GST Input Tax Credit on Corporate Travel: Why the Billing GSTIN Decides Everything

The trip went well. The hotel was right, the flights were on time, and the client's sales head sent a thank-you note. Then, three weeks later, an email from their finance team: "We can't claim the GST on this invoice. Please re-issue it to our Karnataka GSTIN."

If you handle corporate travel, you have had that email. It is not finance being difficult. To a company, GST charged on business travel is money it expects to get back as input tax credit (ITC). An invoice billed to the wrong GSTIN, or with the wrong place of supply, turns that credit into a cost. Corporate clients notice who causes that, and it affects whether they keep booking with you.

This guide covers the mechanics: why the billing GSTIN and the place of supply decide whether credit is available, what goes wrong with hotel stays in another state, what a finance team checks on your invoice, and how GSTR-2B matching works.

This is general information for travel agency owners, not tax advice. It reflects the law as we read it on 18 October 2026. The exact treatment of your supplies depends on how you sell (agent or principal) and what you invoice, so confirm your position with your chartered accountant.

Three questions decide ITC

For a company to claim the GST on your invoice, three things broadly have to line up:

• The invoice must be addressed to one of its GSTINs. A company with offices in several states usually holds a separate registration in each one, and each registration is treated as a separate taxpayer for credit.
• The tax must be the right kind for that GSTIN. CGST and SGST charged for a supply in Karnataka can only be used by the company's Karnataka registration. Its Maharashtra registration cannot use them.
• The invoice must show up in the company's GSTR-2B. Since 1 January 2022, Section 16(2)(aa) of the CGST Act (with Rule 36(4) of the CGST Rules) allows ITC only on invoices that the supplier has reported in GSTR-1 (or IFF) and that appear in the recipient's GSTR-2B.

The place of supply links all three. It decides whether you charge CGST + SGST or IGST, and which state the tax belongs to. Get it wrong, or bill a GSTIN in the wrong state, and the credit is lost even if every number on the invoice is correct.

Place of supply: the general rule and the hotel exception

For services where both supplier and recipient are in India, place of supply is set by Section 12 of the IGST Act. Two parts matter most for travel.

The general rule (Section 12(2)). For a service supplied to a registered person, the place of supply is the location of that person. In practice, that means the state of the GSTIN you bill. Passenger transport follows a similar rule for registered recipients (Section 12(9)). For many of the services an agency invoices to a company, the GSTIN you choose effectively sets the place of supply.

The hotel exception (Section 12(3)). For lodging in a hotel, inn, guest house, home stay, club or campsite, and for services ancillary to it, the place of supply is where the property is located, wherever the guest's company is registered. A hotel in Bengaluru charges Karnataka CGST + SGST whether the guest flew in from Mumbai or Delhi.

So consider a Pune-based client whose employee spends four nights at a Bengaluru hotel. The hotel's GST belongs to Karnataka. If the client has a Karnataka GSTIN and the hotel invoice carries it, the Karnataka registration can claim the credit. If the invoice carries the Maharashtra GSTIN, the credit is generally lost, because Maharashtra can't use Karnataka's CGST + SGST. A client with no registration in Karnataka usually can't claim that hotel GST at all, however the invoice is worded.

When you resell the stay inside a package, or invoice your own service fee, the place of supply of your invoice depends on what exactly you are supplying. Section 12 has several sub-sections and the right one is a judgement your CA should make once for each type of billing. After that, apply it the same way on every booking.

Why multi-state GSTINs make this your problem

Large and mid-sized companies often hold GSTINs in several states, and their travel spreads across all of them. The registration an employee belongs to is often not the right one to bill. The right one depends on where the travel and the spend happen and which office is paying.

The client's finance team knows which GSTIN should carry each trip. Your booking executive usually doesn't, and the invoice often takes the GSTIN from whatever was entered when the client was set up. That is how one GSTIN ends up on every invoice, and how the "please re-issue" emails start.

The fix is a habit you build into your process: decide the billing GSTIN when the booking is made, not when the invoice is raised. By invoice time the details are fuzzy and the person who knew has moved on to the next trip.

