Under Goods and Services Tax (GST), a works contract is treated as a supply of services, even though it involves both materials and labour. This means the entire contract value is taxed as one service, rather than splitting goods and labour separately.
Construction businesses must apply GST on the total contract amount and ensure the transaction complies with the provisions of the Central Goods and Services Tax (CGST) Act.
How does GST define a works contract?
Section 2(119) of the CGST Act defines a works contract as an agreement for building, construction, fabrication or repair specifically of immovable property. This definition is narrower than pre-GST laws because it excludes any work on movable goods. A contract to install a central air conditioning plant in a building is a works contract, whereas repairing a standalone window unit is a standard composite supply of goods and services.
The immovable property criterion is the determining factor. Where a contract involves both goods and services but relates to immovable property, it is classified as a works contract rather than a mixed supply.
Statutory clarity under Schedule II of the CGST Act confirms that these activities constitute a supply of services. The classification removes the previous ambiguity over the applicable tax between Value Added Tax (VAT) and Service Tax on different portions of the bill. Contractors now issue a single tax invoice for the total value.
Pure labour contracts relating to immovable property are treated as independent service supplies and are not works contracts unless they involve the transfer of property in goods. Classification must therefore be determined at the contract level.
What are the GST rates for works contracts, and how does land abatement apply?
Tax rates in the construction sector depend on the end-use of the property and the entity receiving the service. The GST Council has notified specific brackets to balance revenue with housing affordability.
|
Project Category |
GST Rate (With ITC) |
GST Rate (Without ITC) |
|
Affordable residential housing |
Not applicable |
1% |
|
Other residential projects |
Not applicable |
5% |
|
Commercial constructions |
18% |
Not applicable |
|
Government infrastructure |
18% |
Not applicable |
For under-construction properties that are meant for sale, GST is not charged on the full agreement value. The law assumes that one-third of the total price relates to the value of land. This portion is deducted before GST is calculated. Tax is applied only on the remaining two-thirds of the value.
However, this deduction does not apply when a contractor is hired only to carry out construction on land that already belongs to the client. In such cases, GST is charged on the full construction value.
How are the time and place of supply determined for construction projects?
In construction projects, GST becomes payable based on the time of supply rules for services. For normal works contract services, GST is payable based on the invoice issued within the prescribed time limit under Section 31 of the CGST Act. Tax is due on the earlier of the invoice date or the date of payment, only in cases involving associated enterprises or specific notified categories.
If the invoice is not issued within 30 days from completion of a milestone, GST becomes payable on the date the service is completed.
The place of supply is linked to the location of the immovable property. In simple terms, GST is charged based on where the project site is located. For example, if a contractor from Haryana undertakes a project in Uttar Pradesh, the place of supply is Uttar Pradesh. This determines whether Integrated GST (IGST) or Central GST (CGST) and State GST (SGST) will apply.
Contractors must ensure they are registered in the state where the project is executed. For interstate works contracts, registration in the state of the project site is a mandatory compliance requirement under Section 22, read with Section 24 of the CGST Act.
Who can claim Input Tax Credit in works contract transactions?
Input Tax Credit (ITC) plays an important role in managing construction costs. However, the GST law restricts credit in certain situations.
Under Section 17(5)(c) of the CGST Act, ITC is not allowed on works contract services used for building immovable property for one’s own use. For example, a company cannot claim credit on GST paid for constructing its own office or warehouse.
There is an exception for plant and machinery. Credit is allowed on foundations and structural supports that are directly connected to industrial machinery.
Residential developers who opt for the concessional GST rates of 1% or 5% are not allowed to claim ITC. The 80% procurement requirement applies specifically to promoters of residential real estate projects covered under the relevant rate notifications. Such promoters must purchase at least 80% of their inputs and input services from registered suppliers. If they fall short of this requirement, they must pay tax on the shortfall under the Reverse Charge Mechanism (RCM) at 18%, regardless of the concessional rate applicable to the project itself.
In addition, cement purchased from an unregistered supplier is always taxed under RCM at the applicable rate, regardless of the 80% rule.
Subcontractors can claim ITC on their purchases because they supply works contract services further to the main contractor. This helps avoid multiple layers of tax within the same project chain.
Conclusion
The construction sector operates under specific classification rules and restricted ITC eligibility. Contractors must apply the correct GST rates for residential and commercial projects, determine the time and place of supply accurately, and maintain milestone-based records to support ongoing compliance.
Managing construction projects through manual records can make milestone billing and tax calculation complicated. TallyPrime gives you the tools to manage GST on works contracts without the manual effort.
