GST on Under Construction Flats in Bengaluru

Two buyers stand in the same Bengaluru sales lounge looking at the same tower. One picks an under construction unit and pays 5 percent goods and services tax on the price. The other waits for the building to receive its occupancy certificate, buys a ready flat, and pays no GST at all. Same building, same floor plan, a tax gap that on a 1.2 crore flat is around 4 lakh rupees. That single distinction drives more buyer confusion than almost any other.

GST on housing is not a flat number, it turns on whether the property is under construction or completed, and whether it qualifies as affordable. Get the category right and the tax follows logically. Get it wrong and you either overpay or budget short. This guide explains how GST applies to a Bengaluru home and where the real savings and traps sit.

The short answer. A Bengaluru buyer pays 5 percent GST on an under construction flat in the standard category and 1 percent on a qualifying affordable home, both without input tax credit, while a ready property with an occupancy certificate attracts no GST. The trade off, the under construction route can offer a lower base price and payment in stages but carries GST and completion risk, whereas the ready flat costs more upfront yet is tax free and certain.

How much GST do you pay on a flat in Bengaluru?

GST applies only to under construction property. The standard rate is 5 percent of the agreement value with no input tax credit, and a qualifying affordable home is taxed at just 1 percent, also without credit. A ready to move flat that has received its occupancy certificate is outside the GST net entirely, so the buyer pays zero GST on it.

The rates and the affordable definition are set centrally and you can confirm the current position on the CBIC GST portal. The key mental model is simple, GST is a tax on construction services, so once construction is complete and certified, there is no service left to tax, which is why the occupancy certificate is the switch that turns GST off.

What counts as affordable housing for the 1 percent rate?

The 1 percent concessional rate applies to homes within defined size and price limits. In metro locations the carpet area must not exceed 60 square metres and the price must not exceed 45 lakh rupees, while in non metro locations the carpet area limit rises to 90 square metres with the same 45 lakh price cap. Both conditions must hold, area and price, for the flat to qualify.

Bengaluru as a metro uses the 60 square metre limit, so a compact, fairly priced unit can attract just 1 percent while a larger or pricier one in the same project sits at 5 percent. Buyers near the threshold should check the exact carpet area and price, because slipping just over a limit moves the whole purchase into the higher bracket.

Why is the occupancy certificate the dividing line?

The occupancy certificate marks the legal completion of a building. Before it is issued, a sale is treated as a supply of construction service and attracts GST. After it is issued, the flat is an immovable, completed property and its sale carries no GST. This is why two identical flats can carry different tax, the timing of the sale relative to the occupancy certificate decides it.

For a buyer this creates a clear lever and a clear caution. Buying after occupancy saves the GST, but a builder selling a ready flat must actually hold the occupancy certificate, not merely claim completion. Demand the certificate in writing, because a flat sold as ready without it is neither truly tax exempt nor safely completed.

How does the land deduction affect the tax you pay?

GST is charged on the construction component, not the land, so the law allows a deemed deduction of one third of the agreement value as the land portion before applying the rate. In practice the headline 5 percent and 1 percent already reflect this mechanism, which is why the effective tax on the total price is lower than the nominal rate on the full value would suggest.

Buyers do not usually compute this themselves, the developer applies it, but understanding it helps you sanity check an invoice. If a GST charge looks higher than the expected rate on the price, ask how the land deduction was treated. A correct invoice shows GST consistent with the 5 percent or 1 percent applied through the standard deemed land deduction.

Use this seven point checklist on GST before booking a Bengaluru flat.

1. Confirm whether the unit is under construction or ready with an occupancy certificate.
2. For a ready flat, demand the occupancy certificate in writing to confirm nil GST.
3. Check carpet area and price against the affordable limits for the 1 percent rate.
4. Remember Bengaluru uses the 60 square metre metro limit for affordable status.
5. Ask how the one third land deduction is reflected on your invoice.
6. Budget 5 percent GST on a standard under construction purchase.
7. Verify RERA registration alongside the GST position before paying.

