How to Create a GST Invoice That Is Legally Compliant in India

What a Compliant GST Invoice Needs

If you run a registered business in India, every taxable supply you make must carry a GST-compliant invoice. Getting an invoice wrong can delay your input tax credit (ITC) and cause notices later.

A GST invoice must include your GSTIN and name, the buyer's name, invoice number and date, HSN code, tax rates (CGST/SGST/IGST), and the total value. The free GST invoice generator on ToolPilot builds all of this automatically.

The 10 Mandatory Fields of a GST Invoice

Per CGST Rules, make sure every invoice contains:

1. Your business name, address, and GSTIN.
2. Invoice number and date.
3. If the value is above ₹50,000, the buyer's name, address, and GSTIN (business buyers).
4. HSN code for the goods (or SAC for services).
5. Description, quantity, and unit price.
6. Total taxable value.
7. CGST and SGST rates (intra-state) or IGST rate (inter-state).
8. The tax amount in figures and words.
9. Place of supply.
10. Signature or digital representation on both original and duplicate copies.

Our GST invoice generator fills these fields for you — just enter your business details once.

CGST vs SGST vs IGST: Which One?

Use this quick rule:

• Intra-state sale (both you and buyer in the same state): charge CGST + SGST, split evenly.
• Inter-state sale (buyer in another state): charge IGST only.

An incorrect tax type is the most common reason GST returns get flagged. The generator applies the right split based on the details you enter.

How to Create a GST Invoice with ToolPilot

1. Enter your business name, GSTIN, and address.
2. Add the buyer's details.
3. Add line items with quantity, rate, and HSN.
4. The tool calculates taxable value and GST automatically.
5. Download your professionally formatted invoice.

Your invoices stay in your browser — the GST invoice generator is free and needs no sign-up.

Invoice Numbers: Get the Sequence Right

A valid GST invoice number is unique and consecutive for each financial year. Start at something like INV-001, and never reuse a number. If you cancel an invoice, keep the record with the cancellation note — GST law expects you to maintain a complete register.

Frequently Asked Questions

• Do I need a GST invoice for every sale? If you are registered under GST, yes, for taxable supplies. For specific cases like exports, additional rules apply.
• Can this tool create an invoice for interstate sales? Yes — it supports both intra-state (CGST+SGST) and inter-state (IGST) calculations.
• Is my business data saved anywhere? No, everything is entered and generated locally in your browser.

Create clean, legally formatted invoices with the free GST invoice generator.