We generate all our revenue from contracts with customers. We recognize revenue when we satisfy a performance obligation by transferring control of the promised services to a customer in an amount that reflects the consideration that we expect to receive in exchange for those services. When we act as an agent in the transaction, we recognize revenue for only our commission on the arrangement. We determine revenue recognition through the following steps:

At contract inception, we assess the services promised in our contracts with customers and identify a performance obligation for each promise to transfer to the customer a service (or bundle of services) that is distinct. To identify the performance obligations, we consider all of the services promised in the contract regardless of whether they are explicitly stated or are implied by customary business practices. We have provided qualitative information about our performance obligations for our principal revenue streams discussed below. There was no significant revenue recognized in the years ended December 31, 2022, 2021 and 2020 related to performance obligations satisfied in prior periods, respectively. We have applied a practical expedient and do not disclose the

value of unsatisfied performance obligations that have an original expected duration of less than one year. The Company expects to complete its performance obligations within one year from the initial transaction date. The value related to our remaining or partially satisfied performance obligations relates to subscription services that are satisfied over time or services that are recognized at a point in time, but not yet achieved. Our timing of services, invoicing and payments are discussed in more detail below and do not include a significant financing component. Our customer invoices are generally due 30 days from the time of invoicing.

We recognize an asset for the incremental costs of obtaining a contract with a customer if we expect the benefit of those costs to be longer than one year. Although the substantial majority of our contract costs have an amortization period of less than one year, we have determined contract costs arising from certain sales incentives have an amortization period in excess of one year given the high likelihood of contract renewal. Sales incentives are not paid upon renewal of these contracts and therefore are not commensurate with the initial sales incentive costs. As of both December 31, 2022 and 2021, there were $4 million of unamortized contract costs in other long-term assets on our consolidated balance sheet. We amortize these contract costs on a straight-line basis over the estimated customer life, which is based on historical customer retention rates. Amortization expense recorded to selling and marketing expense on our consolidated statements of operations during each of the years ended December 31, 2022, 2021 and 2020, was $1 million. We assess such asset for impairment when events or circumstances indicate that the carrying amount may not be recoverable. No impairments were recognized during the years ended December 31, 2022, 2021 and 2020.

The recognition of revenue may require the application of judgment related to the determination of the performance obligations, the timing of when the performance obligations are satisfied and other areas. The determination of our performance obligations does not require significant judgment given that we generally do not provide multiple services to a customer in a transaction, and the point in which control is transferred to the customer is readily determinable. In instances where we recognize revenue over time, we generally have either a subscription service that is recognized over time on a straight-line basis using the time-elapsed output method, or based on other output measures that provide a faithful depiction of the transfer of our services. When an estimate for cancellations is included in the transaction price, we base our estimate on historical cancellation rates and current trends. Taxes assessed by a government authority that are both imposed on and concurrent with a specific revenue–producing transaction, that are collected by us from a customer, are reported on a net basis, or in other words excluded from revenue on our consolidated financial statements.

The application of our revenue recognition policies and a description of our principal activities, organized by reportable segment, from which we generate our revenue, are presented below.

Tripadvisor-branded Hotels Revenue. Our largest source of Tripadvisor Core segment revenue is generated from click-based advertising on Tripadvisor-branded websites, which we refer to as our hotel meta (formerly referred to as hotel auction) revenue, which is primarily comprised of contextually-relevant booking links to our travel partners’ websites. Our click-based travel partners are predominantly online travel agencies, or OTAs, and hotels. Click-based advertising is generally priced on a cost-per-click, or “CPC” basis, with payments from travel partners determined by the number of travelers who click on a link multiplied by the CPC rate for each specific click. CPC rates are determined in a dynamic, competitive auction process, where the travel partner bids for rates and availability to be listed on our platform. When a CPC bid is submitted, the travel partner agrees to pay us the bid amount each time a traveler clicks on the link to that travel partner’s websites. Bids can be submitted periodically – as often as daily – on a property-by-property basis. We record click-based advertising revenue as the click occurs and traveler leads are sent to the travel partner websites as our performance obligation is fulfilled at that time. Click-based revenue is generally billed to our travel partners on a monthly basis consistent with the timing of the service. We also generate revenue from our cost-per-action, or “CPA” model, which consists of contextually-relevant booking links to our travel partners’ websites which are advertised on our platform. We earn a commission from our travel partners, based on a pre-determined contractual commission rate, for each traveler who clicks to and books a hotel reservation on the travel partners’ website, which results in a traveler stay. CPA revenue is billable only upon the completion of each traveler’s stay resulting from a hotel reservation. The travel partners provide the service to the travelers and we act as an agent under GAAP. Our performance obligation is complete at the time of the hotel reservation booking, and the commission earned is recognized upon booking, as we have no post-booking service

