GST on Agent Service Fees: 18% Rule & ITC Claims Explained 2026
By Arjun Kapoor (Arjun Kapoor tracks error fares, mileage runs and award-chart sweet spots for Indian travellers. He moderates two Telegram fare-alert channels and has booked Europe round-trips at sub-₹25,000 four times in the last 24 months.) · Published · 10 min read
Travel agents in India levy 18% GST on their own service fees — not the base airfare. This piece explains why, how Input Tax Credit flows, and what a GST-compliant invoice actually needs to show.
TL;DR — The Short Answer
Your travel agent's service fee (the markup or facilitation charge they levy on top of the base fare) attracts 18% GST under the heading of 'support services.' The 5% GST that applies to economy-class air travel is the airline's liability on the base fare — your agent is not collecting that on your behalf anymore (post-2017 GST regime). If your agency is GST-registered, you can claim Input Tax Credit (ITC) on most of the goods and services your firm buys to run the business — software subscriptions, office rent, GDS fees — as long as the supplier gives you a valid GST invoice. Always confirm the current rate on the GST Council portal before quoting clients.
Why 18% and Not 5%? The SAC Code Logic
The confusion almost always comes from conflating two different GST entries. The 5% rate applies to the airline's ticket supply (SAC 996411 — scheduled domestic air transport). Your agency's service fee is classified under SAC 998559 or 998571 — essentially 'other support services incidental to transport' — and those sit squarely in the 18% slab.
In practice this means a ₹500 agency facilitation fee becomes ₹590 to the client. Agents sometimes try to bury this inside the base fare to look competitive, but DGCA's transparency guidelines — sharpened after a few high-profile complaints in 2024–25 — now push for itemised breakdowns. The client must be able to see: (a) base fare, (b) taxes and carrier fees, (c) agent service fee, (d) GST on the service fee. Mix them up and you're asking for a consumer complaint on NCH 1915.
One practical note: if you're running a B2B desk and issuing B2B invoices to corporate accounts, your GST number and the corporate's GST number both need to appear on the tax invoice. This is how they claim ITC downstream. Miss it and the CFO of your corporate client will come calling.
What Can an Agent Actually Claim ITC On?
ITC is the genuinely useful part of being GST-registered. You collect 18% on your service fees and pass it to the government, but you get credit for the GST you paid on your own purchases — reducing your net liability. Here's roughly how it stacks up for a typical agency desk:
- GDS subscription fees (Amadeus, Sabre, Travelport): typically carry 18% GST from the vendor — fully claimable.
- Office rent: your landlord must be GST-registered and issue a proper tax invoice for ITC to flow. Many small landlords aren't registered, in which case there's no ITC to claim.
- Software/SaaS tools (CRM, accounting, even some OTA back-office APIs): 18% GST on B2B software is standard and fully claimable.
- Internet, phone (office lines): claimable, pro-rated if mixed business/personal.
- Employee travel on official duty: economy airfare GST is claimable if the trip is demonstrably for business; there's a blocked credit list under Section 17(5) that catches personal travel and certain hospitality expenses.
What you cannot claim ITC on: food and beverages (unless you're in the catering trade), club memberships, health/fitness expenses, and any purchase where your supplier hasn't filed their GSTR-1 correctly. That last one is the silent killer — your ITC gets provisionally available in GSTR-2B but gets blocked if the vendor doesn't match. Run your reconciliation monthly, not quarterly, to catch mismatches early.
The Invoice Format DGCA Now Expects
DGCA's Passenger Charter and subsequent airline-agent circulars don't define an invoice template word-for-word, but the expectation (and GST law) together mean a compliant agent invoice needs:
- Agent GSTIN and trade name at top
- Client name + GSTIN (for B2B; optional for individual consumers)
- Invoice number and date
- Itemised fare breakdown: base fare, YQ/YR fuel surcharge, airport development fee, CUTE charges, and any other carrier-levied fees — these are collected on behalf of the airline, not your income
- Agent service fee — stated separately as a line item
- GST on service fee at 18% — CGST 9% + SGST 9% for intra-state, or IGST 18% for inter-state/export
- Total payable
- SAC code for the service line
If you're using a GDS ticketing system, your BSP settlement already separates base fare from agent commission. The invoice you issue to the client should mirror that structure — don't just print the PNR and a grand total and call it a tax invoice. That's technically non-compliant and will cause problems when your corporate client tries to claim ITC.
