GST on Works Contract and Construction Services — Rates, ITC and Compliance

Works contract services — which combine supply of goods (materials) with supply of services (labour) for construction — have a specific GST treatment in India. From cement and steel to the contractor's charges, the entire composite supply is taxed as a service. Here is the complete guide to GST on works contracts and construction services.

What is a Works Contract Under GST?

Under Section 2(119) of the CGST Act, a "works contract" means a contract for building, construction, fabrication, completion, erection, installation, fitting out, improvement, modification, repair, maintenance, renovation, alteration or commissioning of any immovable property — involving transfer of property in goods. This covers construction of buildings, roads, bridges, factories, and all types of civil works.

GST Rates on Works Contract Services

• 18% — Commercial and industrial construction, works contract for businesses and private parties
• 12% — Construction of affordable residential apartments (carpet area up to 60 sq. metres in metro cities, 90 sq. metres elsewhere; value up to ₹45 lakhs)
• 12% — Works contract services to the Central/State Government, Union Territory for construction of civil structures, historical monuments, canals, pipelines, railways
• 5% — Construction of affordable housing projects (under PMAY/CLSS — specific conditions apply)
• 18% — Maintenance, repair and renovation works (commercial and residential)

ITC Restriction on Immovable Property Construction

Section 17(5)(c) and (d) of CGST Act blocks ITC on:

• Works contract services received for construction of an immovable property (other than plant and machinery)
• Goods or services received for construction of immovable property on own account

Exception: If the immovable property is for further supply of works contract service (i.e., a contractor who sub-contracts), ITC is available on goods and services received for the sub-contracted portion.

Sub-Contractor GST Treatment

If a main contractor engages a sub-contractor for works on a government project:

• Main contractor charges 12% GST on government works
• Sub-contractor charges 12% GST to main contractor (same rate as main contract)
• Ensures no rate mismatch in the chain

GST on Flat Purchase from Builder

Flat purchase from a builder (under-construction property) attracts GST: 5% for regular residential apartments (without ITC to builder) and 1% for affordable housing (without ITC). Completed/ready-to-move properties with OC do not attract GST — only stamp duty and registration charges apply.

Conclusion

Works contract GST is complex — with multiple rates, ITC restrictions and special rules for government contracts. SPOTON's GST experts provide rate determination, ITC advisory and complete GST compliance for builders and contractors in Kerala. Contact us for expert works contract GST services.