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Singapore Customs

Classifying My Products

Learn how to classify your products using Harmonised System codes.

Last updated 13 February 2026

On this page

What HS Codes Are
How Classification Works
Related tools

Understand how Harmonised System (HS) codes work and how to find the correct code for your goods.

What HS Codes Are

The HS codes are internationally harmonised at the 6-digit level (e.g., 2203.00). In Singapore, HS codes are extended to eight digits under the ASEAN Harmonised Tariff Nomenclature (AHTN), and are applied across all ASEAN Member States (e.g., 2203.00.11).

Applications of HS code

How Classification Works

Classification is the process of finding the most specific description that matches your product in the HS.

To help you get started, the following resources are available:

  1. Infographics explaining how to determine and read the HS codes in the Singapore Trade Classification, Customs and Excise Duties (STCCED)

How to determine HS code

See an example on how to determine your HS code.

How to read the HS

See an example on how to read the HS.

  1. The Guidebook on the HS Classification of Chemicals and Chemical Products provides step-by-step guidance for classifying chemicals and chemical products according to HS codes in STCCED. It includes:

    • Case studies of common chemical products

    • Frequently asked questions on chemical classification

    • Examples from STCCED to illustrate HS code application

Related tools

Use the HS/CA Product Code Checker to look up HS codes, product descriptions, and any control requirements by Competent Authorities.