How to Create a GST Invoice Online (2026 Step-by-Step Guide)

If you run a business in India, a correct GST invoice isn't optional — it's what lets your client claim input tax credit and keeps you compliant. The good news: you don't need accounting software or a designer. You can create a GST invoice online for free in just a few minutes. This guide walks you through exactly what a GST invoice needs and how to generate one.

What is a GST invoice?

A GST (Goods and Services Tax) invoice is a tax document a registered supplier issues to a buyer. It records the goods or services sold, the price, and the GST charged. A compliant tax invoice must include specific fields so your client can claim credit for the tax they paid you.

Mandatory fields on a GST invoice

• Your business name, address and GSTIN
• A unique, sequential invoice number and the invoice date
• Client name, address and GSTIN (if registered)
• Place of supply (important for deciding IGST vs CGST/SGST)
• Description of goods/services, quantity and rate
• HSN/SAC code (where applicable)
• Taxable value, GST rate and tax amount (CGST + SGST, or IGST)
• Total invoice value and an authorised signature

CGST/SGST vs IGST — which one applies?

This trips up a lot of first-time sellers. The rule is based on the place of supply:

• Intra-state (buyer in the same state as you): split the GST into CGST + SGST equally.
• Inter-state (buyer in a different state) or exports: charge a single IGST.

A good invoice tool handles this automatically once you set the place of supply — so you never have to do the maths by hand.

How to create a GST invoice online in 3 steps

Using a free online invoice generator like Envoiz, the whole process takes about a minute:

• Set up your business once — add your name, logo and GSTIN. It's reused on every invoice.
• Add the client and line items — enter descriptions, quantity and rate, pick the tax rate, and set the place of supply. CGST/SGST or IGST is calculated for you.
• Download or send — export a clean PDF, or share a link your client can view, download and pay from.

Tips for getting paid faster

• Number invoices sequentially and never skip numbers.
• Add clear payment terms and a due date.
• Send the invoice the same day the work is delivered.
• Start from an approved quotation so there are no surprises — see our quote-to-invoice workflow.

Frequently asked

Can I make a GST invoice for free? Yes — Envoiz is a free GST invoice generator. You can create and download professional tax invoices at no cost.

Do I need GST registration to invoice? You can issue a simple bill of supply without GSTIN, but to charge GST and let clients claim credit you must be GST-registered.