ITC on Construction of Building: Section 17(5), Blocked Credit & GST Guide

Section 17(5) of the CGST Act, 2017 is the most critical and litigated provision concerning Input Tax Credit in the construction sector. It lists specific circumstances where ITC is blocked (i.e., not available). The full text of the relevant clauses reads:

Explanation to Section 17(5): The explanation defines key terms:

• "Construction": Includes re‑construction, renovation, additions, alterations, or repairs to the extent of capitalisation in the books of accounts.
• "Plant and Machinery": Means apparatus, equipment, and machinery fixed to earth by foundation or structural support that are used for making outward supply of goods or services, and includes such foundation and structural supports. It does not include land, building, or any other civil structure.

Together, these clauses effectively block ITC for any person constructing an immovable property for their own use — even if that property is used 100% for business. The only escape is the "plant and machinery" exception, which is narrowly defined and has been the subject of extensive litigation.

The construction of commercial buildings — corporate offices, shopping malls, retail stores, warehouses, hotels, hospitals, and business parks — is one of the most significant capital expenditures for any enterprise. Under the GST regime, the tax treatment of Input Tax Credit on such construction is governed by Section 17(5)(c) and (d) of the CGST Act, 2017, which creates a near‑absolute bar on ITC when the building is constructed for one’s own account. The law draws a sharp line: a contractor who builds a commercial project for a client is entitled to ITC because he is making a taxable supply; the client who receives that building for his own use is not. This distinction is fundamental and applies irrespective of whether the building is used wholly for business purposes.

🔹 The Legal Framework – Section 17(5)(c) and (d)

The two clauses that block ITC on commercial building construction read as follows:

• Section 17(5)(c): Works contract services when supplied for construction of an immovable property (other than plant and machinery) on his own account including when such goods or services or both are used in the course or furtherance of business.
• Section 17(5)(d): Goods or services or both received by a taxable person for construction of an immovable property (other than plant and machinery) on his own account including when such goods or services or both are used in the course or furtherance of business.

The phrase “on his own account” is crucial. It covers two common scenarios:

• Departmental construction: The business purchases cement, steel, bricks, tiles, electrical fittings, and other materials directly, hires labour, and constructs the building itself. ITC on all these materials is blocked under clause (d).
• Construction through a contractor: The business engages a contractor who supplies both materials and labour (a works contract). The contractor charges 18% GST on his invoice. The business cannot claim ITC on this GST under clause (c). The contractor, however, can claim ITC on all his inputs.

🔹 The Owner vs. Contractor ITC Distinction

The GST law does not block ITC for the person who is constructing the building for someone else. It only blocks ITC for the person who will own and use the building. This creates a layered ITC structure:

• Raw material supplier → Contractor: The contractor purchases steel, cement, etc., and claims full ITC (18%).
• Contractor → Owner (business): The contractor issues a works contract invoice under SAC 9954, charging 18% GST on the total contract value. The owner pays the invoice including GST but cannot claim ITC on this GST because it is a works contract service for construction of own immovable property.
• Owner → End customer (if the building is rented or used for further taxable supplies): The owner can charge GST on rent or on the goods/services provided from that building, and can claim ITC on operational inputs (electricity, maintenance, security) — but never on the original construction cost.

🔹 The Plant and Machinery Exception

The only statutory escape from the ITC block is the “plant and machinery” exception. The explanation to Section 17(5) defines plant and machinery as apparatus, equipment, and machinery fixed to earth by foundation or structural support that are used for making outward supply of goods or services. The definition expressly excludes land, building, or any other civil structure.

Therefore, the commercial building itself — its walls, roof, floors, columns, beams — is not plant and machinery. However, specific items inside the building that meet the definition may qualify. Examples of items that may qualify for ITC:

• An industrial oven fixed to the factory floor with a specially designed foundation.
• A large printing press bolted to a concrete base that is integral to its operation.
• An escalator or elevator that is an apparatus fixed to the building structure and used for making taxable supplies (e.g., in a mall).

Even for these items, only the apparatus itself and its immediate foundation/support qualify. The surrounding building structure does not. Businesses must meticulously document which civil costs relate to the qualifying plant and machinery and which relate to the general building.

🔹 Impact of the Finance Act 2025 – Retrospective Narrowing

The Finance Act 2025 amended Section 17(5)(d) retrospectively from 1 July 2017, replacing the phrase “plant or machinery” with “plant and machinery”. Prior to this amendment, some taxpayers argued that the use of “or” meant that “plant” and “machinery” were separate categories, and that a building could qualify as “plant” under a broader functional test. This argument had found support in the Supreme Court’s Safari Retreats judgment, which held that if a building is an essential part of providing the taxable service (like a mall generating rental income), it could be considered “plant”.

The retrospective amendment overrides that interpretation. The law now unequivocally requires both “plant” and “machinery” as a combined term, defined strictly in the explanation. This significantly narrows the exception. Businesses that claimed ITC on their own commercial building based on the Safari Retreats reasoning must reassess those claims. The department may demand reversal with interest and penalty. Consulting a GST professional is strongly advised.

