Invoice format in India: Tax invoice rules

India invoice facts

What a India tax Invoice must show

11 fields, from the sources listed below.

• Supplier name, address and GSTIN
• Consecutive invoice number, unique for the financial year
• Date of issue
• Recipient name, address and GSTIN if registered
• HSN code for goods or SAC for services
• Description, quantity and unit of goods or services
• Taxable value after discounts
• Rate and amount of CGST and SGST, or of IGST (18% or 5%)
• Place of supply with state name for inter-state supplies
• Whether tax is payable on reverse charge
• Signature or digital signature of the supplier

Sample tax invoice in INR

The tool above uses these lines. Illustrative amounts in INR, not market prices.

Worked GST example in INR

A net amount of ₹1,00,000.00 at each GST rate of India: the tax is the net amount times the rate, rounded to the currency's smallest unit.

Number, date and currency format (en-IN)

How en-IN writes amounts and dates, computed with the browser's Intl API; the invoice tool uses the same formatting.

India invoicing rules

• Rule 46 of the CGST Rules allows an invoice number of up to 16 characters using letters, digits, hyphens or slashes, and the series must be unique for each financial year.
• An intra-state sale shows CGST and SGST (or UTGST) as two equal halves of the rate, while an inter-state sale shows a single IGST line.
• Since 22 September 2025 most goods and services fall into a 5% or an 18% slab, with a 40% rate for a short list of luxury and sin goods.
• Businesses whose aggregate turnover is Rs 5 crore or less may print 4-digit HSN codes; larger businesses must print 6 digits.
• A supplier of exempt goods or services, or a business under the composition scheme, issues a bill of supply instead of a tax invoice.

E-invoicing, simplified invoices and record keeping

How to make a tax invoice for India

1. 1

   Set currency and format

   Choose INR and the en-IN format so amounts read like ₹1,234.50.

2. 2

   Title and number

   Title the document "Tax Invoice" and number it in sequence, for example IN-2026-0052.

3. 3

   Your tax ID

   Enter your GSTIN (format 27AAPFU0939F1ZV) in the seller details.

4. 4

   Add GST

   Add GST at 18%, or a reduced rate where the goods or services qualify.

5. 5

   Check and download

   Check the 11 required fields above, then download the PDF.

Sources

General information, not tax advice; checked October 2026. Rules change: confirm with the tax authority or an accountant before relying on them.