Tamil Nadu GST Calculator 2025
Calculate CGST, SGST, and IGST for transactions in Tamil Nadu. Registration threshold: ₹20 Lakhs.
Calculate GST for Tamil Nadu
Enter your transaction amount and GST rate to instantly calculate CGST, SGST (for intra-state) or IGST (for inter-state transactions).
Open Tamil Nadu GST CalculatorGST in Tamil Nadu — Complete Guide
The Goods and Services Tax (GST) in Tamil Nadu follows India's unified indirect tax system implemented on July 1, 2017. Tamil Nadu (TN) has a GST registration threshold of ₹20 Lakhs annual turnover.
GST Structure in Tamil Nadu
When you make a sale within Tamil Nadu (intra-state), the GST is split equally between CGST (Central GST) and SGST (Tamil Nadu State GST). For example, on an 18% GST item:
- CGST: 9% goes to the Central Government
- SGST: 9% goes to Tamil Nadu State Government
For inter-state sales (from Tamil Nadu to another state), IGST (Integrated GST) of 18% is charged instead, which is later distributed between central and destination state governments.
GST Rates Applicable in Tamil Nadu
- 0% (Exempt): Essential items like fresh food, healthcare services
- 5%: Basic necessities, economy hotel stays, transport
- 12%: Standard goods, processed food, business class travel
- 18%: Most services, electronics, standard goods
- 28%: Luxury items, automobiles, tobacco
Tamil Nadu GST Registration Requirements
Businesses in Tamil Nadu must register for GST if:
- Annual turnover exceeds ₹20 Lakhs
- Making inter-state taxable supplies
- Selling through e-commerce platforms
- Input service distributors