GST on Under-Construction Property in Navi Mumbai
GST is the single largest reason two flats quoted at the same rate can cost you very different amounts. It applies to under-construction purchases and not to completed ones, which means the choice between a launch and a ready flat is partly a tax decision whether you think of it that way or not. Most buyers only work this out after they have already fallen for a floor plan.
When does GST apply to a flat purchase?
GST applies when you buy a property that is still under construction — that is, before the project has received its completion or occupancy certificate. Once that certificate is in hand and the sale is of a completed unit, the transaction falls outside GST altogether.
That single line is the whole rule, and it is worth reading twice, because the cut-off is the certificate rather than whether the building looks finished. A tower that is physically complete but has not yet received its certificate is still an under-construction purchase for tax purposes.
It also means the developer's timing matters to your bill. If you are buying late in a project's life, ask directly where the completion certificate stands, because the answer changes what you owe.
How much GST will you actually pay?
The current scheme applies a lower concessional rate to units that qualify as affordable housing and a higher rate to everything else, in both cases without input tax credit being passed through to you. Which bracket your flat falls into depends on its carpet area and its value against the prescribed thresholds.
Because those rates and thresholds are set by notification and revised from time to time, confirm the applicable rate for your specific unit on the current CBIC schedule, or through your chartered accountant, rather than relying on any figure quoted in a sales office. Ask for it in writing on the cost sheet.
The practical impact is significant at every budget. On a Rs. 60 lakh purchase it is a meaningful sum; on a Rs. 2 crore purchase it can be more than the stamp duty. Model it explicitly before you compare an under-construction option against a ready one.
Is GST charged on the whole cost sheet or just the flat?
It applies to the taxable supply of the under-construction unit, but several other line items on a builder's cost sheet carry their own tax treatment, which is why the total on the sheet rarely equals a simple percentage of the base price.
Ask the developer to break the cost sheet into base consideration, statutory charges, and other charges, with the tax treatment shown against each line. Any builder who will not put that in writing is telling you something.
Note also that stamp duty and registration are computed separately and on their own basis — GST does not replace them. Our stamp duty and registration guide covers how that side is calculated and why the ready reckoner value can drive it above your agreement value.
Does this mean a ready-to-move flat is always cheaper?
Not always, but the tax difference is a real advantage that under-construction pricing has to overcome, and buyers routinely forget to make it do so. A ready flat with no GST and a launch price with GST are not comparable on headline rate alone.
Under-construction inventory still wins in plenty of cases: better entry pricing, more choice of stack and floor, staged payments that suit your cash flow, and the possibility of appreciation between booking and possession. Just make it win on an all-in basis rather than on the brochure rate.
Run both sides properly. Look at what is available ready to move across Navi Mumbai, compare it against the under-construction pipeline, and use the under-construction versus ready-to-move guide to weigh the non-financial trade-offs too.
What should you ask the developer about GST before booking?
Four questions, and get all four answered in writing on the cost sheet rather than verbally across a desk.
- Which GST bracket does this specific unit fall into, and on what basis — carpet area, value, or both?
- Where does the project stand on its completion or occupancy certificate?
- Is GST shown separately on the cost sheet, or is it bundled into a quoted all-inclusive figure?
- How is GST applied across the payment schedule — on each instalment as it falls due, or otherwise?
- Cross-check the answers against the full list of charges that sit outside the base price before you treat the quote as final.