What corporate finance teams check on your invoice

When a company's accounts team picks up your invoice, they check:

• The right GSTIN and legal name, exactly as registered. A typo in one character means it won't match.
• Place of supply, as a state, printed on the invoice.
• The correct tax split. CGST + SGST for a supply within the GSTIN's state, IGST for one between states. A wrong split is the most common reason a credit gets questioned.
• Taxable value shown separately from tax, with the rate on each line.
• A unique invoice number and date that match what you report in GSTR-1.
• Credit notes billed to the same GSTIN as the original invoice, so the reversal lands where the credit was taken.
• On-time GSTR-1 filing. If you file late, your invoice misses their GSTR-2B for the month, and they can't take the credit until it appears.

Two more points their CA will raise even if yours doesn't. Some credits are blocked by Section 17(5) of the CGST Act. These include travel benefits given to employees on vacation, such as leave or home travel concession, and in many cases food and beverages. There is also a time limit: credit for a financial year generally has to be claimed by 30 November of the following year or by the date the annual return is filed, whichever is earlier. Neither is for you to decide. But knowing they exist helps you answer a finance team's questions without guessing.

GSTR-2B matching, in plain words

GSTR-2B is a monthly statement the GST portal generates for each GSTIN. It lists the invoices and credit or debit notes that suppliers have reported against that GSTIN. The company's finance team downloads it and checks it against their own purchase records. An invoice that is in their books but missing from 2B means a credit they can't take yet, and someone (often you) gets a call.

You make that reconciliation easier when you can send them a list of what you billed, set out the way 2B is set out: by GSTIN, by month, with invoices separate from credit and debit notes. Most agencies can't produce that list without someone building it by hand in a spreadsheet.

How TourBrain handles it

The corporate desk in TourBrain is built around the billing GSTIN:

• Every state GSTIN on the account. You store each GSTIN your client holds and mark one as primary. A department can have its own default GSTIN.
• A billing GSTIN on each booking. Every corporate request and trip carries the GSTIN it bills. It defaults to the department's GSTIN, otherwise the primary one, and you can change it per booking. When it changes, the trip's place of supply moves to that GSTIN's state and the CGST + SGST or IGST split is recalculated.
• Locked once invoiced. The invoice records the GSTIN it bills, and credit and debit notes inherit it. Once a live tax invoice exists for the trip, TourBrain won't let anyone change the billing GSTIN quietly. You delete the draft or credit-note the invoice first.
• An ITC register per client GSTIN, per month. It lists every issued invoice, credit note and debit note with the invoice number, date, your GSTIN, place of supply, taxable value and CGST, SGST and IGST. Each one is marked eligible or not, with the reason when it isn't. Drafts, proformas and cancelled invoices are left out, and credit notes count as negative.
• A GSTR-2B-shaped export. You can download it as CSV or Excel, split into B2B and B2B credit/debit note sections, so the client's finance team can check it line by line against the 2B they download.
• Shared with the client. The same register is in your agency view and in the client's corporate portal, where their admins and travel desk can download it themselves.

What the "eligible" flag does and doesn't mean: TourBrain checks whether the GSTIN on each document is registered in the document's place-of-supply state. It doesn't decide which sub-section of Section 12 applies to a particular supply. It doesn't know whether the client's credit is blocked under Section 17(5). It can't put an invoice into 2B for you; your GSTR-1 filing does that. Your CA still decides the treatment, and the register shows whether each invoice follows it.

The corporate desk, its client portal and the ITC register are on the Professional plan and above. For the GST basics behind all this, such as agent versus principal and CGST + SGST versus IGST, see our practical GST guide for travel agents. You can also see the rest of the corporate travel desk and the full feature list.

A corporate client mostly judges your invoices by whether their finance team ever has to email you about one. Book a corporate-desk demo and we'll walk you through setting up a corporate account with every GSTIN it holds.

Last updated: 18 October 2026. Place-of-supply references are to Section 12 of the IGST Act, 2017. ITC conditions are under Sections 16 and 17 of the CGST Act, 2017 and Rules 36 and 60 of the CGST Rules, as published by CBIC. This is general information, not tax advice. Confirm with your chartered accountant how these rules apply to your own invoicing before you rely on them.