A tax invoice is generally issued to charge the tax and pass on the input tax credit. A GST Invoice must have the following mandatory fields:

1. Invoice number and date
2. Customer name
3. Shipping and billing address
4. Customer and taxpayer’s GSTIN (if registered)**
5. Place of supply
6. HSN code/ SAC code
7. Item details i.e. description, quantity (number), unit (metre, kg etc.), total value
8. Taxable value and discounts
9. Rate and amount of taxes i.e. CGST/ SGST/ IGST
10. Whether GST is payable on reverse charge basis
11. Signature of the supplier

**If the recipient is not registered AND the value is more than Rs. 50,000 then the invoice should carry:
i. name and address of the recipient,
ii. address of delivery,
iii. state name and state code