Start with the transaction, not the template
An invoice format cannot decide whether a supply is intra-state or inter-state, whether a customer is registered, or which classification applies. Confirm those facts first. Then use a template that captures the information your business and customer need.
Pre-send checklist
- Use a unique, consecutive invoice number that fits your own financial-year sequence.
- Check the issue date, supplier name, address and GSTIN.
- Check the customer name, billing and delivery details, and GSTIN/UIN where applicable.
- Describe each good or service clearly; retain the underlying order, quotation or work confirmation.
- Check quantity, unit, taxable value, discount, rate and tax amount.
- Confirm whether CGST plus SGST or IGST is appropriate for the actual place-of-supply situation.
- State reverse-charge treatment where relevant and retain supporting records.
Separate a sales invoice from a GST-compliant tax invoice
Every business document called an “invoice” is not automatically a tax invoice for every purpose. GST registration status, nature of supply, scheme, customer status and current rules matter. A basic generator is useful for drafting, but it cannot replace a CA or tax adviser’s review of your tax position.
Build a repeatable control
Keep one approved numbering rule, one customer master, and one person responsible for final checks. Save the purchase order, delivery proof and invoice together. At month-end, reconcile the issued invoice list to accounting records and returns rather than relying on memory.
Sources and further reading
General information only; verify current requirements with a qualified tax professional.