops	No Limit	No Limit	12%	Yes
Ready-to-Move (with OC)	No Limit	No Limit	0%	No

Affordable Housing Rules

To get the lowest 1% tax rate, your new flat must fit into both the price and the size limits at the same time. The total price of the home must be under ₹45 Lakhs, and the inner carpet area must be under 645 square feet. If a flat in an area like Kengeri costs ₹44 Lakhs but measures 650 square feet, it misses the affordable bracket and jumps to the 5% tax rate.

Standard and Luxury Flats

Every Flat that costs more than ₹45 Lakhs or is bigger than 645 square feet automatically takes the standard 5% GST rate. This rate covers most new apartment projects in popular neighborhoods like Indiranagar, Jayanagar, and Hebbal, where prices usually run from ₹1.2 Crore to ₹2.5 Crore. The 5% tax applies to the whole deal value, even if the builder includes extra items like a gym, pool access, or car parking slots.

2. How the One-Third Land Deduction Works

Indian tax laws state that the government cannot charge GST on the value of raw land when you buy a home. Because an unfinished project includes both the building work and a share of the land, the tax department cuts out 33.33% (one-third) of the total cost as land value before fixing the tax.

The 1% and 5% rates you see on your cost sheets already include this big land discount. The real math applies a 7.5% tax rate on just the remaining two-thirds of the building cost, which works out to a clean 5% flat charge on your total bill.

Here is a simple example for a standard 3 BHK flat in North Bangalore:

Total Flat Cost: ₹1,50,00,000
Land Value Discount (1/3rd off): ₹50,00,000
Taxable Building Work (2/3rd left): ₹1,00,000,000
GST Bill (5% of total cost): ₹7,50,000
Total Price with Tax: ₹1,57,50,000

3. Total Cost Guide for Buying a Flat in Bangalore

The full amount you pay for an under-construction flat includes the builder's price, the GST, and several local state taxes.

Karnataka Stamp Duty and Registration Fees

While GST is a central tax, the Karnataka state government charges its own fees when you sign the official property papers. For any home costing over ₹45 Lakhs, you must pay a 5% Stamp Duty and a 1% Registration Fee. The state also adds small local funds for city health and roads totaling 0.6%, making the total state fee 6.6% of the final value.

Extra and Hidden Builder Costs

Builders list extra services as separate items on your payment sheet as the building grows. Items like covered car parking (usually ₹5 Lakh to ₹8 Lakh), BESCOM electricity meters, BWSSB water connections, and building maintenance funds carry their own costs. If these items come bundled in your main home contract, they take the same 5% GST; if billed later as separate services, they can carry an 18% tax rate.

4. Easy Steps for Bangalore Homebuyers

When buying an unfinished flat, follow these quick steps to keep your money safe and avoid paying the wrong tax fees.

1. Check the RERA Number: Step 1.

Visit the official Karnataka RERA website to check the project's license number and see if the builder's final timeline looks real.

2. Look at the Cost Sheet: Step 2.

Ask the builder for a full bill breakdown to make sure the 5% GST applies only to the basic flat cost and skips hidden items.

3. Watch for the OC Paper: Step 3.

Keep an eye on the building progress; if the tower gets its official BBMP Occupancy Certificate before your last bill, that last payment has 0% GST.

4. Pay the 1% TDS Tax: Step 4.

Remember to take out 1% TDS from your payment and give it to the tax office yourself if the total flat price is ₹50 Lakhs or more.

Prestige Group Prelaunch Project is Prestige Falcon City Luxe.

FAQs

1. Do I pay GST on a resale flat in Bangalore?

No, you do not pay any GST on an old resale flat if the first owner has already registered it or if the building has an Occupancy Certificate. These homes count as completed properties, so you only pay the standard state stamp duty and registration fees.

2. What happens to my GST if the project is late?

If the project runs late, you still have to pay the regular 1% or 5% GST on all your monthly or step-by-step bills while the project is being built. The GST bills only stop when the builder finishes the structure and gets the official Occupancy Certificate from the BBMP.

3. Can a builder demand 12% GST on a flat in 2026?

A builder can only ask for 12% GST if the project started before April 2019 and the builder chose to keep the old tax system with active tax credits. For all newer projects opened in 2026, the maximum tax rate is strictly capped at 5%.

4. Are car parking and clubhouse fees taxed at a different rate?

If your car parking slot and clubhouse access come as a package with your new Flat, they are counted as a single mixed deal. This means they are taxed at the same rate as your Flat, which is 5% for regular housing.

5. How do I know if my builder is paying the GST to the government?

You can type your builder's GST number into the government tax website to check if their account is active. Also, make sure every bill they give you clearly breaks down the central CGST and state SGST amounts separately.