GST-Compliant Invoicing for Restaurants in India: A Practical Guide

GST invoicing is not the exciting part of running a restaurant, but getting it wrong is expensive. This is a plain-English guide to what a compliant restaurant tax invoice needs — not tax advice, but the practical shape of it.

What a compliant tax invoice must show

• Your registered business name, address and GSTIN
• A unique, sequential invoice number and the date of issue
• A description of each item with its HSN code where applicable
• The taxable value per line, the GST rate, and the tax amount
• The CGST and SGST (or IGST) split shown separately
• The grand total in figures, with any rounding shown as a round-off line

How the tax splits

For a normal dine-in sale within your own state, GST is split into equal halves: CGST and SGST. For an inter-state supply, a single IGST line applies instead. Restaurants almost always bill intra-state, so most invoices carry a CGST + SGST pair. The maths must be done in whole paise — floating-point rounding is what causes a bill total to be a paisa off and a guest to notice.

Why invoice numbers must be gap-free

GST law expects invoice numbering to be sequential and without gaps within a financial year. If your system skips numbers when an order is cancelled, or two terminals issue the same number, you have a reconciliation problem at filing time. The fix is a single atomic counter per business that hands out the next number only when an invoice is actually committed.

Common mistakes that surface in audits

• Rounding per line and again at total: Decide one rounding rule and apply it once, at the end.
• Discounts applied after tax: A pre-tax discount must reduce the taxable value, so GST is charged on the net.
• Missing HSN codes: Keep the HSN against the menu item so it flows onto every bill automatically.
• Editable invoice numbers: Numbers should be system-assigned, never typed by hand.

TheFoodix computes the CGST/SGST split per line in integer paise, applies discounts pre-tax, and issues gap-free, sequentially numbered tax invoices automatically at settlement — so compliance is a side effect of billing, not a separate chore.