GST on Real Estate 2026: Under-Construction vs Ready-to-Move Flats Explained

Property prices in India have crossed ₹1 crore in most metro cities. On top of that, buyers are paying taxes they don't fully understand  including GST on real estate. The number on your builder-buyer agreement is not the number you'll actually pay.

Here's the thing. The GST rules for property changed significantly in 2019, and most guides still present outdated or incomplete information. I've seen buyers overpay because they didn't know a ready-to-move flat attracts zero GST. I've also seen builders quote misleading all-inclusive figures that buried the GST.

This article breaks it down without jargon: what GST on real estate applies to which type of property, what rates you pay, and the one decision  under-construction vs ready-to-move  that can change your total cost by 5%.

 

What Is GST on Real Estate and Who Pays It?

GST on real estate is a tax on purchase of under-construction properties in India. It works by applying CGST and SGST on the agreement value. Most commonly paid by flat buyers at the time of payment to the builder. As of 2026, the rate is 5% for regular projects and 1% for affordable housing.

Let me be clear. GST on real estate applies only to under-construction properties. The moment a builder gets a Completion Certificate (CC) or Occupancy Certificate (OC) from the local authority, the sale shifts out of GST's reach entirely.

So who pays it? You the buy pay it at the time of each payment instalment to your builder. It isn't a one-time amount at registration. Every payment you make during construction carries a proportionate GST liability.

What Counts as Under-Construction Property?

Any residential or commercial unit where the builder has not yet received the Completion Certificate from the relevant municipal authority. This includes projects that are 95% done but not yet certified. No CC = under-construction for GST purposes.

(This catches a lot of buyers off guard they see a nearly finished building, assume it's ready, and are surprised when GST shows up on their bill.)

What Is Exempt from GST in Real Estate?

Three categories attract zero GST: ready-to-move-in flats with a Completion Certificate, resale properties (second-hand sales between individuals), and land transactions. GST is a tax on supply of services  once a property is complete and certified, no construction service is being supplied.

For sellers and developers handling multiple projects, GST registration and compliance is mandatory above certain thresholds. Getting this wrong creates serious liability.

GST Rates on Under-Construction Flats: The Full Breakdown

GST on under-construction flats is charged at 5% for regular residential projects. It works by splitting into 2.5% CGST and 2.5% SGST on the agreement value. Most commonly applied on payment installments during construction. Affordable housing projects attract a reduced 1% GST under the 2019 GST Council revision.

The 2019 GST Council revision changed the rates significantly. Before April 2019, builders could claim Input Tax Credit (ITC) and pass the benefit to buyers  but the rates were 12% (regular) and 8% (affordable). Post-April 2019, ITC was removed and rates were slashed. Whether buyers actually benefited is debatable.

Regular Residential Projects

For any non-affordable residential project, GST is 5% on the total agreement value, excluding the land component. Builders are allowed to deduct 1/3rd of the agreement value as land cost  so effectively, GST applies on 2/3rd of your flat's value. That's the rule, but not every builder explains it this way.

Affordable Housing GST: 1% Rate

Affordable housing in metropolitan cities (Delhi NCR, Mumbai, Bengaluru, Chennai, Hyderabad, Kolkata) qualifies for 1% GST if the unit value doesn't exceed ₹45 lakh and carpet area is up to 60 sq.m. In non-metro cities, the carpet area threshold is 90 sq.m. These limits were set by the CBIC under Notification No. 03/2019-CT(R).

Honestly, the affordable housing definition in GST doesn't match what most people call 'affordable housing' in metro cities. A 60 sq.m flat in Mumbai at ₹45 lakh barely exists anymore. The category is real, but its reach is limited.

Commercial Property GST

Under-construction commercial properties, shops, offices, retail units  attract 12% GST (with ITC available to business buyers). This is higher than residential and structured differently. If you're buying an under-construction office space as a registered business, you can claim ITC on this GST.

GST Rate Comparison: Under-Construction vs Ready-to-Move vs Other Categories

Under-Construction vs Ready-to-Move: Which One Costs You More?

GST on real estate makes under-construction flats more expensive by 5% compared to ready-to-move options. It works by adding GST on each payment instalment during construction. Most commonly analysed by buyers comparing total cost of ownership. A ₹1 crore under-construction flat can attract ₹3.33 lakh in additional GST.

This is the comparison every home buyer needs to make before signing anything. Under-construction flats offer lower prices (often 10–20% below market) but add 5% GST. Ready-to-move flats are more expensive upfront but attract zero GST and no project delay risk.

Mini Case Study: ₹90 Lakh Flat  Under-Construction vs Ready-to-Move

Scenario: Rahul is comparing two 2BHK flats in Pune. One is under-construction at ₹90 lakh (agreement value). The other is a ready-to-move flat at ₹98 lakh (CC obtained).

Under-Construction Cost Calculation:

•         Agreement value: ₹90,00,000

•         Land deduction (1/3rd): ₹30,00,000

•         Taxable value: ₹60,00,000

•         GST at 5%: ₹3,00,000

•         Stamp duty (~6% on full value): ₹5,40,000

•         Total outgo: ₹98,40,000

 

Ready-to-Move Cost Calculation:

•         Agreement value: ₹98,00,000

•         GST: ₹0

•         Stamp duty (~6%): ₹5,88,000

•         Total outgo: ₹1,03,88,000

 

Outcome: The under-construction flat ends up costing ₹98.4 lakh total vs ₹1.04 crore for the ready-to-move unit. The cheaper sticker price is real  but only if the project delivers on time. Delays of 2–3 years (common in India) can erode this advantage entirely.