🔹 Special Scenarios

• Rented Commercial Property: If a business constructs a commercial property and rents it out, the ITC on construction remains blocked. The rental income is taxable at 18% GST, and the owner can claim ITC on operational expenses (maintenance, repairs, security) — but not on the original construction. The Safari Retreats judgment had given hope on this point, but the retrospective amendment has effectively closed the door.
• Mixed‑Use Buildings (e.g., ground‑floor shop + upper‑floor residence): ITC is fully blocked on the entire construction cost. There is no apportionment for the commercial portion. The explanation to Section 17(5) states that "construction" includes the whole of the immovable property. If any part is for own use, the entire ITC may be blocked, unless the building is a plant and machinery.
• Hotels and Hospitals: Construction of a hotel or hospital on own account is blocked for ITC. The operator can claim ITC on operational inputs (linen, medicines, equipment) but not on the building. If a contractor builds a hotel for a client, the contractor can claim ITC, but the hotel owner cannot claim ITC on the contractor's invoice.
• Repairs and Renovation vs. Capital Construction: Routine repairs and maintenance that are treated as revenue expenditure generally allow ITC. However, major renovation that is capitalised in the books of account is treated as "construction" under the explanation to Section 17(5) and ITC is blocked. The accounting treatment — capitalisation vs. revenue expense — is key.

🔹 Practical Compliance Strategies

• Separate Accounting: Maintain distinct cost centres for the building shell and for identifiable plant and machinery. Only the latter qualifies for ITC.
• Contractor Invoicing: If engaging a contractor, request separate invoices for general construction (blocked) and for installation of qualifying plant and machinery (available). Ensure the contractor uses SAC 9954 and provides detailed descriptions.
• Documentation: Preserve all contracts, invoices, and technical specifications. For plant and machinery claims, prepare a CA‑certified statement demonstrating how each item meets the statutory definition.
• GSTR‑3B Reporting: Report eligible ITC in Table 4(A) and reverse ineligible ITC (for the building shell) in Table 4(B)(2) of GSTR‑3B every month. Do not wait for year‑end.
• Annual Review: Conduct a comprehensive GST health check before filing GSTR‑9 to ensure that no blocked ITC has been inadvertently claimed on own‑use construction.
• Consultation: Given the complexity introduced by the Finance Act 2025 and the narrowing of judicial interpretations, obtain a professional opinion before making any ITC claim on commercial construction.

Construction of any building for "own use" — whether it's a residence, office, godown, staff quarters, or hospital — triggers the ITC block under Section 17(5). The law does not distinguish between personal and business use; it blocks ITC on all own‑use construction. The block applies even if the building is capitalised in the books and used for providing taxable services. The only exception is if the building itself qualifies as "plant and machinery" — for example, a cold storage room where the structure is integral to the machinery. This is a high evidentiary burden.

The construction of a factory is one of the most capital‑intensive investments for any manufacturing business. Under GST, the ITC treatment is split: the building itself — the shed, walls, roof, columns, floors, and administrative offices — falls squarely under the ITC block of Section 17(5)(c) and (d), while the plant and machinery installed within — and the civil structures integral to that machinery — may qualify for ITC under the carefully defined exception. This distinction is at the heart of almost every GST audit of a manufacturing entity. Getting it wrong can result in reversal of lakhs or crores of ITC, plus interest and penalty.

🔹 The Legal Framework – Section 17(5) and the Explanation

The ITC block on factory construction is anchored in two clauses of the CGST Act:

• Section 17(5)(c): Blocks ITC on works contract services supplied for construction of an immovable property on own account, other than plant and machinery.
• Section 17(5)(d): Blocks ITC on goods or services received for construction of an immovable property on own account, other than plant and machinery.

The Explanation to Section 17(5) defines two key terms that govern the factory scenario:

• "Construction" includes re‑construction, renovation, additions, alterations, or repairs, to the extent of capitalisation in the books of accounts.
• "Plant and Machinery" means apparatus, equipment, and machinery fixed to earth by foundation or structural support that are used for making outward supply of goods or services, and includes such foundation and structural supports. It expressly excludes land, building, or any other civil structure.

Therefore, the factory building — its concrete shell, brick walls, roofing, flooring, and internal partition walls — is a "civil structure" and is expressly excluded from the definition of plant and machinery. The consequence is that ITC on all materials (cement, steel, bricks, tiles) and works contract services used for constructing the factory shell is blocked. However, a specific civil foundation that is structurally and functionally integral to a qualifying machine may itself qualify as part of "plant and machinery" and thus be eligible for ITC.

🔹 The Critical Distinction – Building Shell vs. Machinery Foundation

🔹 What Qualifies as "Plant and Machinery" in a Factory?

To claim ITC on civil structures within a factory, the assessee must demonstrate that the structure meets the statutory definition of "plant and machinery". The Supreme Court in Safari Retreats Pvt Ltd vs. Chief Commissioner of CGST (2024) and various High Courts have examined this definition. Post‑Finance Act 2025, the definition has been tightened retrospectively. A civil structure qualifies as plant and machinery only if:

1. It is an apparatus, equipment, or machinery (or its foundation/support).
2. It is fixed to earth.
3. It is used for making outward supply of goods or services.
4. It is not a land, building, or general civil structure.

