Quotation, proforma and tax invoice
| Document | Purpose | GST payable? | Buyer can claim ITC? |
|---|---|---|---|
| Quotation / estimate | Offer before the order | No | No |
| Proforma invoice | Request for advance or approval after the order | No | No |
| Tax invoice | The actual sale | Yes | Yes, if conditions are met |
Advances
If the customer pays an advance against your quotation, issue a receipt voucher (Rule 50). For services, GST is payable on the advance; for goods, regular taxpayers do not pay GST on advances (Notification 66/2017-Central Tax).
Common mistakes
- Writing “₹50,000 + GST as applicable” without the rate: state the rate and amount.
- No validity date, so a customer holds you to an old price months later.
- Calling the quotation an “invoice”; it confuses buyers and their accountants.
Official sources
- CBIC tax information portal: Rule 50 of the CGST Rules; Notification 66/2017-Central Tax.
Checked on 28 October 2026.