GST invoices for travel agents in India: the practical guide

GST is where a lot of travel agencies quietly lose money or invite trouble — wrong rate, missing fields, or invoices stitched together in Excel. This is a practical overview of how GST applies to travel agents in India and what a compliant tax invoice must contain.

Two ways agents are taxed: package vs commission

Most disputes come from not separating these two models:

• Selling a tour package (as principal): you bundle hotels, transport and activities and sell one package. GST is commonly charged at 5% without input tax credit (ITC) on the package value (subject to conditions).
• Earning commission (as agent): you book a flight, hotel or a third party's package and earn a commission or service fee. That service is commonly taxed at 18% with ITC on the commission/margin.

Getting this split right matters: applying 5% to something that should be 18% (or vice versa) is the most common GST mistake agencies make. When in doubt, document which hat you're wearing on each booking.

What a compliant GST tax invoice must contain

A valid tax invoice isn't just a total — it needs specific fields, or your client can't claim credit and you're exposed on audit:

1. 1Your legal name, address and GSTIN.
2. 2A unique, sequential invoice number and the invoice date.
3. 3Customer name, address and their GSTIN (for B2B).
4. 4Place of supply and the state code — this decides CGST+SGST vs IGST.
5. 5Description of the service / package, with HSN/SAC code.
6. 6Taxable value, the GST rate, and tax split (CGST/SGST or IGST).
7. 7The total including tax, and a signature or digital authentication.

CGST/SGST vs IGST in one line

If the place of supply is in your own state, charge CGST + SGST. If it's another state, charge IGST. Your invoicing should pick this automatically from the customer's place of supply — doing it by hand is where errors creep in.

Sequential numbering and record-keeping

Invoice numbers must be unique and continuous within a financial year. Gaps, duplicates or 'INV-final-2' style numbering are red flags on audit. A system that issues numbers from a per-agency counter removes the risk entirely.

Common mistakes to avoid

• Charging the wrong rate by mixing up package vs commission models.
• Missing the customer's GSTIN on B2B invoices (they lose ITC, you lose goodwill).
• Wrong place of supply → wrong CGST/SGST/IGST split.
• Non-sequential or duplicated invoice numbers.
• Hand-built invoices that don't carry HSN/SAC codes.

Make compliant invoicing automatic

Once you're doing more than a handful of bookings a month, manual GST invoicing stops scaling. tripOS turns a confirmed booking into a compliant tax invoice in a click, so your numbers stay clean as you grow.