Examples of items that have been held to qualify (depending on facts) include:

• Turbine foundation: A reinforced concrete block specifically designed to absorb vibration and support a power‑generating turbine. Without this foundation, the turbine cannot function. ITC on the foundation is available.
• Boiler support structure: A steel framework that holds a boiler in place and is integral to its operation.
• Conveyor belt support gantry: A structural frame that supports a conveyor belt used to move goods within the factory.
• Effluent treatment plant (ETP) civil works: If the ETP is a statutory requirement for the factory to operate, the civil structures forming part of the ETP may qualify as plant and machinery. This is fact‑intensive and requires expert certification.

Items that do not qualify include:

• The factory shed that provides weather protection.
• The general floor and foundation slab of the factory.
• The compound wall, drainage, and approach road.
• Staff canteen, toilet block, or restroom.

🔹 Impact of the Finance Act 2025 – Retrospective Narrowing

The Finance Act 2025 amended Section 17(5)(d) retrospectively from 1 July 2017. Prior to the amendment, the clause blocked ITC on goods or services used for construction of immovable property on own account, with the exception: "other than plant or machinery". Some taxpayers argued that the word "or" meant that "plant" and "machinery" were separate categories, and that a building could qualify as "plant" under a functional test. The Supreme Court in Safari Retreats had given some support to this view, holding that a building that is essential for the provision of a taxable service (like a mall) could be considered "plant".

The Finance Act 2025 substituted "plant or machinery" with "plant and machinery", aligning the phrase with the strict definition in the Explanation. The change is retrospective, meaning that from 1 July 2017 onwards, the exception applies only to items that meet the combined "plant and machinery" definition — i.e., apparatus fixed to earth used for outward supply, excluding buildings and civil structures. Factories that claimed ITC on the building shell based on a broader "plant" interpretation are now exposed to demand for reversal with interest and penalty. It is imperative to review past claims and, if necessary, voluntarily reverse the ITC to avoid litigation.

🔹 The Contractor's ITC Position

A contractor engaged to build a factory for a manufacturer provides a taxable works contract service (SAC 9954, 18% GST). The contractor can claim full ITC on all materials and services he uses — steel, cement, labour, equipment rental, etc. — because his output is taxable. This is true regardless of whether the factory owner can claim ITC on the contractor's invoice. The factory owner pays the contractor's invoice (including 18% GST) but cannot claim ITC on the portion attributable to the building shell. However, if the contractor's invoice separately identifies work on qualifying plant and machinery (e.g., "Civil foundation for turbine – ₹5,00,000"), the factory owner may claim ITC on that specific portion, subject to documentation and audit.

🔹 Special Scenarios in Factory Construction

• Captive Power Plant: A captive power plant that generates electricity for the factory is generally considered plant and machinery. Civil works for the power plant (turbine hall, generator foundation) may qualify for ITC. However, the administrative building attached to the power plant would be blocked.
• Effluent Treatment Plant (ETP) and Sewage Treatment Plant (STP): Where these are statutorily mandated for the factory to operate, the civil structures forming part of the ETP/STP have been held by some authorities to be plant and machinery. However, this is a contested area. It is advisable to obtain a professional opinion and maintain strong documentation.
• Conveyor Galleries and Pipe Racks: Structures that support material‑handling equipment (conveyor belts, pipelines for raw material or finished goods) may qualify as plant and machinery if they are integral to the manufacturing process and not merely building structures. Courts have differed on this point, and the matter is fact‑intensive.
• Warehouse within the Factory: A warehouse used to store raw material or finished goods is generally a building (blocked), not plant and machinery. Even if the warehouse is essential for the business, the statutory definition excludes buildings.

🔹 Practical Compliance Strategies for Factory Construction

• Separate Invoicing: Insist that the contractor provides separate invoices for the building shell (blocked) and for qualifying plant and machinery foundations (available). This creates a clear audit trail.
• Detailed Project Records: Maintain a cost breakdown of the factory construction project, mapping each line item to the relevant ITC treatment (blocked vs. available).
• CA/Engineer Certification: Obtain a certificate from a Chartered Accountant and a structural engineer identifying which civil structures meet the definition of "plant and machinery". This is the single most important piece of evidence during an audit.
• GSTR‑3B Reporting: Report only the eligible ITC (on plant and machinery foundations) in Table 4(A). Do not claim ITC on the building shell. If you have inadvertently claimed it, reverse it in Table 4(B)(2) voluntarily.
• Capitalisation in Books: Ensure that the accounting treatment reflects the distinction — the building shell is capitalised as "Factory Building", while the machinery foundations are capitalised as "Plant and Machinery". The accounts should match the GST treatment.
• Pre‑Audit Review: Factory ITC is a high‑risk area. Conduct an annual review with a GST professional before filing GSTR‑9 to identify and correct any inadvertent claims on the building shell.

