HSN, common parlance and the General Rules of Interpretation
When the Tariff speaks, the market is irrelevant. When the Tariff is silent, the market decides.
Where the Tariff describes an article specifically, that description governs and evidence of trade understanding is inadmissible to displace it. Where the Tariff uses a commercial term without definition, or where two headings compete, the commercial or common parlance understanding of the term is relevant and is established by evidence. The Harmonised System Explanatory Notes are a persuasive aid, not binding law.
The hierarchy of aids
The terms of the heading and the Section and Chapter Notes, which are statutory.
The General Rules of Interpretation, which are statutory and apply in sequence.
The Harmonised System Explanatory Notes, which are persuasive and are routinely relied on by the Supreme Court as a guide to the scope of a heading, but which cannot override the Tariff or the Notes.
Trade parlance evidence, which is relevant where a commercial term is used without definition.
Departmental circulars and clarifications, which bind officers and can be relied on by a taxpayer where beneficial, but which cannot enlarge or restrict the Tariff.
Proving common parlance
The evidence is what the trade and the consumer understand the product to be. It is proved by catalogues and price lists, by the licences and approvals under which the product is sold, by standards specifications, by advertising material, and by evidence from persons in the trade.
A dictionary meaning is a weak substitute and is often the only material a taxpayer brings. It rarely decides a case.
Regulatory classification under another statute — a drug licence, a food licence, a standards mark — is persuasive on how the product is understood, and it is the most readily available evidence in most files.
The end use is relevant where the Tariff makes it relevant, and irrelevant where it does not. That distinction is the source of a great many bad arguments.
The practical discipline
Quote the heading and the Notes in the reply, in full. Officers deciding classification disputes work from the notification, and a reply that reproduces the statutory text is easier to accept.
Attach the Explanatory Note extract where it helps, and address it where it does not.
Where a circular is against you, argue that it cannot enlarge the Tariff. Where it favours you, argue that it binds the officer.
Keep an eye on the customs classification of the same article on import. A different position in the two regimes is the first thing an auditor finds.
Authorities relied on
An exemption notification is construed strictly, and ambiguity is resolved against the claimant; the burden lies on the person claiming the benefit.
The functional utility and predominant use of a product, together with how it is understood in trade, are relevant in resolving competing classifications.
What to do on Monday
Reproduce the heading and the Notes in every classification reply.
Collect the regulatory approvals and standards for each disputed product; they are the best available parlance evidence.
Address the Explanatory Notes expressly, including where they are against you.
Reconcile GST and customs classification for the same article, and record the reason for any difference.
This page states the general position. A reader with a specific question on their own facts may write to the GST practice at AMLEGALS.
Write to the GST practiceQuestions we are asked on this
Are the Explanatory Notes binding?
No, but they are strongly persuasive and are regularly relied on by the courts as a guide to the scope of a heading.
Can a dictionary decide the classification?
Rarely. Trade and regulatory evidence carries far more weight.
Does end use matter?
Only where the Tariff or the Notes make it relevant, as in the sole or principal use provisions for parts.
Can a circular change the rate?
No. It can bind officers in their administration, but it cannot enlarge or restrict the Tariff.
Should the GST and customs classification match?
Yes, unless there is a reason you can state. A mismatch is an invitation to a demand in one regime.
In this cluster
- GST 2.0: two slabs did not end classification litigation, they moved the battle line
- Rate change transition: time of supply, credit notes and stock in hand
- Classification disputes under GST: the principles the courts apply
- Westinghouse Saxby: the sole or principal use test and the end of easy classification
- Composite supply versus mixed supply: the test, and the tax
- Principal supply in bundled contracts: getting the rate right
- Food, beverages and the restaurant service rate maze
- Textiles and apparel: the rate structure and the disputes it produces
- Pharmaceuticals and medical devices: the concession and its boundaries
- Automobiles and auto components: the rate bands and the component question
GST Insights is published by AMLEGALS for general information. Law stated as on 3 September 2026. Not advice on any particular set of facts; not an advertisement or a solicitation under Rule 36 of the Bar Council of India Rules. Readers with a question on their own facts may write to the GST practice of their own accord.