GST Classification and HSN/SAC Advisory

HSN and SAC classification is the single decision that fixes your GST rate, your output liability, your customers' input tax credit eligibility, and your exposure to demand notices under Sections 73, 74, and 74A of the CGST Act. Get the code wrong and the consequences compound year over year. After the GST 2.0 reform of 22 September 2025, when 99% of the old 12% items moved to 5% and around 90% of the old 28% items moved to 18% with a new 40% tier for sin and luxury goods, hundreds of HSN entries shifted overnight.

Patron Accounting LLP issues written HSN and SAC classification opinions backed by the General Rules of Interpretation (GRI) under the Customs Tariff Act 1975, HSN Explanatory Notes, CBIC circulars, advance rulings, and judicial precedent from Customs, Excise, and GST tribunals. The opinion travels with you - into invoices, GSTR-1 disclosures, departmental representations, Advance Ruling Authority (AAR) applications under Section 97 CGST, and Goods and Services Tax Appellate Tribunal (GSTAT) proceedings.

Content is reviewed quarterly for accuracy.

A classification opinion is recommended whenever the rate, the heading, or the ITC consequence is materially uncertain. The following categories most often need a written opinion:

• Manufacturers introducing new SKUs, composite goods, or kits where two or more HSN headings could apply
• Traders dealing in goods that fall between two GST 2.0 slabs (5% vs 18%, or 18% vs 40%)
• Service providers in mixed supply situations (e.g., construction-with-materials, software-plus-implementation)
• Ecommerce operators receiving conflicting HSN inputs from vendors leading to GSTR-1 Table 12 mismatches
• Exporters needing 8-digit HSN for shipping bills, IGCR Rules 2022 compliance, and refund processing
• Businesses with turnover above INR 5 crore in the preceding FY (6-digit HSN mandatory under Notification 78/2020-CT)
• Businesses with turnover up to INR 5 crore (4-digit HSN mandatory on B2B invoices under Notification 78/2020-CT)
• Any taxpayer who has received a departmental query, ASMT-10 scrutiny notice, or DRC-01A intimation alleging misclassification

Statutory deadline: If a demand notice is issued, the reply timeline depends on the section. A Section 73 SCN requires a reply within 30 days; a Section 74 SCN under a fraud allegation allows up to 60 days. Voluntary payment under Section 73(5) before the SCN waives penalty entirely. Acting before the notice is always cheaper.

Have these inputs ready for an efficient classification opinion:

• Product brochure or technical datasheet
• Sample tax invoice (current HSN / SAC and rate used)
• Bill of materials and process flow (for manufacturers)
• Customer purchase order or contract (especially for composite supply)
• Past departmental correspondence (ASMT-10, DRC-01A, DRC-01 if any)
• Any prior AAR ruling obtained by the company or its group
• GSTR-1 Table 12 summary for the last 12 months
• Import / export documentation (Bill of Entry, Shipping Bill) if applicable

All fees and charges listed are indicative only and do not constitute a binding offer. Final amounts may vary depending on the volume of work and the complexity involved.

Professional service charges for drafting, filing, and representation are separate from the statutory fees. The exact fee depends on the complexity of the case, disputed amount, and number of hearings required. Contact us for a detailed quote.

Get a free HSN/SAC Classification Advisory consultation - Call +91 945 945 6700 or WhatsApp us. No-obligation assessment.

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Trusted by leading brands - Hyundai, Asian Paints, Bridgestone - and growing SMEs across manufacturing, ecommerce, restaurants, and IT services.

Outcome proof: A Pune-based FMCG client facing a Section 74 SCN of INR 1.4 crore on alleged copper-article misclassification resolved the matter at the Commissioner Appeals stage with our GRI-backed opinion - the demand dropped to interest only, with zero penalty.

With offices in Pune, Mumbai, Delhi, and Gurugram, Patron Accounting serves businesses across India - both in-person and remotely. See our GST audit support in Mumbai for local assistance.

• GST Services - the complete GST services hub covering registration, returns, ITC, refunds, notices and audits.
• GST Audit - statutory and management GST audit, including HSN review across the item master.
• GST Notice Reply - ASMT-10, DRC-01A, and DRC-01 representation, including classification disputes.
• GSTAT Advance Ruling Appeal - appeal an adverse AAR ruling to the Appellate Authority and beyond.
• GSTAT Appeal Filing - Section 112 appeals to the Goods and Services Tax Appellate Tribunal.
• GSTAT Pre-Deposit Calculation - the statutory 10% / 20% pre-deposit math before appeal.
• GST Registration - new GST registration, including HSN selection at the outset.
• GST Returns - monthly GSTR-1 / GSTR-3B filing with correct Table 12 HSN disclosure.

Every threshold, rate, and penalty in a Patron opinion is cross-referenced to its source - a CGST Act section number, a CBIC notification number, or a rate schedule entry. No unattributed claims.

Authoritative references: CBIC HSN/SAC Search, Notification 78/2020-Central Tax, and India Code - Customs Tariff Act 1975 (GRI).

Interest at 18% per annum runs from the original due date. A multi-year misclassification on a single SKU can convert into a seven-figure demand by the time the SCN arrives.

Voluntary disclosure under Section 73(5) before an SCN means no penalty. The cost of getting it right - starting from INR 9,999 - is a small fraction of the downside.

After the GST 2.0 reform of 22 September 2025, a fresh classification review is not optional for any business with meaningful tax exposure. A defensible opinion today protects every invoice issued tomorrow.

HSN and SAC classification is a high-leverage tax decision: the right code unlocks the correct rate, clean ITC, and audit comfort; the wrong code unlocks compounding demand, departmental scrutiny, and tribunal exposure. After the GST 2.0 reform of 22 September 2025, a fresh classification review is not optional for any business with meaningful tax exposure.

Patron Accounting LLP, with CA and CS professionals practising for 15+ years across Pune, Mumbai, Delhi, and Gurugram, issues GRI-backed written opinions, files Section 97 advance ruling applications, and represents taxpayers from departmental scrutiny through GSTAT and writ jurisdiction. A defensible opinion today protects every invoice issued tomorrow.

Pair this with our GST Audit for an item-master HSN review, GST Notice Reply for classification disputes, and GSTAT Advance Ruling Appeal on escalation.