Unlike new construction, where ITC is categorically blocked for own‑use buildings, the ITC treatment of renovation, repairs, and maintenance hinges on a single, critical parameter: whether the expenditure is capitalised in the books of accounts. The Explanation to Section 17(5) of the CGST Act, 2017 provides that "construction" includes re‑construction, renovation, additions, alterations, or repairs — but only to the extent of capitalisation. This means that the same physical activity — painting a wall — can yield entirely different ITC outcomes depending on whether the accountant debits it to the Profit & Loss Account (revenue expense) or adds it to the cost of the building in the Balance Sheet (capital expenditure). This distinction is at once simple in principle and complex in practice, and it is a frequent area of dispute in GST audits.

🔹 The Legal Framework – Explanation to Section 17(5)

The Explanation to Section 17(5) defines "construction" as follows:

This definition has two critical components:

• First limb – "Includes": It expands the ordinary meaning of "construction" to cover not just new construction but also re‑construction, renovation, additions, alterations, and repairs. Without this expansion, the ITC block might have been argued to apply only to greenfield construction. The legislature deliberately brought post‑construction activities within the net.
• Second limb – "To the extent of capitalisation": This is the saving grace. The expansion operates only to the extent the expenditure is capitalised. If the expenditure is treated as revenue (debited to P&L), it is not "construction" within the meaning of this Explanation, and the ITC block under Section 17(5) does not apply. The expenditure is then treated as an ordinary business input, and ITC is available under Section 16, subject to the usual conditions.

Thus, the accounting treatment — a matter of management judgment and accounting standards — becomes the sole determinant of ITC eligibility for renovation and repairs. This places a significant responsibility on the business's accounting function and its GST compliance team to coordinate their positions.

🔹 Revenue Expenditure vs. Capital Expenditure – The Accounting Test

The distinction between revenue and capital expenditure is well‑settled in Indian accounting and tax law, though its application can be fact‑intensive. The following table summarises the general principles and their ITC consequences:

The key takeaway is that routine, non‑structural maintenance generally allows ITC, while structural, value‑enhancing renovations that are capitalised attract the ITC block. However, the business must be prepared to defend the accounting classification during an audit.

🔹 Detailed Examples – Applying the Capitalisation Test

🔹 Special Considerations for Leasehold Improvements

When a tenant carries out renovations in a rented commercial property, the GST treatment differs from that of an owner‑occupied building. The tenant does not own the building; the renovation is an expenditure for business operations. Key points:

• Accounting treatment: Leasehold improvements are typically capitalised by the tenant as an intangible asset or as "Leasehold Improvements", not as part of the building's cost. Even if capitalised, it can be argued that the expenditure is not "construction on own account" because the tenant does not own the immovable property. The ITC block under Section 17(5) applies to construction of an immovable property on one's own account. A tenant improving a landlord's property may not fall within this block.
• Judicial view: While there is no definitive Supreme Court ruling on this point, various Advance Rulings have held that a tenant's renovation expenditure on a rented property is a business expense eligible for ITC, as the tenant is not constructing an immovable property for itself. However, the matter is not entirely settled, and businesses should maintain strong documentation and consider a professional opinion.
• Practical approach: If the tenant treats the renovation as a revenue expense (e.g., debiting it to P&L over the lease term), ITC is generally safe. If it is capitalised as a leasehold asset, the position is more nuanced, and it is advisable to disclose the claim and be prepared to defend it.

🔹 The Contractor's Perspective

A contractor performing renovation or repair work for a business provides a taxable works contract service (SAC 9954, 18% GST). The contractor's ITC on materials (paint, cement, tiles, electricals, hardware) is fully available, because the contractor is making a taxable supply. The contractor's ITC is unaffected by whether the client capitalises the expenditure or not. The contractor must:

• Issue a tax invoice under SAC 9954 with 18% GST.
• Claim ITC on all materials purchased for the renovation project, subject to GSTR‑2B matching.
• Upload the invoice in GSTR‑1 on time so that the client can claim ITC (if eligible) or account for it correctly.

The client's ITC eligibility is determined solely by the client's own accounting treatment and the nature of the building (own‑use vs. rented).

🔹 Practical Compliance Checklist for Renovation and Repairs ITC

• Before claiming ITC on any renovation or repair invoice, determine whether the expenditure is capitalised in the books of accounts.
• For routine maintenance (repainting, minor repairs, tile replacement), debit the expense to P&L and claim ITC. Maintain documentation showing the nature of the work.
• For major structural renovations that are capitalised, do not claim ITC. If ITC is inadvertently claimed, reverse it in GSTR‑3B Table 4(B)(2).
• If a single contractor invoice covers both capitalised and revenue portions, request separate invoices. If not possible, apportion the ITC based on the work value and reverse the blocked portion.
• For leasehold improvements in a rented office, assess the accounting treatment and consider obtaining a professional opinion. If the expenditure is revenue, claim ITC. If capitalised, evaluate the risk and document the reasoning.
• Coordinate with the accounts department to ensure that the GST treatment of renovation expenses aligns with the accounting treatment. Mismatches are a red flag during audit.
• Retain copies of all renovation contracts, invoices, and accounting entries for at least 6 years.

