Find Any HSN or SAC Code Instantly

The Harmonised System of Nomenclature, or HSN, is an internationally standardised classification system for goods. Developed and maintained by the World Customs Organisation in Brussels, it is used by more than 200 countries to identify, categorise, and tax over 98% of merchandise traded across borders. India formally adopted the system in 1986 for customs and excise purposes, and integrated it into the Goods and Services Tax regime when GST was launched on 1 July 2017.

At its core, an HSN code is a six- or eight-digit numeric identifier assigned to a specific product or category of goods. The first six digits are uniform across every member country—so a code that identifies basmati rice in India identifies the same product in Singapore, Germany, or Brazil. India extends the code by two additional digits to capture finer distinctions for domestic taxation, producing the familiar eight-digit format used on Indian invoices.

For Indian businesses, the practical importance is straightforward: the code on your invoice determines the GST rate you charge. A wrong digit can mean charging 5% when the law requires 18%, triggering tax shortfalls, penalties, and disputes during audit.

The mandatory use of HSN codes on GST invoices is governed by aggregate annual turnover. Businesses with turnover up to ₹5 crore must quote at least the four-digit HSN code on B2B invoices, while those above the ₹5 crore threshold must use the full six-digit code. For exports, imports, and notified products, the eight-digit code is mandatory regardless of turnover.

Beyond compliance, accurate HSN classification matters for customs clearance, duty drawback claims, FTA preferential tariffs, e-way bill generation, and statistical reporting. A misclassified product can be held at port, delayed in transit, or denied export incentives the exporter would otherwise be entitled to.

The companion system for services is the Services Accounting Code, or SAC—a six-digit hierarchical classification developed by India's CBIC specifically for the service sector. Where HSN governs goods, SAC governs everything from construction and consultancy to information technology and education.

The single most common mistake businesses make is settling for an "approximately right" code. HSN classification is deterministic—there is one correct code for any given product, and the General Rules for the Interpretation of the Harmonised System (GIR) provide the legal method for arriving at it.

Method one: search by product name. Type the common commercial name of the product into the search bar. The tool surfaces every HSN entry whose description contains that term. Read the candidate descriptions in full, paying close attention to qualifiers—fresh versus frozen, knitted versus woven, branded versus unbranded. These distinctions almost always determine which sub-heading applies.

Method two: navigate by chapter. If you know the broad family the product belongs to—textiles, plastics, machinery, food preparations—begin at the chapter level and work downward. Professional classifiers prefer this method because it forces a systematic reading of all candidate headings within a chapter.

Method three: search by code fragment. If you have a partial code from a similar product, an old invoice, or a supplier's quotation, type those digits into the search bar. The tool returns every code beginning with that prefix, allowing you to drill from a known starting point.

Three principles save the careful classifier from common errors. First, composition matters more than function—a plastic chair is classified by its plastic, not by its purpose as furniture, in many headings. Second, form matters—the same chemical compound can sit in different chapters depending on whether it is supplied as a raw material, an intermediate, or a finished pharmaceutical. Third, specific descriptions defeat general ones—if your product is named explicitly in any sub-heading, that sub-heading prevails.

When two or more headings appear equally applicable, GIR Rule 3 sets a hierarchy: most specific description wins; failing that, the heading covering the essential character wins; only if both tests fail does the heading appearing last numerically govern. For genuinely ambiguous cases, businesses should obtain an Advance Ruling from the relevant authority rather than guess.