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GST invoice generator

HSN Codes on GST Invoices: What Sellers Need to Know

Updated 27 October 2026 · 2 min read · By the LabelCroppers team

HSN (Harmonised System of Nomenclature) codes classify goods; SAC codes classify services. GST invoices show them for each item.

The number of digits required depends on your turnover and type of supply.

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Finding your HSN

Use the HSN search on the GST portal or your product’s existing invoices from suppliers. Apparel, for example, falls in chapters 61 and 62.

How many digits

Turnover-based rules decide whether you show 4, 6 or 8 digits. Check the current notification or ask your accountant.

Examples for apparel sellers

  • Knitted garments generally fall under chapter 61.
  • Woven garments generally fall under chapter 62.
  • The exact code depends on fabric, type and who the garment is for.

Why the right HSN matters

The HSN decides the GST rate and appears in your returns. A wrong code can mean the wrong tax rate on invoices and corrections later. When unsure, ask your accountant or check how your supplier classifies the item.

Keep a list

Maintain a simple sheet of your products with their HSN and GST rate, so every invoice uses the same code for the same product.

Services

If you sell services such as photography or packing, use SAC codes, which also start with 99. The same invoice generator accepts SAC codes in the HSN column.

Adding HSN in the tool

In the GST invoice generator, enter the HSN code in each item row. It appears in the item table of the printed invoice.

Frequently asked questions

Is HSN the same as the GST rate?

No, but the rate depends on the HSN classification.

Do services use HSN?

Services use SAC codes.

Can I save HSN codes?

Your recent entries are remembered in the browser.

Do marketplace invoices use my HSN?

Marketplaces use the HSN you entered in your listing; keep it consistent.

Where does HSN appear on the invoice?

In the item table, next to each product description.

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