Section 17(5) of the CGST Act, 2017 is a near‑absolute bar on Input Tax Credit for construction of immovable property. However, the legislature carved out a single, narrow exception: construction that constitutes "plant and machinery". This exception is the only lifeline for businesses seeking to claim ITC on any part of their own‑use construction. The legal definition of "plant and machinery" is deliberately restrictive, and the scope of this exception has been the subject of intense litigation — culminating in the Supreme Court's landmark Safari Retreats judgment and a retrospective legislative override through the Finance Act 2025. Understanding the precise contours of this exception is essential for any business that constructs its own factory, plant, or facility.

🔹 The Statutory Exception – Section 17(5)(c) and (d)

Both Section 17(5)(c) and (d) block ITC on construction "other than plant and machinery". The exact language is:

• Section 17(5)(c): Works contract services when supplied for construction of an immovable property (other than plant and machinery) on his own account.
• Section 17(5)(d): Goods or services or both received by a taxable person for construction of an immovable property (other than plant and machinery) on his own account.

The parenthetical exclusion is the only gateway through which ITC can be claimed on construction. The burden of proof that a particular structure qualifies as "plant and machinery" rests entirely on the taxpayer. The department does not have to prove it is not; the taxpayer must prove it is.

🔹 The Definition – Explanation to Section 17(5)

The Explanation to Section 17(5) provides the statutory definition of "plant and machinery". The precise text is:

This definition has several critical elements that must all be satisfied simultaneously:

1. Apparatus, equipment, or machinery: The item must be a tangible, functional piece of equipment — not a passive structure. A concrete wall is not apparatus; a turbine is.
2. Fixed to earth by foundation or structural support: The item must be permanently attached to the ground or to a structure. Movable equipment does not qualify for this exception (though it may qualify for ITC under general rules if it is a capital good).
3. Used for making outward supply of goods or services: The item must be used in the production or provision of taxable supplies. An item used solely for internal administration or employee welfare does not qualify.
4. Includes foundation and structural supports: If the apparatus itself qualifies, the civil foundation that holds it also qualifies. This is the single most important practical extension of the exception — it allows ITC on the concrete block holding a machine, even though the building floor around it is blocked.
5. Expressly excludes land, building, or any other civil structure: The building shell, its walls, roof, floors, and columns are categorically excluded, even if the building houses the machinery. The exclusion of "any other civil structure" is a catch‑all that prevents arguments that a structure is "not a building" but should still qualify.

🔹 The Retrospective Amendment – Finance Act 2025

Prior to the Finance Act 2025, Section 17(5)(d) used the phrase "plant or machinery". The use of the disjunctive "or" gave rise to an argument, accepted by some courts, that "plant" and "machinery" were separate categories. Under this interpretation, a building could qualify as "plant" if it was functionally essential for the business, even if it did not meet the narrow definition of "machinery". The Supreme Court in Safari Retreats Pvt Ltd vs. Chief Commissioner of CGST (2024) gave significant support to this interpretation, holding that a mall — which generated taxable rental income — could be considered "plant" because the building itself was the apparatus through which the taxable service (renting of commercial space) was provided.

The Finance Act 2025 reacted directly to this ruling. It amended Section 17(5)(d) retrospectively from 1 July 2017, replacing the phrase "plant or machinery" with "plant and machinery". This change has three profound consequences:

• The disjunctive argument is dead: The words are now conjunctive. The exception applies only to what is defined in the Explanation as "plant and machinery" — a combined term with a specific statutory meaning. The building itself can never be "plant and machinery" because the definition expressly excludes buildings.
• The Safari Retreats interpretation is overruled: The Supreme Court's reasoning that a mall could be "plant" is now legislatively reversed. From 1 July 2017, no building can claim the exception unless it contains specific, identifiable plant and machinery within it.
• Past ITC claims are at risk: Any business that claimed ITC on its own building construction based on the Safari Retreats ruling or the "plant or machinery" interpretation now faces potential reversal. The retrospective amendment empowers the department to demand reversal of such ITC with 18% interest and penalty under Section 73/74. Businesses must urgently review their past claims and take corrective action.

🔹 What Qualifies as "Plant and Machinery" – Practical Examples

The following are common scenarios where the exception may or may not apply. Each is fact‑dependent and requires documentation.

🔹 Evidentiary Requirements – Proving the Exception

To successfully claim ITC under the plant and machinery exception, the taxpayer must maintain robust, contemporaneous documentation. The GST officer will not accept a mere assertion. The following evidence is essential:

• Technical specification and design drawings: Engineering drawings showing that a specific civil foundation is uniquely designed for a particular machine, and that the machine cannot function without it.
• CA certification: A certificate from a Chartered Accountant identifying the civil structures that meet the statutory definition of plant and machinery, with a clear breakup of costs.
• Contractor invoices: Separate invoices from the contractor for the building shell (blocked) and for the plant and machinery foundations (available). A single composite invoice creates ambiguity.
• Project cost breakup: A detailed statement showing the cost of materials (steel, cement) allocated to the qualifying foundations versus the general building.
• Capitalisation in books: The qualifying foundations should be capitalised as "Plant and Machinery" in the fixed asset register, not as "Building". The accounts must match the GST treatment.
• Legal opinion: In complex cases, a written opinion from a GST counsel supporting the classification is advisable.