For B2B agent-to-agent work — say, a small sub-agent passing a booking through a consolidator — the consolidator typically issues the invoice and the sub-agent issues their own service fee invoice on top. Each level has its own GST obligation. Keep those transaction chains clean.
Reverse Charge Mechanism: When Does It Apply?
If you're booking international tickets through a non-Indian airline or foreign GDS entity that doesn't have a GST registration in India, Reverse Charge Mechanism (RCM) kicks in. You (the registered recipient in India) are liable to pay the GST on that supply. This is less common for domestic bookings but comes up for agents who deal directly with foreign carriers for international corporate accounts.
In practice: check whether your foreign supplier has a GST registration. If they do, normal forward charge applies and they invoice you with Indian GST. If they don't, RCM applies — you pay the tax directly to the government, but you can also claim ITC on the same amount (subject to the usual conditions). Keep this documented; it's an area auditors look at.
Common Mistakes Agents Make (And Their Cost)
I've seen these repeatedly from agents who try to self-file GST without an accountant:
- Charging 5% on the service fee — incorrect. You're supplying a service, not air travel. The audit risk here is real.
- Not filing GSTR-1 on time — your corporate clients' ITC gets blocked in GSTR-2B. You'll get angry calls from finance teams.
- Treating BSP collections as your turnover — the airline's base fare and taxes you collect and remit through BSP/UATP are not your revenue. Only your service fee is. Overstating turnover inflates your GST liability.
- Missing the composition scheme trap — if your aggregate turnover is under ₹50 lakh, you might qualify for composition, but composition dealers cannot issue tax invoices or pass ITC to clients. For any agent with corporate clients, this is a dealbreaker.
Work with a CA who actually understands travel trade GST, not just a generic practitioner. The SAC codes and the BSP settlement mechanics are not obvious to generalists.
Using FlightGPT Partner for B2B Billing Clarity
If you're managing client bookings through FlightGPT Partner (our B2B portal), the ledger already separates your agency's wallet debits from fare components, which maps reasonably cleanly onto the invoice structure described above. It's not a GST billing system on its own — you'll still need your accounting software — but having a per-booking cost breakdown in one place makes invoice preparation faster and audit trails cleaner.
For the AI-assisted fare search side of things, FlightGPT's main search can help you spot flexible-date windows before you commit to a booking; useful when a corporate client wants the cheapest week in a given month and you need to present options quickly.
Frequently asked questions
Is GST applicable on the full airline ticket amount or only the agent's fee?
GST at 18% applies only to the agent's own service fee. The base airfare and airline-levied charges (fuel surcharge, airport fees) carry their own GST — typically 5% for economy on domestic routes — which the airline pays to the government. Your service fee is a separate taxable supply.
Can a travel agent claim ITC on the GDS subscription fee paid to Amadeus or Sabre?
Yes, if the GDS vendor issues a valid GST tax invoice with their GSTIN and yours. Both Amadeus India and Sabre Travel Technologies operate locally and are GST-registered, so ITC is generally available. Verify that your vendor's GSTR-1 is filed and matched in your GSTR-2B each month — unmatched credit gets blocked.
What SAC code should a travel agent use for their service fee?
The most commonly used code is SAC 998551 (reservation services for transportation) or 998559 (other transport support services). Some agents use 998571. Confirm with your CA — the GST Council's classification list is the authoritative source, and a wrong SAC code on invoices can trigger notices.
Does GST apply on service fees for international flight bookings?
International air travel is generally zero-rated for GST (the ticket itself). However, the agent's service fee for facilitating that booking is still a taxable supply of service in India, so 18% GST applies on your fee regardless of the route. IGST at 18% is the standard treatment if the client is in a different state.
What happens if a client disputes the 18% GST charge on my service fee?
Show them the invoice line-item and the GST Council's rate schedule. It's a statutory charge, not a discretionary markup. For corporate clients, remind them they can claim ITC on the 18% GST if they're registered — so the effective cost to them is just the service fee itself, net of their ITC recovery.
Is there a threshold below which a travel agent doesn't need to charge GST?
Yes. If your aggregate annual turnover is below ₹20 lakh (₹10 lakh in some states), GST registration isn't mandatory. But any agent dealing with corporate clients or inter-state supplies should register regardless of turnover — corporate clients need a tax invoice to claim ITC, and they won't work with unregistered agents. Check the current threshold at gst.gov.in before making a decision.