GST Rates and HSN Code for Fish Excluding Edible Fish Offal (0303-91 to 0303-99): FY 2025-26 Guide

India's marine products export reached ₹57,586 crore in FY 2023-24, with GST classification errors causing 27% of refund delays. Correct HSN coding isn't optional—it's fundamental to your supply chain's financial health.

Understanding the HSN Framework for Marine Products

The Harmonized System of Nomenclature (HSN) classifies goods for taxation globally. Chapter 3 covers "Fish and crustaceans, molluscs and other aquatic invertebrates." The specific entry "Fish, frozen, excluding fish fillets and other fish meat of heading 0304" falls under HSN 0303.

Sub-headings 0303-91 to 0303-99 specifically address "Fish, frozen, excluding edible fish offal." This classification excludes edible offal (like livers, roes, and milt) which have separate HSN codes under 0302-91 to 0302-99.

Expert Insight: "Misclassification between 0302 and 0303 codes leads to the highest number of GST notices in the fisheries sector. The key differentiator is the processing state—fresh/chilled versus frozen—not just the species." - Former CBIC Classification Committee Member

Detailed GST Rate Structure for Fish Products

Primary Classification: HSN 0303

Contrasting Rates for Processed Fish Products

While raw/frozen fish attracts nil GST, processed products have different rates:

• Fish fillets (HSN 0304): 0% if fresh/chilled/frozen; 5% if processed
• Prepared fish (HSN 1604): 5% GST for canned, cooked, or preserved
• Fish meal (HSN 2301): 5% GST for animal feed purposes
• Fish oil (HSN 1504): 12% GST unless specifically exempted

Compliance Requirements for Fish Traders

Invoice Documentation

Your tax invoices must contain:

• Complete 8-digit HSN code (e.g., 0303-9410 for frozen sardines)
• Description matching Customs tariff classification
• Quantity in kilograms with scientific species name
• Declaration of fishing zone (EEZ, territorial waters, or imported)

E-way Bill Requirements

Generate e-way bills for consignments exceeding ₹50,000 in value. For fish products, the bill must specify:

• HSN code at 6-digit level
• "Perishable" category designation
• Temperature control requirements if applicable

Export Procedures

Fish exports are zero-rated under GST. You can claim refund of input tax credit (ITC) through:

• Shipping bill filing with ICEGATE
• RFD-01 application for refund
• Letter of Undertaking (LUT) for export without tax payment

Common Classification Disputes and Resolutions

Fresh vs. Frozen Determination

The CBIC clarifies that "frozen" means subjected to freezing to -18°C or below. Products stored at higher temperatures (-5°C to 0°C) may incorrectly be classified under 0303 instead of 0302.

Edible Offal Exclusion Challenge

Many taxpayers mistakenly include fish heads, tails, and maws under 0303. These items specifically fall under 0302-91 to 0302-99 when edible, attracting 0% GST but requiring separate classification.

Worked Example: Frozen Mackerel Export

Scenario: You export 10,000 kg of frozen Indian mackerel (Rastrelliger kanagurta) to Japan.

• HSN Code: 0303-9510 (Frozen mackerel)
• GST Rate: 0%
• Export Documentation: Shipping bill, LUT, commercial invoice
• ITC Refund: Claim input taxes on packaging, transportation, cold storage

Reverse Charge Mechanism (RCM) Applications

When purchasing from unregistered suppliers (small fishermen), you must pay GST under RCM:

• Rate: 0% for fish falling under 0303-91 to 0303-99
• Documentation: Self-invoice under Section 31(3)(f) of CGST Act
• Reporting: Table 4B of GSTR-3B

State-Specific Considerations

Marine States (Gujarat, Kerala, Tamil Nadu)

Check respective state GST notifications for additional exemptions:

• Gujarat: Exemption for fish sold through designated market yards
• Kerala: Special provisions for traditional fishing vessels
• Tamil Nadu: Reduced compliance for small-scale processors

Landlocked States

Fish transported to landlocked states may attract additional requirements:

• Health certificates from source state
• Phytosanitary certificates for interstate movement
• Compliance with Food Safety and Standards Authority of India (FSSAI) regulations

Penalties for Misclassification

Incorrect HSN coding leads to:

• Demand notices under Section 73/74 of CGST Act
• Penalty: 10% of tax due (minimum ₹10,000)
• Interest: 18% per annum from due date
• Prosecution: For evasion exceeding ₹5 crore (Section 132)

Advance Ruling Mechanism

For classification uncertainties, apply for advance ruling under Section 97:

• Authority: respective state AAR (Authority for Advance Ruling)
• Fee: ₹10,000 for normal application
• Timeline: 90 days for decision
• Binding effect: On applicant and department

Integration with Other Compliance Areas

Your fish business compliance intersects with multiple regulations:

• Companies Act 2013: If operating as private limited company
• FSSAI License: Mandatory for food business operators
• Marine Products Export Development Authority (MPEDA) registration: For exporters
• Customs Act 1962: For import-export documentation

Consider reading our guide on India business compliance checklist for holistic understanding.