Without this documentation, even a genuine plant and machinery ITC claim may be disallowed during audit. The cost of preparing this evidence is a fraction of the cost of ITC reversal with interest and penalty.

🔹 Practical Steps After the Finance Act 2025

• Review past ITC claims: Identify any ITC claimed on own‑use building construction based on the "plant or machinery" interpretation or the Safari Retreats ruling. Quantify the exposure.
• Voluntarily reverse ineligible ITC: If past claims are now indefensible, voluntarily reverse the ITC in GSTR‑3B and pay the interest. This avoids the risk of a penalty under Section 73 (10%) or Section 74 (100%).
• Segregate future construction costs: For ongoing or future projects, instruct the contractor to issue separate invoices for general construction (blocked) and plant and machinery foundations (available).
• Strengthen documentation: For all plant and machinery claims, prepare a CA‑certified statement and retain all technical drawings and cost breakups.
• Consult a professional: Given the complexity of the law post‑amendment, obtain a professional opinion before making any ITC claim on construction.

ITC on works contract services received for construction of own immovable property is blocked under Section 17(5)(c). If a contractor provides works contract services to a client, the contractor can claim ITC on all inputs, and the client can claim ITC on the contractor's invoice — if the client is using the works contract for taxable supplies (e.g., the client is a builder selling under‑construction flats under the 18% scheme). If the client is constructing for own use, the client cannot claim ITC on the contractor's invoice. The contractor's ITC remains unaffected — the block only applies to the recipient of the works contract service for own‑use construction.

• 1

  Claiming ITC on materials and contractor invoices for construction of own office, factory, or godown

  This is the single most frequent and most expensive GST error in the construction sector. A business constructs its own office, factory shed, warehouse, or branch office — either departmentally by purchasing cement, steel, and other materials directly, or through a contractor on a works contract basis. The accounts team, seeing GST invoices for legitimate business expenditure, claims Input Tax Credit. The law, however, is unequivocal: Section 17(5)(c) and (d) of the CGST Act, 2017 block ITC on works contract services and on goods used for construction of an immovable property on one's own account. The block applies even if the building is used 100% for business purposes. The fact that the office generates taxable revenue is legally irrelevant — the block is absolute.

  Real Example: A software company with ₹50 crore annual turnover constructs its own corporate office at a cost of ₹8 crore. The contractor charges 18% GST = ₹1.44 crore on the works contract invoice. The company's accounts team, seeing a legitimate business expense, claims ITC of ₹1.44 crore in GSTR‑3B. During audit, the GST officer disallows the entire ₹1.44 crore ITC under Section 17(5)(c). The company must reverse the credit, pay 18% interest (₹25.92 lakhs per year), and a penalty of 10% (₹14.40 lakhs under Section 73) or up to 100% (₹1.44 crore under Section 74 if the officer finds wilful suppression). The total liability can exceed ₹2 crore.

  Maintain a separate cost centre for all own‑use construction. Do not claim ITC on any invoice related to that cost centre — whether for materials, contractor bills, architect fees, or any other input. If ITC has been inadvertently claimed, reverse it voluntarily in GSTR‑3B Table 4(B)(2) at the earliest. The cost of voluntary reversal with interest is a fraction of the cost of an audit‑driven demand with penalty. Segregate own‑use construction from client projects in your accounting system from day one.
• 2

  Misunderstanding the plant and machinery exception — assuming the entire factory or building qualifies

  Many manufacturers and factory owners believe that because their factory is used for producing taxable goods, the entire structure — the shed, walls, roof, floors, and internal offices — qualifies as "plant and machinery" and is eligible for ITC. This is a fundamental misreading of the law. The Explanation to Section 17(5) defines "plant and machinery" narrowly as apparatus, equipment, and machinery fixed to earth by foundation or structural support used for making outward supply, and expressly excludes land, building, or any other civil structure. The factory shed that provides weather protection is a building — it is excluded. Only specific civil foundations that are structurally and functionally integral to a qualifying machine (e.g., a turbine foundation, a boiler support structure) may qualify. The building shell never qualifies.

  Real Example: A textile manufacturer constructs a new factory at a cost of ₹20 crore — ₹14 crore for the building shell and ₹6 crore for machinery foundations. The manufacturer claims ITC on the entire ₹20 crore (GST ₹3.60 crore), arguing the whole factory is "plant". During audit, the officer disallows the ITC on the ₹14 crore building shell (GST ₹2.52 crore). The reversal demand with interest and penalty can exceed ₹4 crore. The ITC on the ₹6 crore machinery foundations is upheld because the manufacturer maintained separate engineering drawings and CA certification for those specific structures.