In my experience working with home buyers comparing these options, the GST difference is rarely the deciding factor. But not knowing about it leads to budget miscalculation  and that's avoidable.

GST on Real Estate: What the Builder Must Give You

GST on real estate requires builders to issue a valid GST invoice for every payment received. It works under the mandatory invoicing rules of the GST Act. Most commonly important for buyers who want to track GST paid for financial records. Builders with annual turnover above ₹20 lakh must be GST registered.

Your builder's GSTIN should be on every invoice. If it's not, that's a problem  even if you're paying the GST amount. The GST you pay is only valid if it flows through a registered supplier. Without a proper invoice, you have no legal proof of GST paid.

What a Valid Builder GST Invoice Must Include

•         Builder's GSTIN and legal name

•         Your name and address (GSTIN if you're a business)

•         Project name, unit number, and carpet area

•         Agreement value and land deduction (1/3rd breakout)

•         Taxable value and applicable GST rate

•         CGST and SGST amount separately

•         Invoice number, date, and payment reference

 

If your builder is issuing informal demand letters instead of proper GST invoices, that's a compliance gap on their side  but the loss is yours. 

Can You Claim ITC on Under-Construction Property GST?

The short answer: No, not as an individual home buyer. Since April 2019, ITC on under-construction residential property has been blocked under Section 17(5) of the CGST Act. You pay the 5%, and there's no offset available.

Business buyers purchasing commercial property for use in their taxable business can still claim ITC. This is a meaningful distinction if you're buying office space. Speak to our GST consultants about ITC eligibility for commercial purchases. 

5. How Stamp Duty + GST Stack Up: The Real Total Cost

GST on real estate and stamp duty are two separate levies on property purchase. GST goes to the central and state government as indirect tax. Stamp duty goes to the state government on the registration value. Both apply on under-construction purchases; only stamp duty applies on ready-to-move flats.

A lot of buyers confuse stamp duty and GST  or think they're the same tax. They're not. GST is a central tax (split between Centre and State). Stamp duty is purely a state-level charge on property registration, ranging from 4% to 7% depending on the state and buyer profile.

What matters practically: for under-construction flats, you'll pay both. For ready-to-move flats, you'll pay only stamp duty. This changes your upfront cash requirement significantly.

Expert View on the Double Burden

The National Real Estate Development Council (NAREDCO) has raised concerns about this combined burden. As they noted publicly:

"The effective tax burden on homebuyers  GST plus stamp duty  remains one of the highest among Asian economies and continues to dampen demand in the affordable segment."  NAREDCO (National Real Estate Development Council), Budget Memorandum, 2024

Their point is valid. A buyer in Maharashtra on a ₹80 lakh under-construction flat pays 5% GST (~₹2.67 lakh effective) plus 6% stamp duty (₹4.8 lakh)  that's ₹7.47 lakh in taxes on top of the property price. That's not a rounding error; it's a significant cost most first-time buyers underestimate.

State-Wise Stamp Duty Quick Reference (2026)

 

Note: UC = Under-Construction. Stamp duty rates are approximate and subject to state budget changes. Always verify with your sub-registrar office before finalising. 

Frequently Asked Questions About GST on Real Estate

Q1: Is GST applicable on ready-to-move flats in 2026?

No. Ready-to-move flats where the builder has obtained a Completion Certificate (CC) or Occupancy Certificate (OC) are completely exempt from GST. You'll only pay stamp duty and registration charges. This exemption has been in place since GST's launch in 2017 and remains unchanged in 2026.

Q2: What is the GST rate on under-construction property in 2026?

The GST rate on under-construction residential property is 5% for regular projects and 1% for qualifying affordable housing units (value up to ₹45 lakh, carpet area up to 60 sq.m in metros). These rates were fixed by the GST Council in March 2019 and remain effective in 2026.

Q3: Does GST apply to property resale between two individuals?

No. If you're buying a flat directly from the previous owner (not a builder), GST doesn't apply. Resale transactions are treated as immovable property transfers, not as a supply of construction services. Only stamp duty and registration fees apply in these cases.

Q4: Can I claim GST input tax credit on my flat purchase?

Individual home buyers cannot claim ITC on GST paid for residential under-construction flats. This was explicitly blocked from April 2019 under Section 17(5) of the CGST Act. Business buyers purchasing commercial property for taxable business use may be eligible to consult a GST professional for your specific situation.

Q5: What happens if my builder doesn't have a GSTIN?

A builder above the GST threshold (₹20 lakh annual turnover, or ₹10 lakh in some states) is legally required to be GST registered. If they're collecting GST from you without a valid GSTIN, that's a serious compliance violation. Report it to the GST authority  and don't pay any 'GST' amount without a valid GSTIN invoice. 

The Number on the Brochure Is Not What You'll Pay

Three things to carry with you from this guide. One: under-construction flats attract 5% GST (or 1% for affordable housing); ready-to-move flats attract zero. Two: GST and stamp duty stack  budget for both. Three: always demand a valid GST invoice from your builder, every single instalment.

GST on real estate is one of those areas where a little clarity saves a lot of money. The rules aren't complicated once you see them laid out  but most buyers only ask about GST after they're already committed to a project.

You now know what most people find out too late. Use that.

Sort Your GST Compliance Before It Becomes a Problem

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About the Author

Kanan Gautam is a GST consultant and content strategist specialising in Indian indirect tax and real estate compliance. Over 3 months of writing for FreeGST, Kanan has published in-depth GST guides used by home buyers, developers, and CA firms across India.