---
title: "HSN Code for Antibiotic Substances | HSN 29359021 GST Rate"
description: "Find HSN and GST Rates for 29359021 related to Antibiotic Substances with BUSY Accounting - The reliable source for HSN and GST details in India."
canonical: "https://busy.in/hsn/hsn-29359021/"
---

# HSN Code 29359021: Antibiotic Substances

- [Section 06: Guide to HSN Section 06](https://busy.in/hsn/section-06/)
- [Chapter 29: Organic Chemicals](https://busy.in/hsn/chapter-29/)
- [Sub-chapter 2935: Sulphonamides](https://busy.in/hsn/sub-chapter-2935/)

## GST rates

| Description | CGST | SGST | IGST | CESS |
| --- | --- | --- | --- | --- |
| Sulphonamides : Sulphamethoxypyridarine, sulphamethiazole, sulphamoxole, sulphamide: Sulphamethoxypyridarine | 9% | 9% | 18% | 0% |

## Frequently asked questions

### What products are classified under HSN 29359021 ?

It includes Antibiotic Substances

### Can we claim ITC on inputs used to trade Antibiotic Substances?

If your outward supply is taxable, eligible ITC is available subject to general restrictions. For exempt/Nil supplies, reverse credit per Rule 42.

### Do e‑way bill and e‑invoice apply for Antibiotic Substances?

e‑Way bill is needed above ₹50,000 consignment value (subject to exemptions). e‑Invoicing is turnover‑based (presently AATO > ₹5 crore) for B2B supplies.

### How much GST applies to Antibiotic Substances?

Under HSN 29359021, Antibiotic Substances attracts Varies when sold in taxable form. Describe the exact form on the invoice.

### Any common misclassification issue with Antibiotic Substances?

Use the exact HSN and describe the form/grade. For multi‑line invoices, apply the rate per line to avoid wrong tax collection.

### How should mixed supplies be billed when Antibiotic Substances is sold with other items?

Use separate invoice lines per HSN and apply the correct rate per line (e.g., Varies for Antibiotic Substances; Nil for exempt items if applicable).