GST on Construction Contractor — Rates, ITC & Sub-contractor Rules

GST rates for construction contractors: Works contract for immovable property (SAC 9954): Standard rate: 18% GST for commercial construction contracts. Affordable housing: 1% GST (no ITC) — for EWS/LIG/MIG units meeting specified criteria. Non-affordable residential: 5% GST (no ITC). Government works contracts: 12% GST (for railways, bridges, roads, canals — civil structures of government). Pure labour contracts: 0% GST for services related to construction of single residential unit (not part of project). Composite supply (goods + services for construction): classified as works contract if one party is constructing for another. Key distinction: contractor builds for developer/buyer = works contract GST applies. In-house construction (owner builds own property): not a supply, no GST. Sub-contractor: same rates as main contractor. Output GST for sub-contractor: same as main contractor, ITC available from supplier inputs.

ITC for construction contractors: Blocked credits (Section 17(5)): Works on immovable property where contractor is building for someone else: INPUT MATERIALS (cement, steel, bricks): ITC BLOCKED when contractor is building on behalf of client and immovable property is the output. Exception: contractors providing works contract SERVICE (not the property owner) CAN claim ITC on inputs used in works contract services. Practical rule: if you're a works contractor providing construction services (SAC 9954) at 18% GST — you CAN claim ITC on: cement, steel, scaffolding, tools, equipment. If you're a developer building on your own land for sale: ITC is blocked under Section 17(5)(d). ITC available to contractors on: Plant and machinery purchases. Services received (architect, legal). Capital goods used in construction services. Vehicles used for transporting construction materials (exception: commercial vehicles). Avoid: claiming ITC on white goods, furniture for projects — blocked.

Sub-contractor GST treatment: Sub-contractor charges GST to main contractor on services rendered. Rate: same works contract rate applicable to the project. If main contractor charges 12% for government project — sub-contractor also charges 12%. If main contractor charges 5% for residential project — sub-contractor charges 12% (standard rate unless specifically exempted). Exception: Pure labour sub-contract for single residential unit: exempted from GST (Notification 12/2017). Documentation: sub-contractor must issue GST invoice to main contractor. Main contractor claims ITC on sub-contractor GST. Main contractor charges output GST to client. Net GST = output GST − ITC from sub-contractors and material suppliers. TDS on sub-contractor payment: Section 194C — 1% TDS for individual/HUF, 2% for others. GST-registered sub-contractors: TDS on base amount excluding GST (if GST shown separately). If sub-contractor crosses ₹40L turnover (₹20L for services): mandatory GST registration.

Repair and renovation GST rates: Repair of immovable property (buildings, roads, bridges): 18% GST (works contract SAC 9954). Interior decoration and renovation: 18% GST. Maintenance and repair services: 18% GST. Annual maintenance contracts (AMC): 18% GST. Painting services: 18% GST (if with supply of paint and labour = works contract). Plumbing/electrical repair: 18% GST (SAC 9954). Renovation of affordable housing: 18% GST (5% only applies to original construction, not renovation). Renovation of old buildings for government: 12% GST. Civil maintenance for railways/government: 12% GST. Distinction from new construction: new construction for residential = 5% or 1%. Renovation/repair = 18% irrespective of residential/commercial. ITC for renovators: contractors providing 18% renovation services CAN claim ITC on materials. Property owner getting renovation done: ITC blocked (Section 17(5)(d)).

GST compliance for construction contractors: Registration: mandatory if annual turnover > ₹40L (goods) or ₹20L (services). Most contractors dealing with goods (materials + labour) register at ₹40L. Monthly/quarterly GSTR-1: report all outward supplies (invoices raised on clients). GSTR-3B: monthly tax payment; claim ITC on inputs. Composition scheme: NOT available for works contract/construction services. Must file regular GST returns. TDS from clients: clients paying >₹2.5L to contractor must deduct 2% TDS under Section 51 (if notified category). Government departments: always deduct 2% TDS on contractor payments. Non-government clients: GST TDS if applicable. Reverse charge (RCM): contractor pays RCM on security services, sponsorship, legal services received. GST audit: if turnover >₹5Cr, file GSTR-9C (annual return with reconciliation). Advance receipts: pay GST on advances in month received; issue receipt voucher (not tax invoice).