GST Invoice Template

What this GST invoice template includes

A GST tax invoice has to carry more than a normal bill. Beyond your business header and an itemised table, it must identify both parties by GSTIN, classify each line with an HSN or SAC code, and show the tax broken out correctly based on where the supply takes place. This template lays out every mandatory field so a registered buyer can claim input tax credit without chasing you for corrections.

Mandatory fields on a GST tax invoice

• Supplier name, address, and GSTIN
• A consecutive, unique invoice number and the invoice date
• Recipient name, address, and GSTIN (where the buyer is registered)
• Place of supply, and the state code for inter-state transactions
• HSN code for goods or SAC code for services, per line item
• Taxable value of each item after any discount
• Rate and amount of CGST + SGST, or IGST for inter-state supply
• Whether tax is payable on a reverse-charge basis
• Signature or digital signature of the supplier

Intra-state versus inter-state tax

The single most common GST mistake is applying the wrong tax heads. The rule turns on the place of supply, not on where you happen to be sitting. If the place of supply is in the same state as the supplier, the supply is intra-state and you split the total GST into equal CGST and SGST portions. If the place of supply is in a different state, it is an inter-state supply and you charge a single IGST at the combined rate.

Example use case

A consultancy registered in Maharashtra raises two invoices on the same day. The first is to a client in Mumbai for ₹1,00,000 of taxable services at 18%: because the place of supply is within Maharashtra, the invoice shows ₹9,000 CGST plus ₹9,000 SGST. The second is to a client in Bengaluru for the same ₹1,00,000 at 18%: now the place of supply is Karnataka, so the invoice shows a single ₹18,000 IGST line instead. Same rate, same amount - only the tax heads change with the destination.

Common mistakes to avoid

• Charging CGST + SGST on an inter-state supply (or IGST on a local one)
• Leaving off the recipient GSTIN so the buyer cannot claim input credit
• Omitting or guessing HSN/SAC codes for your goods and services
• Skipping the place of supply, which decides the tax treatment
• Forgetting to flag invoices that fall under reverse charge
• Breaking the consecutive numbering of your invoice series

This page and the generator format your invoices and apply the rates you enter. They do not provide tax advice - confirm your GST rates, codes, and obligations with a qualified professional.