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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThere is no single GST input tax credit (ITC) percentage for construction projects in India. First test whether section 17(5) of the CGST Act blocks the credit; then identify whether the taxpayer is a contractor or a promoter, classify the project and its outward supplies, and apply either the ordinary apportionment rules or the applicable real-estate promoter rules. The result depends on invoice-level use and project-specific facts.
First decide which construction situation applies
A contractor’s taxable construction service and a promoter’s construction of apartments on its own account are not the same ITC question. The key distinction is how the inward supply is used and what the taxpayer supplies outward.
| Situation | Starting point for ITC | What to check |
|---|---|---|
| A works contractor supplies taxable works-contract or construction services | Credit is not automatically barred simply because the work concerns immovable property. A works-contract input service used for further supply of works-contract service is within the stated exception to the section 17(5) block. | Confirm the nature of the outward supply, the use of each inward invoice, and whether another restriction or apportionment applies. CBIC’s general FAQ points to ITC for paying output tax on construction/works-contract services, but it is not a complete answer for every project. |
| A promoter constructs an immovable property on its own account | Section 17(5) blocks goods or services used to construct immovable property on the taxable person’s own account, including construction in the course or furtherance of business, subject to the statutory treatment of plant and machinery. | Identify the project and outward supply regime, including whether the specified post-1 April 2019 residential promoter rules apply. |
In short, do not infer that a builder can claim all construction GST because the project is a business, or that a contractor and a promoter use the same calculation.
Apply the statutory block before apportioning credit
For each inward invoice, identify the goods or service, the project it serves, and the tax charged under each head: CGST, SGST or UTGST, and IGST. Then apply section 17(5) before deciding whether any amount belongs in eligible common credit.
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- Specified works-contract services used for construction of immovable property are blocked, except where the input service is used for further supply of works-contract service.
- Goods or services used to construct immovable property on the taxable person’s own account are blocked even when the construction furthers the business.
- The statutory definition of plant and machinery is specific. It excludes land, buildings or civil structures, telecommunication towers, and pipelines laid outside factory premises. Do not classify a construction item as eligible plant and machinery merely because it is used by a business.
Record any blocked credit separately. It should not be treated as eligible merely by including it in a common-credit pool.
Identify the project’s outward-supply regime
Contractor or other taxable construction supplier
If the taxpayer supplies taxable construction or works-contract services, assess the inward credit under the section 17(5) rules and ordinary allocation rules where applicable. The CBIC FAQ question, “What will be the Input Credit of newly launched project of building construction after 01.07.2017?”, is a useful starting point, not a project-specific ruling. The answer still depends on who is making the supply and how inputs and services are used.
Promoter supplying apartments
For a promoter, establish whether the project and apartment supplies fall within a specified post-1 April 2019 residential rate regime, whether the project is a Real Estate Project (REP) or Residential Real Estate Project (RREP), and whether a valid transition option applies. CBIC rate material describes specified residential construction at reduced rates without ordinary ITC, with project-specific calculations in Annexure I or II. Those rules should not be generalized to every commercial building, contractor, or real-estate project.
The detailed annexure computation must be checked against the applicable notification and amendments. Without that text and the project facts, a reliable rupee total or complete Annexure I/II calculation cannot be supplied.
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Classify each remaining invoice by its use
After excluding blocked items, assign each remaining invoice to one of four practical categories. This classification determines whether credit is directly eligible, excluded, or must be apportioned.
- Exclusively for taxable or zero-rated supplies: distinguish this directly attributable credit from common credit under the applicable rules.
- Exclusively for exempt supplies: exclude the directly attributable amount from eligible credit.
- For non-business use: remove the amount attributable to non-business purposes.
- Common or mixed use: allocate under the prescribed apportionment method rather than claiming the full amount.
Keep the classification at invoice level, supported by the invoice, project records, and a documented allocation basis. Where one invoice serves multiple projects or outputs, do not treat the entire tax amount as directly attributable to a single taxable project without support.
Use ordinary apportionment only where special project rules do not govern
The ordinary rules framework separates total input tax into amounts attributable to non-business use, exempt supplies, blocked credit, taxable or zero-rated supplies, and common credit. The exempt-supply share of common input and input-service credit is calculated using the prescribed E/F ratio. The exact figures and definitions must be taken from the rules applicable to the taxpayer and period; do not substitute a guessed ratio or apply the ordinary method where the promoter annexures govern.
Common capital goods
Common capital goods are treated differently from ordinary inputs and input services. The framework spreads common capital-goods credit over a five-year useful life: divide the common credit across 60 months, then apply the exempt-supply allocation to the residual-life monthly credit as prescribed. Maintain the acquisition and use details needed to determine the relevant period and allocation.
Check the specified residential promoter requirements
For a specified residential promoter under the post-1 April 2019 regime, the relevant CBIC rate material describes project-specific annexures and an 80% registered-supplier threshold. This is a procurement condition, not the percentage of ITC the promoter may claim.
- Determine whether the relevant project is an REP or RREP and use the applicable annexure and rate option.
- Compile project-wise procurement values and supplier registration status to test the threshold.
- Check the stated exclusions from the threshold, including development rights, long-term land lease or FSI, electricity, and specified fuels.
- Where the threshold is short, verify the described 18% reverse-charge mechanism against the current notification and the exact inward-supply categories.
- Check cement received from an unregistered supplier separately; the material describes separate reverse-charge treatment for cement.
These details are technical and depend on the current notification text, project classification, and the character of each procurement. Confirm them before filing rather than treating the threshold or reverse-charge treatment as universal for real estate.
Calculate and reconcile the project credit
- Build the invoice ledger. Record invoice date and number, supplier registration status, project, cost type, tax head, and tax amount.
- Screen eligibility. Mark section 17(5) blocks and any other directly excluded amount before calculating common credit.
- Assign use. Identify each eligible amount as attributable to taxable or zero-rated supplies, exempt supplies, non-business use, or common use.
- Select the method. Apply ordinary apportionment where it governs; for a specified residential promoter, use the applicable project annexure and rate regime.
- Calculate by tax head and project. Preserve separate CGST, SGST or UTGST, and IGST amounts, and do not blend one project’s credit or adjustments with another without an applicable basis.
- Reconcile project facts and adjustments. Retain output turnover and, where the annexure requires it, area data; verify completion-certificate or first-occupation dates and any project-specific final calculation, true-up, or reversal.
- Check reporting requirements. Confirm the applicable form, return period, notification amendments, and treatment before reporting the result.
Records needed before you can produce a defensible figure
- Tax invoices and credit notes, with tax-head breakouts.
- Supplier registration status and the procurement details needed for any registered-supplier threshold or reverse-charge test.
- Cost type, project identifier, and evidence of direct or common use.
- Project and apartment classifications, the applicable rate option, and whether the project is an REP or RREP.
- Output turnover and any area information required by the applicable annexure.
- Completion-certificate and first-occupation dates, plus records of project-specific allocation and adjustments.
Keep the project-wise ledger and allocation workings with the supporting records. The legal method and final amount depend on the project category, the period, the inward-supply facts, and the current applicable law.
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