Service GST invoice

Services are billed using SAC codes (goods use HSN). Villva validates the SAC code, computes the correct GST split, and lets you raise one compliant invoice per completed service request.

SAC code and GST on a service

When you create or edit a service, its HSN/SAC code is validated against the GST master, not just stored.

1. Enter the SAC code on the service (for example 998719).
2. A valid code is accepted; an unknown code such as 000000 is rejected with “invalid SAC/HSN code”.
3. The component tax rate drives the tax treatment shown in the cost summary:
   • Intra-state (supplier and customer in the same state) is represented as CGST + SGST.
   • Inter-state is represented as IGST.
4. The indicative tax on the summary equals the sum of the per-line tax amounts.

Generate a service invoice

Only a Completed service request can be invoiced.

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Add a short GIF here: opening a completed request, clicking Generate invoice, and the GST-correct service invoice appearing with its SAC code and CGST/SGST (or IGST) breakdown.

1. Open a completed request (see Service requests).
2. Click Generate invoice.
3. The invoice is created using:
   • The service SAC code.
   • The agreed service amount as the taxable value.
   • The correct GST split for the customer’s place of supply, CGST + SGST for an intra-state customer, IGST for an inter-state customer.
   • A round-off line, so the invoice total equals taxable + tax ± round-off.

For example, an intra-state job of 100,000 at 18% under SAC 998719 produces CGST 9,000 + SGST 9,000 and a total of 118,000. The same job for an inter-state customer produces IGST 18,000.

The invoice is saved in Finance and linked back to the request, and a back-link to the invoice appears on the request.

Rules

• A request that is not Completed cannot be invoiced (“only completed requests can be invoiced”).
• A request can be invoiced only once in this version.

Review service invoices

1. Open Service desk → Invoices.
2. The list shows service invoices with invoice number, customer, date, taxable amount, tax, total and the linked enquiry number.
3. Click an invoice to see the full tax breakdown, SAC, CGST/SGST or IGST, round-off and total, with a back-link to the originating request.

Only your organisation’s service invoices appear.

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Add a screenshot here: a service invoice detail showing the SAC code, taxable value, CGST/SGST or IGST breakdown, round-off, total and the link back to its enquiry number.