GST 2.0 Impact on Real Estate & Construction: Cement, Steel & Works Contract Rates

Cement got cheaper. Steel didn't. Flats stayed exactly where they were. If you're a builder in Raipur trying to figure out what GST 2.0 actually means for your ongoing project's cost sheet, that one-line summary covers more ground than most of the general commentary floating around since September 2025. Here's the detail behind it.

Cement: The One Real Win on Input Cost

Cement was one of the more heavily taxed construction inputs under the old regime, sitting at 28% — the top slab, alongside items like automobiles and aerated drinks, which always felt a little out of place for something as basic as a construction material. Under GST 2.0, effective 22 September 2025, cement moved down to 18%. That's a full 10 percentage point reduction on one of the highest-value line items in any construction budget.

For a mid-sized residential project, this is not a rounding error. A standard 50 kg cement bag effectively costs meaningfully less purely from the tax drop, and a typical 1,500 sq ft home uses several hundred bags across the build. Scale that to a multi-tower residential project and the input cost saving on cement alone runs into real money on the project P&L — though how much of that saving should flow through to the buyer, versus absorbed into developer margin, is exactly the kind of question that's likely to attract scrutiny given the anti-profiteering conversation happening around GST 2.0 more broadly.

Steel: No Change, and That Matters for Cost Estimates

Steel and TMT bars — the other dominant input cost in any RCC structure — stayed at 18%. They were already at 18% before the reform, not 28%, so there was no reduction to apply here. This is worth stating plainly because we've had clients assume, reasonably enough given the "GST 2.0 cut construction costs" headlines, that steel dropped too. It didn't. If you're revising a project cost estimate post-reform, cement comes down, steel stays flat, and the net saving on your overall material bill is smaller than a "28% became 18%" mental shortcut applied across the board would suggest.

Works Contract Services: Rate Depends Entirely on Project Type

This is where the actual complexity sits for developers and contractors, because "works contract" isn't a single rate — it depends on what's being built and for whom.

A works contractor supplying pure construction services — labour plus materials bundled together, billed to a developer or directly to a government body — generally charges 18% and can claim full ITC on inputs used in the contract. A developer selling residential units directly to homebuyers under the concessional 1% or 5% scheme, by contrast, cannot claim ITC on inputs at all — this asymmetry between the contractor's ITC position and the developer's no-ITC position on residential sales predates GST 2.0 and wasn't touched by this reform. It's a structural feature of the residential GST scheme introduced back in 2019, not something new to check for.

Under-Construction Flat Pricing: Deliberately Left Alone

This is the point worth being precise about, because it's easy to assume a reform this broad touched everything. It didn't. The GST rate on sale of under-construction residential property to the end buyer — 1% for affordable housing, 5% for other residential, both without ITC — was not changed by the 22 September 2025 reform. These rates have held since April 2019 and GST 2.0 left them exactly where they were.

What did change, indirectly, is the developer's input cost through the cement rate cut. So while a homebuyer's own GST liability on the flat purchase price is unchanged, a developer building that flat now faces a somewhat lower material cost, which theoretically should translate into either better margins or lower base pricing before GST is applied — the GST rate on the sale itself is a separate number from the cost of building the thing being sold.

Practical Implications for Builders and RERA Promoters

For a RERA-registered promoter in Chhattisgarh managing an ongoing project, a few things are worth doing rather than assuming:

Re-run cost estimates for projects still in the procurement phase. If a large chunk of your cement purchase for a project happens after 22 September 2025, your revised project cost sheet should reflect the 18% rate, not the 28% figure that may still be sitting in an old CMA data or bank loan projection prepared before the reform.

Check contracts signed before the rate change. If you've entered into a fixed-price supply agreement with a cement or building materials vendor priced inclusive of the old 28% GST, the actual tax charged on invoices from 22 September onward should reflect 18%, regardless of what the contract's stated all-in price assumed. This is a straightforward "the tax component of your invoice is what the law says, not what a private contract assumed" situation, but it does mean reconciling old purchase orders against new billing.

ITC on cement stock held at transition. If you had cement inventory purchased and taxed at 28% before 22 September, that ITC remains fully available and doesn't get clawed back or reduced because the going-forward rate dropped. Rate changes are prospective for new supply, not retrospective adjustments to credit already validly claimed.

Anti-profiteering exposure, cautiously flagged. The formal Section 171 anti-profiteering mechanism stopped taking new complaints from April 2025, ahead of this September reform, with the Principal Bench of the GST Appellate Tribunal now handling residual cases. There's been reported discussion of the government considering some renewed mechanism to check whether input cost savings like the cement rate cut are being passed through to homebuyers via project pricing, but nothing formal has been notified specific to real estate as of this writing. We'd treat this as a "watch this space" item rather than a settled compliance obligation — worth keeping documentation of how input savings were factored into pricing decisions, more as good practice than as a response to a specific notified requirement.

For projects straddling the transition date — units booked before September, construction continuing after — the developer's own input costs shift mid-project even though the buyer's applicable GST rate on the sale doesn't. That mismatch is worth walking through explicitly with your project accountant rather than leaving it to surface at the next RERA quarterly update.

Related Advisory Services & Practice Guides

• CG RERA Registration in Raipur
• GST Advisory & Compliance