GST on Flat Purchase in India: Latest GST Rates, Calculation, Exemptions & Buyer Guide (2026)

Buying a flat in India involves more than just the agreed sale price — and GST on flat purchase is one of the costs that catches many first-time buyers off guard. Whether GST applies to your purchase, and how much, depends entirely on the construction status of the property. This guide explains the current GST rates, how to calculate them with real examples, when GST does not apply at all, and what every flat buyer should check before signing on the dotted line.

Is GST Applicable on Flat Purchase?

GST applies only to under-construction properties sold by a builder or developer. It does not apply to:

• Ready-to-move-in flats with a valid Completion Certificate (CC) or Occupancy Certificate (OC)
• Resale flats sold by individual owners
• Purchase of standalone land (without construction services bundled in)

The legal basis for this distinction comes from Schedule III of the CGST Act, 2017, which treats the sale of completed buildings (after CC/OC issuance) as a sale of immovable property — outside the scope of GST entirely. Under-construction sale, on the other hand, is treated as a “supply of construction service,” which is taxable.

This single distinction — completed vs. under-construction — determines almost everything about your GST liability when purchasing a flat.

How Much GST on Flat Purchase in 2026?

As of 2026, GST on under-construction flats follows a two-tier structure based on whether the property qualifies as “affordable housing”:

Property Type	GST Rate	Input Tax Credit (ITC)
Affordable housing (under-construction)	1%	Not available
Other residential under-construction units	5%	Not available
Commercial property (under-construction)	12%	Available
Ready-to-move-in / resale (with CC/OC)	0% (No GST)	Not applicable

These rates have been in effect since April 1, 2019, when the GST Council revised real estate taxation, and they remain unchanged under the broader GST 2.0 rate revisions effective from September 22, 2025 — the GST Council kept residential property rates at 1% and 5% even as several other goods and services categories were restructured.

What Qualifies as Affordable Housing for the 1% GST Rate?

To qualify for the concessional 1% GST rate, a residential unit must meet both conditions:

1. Carpet area limit:
   • Up to 60 square metres in metro cities (Bengaluru, Chennai, Delhi-NCR, Hyderabad, Kolkata, Mumbai Metropolitan Region)
   • Up to 90 square metres in non-metro cities
2. Price limit:
   • Total consideration (including preferential location charges, if any) does not exceed ₹45 lakh

If either condition is not met — say, the unit is within budget but exceeds the carpet area limit, or vice versa — the property is taxed at the standard 5% rate instead.

This concessional rate aligns with the government’s broader affordable housing push under schemes like the Pradhan Mantri Awas Yojana (PMAY). If you are buying your first affordable home, it is worth checking your PMAY subsidy eligibility alongside the GST benefit.

How to Calculate GST on Flat Purchase — With Examples

Example 1 — Affordable housing:

Flat price: ₹40 lakh (meets the carpet area and price criteria for affordable housing)

• GST rate: 1%
• GST amount: ₹40,00,000 × 1% = ₹40,000
• Total payable: ₹40,40,000

Example 2 — Non-affordable residential flat:

Flat price: ₹80 lakh (under-construction, exceeds affordable housing carpet area or price limit)

• GST rate: 5%
• GST amount: ₹80,00,000 × 5% = ₹4,00,000
• Total payable: ₹84,00,000

Example 3 — Ready-to-move-in flat:

Flat price: ₹80 lakh (with valid Completion Certificate)

• GST rate: 0% — No GST applicable
• Total payable: ₹80,00,000 (plus stamp duty and registration charges, which are separate from GST)

This comparison alone explains why so many buyers actively seek ready-to-move-in properties — the GST saving on an ₹80 lakh non-affordable flat can be ₹4 lakh.

Is GST Applicable on Ready-to-Move Flats?

No. Once a builder obtains a Completion Certificate (CC) or Occupancy Certificate (OC) from the local municipal or development authority, the property is classified as immovable property under Schedule III of the CGST Act — a transaction completely outside the scope of GST.

How to verify before purchase:

• Ask the builder for the CC/OC issued by the local development authority
• Verify the certificate’s authenticity through the municipal corporation or development authority website
• If a flat is marketed as “ready to move” but does not yet have a CC/OC, it may still be classified as under-construction for GST purposes — always confirm this before assuming GST exemption

Is There GST on the Sale of an Old Flat (Resale)?

No. Resale transactions — where an individual seller transfers ownership of a previously owned flat to a buyer — are exempt from GST entirely. This is because:

• The seller is an individual, not a builder or developer providing a construction service
• The sale is a transfer of an existing asset, not a supply of construction service

You will still pay stamp duty and registration charges on a resale flat (these are state levies, unrelated to GST), but GST itself does not apply.

Is GST Applicable on Purchase of a Flat from a Landowner?

