Tax invoice with GSTIN and HSN/SAC
GST Invoice Format (India)
Create a GST tax invoice with both parties’ GSTIN, per-line rates from the GST slabs and totals in rupees, then download a PDF.
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What a GST tax invoice must carry
A tax invoice under GST is prescribed in some detail, and a customer claiming input tax credit needs the relevant parts of it. Not every particular applies to every supply: place of supply matters where the supply crosses a state boundary, and how many digits of HSN or SAC you must show depends on your turnover.
- The words “Tax Invoice”
- Supplier name, address and GSTIN
- A consecutive invoice number and the date of issue
- Recipient name, address and GSTIN where registered
- Place of supply with state and code, where the supply is inter-State
- HSN code for goods or SAC code for services, to the digit depth your turnover requires
- Taxable value per line after any discount
- Rate and amount of CGST, SGST/UTGST or IGST
- Whether the tax is payable on reverse charge
- Signature or digital signature of the supplier
A worked GST invoice
This is an intra-state supply, so the 18% splits into CGST 9% and SGST 9%. The same supply to another state would carry IGST 18% instead — one line rather than two, at the same total.
| Description | HSN/SAC | Qty | Rate | Taxable value |
|---|---|---|---|---|
| Management consulting services | SAC 998311 | 10 hrs | ₹2,500.00 | ₹25,000.00 |
| Software licence, annual | HSN 8523 | 2 | ₹7,500.00 | ₹15,000.00 |
| Total taxable value | ₹40,000.00 | |||
| CGST at 9% | ₹3,600.00 | |||
| SGST at 9% | ₹3,600.00 | |||
| Total GST | ₹7,200.00 | |||
| Invoice total | ₹47,200.00 | |||
The two halves are each 9% of ₹40,000.00, and together they are the same ₹7,200.00 that a single 18% IGST line would carry on an inter-state supply. Place of supply is what decides which of the two you issue, which is why it is a required field rather than a note.
CGST, SGST and IGST
One rate, split two ways or charged as one, depending on where the supply lands.
- Rates since 22 September 2025
- The GST Council reduced the structure to 5% and 18%, with a 40% rate on demerit goods. The 12% and 28% slabs no longer apply. This generator offers 5, 18 and 40, and you can enter any rate your classification requires.
- CGST + SGST
- Intra-state supply: the rate is halved between the centre and the state. An 18% supply becomes 9% CGST and 9% SGST on the invoice.
- IGST
- Inter-state supply, and exports and imports: the full rate is charged as a single integrated tax.
- Place of supply
- The rule that decides which of the two applies. It is not always the customer’s address, and the rules differ for goods and for services, which is why it is stated on the invoice rather than inferred.
- HSN and SAC
- HSN classifies goods, SAC classifies services. How many digits you must show depends on your turnover, so a small supplier and a large one can both be correct at different depths.
Before you file it
Check that the GSTIN of both parties is the full 15 characters, that the invoice number is unique within the financial year and unbroken, and that each line’s HSN or SAC is the one you actually use in your returns.
Invoice Workshop formats the document and computes the totals. It does not classify your supplies, determine place of supply, decide your HSN digit depth, apply reverse charge, or produce a document guaranteed to satisfy a GST officer. The rate structure above reflects the 56th GST Council decisions effective 22 September 2025, checked on 2 September 2026 against the Government of India press release; classification and filing are matters for you or your chartered accountant.