obligations. We recognize this revenue net of an estimate of the impact of cancellations, using historical cancellation rates and current trends. Contract assets are recognized at the time of booking for commissions that are billable upon the completion of a traveler's stay. CPA revenue is generally billed to our travel partners monthly for traveler stays completed in that month.

In addition, we offer business-to-business (“B2B”) solutions to hotels, including subscription-based advertising to hotels, owners of B&Bs, and other specialty lodging properties. Our performance obligation is generally to enable subscribers to advertise their businesses on our platform, as well as to manage and promote their website URL, email address, phone number, special offers and other information related to their business. Subscription-based advertising services are predominantly sold for a flat fee for a contracted period of time of one year or less and revenue is recognized on a straight-line basis over the period of the subscription service as efforts are expended evenly throughout the contract period. Subscription-based advertising services are generally billed at the inception of the service. When prepayments are received, we recognize deferred revenue initially on our consolidated balance sheet for the amount of prepayment in excess of revenue recognized, until the performance obligation is satisfied. To a lesser extent, we offer travel partners the opportunity to advertise and promote their business through hotel sponsored placements on our platform. This service is generally priced on a CPC basis, with payments from travel partners determined by the number of travelers who click on the sponsored link multiplied by the CPC rate for each specific click. CPC rates for hotel sponsored placements that our travel partners pay are generally based on bids submitted as part of an auction by our travel partners. When a CPC bid is submitted, the travel partner agrees to pay us the bid amount each time a traveler clicks on a link to our travel partner’s websites. Bids may be submitted periodically – as often as daily – on a property-by-property basis. We record this click-based advertising revenue as the click occurs and traveler leads are sent to the travel partner as our performance obligation is fulfilled at that time. Hotel sponsored placements revenue is generally billed to our travel partners monthly, consistent with the timing of the service.

Tripadvisor-branded Display and Platform Revenue. We offer travel partners the ability to promote their brands through display-based advertising placements across our platform. Our display-based advertising clients are predominantly direct suppliers of hotels, airlines and cruises, as well as destination marketing organizations. We also sell display-based advertising to OTAs and other travel related businesses, as well as advertisers from non-travel categories. Display-based advertising is sold predominantly on a cost per thousand impressions, or CPM, basis. The performance obligation in our display-based advertising arrangements is to display a number of advertising impressions on our platform and we recognize revenue for impressions as they are delivered. Services are generally billed monthly. We have applied the practical expedient to measure progress toward completion, as we have the right to invoice the customer in an amount that directly corresponds with the value to the customer of our performance to date, which is measured based on impressions delivered.

Tripadvisor Experiences and Dining Revenue. We generate revenue from our experiences and restaurant service offerings on Tripadvisor-branded websites and mobile apps. Tripadvisor receives intercompany (intersegment) revenue consisting of affiliate marketing commissions earned primarily from experience bookings and, to a lesser extent, restaurant reservation bookings, on Tripadvisor-branded websites and mobile apps, fulfilled by Viator and TheFork, respectively, which are eliminated on a consolidated basis. The performance obligations, timing of customer payments for our experiences and dining transactions, and methods of revenue recognition are consistent with the Viator and TheFork segments, as described below. In addition, Tripadvisor restaurant service offerings, or B2B restaurants offering, generate subscription fees for subscription-based advertising to our restaurant partners that allow restaurants to manage and promote their website URL, email address, phone number, special offers and other information related to their business, as well as access to certain online reservation management services, marketing analytic tools, and menu syndication services. As the performance obligation is to provide restaurants with access to these services over the subscription period, subscription fee revenue is recognized over the period of the subscription service on a straight-line basis as efforts are expended evenly throughout the contract period. Subscription-based advertising services are generally billed at the inception of the service. When prepayments are received, we recognize deferred revenue initially on our consolidated balance sheet for the amount of prepayment in excess of revenue recognized, until the performance obligation is satisfied. In addition, we offer restaurant partners the opportunity to advertise and promote their business through restaurant media advertising placements on our platform. This service is generally priced on a CPC basis, with payments from restaurant partners determined by the number of clicks by consumers on the sponsored link multiplied by the CPC rate for each specific click. CPC rates for media advertising placements agreed to by our restaurant partners are based on a pre-determined

contractual rate. We record this click-based advertising revenue as the click occurs and diner leads are sent to the restaurant partner as our performance obligation is fulfilled at that time. Click-based revenue is generally billed to our restaurant partners monthly, consistent with the timing of the service.

