| Supplier name, address and GSTIN | Rule 46(a) | |
| Invoice number: consecutive, up to 16 characters (letters, digits, - and /), unique in the financial year | Rule 46(b) | One or more series are allowed |
| Date of issue | Rule 46(c) | |
| Recipient name, address and GSTIN or UIN, if registered | Rule 46(d) | |
| Unregistered recipient, value ₹50,000 or more: name, address, delivery address, state name and code | Rule 46(e) | Below ₹50,000 only if the buyer asks, 46(f) |
| HSN code of goods or SAC of services | Rule 46(g) | Digits by turnover: Notification 78/2020-CT |
| Description of goods or services | Rule 46(h) | |
| Quantity and unit (UQC) for goods | Rule 46(i) | |
| Total value of the supply | Rule 46(j) | |
| Taxable value after discount or abatement | Rule 46(k) | |
| Rate of CGST, SGST/UTGST, IGST and cess | Rule 46(l) | |
| Amount of each tax | Rule 46(m) | |
| Place of supply with state name, for inter-state supplies | Rule 46(n) | |
| Delivery address, if different from the place of supply | Rule 46(o) | |
| Whether tax is payable on reverse charge | Rule 46(p) | |
| Signature or digital signature of the supplier or authorised representative | Rule 46(q) | Not needed on an electronic invoice under the IT Act |
| QR code with the IRN, for e-invoices | Rule 46(r), Rule 48(4) | Only where e-invoicing applies |