This scenario arises in joint development agreements, where a landowner partners with a developer and receives a share of constructed flats in exchange for the land. If you purchase a flat directly from such a landowner (rather than from the builder), GST applicability depends on the construction status of that specific unit:

• If the unit is under-construction at the time of your purchase, GST applies at the standard rate (1% or 5%, depending on affordability classification)
• If the unit has already received a CC/OC, the same exemption that applies to builder sales also applies here

The landowner is generally still considered to be transferring a “supply” linked to the underlying development agreement, so it is advisable to get written confirmation from the seller’s chartered accountant regarding GST applicability for this specific transaction type.

Who Pays GST — Builder or Buyer?

The buyer pays the GST, while the builder collects the tax and remits it to the government as required by law.

GST works this way for most goods and services in India—the buyer pays the tax as part of the purchase price, and the seller (in this case, the builder) collects, reports, and remits it to the tax authorities.

The builder should clearly itemise the base property price and the GST amount separately in the sale agreement so that you can verify whether the correct GST rate has been applied.

Is ITC Available for GST Paid on a Flat Purchase?

For individual homebuyers purchasing a residential flat for personal use, Input Tax Credit (ITC) is not available. Under the GST regime effective since April 2019, the 1% and 5% concessional rates for residential property both come without ITC — meaning neither you nor the builder can offset this GST against other tax credits.

ITC remains available only for:

• Commercial property purchases (taxed at 12% with ITC)
• Builders constructing under the older pre-2019 tax structure for specific ongoing projects that opted to remain in that scheme (a narrow, mostly closed category by 2026)

How to Avoid GST on Flat Purchase

While GST cannot be “avoided” through any loophole, buyers can legitimately reduce or eliminate their GST liability through these choices:

1. Buy ready-to-move-in properties: Properties with a valid CC/OC carry zero GST — the single most effective way to avoid GST entirely
2. Choose resale properties: Individual-to-individual resale transactions are GST-exempt
3. Target affordable housing criteria: If buying under-construction, structuring your purchase to meet both the carpet area and price criteria reduces your GST rate from 5% to 1%
4. Avoid bundled land + construction packages where land is sold separately: Pure land purchase (without construction services) is outside GST scope — though this applies to plot purchases, not flats

GST Impact on Home Buyers — The Bigger Financial Picture

Beyond the direct GST cost, the tax has reshaped buyer behaviour and pricing in India’s residential market:

• Demand shift toward ready properties: Since GST exemption makes ready-to-move-in homes effectively cheaper on a like-for-like basis, demand for completed inventory has grown, particularly in markets with high unsold ready stock
• Affordable housing boost: The 1% concessional rate has made the affordable housing segment more attractive for both buyers and developers, aligning with the government’s broader housing-for-all objectives
• Construction cost relief for builders: The GST 2.0 revision in September 2025 reduced GST on cement from 28% to 18%, lowering input costs for builders — though this benefit flows through pricing competitiveness rather than directly reducing the GST rate buyers pay on flats

If you are financing your purchase, factor the applicable GST amount into your total budget before applying for a home loan, since most lenders calculate loan eligibility against the all-inclusive cost of the property, GST included. A home loan eligibility calculator can help you estimate this accurately.

FAQs on GST on Flat Purchase

Q: How much GST on flat purchase in 2026?
GST is 1% for affordable housing (carpet area up to 60 sqm in metros/90 sqm in non-metros and price up to ₹45 lakh) and 5% for other under-construction residential units. Ready-to-move-in and resale flats attract no GST.

Q: Is GST applicable on flat purchase?
GST applies only to under-construction flats sold by a builder. Ready-to-move-in flats with a Completion Certificate and resale flats sold by individuals are exempt from GST.

Q: Who pays GST — builder or buyer?
The buyer bears the GST cost as part of the property price, while the builder is responsible for collecting it and remitting it to the government as per GST compliance requirements.

Q: Is ITC available for GST paid on a property purchase?
No, for residential property under the 1% and 5% concessional rates, Input Tax Credit is not available to either the buyer or the builder. ITC remains available only for commercial property at the 12% rate.

Q: How to avoid GST on flat purchase?
Buy a ready-to-move-in property with a valid Completion Certificate, or purchase a resale flat from an individual seller — both are exempt from GST entirely.

Q: Is GST applicable on purchase of a flat from a landowner?
GST applicability depends on the construction stage of that specific unit at the time of purchase — under-construction units attract GST at the standard rate, while units with a CC/OC are exempt, similar to builder sales.

Conclusion

GST on flat purchase in India hinges on one simple factor — whether the property is under construction or already completed. Under-construction flats attract 1% GST (affordable housing) or 5% GST (other residential units), while ready-to-move-in and resale properties carry no GST at all. Understanding this distinction before you start house-hunting can meaningfully change your total budget and even influence whether you prefer a completed property over an under-construction one. For more guidance on financing your home purchase, visit the HomeFirst Finance blog.