  Identify precisely which civil structures meet the statutory definition of plant and machinery. Obtain a CA‑certified breakup and structural engineer's drawings for each qualifying item. Claim ITC only on those specific items and their immediate foundations. The building shell, walls, roof, general flooring, offices, canteen, toilets, compound wall, and drainage are all blocked — do not claim ITC on any of them. Instruct your contractor to issue separate invoices for the building shell (blocked) and for plant and machinery foundations (available).
• 3

  Capitalising renovation or repair expenditure and still claiming ITC

  The Explanation to Section 17(5) defines "construction" to include re‑construction, renovation, additions, alterations, or repairs — but only to the extent of capitalisation in the books of accounts. If a business undertakes a major renovation, capitalises the cost in the balance sheet as an addition to the building's value, and simultaneously claims ITC on the renovation materials and contractor invoices, the ITC claim is legally invalid. The accounts and the GST returns contradict each other, and this contradiction is the first thing a GST auditor checks.

  Real Example: A hotel spends ₹80 lakhs on a major renovation — new flooring, false ceilings, upgraded bathrooms. The hotel capitalises the ₹80 lakhs in its balance sheet as "Building Improvements". Simultaneously, it claims ITC of ₹14.40 lakhs (18%) on the renovation materials. During audit, the officer cross‑verifies the financial statements with GSTR‑3B and immediately disallows the ITC. The hotel must reverse ₹14.40 lakhs with 18% interest and penalty. The accounting treatment — capitalisation — sealed the fate of the ITC claim.

  Before claiming ITC on any renovation or repair invoice, coordinate with the accounts department to confirm whether the expenditure is capitalised or debited to revenue. If capitalised, do not claim ITC — reverse it in GSTR‑3B. If the expenditure is a revenue expense (routine maintenance, minor repairs), ITC is generally available. Ensure the accounting treatment and GST treatment are aligned. If there is a mixed invoice (part capital, part revenue), request separate invoices or apportion the ITC and reverse the capitalised portion.
• 4

  Not reversing ITC on common inputs when providing both taxable and exempt supplies

  Many builders and contractors handle a mix of taxable works contracts (18% GST) and exempt pure labour contracts (residential homeowners under Notification 12/2017‑CT(R)). They purchase materials and services — cement, steel, tools, mobile phones, office rent — that are used for both types of projects. Under Rule 42 of the CGST Rules, 2017, ITC on such common inputs and input services must be proportionately reversed based on the ratio of exempt turnover to total turnover. Failing to do so results in excess ITC claims that are auto‑flagged by the GSTN system.

  Real Example: A contractor has total annual turnover of ₹1 crore — ₹60 lakhs from taxable works contracts and ₹40 lakhs from exempt pure labour. He claims ITC of ₹10 lakhs on common inputs (cement, steel, rent, telephone) without any reversal. The correct position: 40% of the common ITC (₹4 lakhs) is attributable to exempt supplies and must be reversed under Rule 42. The contractor must reverse ₹4 lakhs with 18% interest. If the department detects this during audit, a penalty of 10% (₹40,000) or more may also be imposed.

  Calculate the proportionate ITC reversal every month or quarter under Rule 42. Maintain separate project codes for taxable and exempt contracts. Reverse the attributable ITC in GSTR‑3B Table 4(B)(2). Do not wait for year‑end — monthly or quarterly reversal is mandatory under the CGST Rules.
• 5

  Claiming ITC on material invoices that do not appear in GSTR‑2B

  Under Rule 36(4) of the CGST Rules, Input Tax Credit can be claimed in GSTR‑3B only to the extent it matches with GSTR‑2B — the auto‑generated statement of eligible ITC. Builders and contractors purchase materials from multiple dealers — cement, steel, bricks, tiles, electricals — many of whom are small businesses that delay or skip filing GSTR‑1. If the contractor claims ITC on such invoices in GSTR‑3B without verifying GSTR‑2B, the excess ITC is automatically detected by the GSTN system, and a Show Cause Notice (SCN) is generated. This is one of the most common system‑generated demands and requires no human intervention by the department.

  Real Example: A builder purchases tiles from three dealers for a total of ₹8 lakhs (GST ₹1.44 lakhs). Only two dealers (₹5 lakhs, GST ₹90,000) upload their invoices in GSTR‑1. The third dealer (₹3 lakhs, GST ₹54,000) does not file. The builder claims the full ₹1.44 lakhs ITC in GSTR‑3B. GSTR‑2B shows only ₹90,000 eligible ITC. The system auto‑generates an SCN for the excess ₹54,000. The builder must reverse the ITC with 18% interest. If this happens repeatedly, the department may initiate a full audit.

  Download GSTR‑2B from the GST portal after the 14th of each month. Match every material purchase invoice line‑by‑line with GSTR‑2B. Claim only the ITC that appears in GSTR‑2B. For invoices that are missing, immediately contact the supplier and insist they file GSTR‑1. Make supplier GST compliance a contractual condition — include a clause in purchase orders that payment will be released only after the invoice appears in GSTR‑2B.
• 6

  Not reversing ITC when switching from the 18% scheme to the 1% or 5% residential schemes

  When the GST Council introduced the 1% (affordable housing) and 5% (non‑affordable residential) schemes effective 1 April 2019, builders with ongoing projects as of 31 March 2019 were given a one‑time option to switch from the old 18% ITC‑available scheme to the new no‑ITC schemes. Builders who opted for the new schemes were required to reverse the ITC availed on inputs held in stock (including semi‑finished and finished but unsold units) as of the transition date. Many builders failed to correctly calculate and reverse this transitional ITC, leading to substantial demands.