Under construction or ready, what is the real trade off?

The under construction route often opens at a lower base price, lets you pay in construction linked stages, and gives a wider choice of units, but you carry 5 percent GST and the risk that completion slips. The ready flat costs more upfront and offers less choice, yet it is GST free, immediately usable, and free of completion uncertainty because you can see exactly what you are buying.

Neither is universally better. A disciplined buyer comfortable with construction risk and staged payment may find the under construction unit cheaper even after GST, while a buyer who values certainty and wants to avoid the tax will prefer ready. Pair this decision with a check that the developer is RERA registered and that, for a ready unit, the occupancy certificate exists. A relevant example is an under construction Bengaluru project like Assetz Mizumi Reserve in Kudlu, where the construction stage directly determines the GST you would pay.

What documents prove the GST position on your flat?

The GST you owe is only as certain as the documents behind it. For a ready flat claimed as GST free, the occupancy certificate is the proof, so insist on seeing it rather than accepting a verbal assurance of completion. For an under construction purchase, the builder GST invoice should show the rate applied and reflect the one third land deduction, letting you confirm that the 5 percent, or the 1 percent on a qualifying affordable unit, was charged correctly.

Affordable status needs its own paper trail. The 1 percent rate depends on the carpet area staying within 60 square metres for a metro like Bengaluru and the price within 45 lakh, so the agreement and the RERA carpet area disclosure together evidence eligibility. A unit that drifts over either limit moves to the standard 5 percent, and the documents are what settle which bracket applies if the position is ever questioned by you or the authorities.

Tie the GST check to your wider diligence rather than treating it in isolation. Confirm the project is RERA registered, read the builder buyer agreement for how GST and any future rate change are handled, and keep the invoices with your registered deed. PropNewz has covered the builder buyer agreement clauses that should address tax, so the GST position is documented and enforceable rather than assumed and forgotten.

Watch the timing of your purchase relative to completion. Buying just before the occupancy certificate means GST applies, while buying just after means it does not, so on a unit near completion the date can decide the tax. Do not let a developer rush a booking with a promise that occupancy is imminent, because until the certificate actually issues, the sale is an under construction supply and the GST is genuinely due.

The practical takeaway is that GST on a Bengaluru home is logical once you fix two facts, whether the flat is under construction or completed, and whether it qualifies as affordable. Demand the occupancy certificate for a ready unit, confirm the carpet area and price for the 1 percent rate, keep the invoices, and you will pay the right tax and be able to prove it later.

Frequently asked questions

How much GST is charged on an under construction flat in Bengaluru?

The standard rate is 5 percent of the agreement value with no input tax credit, while a qualifying affordable home is taxed at 1 percent, also without credit. A ready to move flat that has received its occupancy certificate attracts no GST, since GST applies only to under construction property.

Is there GST on a ready to move flat in Bengaluru?

No. A flat that has received its occupancy certificate is a completed property and its sale is outside the GST net, so the buyer pays zero GST. The occupancy certificate is the dividing line, which is why a buyer should demand it in writing before treating a ready flat as tax exempt.

What is affordable housing for the 1 percent GST rate?

In metro locations like Bengaluru, the home must have a carpet area up to 60 square metres and a price up to 45 lakh rupees. In non metro areas the carpet area limit is 90 square metres with the same price cap. Both the area and price conditions must be met for the 1 percent rate to apply.

Does GST apply to the land value of a flat?

GST is charged on the construction component, not the land. The law allows a deemed deduction of one third of the agreement value as the land portion, and the headline 5 percent and 1 percent rates already reflect this, so the effective tax on the total price is lower than the nominal rate on the full value.

Sources and tools, the CBIC GST portal, with prior PropNewz coverage of the builder buyer agreement clauses to check and the APF number for bank approved projects.

Last updated 2026-06-18. PropNewz Team.