Other Revenue. We also offer travelers alternative accommodations rentals (formerly referred to as vacation rentals), cruises, flights, and rental cars solutions on our platforms which complement our end-to-end travel experience. Our alternative accommodation rentals offering provides information and services that allow travelers to research and book vacation and short-term rental properties, including full homes, condominiums, villas, beach properties, cabins and cottages. Our alternative accommodation rentals offering primarily generates revenue by offering individual property owners and managers the ability to list their properties on our platform thereby connecting with travelers through a free-to-list, commission-based option. These properties are listed on our Tripadvisor-branded websites and mobile apps, and Tripadvisor's portfolio of travel media brands, including, www.flipkey.com, www.holidaylettings.co.uk, www.niumba.com, and www.vacationhomerentals.com. We earn commissions associated with rental transactions through our free-to-list model from both the traveler and the property owner or manager. We provide post-booking service to the travelers, property owners and managers until the time the rental commences, which is the time the performance obligation is completed. Revenue from transaction fees is recognized at the time that the rental commences. We act as an agent in the transactions, under GAAP, as we do not control any properties before the property owner provides the accommodation to the traveler and do not have inventory risk. We generally collect payment from the traveler at the time of booking, representing the amount due to the property owner or manager, as well as our commission. That portion of the payment representing our commission is recorded as deferred revenue on our consolidated balance sheet until revenue is recognized, and that portion of the payment representing the amount due to the property owner is recorded as a deferred merchant payable on our consolidated balance sheet until payment is made to the property owner after the completion of the rental.

In addition, Other Revenue includes revenue generated from cruises, flights, and rental cars offerings on Tripadvisor-branded websites and mobile apps and Tripadvisor’s portfolio of brands, which primarily includes click-based advertising and display-based advertising revenue. The performance obligations, timing of customer payments for these offerings, and methods of revenue recognition are generally consistent with click-based advertising and display-based advertising revenue, as described above.

We provide an online marketplace that allows travelers to research and book tours, activities and attractions in popular travel destinations across the globe through our stand-alone Viator-branded platform, which includes website, mobile web, and mobile app. Through Viator, we also power traveler bookings of tours, activities and attractions on behalf of third-party distribution partner websites, including the Tripadvisor platform as well as many of the world’s major OTA, airlines, hotels, online and offline travel agencies, and other prominent content and eCommerce brands.

We work with local tour, activities, and experience operators (“operators”) to provide travelers (“customers”) the ability to book tours, activities and attractions (the “experience”) in destinations worldwide. We generate commissions for each booking transaction we facilitate through our online reservation system, in exchange for certain activities, including the use of the Company’s booking platform, post-booking customer support (24/7) until the time of the experience and payment processing activities as the merchant of record, which is the completion of the performance obligation. These activities are not distinct from each other and are not separate performance obligations. As a result, the Company’s single performance obligation is to facilitate an experience, which is complete upon the time the experience occurs, and when revenue is recognized. We do not control the experience or have inventory risk before the operator provides the experience to our customer and therefore act as agent for substantially all of these transactions under GAAP.

We collect payment from the customer prior to the experience occurring, which includes both our commission and the amount due to the operator. We record our commissions as deferred revenue on our consolidated balance sheet when payment is received, including amounts which are refundable subject to cancellation, until the experience occurs when revenue is recognized. The amount due to the operator is recorded as a deferred merchant

payable on our consolidated balance sheet until completion of the experience, after which payment is made to the operator.

