Tutorial12 min readJul 10, 2026

Complete GST Billing Guide for Small Businesses in India

Everything you need to know about GST invoicing, tax calculations, CGST, SGST, IGST, and compliance for Indian small businesses.

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    What is GST?

    Goods and Services Tax (GST) is India's unified indirect tax system introduced on July 1, 2017. It replaced multiple taxes like VAT, Service Tax, and Excise Duty with a single tax structure.

    Types of GST

    CGST (Central GST)

    Collected by the Central Government on intra-state transactions (within the same state).

    SGST (State GST)

    Collected by the State Government on intra-state transactions. CGST and SGST are always equal.

    IGST (Integrated GST)

    Collected by the Central Government on inter-state transactions (between different states).

    GST Invoice Requirements

    A valid GST invoice must include:

  • **Invoice Number** — Unique, sequential number
  • **Invoice Date** — Date of supply
  • **Supplier Details** — Name, address, GSTIN
  • 4. **Buyer Details** — Name, address, GSTIN (if registered)

    5. **HSN/SAC Code** — For goods/services

    6. **Description** — Item name, quantity, unit

    7. **Taxable Value** — Amount before tax

    8. **GST Rate** — 0%, 5%, 12%, 18%, or 28%

    9. **CGST/SGST or IGST Amount** — Tax amount

    10. **Total Amount** — Including tax

    GST Rates in India

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    How to Create a GST Invoice with Biz by Sanvexo

  • Go to **Sales → New Invoice**
  • Select customer (or add new)
  • Add products with HSN codes
  • 4. GST is calculated automatically

    5. Preview and print/share via WhatsApp

    GST Filing Requirements

  • GSTR-1:: Monthly/quarterly return for outward supplies
  • GSTR-3B:: Monthly summary return
  • Annual Return:: GSTR-9 for businesses above ₹2 crore turnover
  • Biz by Sanvexo generates all these reports automatically, making GST filing simple.

GSTInvoicingTax

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