InvoiceKitQuick answer: A GST tax invoice must show the supplier's name, address and GSTIN, a unique serial number, the date, the recipient's details (and GSTIN if registered), HSN/SAC codes, taxable value, the GST rate and amount (CGST + SGST for intra-state sales, IGST for inter-state sales), and the place of supply.
CGST + SGST or IGST?
| Sale type | Tax to charge | Example at 18% |
|---|---|---|
| Within the same state (intra-state) | CGST + SGST, half each | 9% CGST + 9% SGST |
| To another state (inter-state) | IGST | 18% IGST |
In the generator, set the tax name to GST and the rate to 18 (or 5, 12 or 28). Tick Split tax in half for intra-state sales to show CGST and SGST. For inter-state sales, change the tax name to IGST and untick the split.
Mandatory fields on a GST invoice
- Supplier name, address and GSTIN (put these in the From box)
- Consecutive invoice serial number, unique for the financial year (for example GST/2026-27/001)
- Invoice date
- Recipient name, address and GSTIN if registered, plus the place of supply with state name and code
- HSN code for goods or SAC code for services in each item description
- Quantity, unit, taxable value, and the rate and amount of each tax
- Signature or digital signature of the supplier
Payment details Indian clients expect
Add your bank name, account number, IFSC and UPI ID in the notes box. UPI makes small invoices much faster to pay.
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FAQ
Is this a valid GST invoice format?
It includes the fields usually required on a tax invoice. Add your GSTIN, HSN/SAC codes and place of supply. E-invoicing (IRN) is mandatory only above the turnover threshold notified by the GST Council. Confirm your obligations with a CA.
How do I show CGST and SGST separately?
Set tax name to GST, enter the full rate (for example 18), and tick Split tax in half. The invoice shows CGST 9% and SGST 9%.
Can I make an invoice without GST?
Yes. If you're not GST-registered, set the tax rate to 0 and use the title Invoice; see our invoice format without GST. A Bill of Supply is for registered composition or exempt suppliers instead; see the bill of supply format.
More invoice templates
Last updated · Written by the Rooh Sites team. This page is general information, not tax or legal advice.