To a much lesser extent, we earn commissions from third-party distribution partners, in this case the customers, who display and promote on their websites the operator experiences available on our platform to generate bookings. In these transactions, we are not the merchant of record, and we generally invoice and receive commissions directly from the third-party distribution partners. Our performance obligation is to allow the third-party distribution partners to display and promote on their website experiences, offered by operators who utilize our platform, and we earn a commission when travelers book and complete an experience on the third-party distribution partner website. We do not control the service or have inventory risk, and therefore act as an agent for these transactions under GAAP. We receive payment prior to the experience date in the majority of these transactions and make payments to the operators after the experience is complete. Our performance obligation is complete, and revenue is recognized at the time of the booking, as we have no post-booking obligations to the customer. We recognize this revenue net of an estimate of the impact of cancellations, which is not material, using historical cancellation rates and current trends. Contract assets are recognized for commissions that are contractually billable contingent upon completion of the experience.

We provide information and services for consumers to research and book restaurants through our dedicated online restaurant reservations platform, TheFork. We primarily generate transaction fees (or per seated diner fees) that are paid by our restaurant customers for diners seated primarily from bookings through TheFork’s online reservation system. The transaction fee is recognized as revenue after the reservation is fulfilled, or as diners are seated by our restaurant customers. We invoice restaurants monthly for transaction fees. To a lesser extent, we also generate subscription fees for providing access to certain online reservation management services, marketing analytic tools, and menu syndication services. Our performance obligation is to provide restaurants with access to these services over the subscription period, which generally is one-month, and we recognize revenue once our performance obligation is met and invoice restaurants monthly for these subscription services.

We expense costs to obtain a contract as incurred, such as sales incentives, when the amortization period would have been one year or less.

We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

We disaggregate revenue from contracts with customers into major products/revenue sources. We have determined that disaggregating revenue into these categories achieves the disclosure objective under GAAP, which is to depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. As noted in “Note 19: Segment and Geographic Information” our business consists of three reportable segments – (1) Tripadvisor Core; (2) Viator; and (3) TheFork. A reconciliation of disaggregated revenue to reportable segment revenue is included below.


	Year ended December 31,
	2022			2021			2020
Major products/revenue sources (1):	(in millions)
Tripadvisor Core
Tripadvisor-branded hotels	$	650		$	451		$	292
Tripadvisor-branded display and platform		130			98			69
Tripadvisor experiences and dining (2)		134			70			65
Other		52			46			57
Total Tripadvisor Core		966			665			483

Viator		493			184			55
TheFork		126			85			86
Intersegment eliminations (2)		(93	)		(32	)		(20	)
Total Revenue	$	1,492		$	902		$	604

(1)

Our revenue is recognized primarily at a point in time for all reported segments.

(2)

Tripadvisor experiences and dining revenue within the Tripadvisor Core segment are shown gross of intersegment (intercompany) revenue, which is eliminated on a consolidated basis. See “Note 19: Segment and Geographic Information” for a discussion of intersegment revenue for all periods presented.

The following table provides information about the opening and closing balances of accounts receivable and contract assets, net of allowance for credit losses, from contracts with customers (in millions):


	December 31, 2022		December 31, 2021
Accounts receivable	$	173	$	105
Contract assets		32		37
Total	$	205	$	142

Accounts receivable are recognized when the right to consideration becomes unconditional. Contract assets are rights to consideration in exchange for services that we have transferred to a customer when that right is conditional on something other than the passage of time, such as commission payments that are contingent upon the completion of the service by the principal in the transaction. The difference between the opening and closing balances of our contract assets primarily results from the timing difference between when we satisfy our performance obligations and the time when the principal completes the service in the transaction.

During the year ended December 31, 2021, bad debt expense recorded to our allowance for expected credit losses on accounts receivable and contract assets decreased by $14 million, when compared to the same period in 2020, primarily due to improved collection trends with our customers driven by the ongoing travel industry recovery from COVID-19 during that year.

Contract liabilities generally include payments received in advance of performance under the contract, and are realized as revenue as the performance obligation to the customer is satisfied, which we present as deferred revenue on our consolidated balance sheet. As of January 1, 2022 and 2021, we had $36 million and $28 million, respectively, recorded as deferred revenue on our consolidated balance sheets, of which $34 million and $23 million, respectively, was recognized in revenue and $2 million and $4 million was refunded due to cancellations by travelers during the years ended December 31, 2022 and 2021, respectively. The difference between the opening and closing balances of our deferred revenue primarily results from the timing differences between when we receive customer payments and the time in which we satisfy our performance obligations. There were no significant changes in contract assets or deferred revenue during the years ended December 31, 2022 and 2021 related to business combinations, impairments, cumulative catch-ups or other material adjustments.