Proforma or tax invoice?
A proforma is an offer. It has no invoice number in your GST series and no tax is due on it. When you receive an advance for services, or supply the goods, you issue the tax invoice (or a receipt voucher for an advance) with the full GST details.
- Title it “Proforma Invoice”
- Keep it out of your tax invoice numbering
- Show GST as an estimate
- Give a validity date