GST on Society Redevelopment in Mumbai: What Members Must Know

When your building is redeveloped, GST (Goods and Services Tax) can apply to the construction work — but not to every part of the deal, and usually not as a separate bill that lands on a member who is simply getting a like-for-like flat back. GST replaced the older service tax and state VAT from 1 July 2017 and is charged on construction as a service. The flat your society hands back to you (the “rehab” or rehabilitation flat) is treated differently from the extra flats a developer builds to sell in the open market, and a fully-completed flat sold after its completion certificate carries no GST at all. This guide explains, in plain language, where GST fits in a Mumbai society redevelopment, who normally bears it, and the exact clauses to pin down in your Development Agreement (the master contract between your society and the developer) before you sign.

What changed in 2017: GST replaced the old taxes

Before July 2017, an under-construction flat in Maharashtra attracted two separate taxes — service tax (a central tax on the construction service) and VAT (a state tax). This was confusing, and the two often overlapped. From 1 July 2017, both were merged into a single GST. So for any redevelopment moving ahead today, GST is the relevant construction tax; service tax and VAT no longer apply. This is the current position, and it is the one your society should plan around.

One more thing changed along the way. When GST first started, construction attracted a higher rate but the developer could claim “input-tax credit” (a set-off for the GST the developer itself paid on cement, steel and other inputs). From April 2019 the structure was revised: residential construction now generally attracts a lower, concessional rate without input-tax credit, with an even lower rate for qualifying affordable housing. Because these rates and rules have been revised more than once, this guide keeps the numbers general on purpose — only a practising Chartered Accountant (CA) can confirm the exact rate for your specific project on the day you sign.

The one GST rule that matters most

Here is the single idea that explains almost everything about GST in redevelopment: GST is charged only while a building is under construction. A completed flat is not taxed under GST at all.

Under GST law, the sale of a finished building — one sold after it receives its completion certificate (the municipal certificate confirming the building is built as sanctioned) or after first occupation — is treated as the sale of immovable property. That is neither a “supply of goods” nor a “supply of services”, so no GST applies. But while the flat is still being built and is booked before that certificate, GST applies because you are effectively buying a construction service. Keep this “under construction vs. completed” line in mind as you read on — every part of a redevelopment sits on one side of it or the other.

Redevelopment has two kinds of flats

A society redevelopment produces two very different kinds of flats, and GST treats them differently.

1. Rehab (member) flats

These are the flats the developer builds to give existing members back — usually your old carpet area plus an agreed extra percentage, handed over “free” in exchange for the society parting with development rights and the additional building potential on the plot. In tax language this is a barter: the members give development rights (and any TDR — Transferable Development Rights — loaded onto the plot), and the developer gives construction in return. Tax authorities have framed special valuation and reverse-charge rules for this exchange of construction against development rights. For most members receiving a same-size replacement flat, the practical result is that the developer accounts for this GST rather than the member getting a separate bill — but this is a technical and litigated area, so it must be spelled out in your agreement and checked with a CA.

2. Sale (open-market) flats

These are the extra flats the developer builds on the freed-up building potential and sells to outside buyers to fund the project and make a profit. If an outside buyer books such a flat while it is still under construction, GST applies to that sale in the normal way — and it is the outside buyer, not your society, who pays it. If a flat is sold only after the completion certificate, no GST applies. As a member, sale flats rarely put GST in your pocket; they matter mainly because they decide how financially strong the offer is.

Which parts of your redevelopment attract GST

This table shows, in general terms, where GST typically sits in a Mumbai redevelopment. Treat it as a map, not as a final ruling for your society — your facts and your agreement decide the outcome.

The row most likely to affect your own wallet is the second one — extra area. If you are thinking of buying additional carpet area from the developer, estimate the area and rough cost first with our additional area calculator, and remember to add GST on top of the developer's rate when you budget.

