The 56th GST Council recommended reducing GST on cement from 28% to 18%
Rules
- The 56th GST Council recommended reducing GST on cement from 28% to 18%
- A cement rate cut does not change the separate GST treatment of a works contract or immovable-property ITC restrictions
- Builders should distinguish material procurement tax from output-supply tax and blocked-credit rules
- Purchase invoice date and eligible ITC trail should be reconciled
Practical analysis
The cement rate change from 28% to 18% from 22 September 2025 affects the cement line item, but it does not by itself determine the GST rate of a works contract or construction service. Contractors must separate the tax rate on cement purchased as an input from the output-service classification. A lower input rate can change project cost and ITC accumulation even where the output contract rate remains governed by the service notification.
Transition stock should be handled through normal supply and invoice rules. Cement bought at the earlier rate can still carry eligible input credit if the statutory conditions are met; the output sale after the effective date uses the applicable new rate based on time of supply. There is no general principle that old inventory must be sold at the old rate simply to “match” the purchase tax.
Real-estate promoters also need to keep special RCM/ITC restrictions in view where the project tax scheme imposes separate rules for cement from unregistered suppliers or blocked/restricted credit. The headline 18% product rate should therefore be integrated into the project-specific GST model rather than used as a standalone construction-tax answer.
The cement rate cut changes the input invoice but not the legal character of the buyer’s output supply. A trader reselling cement applies the goods classification; a contractor billing a works contract applies the service rules; a real-estate promoter may have additional project-specific credit and reverse-charge restrictions. Mixing these layers can produce the wrong conclusion that every construction invoice automatically fell from 28% to 18% when cement itself changed rate. Contract pricing deserves a separate check from tax classification. A fixed-price construction contract may not automatically pass the full cement tax reduction to either party, while a cost-plus contract may do so through the agreed formula. Review tax-change clauses, purchase orders and credit-note terms before booking a commercial adjustment. The GST return should still follow the legal tax treatment; a private pricing dispute cannot justify using an obsolete tax rate on the invoice.
Decision table
| Fact pattern | Treatment |
|---|---|
| Cement supplied after 22 Sep 2025 | Apply the notified 18% rate for the cement entry. |
| Works contract invoice after reform | Classify the service separately; input cement rate does not automatically become output service rate. |
| Old stock purchased at 28%, sold later | Use eligible ITC and apply new output rate according to time-of-supply rules. |
Worked examples
A dealer supplies cement with taxable value ₹3,20,000 after the notified rate change. At 18%, output GST is ₹57,600, subject to the cement entry and supply date being correctly identified. Result: ₹3,20,000 × 18% = ₹57,600.
A contractor purchases cement but supplies a works contract for construction. The cement purchase rate does not by itself determine the GST on the works-contract supply or the recipient's ITC position. Result: Separate the goods purchase, works-contract tax treatment and immovable-property ITC analysis.
A contractor holds cement purchased before 22 September 2025 with tax charged at the old rate and uses it in a works contract billed after the change. The contractor should preserve the purchase ITC trail and apply the output tax according to the works-contract/service classification, not simply mirror the cement purchase rate. If cement is instead resold as goods after the effective date, the output invoice follows the applicable goods rate and transition rules even though the stock was acquired earlier.
Mistakes
- Applying 18% cement rate to the entire construction service without classification.
- Trying to match old-stock output rate to old purchase rate.
- Ignoring promoter-specific ITC/RCM rules.
- Failing to update ERP and contract-price workings after the rate change.
Documents
- Cement purchase/sale invoices around effective date
- CBIC/GST Council rate material
- Works-contract/service classification and contract
- Project ITC/RCM reconciliation where applicable
Action steps
- Update cement item master to the notified rate from effective date.
- Reconcile transition stock and input credit.
- Keep works-contract/service rate analysis separate.
- Review project costing and price-escalation clauses.
- Check promoter RCM/ITC conditions if relevant.
- Verify the first post-change returns against invoice tax codes.
FAQs
What is the GST rate on cement after 22 September 2025?
The reform reduced the cement rate to 18% under the notified goods entry.
Does that make a works contract taxable at 18%?
Not automatically. Works-contract/service classification is a separate output-tax question.
What happens to old cement stock bought at the earlier rate?
Eligible input credit and the new output rate are reconciled under normal GST rules; purchase date alone does not fix the later sale rate.
Why should real-estate promoters do a separate review?
Project schemes can have special ITC and reverse-charge conditions, including rules connected with cement procurement.
Sources
- GST Council — FAQs on 56th GST Council decisions — 22 September 2025 reform transition.
- CBIC — GST goods/services rates — Current cement goods rate schedule.
Educational reference; verify the current official instrument and your facts.