---
title: "HSN Code for Guanidine methylphosphonate | HSN 29313800 GST Rate"
description: "Find HSN and GST Rates for 29313800 related to Guanidine methylphosphonate with BUSY Accounting - The reliable source for HSN and GST details in India."
canonical: "https://busy.in/hsn/hsn-29313800/"
---

# HSN Code 29313800: Guanidine methylphosphonate

- [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 2931: Other organo-inorganic compounds](https://busy.in/hsn/sub-chapter-2931/)

## GST rates

| Description | CGST | SGST | IGST | CESS |
| --- | --- | --- | --- | --- |
| Salt of methylphosphonic acid and (aminoiminomethyl)urea (1 1) | 9% | 9% | 18% | 0% |

## Frequently asked questions

### What products are classified under HSN 29313800 ?

It includes Sulphonamides: Sulphamethoxypyridarine

### Any common misclassification issue with Guanidine methylphosphonate?

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

### Can we claim ITC on inputs used to trade Guanidine methylphosphonate?

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

### How much GST applies to Guanidine methylphosphonate?

Under HSN 29313800, Guanidine methylphosphonate attracts Varies when sold in taxable form. Describe the exact form on the invoice.

### Does packaging or labelling change the GST for Guanidine methylphosphonate?

For food/agri items, GST can be 5% when not fresh/chilled and sold as pre‑packaged & labelled; otherwise often Nil. For non‑food items, rates depend on the specific sub‑heading.

### How should mixed supplies be billed when Guanidine methylphosphonate is sold with other items?

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

### Do e‑way bill and e‑invoice apply for Guanidine methylphosphonate?

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.