GST Rate on Caustic soda
The GST rate on caustic soda is 18%, under HSN code 2815 (sodium hydroxide (caustic soda)). Here is the full breakdown, a worked example, and related rates in Chemicals & Industrial.
GST rate breakdown for caustic soda
- GST rate: 18%
- Intra-state: 9% CGST + 9% SGST
- Inter-state: 18% IGST
- HSN code on the invoice: 2815
- Also covers: naoh, lye
Rates reflect the GST 2.0 structure effective 22 September 2025 (slabs 0%, 5%, 18%, 40%). Confirm the current rate on the official GST portal before invoicing.
Worked example: GST on caustic soda
- Taxable value: ₹10,000
- GST (18%): ₹1,800
- Within state: ₹900 CGST + ₹900 SGST
- To another state: ₹1,800 IGST
- Invoice total: ₹11,800
FAQs about GST on caustic soda
What is the GST rate on caustic soda?
The GST rate on caustic soda is 18%. Intra-state it is 9% CGST + 9% SGST; inter-state it is 18% IGST. Caustic soda falls under HSN code 2815.
What is the HSN code for caustic soda?
Caustic soda falls under HSN code 2815, which covers sodium hydroxide (caustic soda). Show this code on every GST tax invoice line for caustic soda.