About HSN Code 1605
HSN Code 1605 covers Crustaceans, Molluscs and Other Aquatic Invertebrates, Prepared or Preserved and attracts a GST rate of 12%. For intra-state supplies, this is split as 6% CGST + 6% SGST. For inter-state supplies, 12% IGST is charged. This code falls under the Food & Agriculture sector (Bakery, dairy, spices, cereals, seafood).
How to Use HSN Code 1605 on GST Invoices
- Include the HSN code 1605 on every GST invoice for crustaceans, molluscs and other aquatic invertebrates, prepared or preserved
- Businesses with turnover above ₹5 crore must use 6-digit HSN codes
- Turnover between ₹1.5–5 crore: 4-digit codes are sufficient
- The HSN code must match the product/service description on your invoice
- Incorrect HSN codes can lead to GST notices and ITC mismatches
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Last verified: 2026-06-26 · Source: CBIC Master Tariff