What is an HSN code
HSN stands for Harmonized System of Nomenclature, an internationally accepted system for classifying goods. Under GST, HSN codes are used to identify products and apply the correct tax rate. Services use a similar classification called SAC.
Why the correct code matters
Your HSN code determines the GST rate on your product. Using the wrong code can mean charging the wrong rate, which can lead to penalties, notices and disputes — especially after rate changes when classifications must be reviewed. Getting it right protects you and your customers.
How many digits do you need
The number of HSN digits you must mention on invoices depends on your turnover and transaction type. Larger businesses generally report more digits. The key is to use the level of detail required for your category and to be consistent.
How to find your HSN code
- Identify exactly what your product is and its material/use
- Search the official GST HSN lookup or rate finder
- Match your product to the closest correct classification
- Confirm the applicable GST rate for that code
- Apply it consistently across invoices
Review after rate changes
Whenever GST rates are revised, product classifications and their rate mappings should be reviewed. An HSN code that mapped to one rate before a change may now attract a different rate, so a periodic check keeps your invoicing correct.
How Aidwish helps
Aidwish helps you classify your products with the correct HSN codes and apply the right GST rates, keeping your invoicing accurate and compliant.
Note: Tax and compliance rules change through government notifications and Budgets. Verify the current figures or consult a professional before acting. Aidwish can help you stay updated and compliant.