GST calculator for construction works contracts
Work out the GST (Goods & Services Tax) on a construction works contract — enter the value, pick the rate, optionally split material and labour, and see the tax and total payable update live.
Result
- Contract value
- ₹1,00,000.00
- GST
- ₹18,000.00
- Total payable (incl. GST)
- ₹1,18,000.00
| Component | Base | Rate | GST |
|---|---|---|---|
| GST on contract value | ₹1,00,000.00 | 18% | ₹18,000.00 |
Effective gst rate 18%
About the GST calculator
- What GST rate applies to a construction works contract?
- Most construction works contracts attract 18% GST. Specified works such as certain government, infrastructure or affordable-housing projects can fall under 12%, and concessional affordable-housing supply can be 5%. The right slab depends on the nature of the contract and the recipient — confirm with your tax advisor.
- Should I split material and labour for GST?
- A composite works contract is taxed as a supply of services at a single rate, so a split is usually for your own internal costing rather than the GST charge. This tool offers a split mode so you can model situations where distinct supplies are billed separately — but for a true composite works contract use the single-rate mode.
- Is the GST figure here final?
- No. It is an indicative estimate to help you budget and cross-check invoices. Input-tax credit, reverse charge, the precise slab and your registration status all affect the real liability. Always verify with a qualified GST practitioner before filing or invoicing.
Disclaimer: This calculator provides indicative figures only and does not constitute tax advice. GST treatment of construction work depends on the specifics of your contract and jurisdiction. Always confirm with a qualified tax professional before invoicing or filing.