  Real Example: A builder with an ongoing residential project had availed ITC of ₹2.50 crore on materials purchased up to 31 March 2019. The builder opted for the 5% scheme. The stock of inputs, semi‑finished units, and finished unsold flats as of the transition date contained embedded ITC of ₹85 lakhs that was required to be reversed. The builder reversed only ₹30 lakhs, missing ₹55 lakhs. During a subsequent audit, the department detected the short reversal. The builder was required to reverse the balance ₹55 lakhs with 18% interest from April 2019, plus a penalty. The total demand exceeded ₹1.20 crore.

  If you have legacy projects that transitioned from the 18% scheme to the 1% or 5% scheme, immediately review the transitional ITC reversal calculations. Engage a GST professional to verify the stock valuation, the ITC embedded in that stock, and the reversal entries in GSTR‑3B. If any shortfall is discovered, voluntarily reverse the balance with interest before the department issues a notice. Maintain detailed records of the transitional calculations for audit purposes.
• 7

  Claiming ITC on motor vehicles used in construction without meeting the exceptions

  Section 17(5)(a) of the CGST Act blocks ITC on motor vehicles for transport of persons (cars, jeeps, SUVs, buses with seating capacity less than 13 persons). Builders and contractors often purchase passenger vehicles for site visits, client meetings, and staff transport and claim ITC, assuming it is a legitimate business expense. The law is clear: unless the vehicle is used for further supply of vehicles, transportation of passengers (as a business), or driving training, ITC is blocked. However, motor vehicles for transport of goods — trucks, tippers, trailers used for carrying construction materials — are not covered by this block and ITC is available.

  Real Example: A contractor purchases a Toyota Innova (₹20 lakhs + GST ₹3.60 lakhs) for site visits and claims ITC of ₹3.60 lakhs. During audit, the officer disallows the ITC under Section 17(5)(a) because the vehicle is for transport of persons. The contractor must reverse ₹3.60 lakhs with 18% interest. Had the contractor purchased a tipper truck for transporting aggregates, ITC would have been fully available.

  Do not claim ITC on passenger vehicles (cars, jeeps, SUVs) unless a specific exception under Section 17(5)(a) applies. For goods transport vehicles (trucks, tippers, trailers), ITC is available — claim it after ensuring the invoice appears in GSTR‑2B. Maintain a clear record of the purpose and usage of each vehicle. If a vehicle is used for both business and personal purposes, ITC is not available on the personal use portion.
• 8

  Not filing GSTR‑1 on time — blocking ITC for the client and damaging business relationships

  A contractor's ITC claim is only one side of the coin. The other side is the contractor's responsibility to upload invoices in GSTR‑1 on time so that the client (builder, factory owner, government department) can claim ITC. Under Rule 36(4), the client's ITC is restricted to what appears in their GSTR‑2B, which in turn depends on the contractor's GSTR‑1 filing. A contractor who delays GSTR‑1 filing may find that the client withholds payment, cancels future contracts, or demands compensation for the lost ITC. In a competitive market, a contractor with a reputation for GST non‑compliance loses business.

  Real Example: A tiling sub‑contractor completes work worth ₹15 lakhs (GST ₹2.70 lakhs) for a builder in April. The sub‑contractor delays filing GSTR‑1 until July. The builder, filing GSTR‑3B for April in May, finds the sub‑contractor's invoice missing from GSTR‑2B. The builder cannot claim ITC of ₹2.70 lakhs for April. The builder withholds the sub‑contractor's payment and demands that the sub‑contractor compensate for the lost ITC. The sub‑contractor also pays late fees for the delayed GSTR‑1.

  File GSTR‑1 by the due date — 11th of the following month (or 13th of the next quarter under QRMP) — without exception. Set calendar reminders. Even if there are no invoices in a period, file a Nil GSTR‑1. If you are on the QRMP scheme, use the Invoice Furnishing Facility (IFF) in the first two months of the quarter to upload B2B invoices so that your client can claim ITC early. Communicate proactively with clients about your filing status.

• Can ITC be claimed on construction of building? +

  No, if constructing for own use (Section 17(5)(c)/(d)). Yes, if you are a contractor building for a client as a taxable works contract.

• What is Section 17(5) under GST? +

  It blocks ITC on works contract services and goods used for construction of immovable property on own account, with the sole exception of plant and machinery.

• When is ITC blocked under GST? +

  For own‑use construction, personal consumption, motor vehicles (with exceptions), food, beverages, club memberships. Also for goods/services used for exempt supplies.

• Can ITC be claimed on commercial buildings? +

  No, if constructing for own use. A contractor building a commercial property for a client can claim ITC.

• Can ITC be claimed on construction materials like cement and steel? +

  Only by a contractor using them for taxable works contract services. For own‑use construction, ITC is blocked.

• What is the Finance Act 2025 amendment? +

  Section 17(5)(d) was amended retrospectively from 1 July 2017, replacing "plant or machinery" with "plant and machinery", narrowing the ITC exception significantly.