Technological Solutions for HSN Compliance

Implement GST-compliant accounting software that:

• Auto-populates HSN codes based on product description
• Validates codes against latest CBIC notifications
• Generates HSN-wise summary in GSTR-1
• Tracks changes in classification rulings

Our platform DigiLawyer offers integrated HSN validation for marine product businesses.

Recent Legal Developments (FY 2025-26)

CBIC Circular 12/2025

Clarifies that fish thawed for quality inspection and refrozen remains classified under HSN 0303, provided core temperature doesn't exceed -18°C during process.

Appellate Authority Ruling (AAAR Kerala)

Confirmed that fish marinated but not cooked remains under Chapter 3, not Chapter 16, attracting 0% GST if frozen.

Budget 2025 Changes

No alteration to GST rates for fish products, but enhanced export incentives under MEIS scheme.

Practical Compliance Checklist

• Verify HSN code with Customs tariff database
• Maintain species-wise inventory records
• Train staff on classification differences between chapters
• Implement regular HSN code audits
• Monitor CBIC notifications for changes
• Use correct descriptions in export documents
• Reconcile GSTR-2B with purchase classifications

For businesses expanding beyond fisheries, our guide on starting a business in India covers broader compliance aspects.

Export Incentives and Duty Drawbacks

Beyond GST, fish exporters can claim:

• Duty Drawback: Rates notified by DGFT (currently 2-3% for frozen fish)
• RoDTEP Scheme: 0.5-1.5% of FOB value
• IGST Exemption: On inputs used in export production

Ensure proper documentation by following our GST compliance guide for invoice management.

Special Cases and Exceptions

Aquaculture vs. Marine Catch

Farm-raised fish follows same HSN classification but may have different input tax credit eligibility due to feed and equipment GST.

By-Products Utilization

Fish waste unfit for human consumption (HSN 2301) attracts 5% GST if used for animal feed, but may be exempt under specific notifications.

Organic Certification

Organically certified fish has no different GST treatment but may qualify for additional export benefits.

Record Keeping Requirements

Maintain for six years:

• Purchase invoices from fishermen/auctions
• Cold storage records with temperature logs
• Transportation documents with e-way bill numbers
• Export shipping bills and bank realization certificates
• GST returns and refund applications

For companies with complex structures, understand compliance through our inter-corporate loans guide.

Frequently Asked Questions

What constitutes "edible fish offal" for exclusion purposes?

Edible offal includes livers, roes, milt, fins, heads, tails, and maws specifically classified under HSN 0302-91 to 0302-99. The exclusion in 0303-91 to 0303-99 means these items must be classified separately if present.

How does GST treatment differ for freshwater vs. marine fish?

No difference in GST rates or HSN classification based on habitat. Both freshwater and marine fish fall under same HSN codes based on processing state (fresh, chilled, frozen) and form (whole, filleted, etc.).

Are there any GST exemptions for small fish vendors?

Fish vendors with turnover below ₹40 lakh (₹20 lakh for special category states) can opt for composition scheme, but cannot claim input tax credit. Regular registration is recommended for businesses dealing in exports or interstate supplies.

What documentation proves correct HSN classification during audit?

Maintain: (1) Customs advance ruling if obtained, (2) Supplier invoices with HSN codes, (3) Scientific classification certificates from marine biologists if dealing in rare species, (4) CBIC circulars supporting your classification.

How are fish exports treated under GST?

Exports are zero-rated, meaning no GST on output and refund of all input GST. You must file shipping bills, maintain LUT, and comply with RBI realization norms within 9 months to avoid conversion to domestic supply.

Can we change HSN classification if we discover errors in past returns?

Yes, through voluntary disclosure in GST RFD-01 for refund cases or DRC-03 for tax payment cases. Interest at 18% applies from original due date, but penalties may be waived under Section 73 for voluntary compliance.

Where can I find the official HSN code list for fish products?

Refer to CBIC's Customs Tariff Act 1975, specifically Chapter 3, available on cbic.gov.in. The DGFT's ITC(HS) classification also aligns with HSN for export-import purposes.

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Disclaimer

This article is for educational purposes only and does not constitute professional legal, tax, or financial advice. Consult a qualified professional for specific advice.