The Indian Travel Agency Dictionary
35 essential terms every Indian travel agent should know — GST billing, invoicing, PNR parsing, ledger management, and compliance. Each term links to a detailed guide.
Base Fare
The airline-published ticket price before airport taxes, surcharges, and GST — the only component subject to GST under the Principal model.
Read more in: How to Calculate GST on Air Tickets →Airport Taxes
Government levies (YQ, YR, PSF, UDF) added to the base fare. Passed through at cost and not subject to GST.
Read more in: How to Calculate GST on Air Tickets →B2B Invoice
A tax document issued to a business customer with a valid GSTIN, reported individually in GSTR-1 Table 4A.
Read more in: GSTR-1 & GSTR-3B Automation →B2B Quote
A vendor proposal from a DMC or wholesaler listing services, net rates, and package components for the agent to resell with markup.
Read more in: B2B Quote to Itinerary →B2C Invoice
A tax document for individual consumers without GSTIN, reported as aggregated totals by tax rate in GSTR-1 Table 7.
Read more in: GSTR-1 & GSTR-3B Automation →Booking Class
A single-letter fare category (Y, S, V, etc.) indicating cabin level (Economy, Business, First) and fare rules of a flight seat.
Read more in: PNR Parser Guide →Cancellation Note (E1)
A GST-compliant document reversing the original invoice amount minus cancellation charges when a booking is cancelled.
Read more in: Travel Agency Ledger Guide →Carry-Forward Balance
An amount from a previous transaction (overpayment, cancellation refund, off-platform adjustment) that rolls into a future booking, linked to the Original Invoice.
Read more in: Hidden Markups & Dual Invoicing →Credit Note
A GST-compliant document reversing or reducing tax liability from a previous invoice, required under Section 34 of the CGST Act.
Read more in: GSTR-1 & GSTR-3B Automation →Customer Advance
A prepayment received before a booking is confirmed, credited to the customer's advance ledger for application to future trips.
Read more in: Travel Agency Ledger Guide →Customer Advance Ledger
A per-customer account tracking all credits (deposits, refunds) and debits (booking applications) with a running balance using FIFO auto-application.
Read more in: Travel Agency Ledger Guide →DMC (Destination Management Company)
A B2B wholesale travel company packaging local hotel, transport, and sightseeing services at net rates for agents to resell.
Read more in: B2B Quote to Itinerary →Dual Invoicing
Generating a customer-facing tax invoice and a private internal margin sheet simultaneously — customer sees selling price, agency sees vendor costs and profit.
Read more in: Dual Invoicing Guide →FIFO (First-In-First-Out)
An accounting principle where the oldest advance or credit is applied first to new bookings, ensuring consistent and auditable balance application.
Read more in: Travel Agency Ledger Guide →GDS (Global Distribution System)
A centralized network (Amadeus, Sabre, Galileo) used by travel agents to search, book, and manage airline reservations globally.
Read more in: PNR Parser Guide →GDS Consolidator
A third-party provider supplying discounted air tickets at net rates to travel agents for resale under the Principal billing model.
Read more in: How to Calculate GST on Air Tickets →Generic PNR Parser
An AI-powered system that extracts flight information from free-form text, emails, WhatsApp messages, or images — beyond structured GDS formats.
Read more in: PNR Parser Guide →GSTR-1
The monthly/quarterly outward supply return detailing every invoice with customer GSTIN, HSN/SAC codes, and tax breakdowns.
Read more in: GSTR-1 & GSTR-3B Automation →GSTR-3B
The monthly summary GST return showing aggregate outward supplies, input tax credits claimed, and net tax liability payable.
Read more in: GSTR-1 & GSTR-3B Automation →HSN/SAC Code
A government-mandated classification code for goods (HSN) or services (SAC) required on every GST invoice — e.g., 996411 (flights), 996311 (hotels), 996422 (cabs).
Read more in: GSTR-1 & GSTR-3B Automation →IATA Code
A standardized identifier for airlines (2-letter, e.g., AI = Air India) or airports (3-letter, e.g., DEL = Delhi).
Read more in: PNR Parser Guide →Input Tax Credit (ITC)
GST paid to vendors that can be deducted from output GST liability under the Principal model. Not available under the 5% tour package scheme.
Read more in: GSTR-1 & GSTR-3B Automation →Internal EXT Invoice
An internal document tracking actual vendor cost, hidden markup, and net profit per booking. Not shared with customers or reported in GSTR-1.
Read more in: Dual Invoicing Guide →Net Rate
The wholesale price at which a vendor sells services to a travel agent, before markup or service fee is added.
Read more in: How to Calculate GST on Air Tickets →Off-Platform Settlement
A payment settled outside standard banking flow — via personal UPI, contra-entry, or cash adjustment — tracked internally without affecting the GST invoice.
Read more in: Hidden Markups & Dual Invoicing →Place of Supply
The jurisdiction determining CGST+SGST (intra-state) vs IGST (inter-state) split, derived from customer GSTIN or agency location for B2C.
Read more in: GSTR-1 & GSTR-3B Automation →PNR (Passenger Name Record)
A coded data record in GDS systems containing flight segments, passenger names, booking classes, and reservation status.
Read more in: PNR Parser Guide →Principal Model (@18%)
Agent is treated as buying and reselling the service. GST @18% on full selling price. ITC available on vendor purchases.
Read more in: Dual Invoicing Guide →Principal Model (@5%)
Concessional scheme for tour operators selling bundled packages. GST @5% on full package value. No ITC available.
Read more in: Dual Invoicing Guide →Processing Fee
A transparent charge for quote preparation and booking services, subject to GST under the Pure Agent billing model.
Read more in: B2B Quote to Itinerary →Pure Agent Model
Agent passes vendor costs as reimbursements and charges GST only on the service fee. Lower GST liability since reimbursements are excluded from turnover.
Read more in: Dual Invoicing Guide →Smart Receivables
A payment monitoring system tracking booking status and triggering automated WhatsApp/email reminders for overdue or partial payments.
Read more in: Travel Agency Ledger Guide →Tax Collected at Source (TCS)
A 5% tax under Section 206C(1G) of the Income Tax Act, applicable to international tour packages exceeding ₹7 lakh annually under LRS.
Read more in: How to Calculate GST on Air Tickets →Vendor Net Cost
The actual amount paid to the vendor for services, before any margin, markup, or processing fee is added by the agent.
Read more in: Hidden Markups & Dual Invoicing →These terms are explained in detail across our 7 travel agency guides. Each guide covers real scenarios with formulas, examples, and how MoonTrip automates the process.