A worked example

Suppose Mrs. Shah owns a 550 sq ft carpet flat. The developer offers 25% extra, so her free rehab flat is about 690 sq ft. She also chooses to buy an additional 100 sq ft at the developer's rate, and she will receive a corpus amount plus monthly rent while the building comes up. Here is how GST typically plays out (figures kept illustrative, rates kept general):

• The 690 sq ft rehab flat: in a normal like-for-like deal, Mrs. Shah does not get a separate GST bill for this. The developer accounts for GST on the rehab construction as part of the barter for development rights — subject to what the agreement says.
• The 100 sq ft extra she buys: GST generally applies on the price she pays for this extra area, at the concessional residential rate and normally without input-tax credit. She should budget for GST on top of the quoted price.
• Corpus and monthly rent she receives: these are amounts coming to her, not a supply she makes, so they generally sit outside GST. She should still keep clean records.
• Stamp duty on her new agreement: a separate cost under the Stamp Act — unrelated to GST.

The lesson: the tax that can genuinely land on a member is GST on extra area, and possibly on optional amenities or parking — not on the basic flat you are entitled to.

GST, income tax and stamp duty are three different taxes

Members often lump every tax together and panic. It helps to separate them clearly, because each is charged by a different authority on a different thing:

• GST — a central tax on construction. Relevant mainly to extra area you buy and to the developer's sale flats.
• Capital-gains tax — income tax on your profit, under Section 45(5A) of the Income-tax Act, 1961; for individuals and HUFs in a registered redevelopment it is triggered only when the completion certificate is issued. There is also a separate 1% TDS (tax deducted at source) rule under Section 194-IA where a property's consideration or stamp-duty value is Rs 50 lakh or more — something to watch when buying substantial extra area.
• Stamp duty — a state tax under the Maharashtra Stamp Act, 1958, on the value of your new agreement, calculated using the Ready Reckoner (the government's Annual Statement of Rates).

They can all touch the same redevelopment, but they never merge into one bill. Keeping them separate stops a developer or broker from over-stating “the taxes” to pad the deal.

Who actually bears the GST?

For the rehab flat, the general and reasonable position is that the developer bears the GST arising from the exchange of construction for development rights, because that GST is a cost of the project the developer has agreed to build. For extra area and optional add-ons, the member usually bears the GST on what they choose to buy. The problem is not the principle — it is silence. Many disputes start because a Development Agreement simply says “taxes as applicable” and no one asked which taxes, on which part, borne by whom. When you compare rival proposals, a deal that clearly makes the developer bear GST on the rehab component is worth more than one that leaves it vague; our offer comparison tool helps you line up such terms side by side.

It is also worth knowing that under RERA, 2016 the developer is the “promoter” and must be registered before advertising or selling flats — and MahaRERA has held that a redeveloping society can itself be a promoter or co-promoter. A GST-registered, RERA-registered developer is the baseline; anyone unwilling to put tax responsibility in writing is a warning sign.

What this means for your society

Before your general body approves a developer, make sure the tax position is nailed down in writing. A short checklist:

• Name the tax responsibility. The agreement should state, in plain words, who bears GST on the rehab flat, on any extra area, and on amenities or parking — not a blanket “taxes as applicable” line.
• Confirm registrations. Insist the developer is GST-registered and MahaRERA-registered, with numbers recorded in the agreement.
• Separate corpus and rent. Have corpus, rent and hardship allowance described clearly as payments to members so their tax treatment is not muddled; our possession & corpus guide explains how these work.
• Budget GST on extras. If members plan to buy extra area, tell them upfront to add GST to the rate quoted.
• Get a CA to review the tax clauses before signing — GST on development rights is genuinely technical, and a one-hour review can prevent years of dispute.

Where to find the official rule

GST is a central tax. The rate and the special rules for construction and for development rights are decided by the GST Council and notified by the Central Board of Indirect Taxes and Customs (CBIC); the current notifications and rates are published on the official Government of India GST portal. Your income-tax position, including capital gains under Section 45(5A) and TDS under Section 194-IA, sits with the Income-tax Department on the official Income-tax portal, and stamp duty with the Government of Maharashtra under the Maharashtra Stamp Act. Because GST rates and the construction rules have been revised more than once since 2017, this guide deliberately avoids quoting a fixed percentage — always confirm the current figure for your specific project with a practising Chartered Accountant, and keep the tax clauses of your agreement, along with the FSI and area numbers, in writing.