About HSN Code 511991

HSN Code 511991 covers Silkworm pupae and attracts a GST rate of 5%. For intra-state supplies, this is split as 2.5% CGST + 2.5% SGST. For inter-state supplies, 5% IGST is charged. This code falls under the Textiles & Leather sector (Garments, fabric, leather goods).

How to Use HSN Code 511991 on GST Invoices

• Include the HSN code 511991 on every GST invoice for silkworm pupae
• 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

Related HSN Codes

• 5119110 — PRODUCTS OF ANIMAL ORIGIN, NOT ELSEWHERE SPECIFIED OR INCLUDED~Animal products not elsewhere specified or included; dead animals of chapter 1 or 3, unfit for human consumption~Products of fish or crustaceans, molluscs or other aquatic invertebrates; dead animals of Chapter 3 :~Fish nails
• 511992 — Sinews and tendons
• 511999 — Other

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Last verified: 2026-06-26 · Source: CBIC Master Tariff