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How have UK, EU and US watchdogs judged hidden booking sites and same-price rules?

Research question: How have competition authorities (for example the UK CMA, the European Commission, or the US FTC) assessed opaque or anonymous booking channels and related parity clauses in their published decisions?

Authorities have mainly assessed parity clauses rather than opaque channels. The UK CMA's 2010-2014 review focused on restrictions that stopped OTAs from offering discounted room prices 1, and Germany's Bundeskartellamt prohibited HRS's parity clause in 2013 4 and Booking.com's best price clauses in 2015 19. Some authorities accepted narrower remedies: the French, Italian and Swedish agencies accepted Booking.com's move from wide to narrow parity in 2015 instead of imposing a ban 23. The FTC's 2017 report is the only source here on opaque channels, warning that third-party ads and pages that do not disclose the marketer's identity can lead consumers to believe they are booking directly with a hotel 11, and recommending a ban on misrepresenting affiliation rather than blanket disclosure rules 14. The newest fact is from 2026 and finds that restricting only wide parity reduced hotel prices by 3.2%, against 6.9% for a full ban 24, though the facts give no month.

Checked 2026-10-20. Only documented and supported facts are used.
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Sources

[1] documented
The UK CMA (formerly OFT) investigated the online hotel booking sector between 2010 and 2014, focusing on restrictions preventing OTAs from offering discounted room prices rather than parity clauses.
"The OFT (now CMA) also investigated the online hotel booking sector between 2010 and 2014, though its case focussed not on OTA parity clauses but on restrictions on the ability of OTAs to offer discounted room prices."
REPORT ON THE MONITORING EXERCISE CARRIED OUT IN THE ONLINE HOTEL
[2] supported
In France, Article 133 of the Loi Macron rendered all OTA price parity clauses null and void, though this provision relies on private enforcement.
"Article 133 of the Loi Macron renders null and void all OTA price parity clauses, but this provision relies on private enforcement."
REPORT ON THE MONITORING EXERCISE CARRIED OUT IN THE ONLINE HOTEL
[3] documented
In Austria, all OTA parity clauses were rendered null and void by an amendment to the law on unfair competition in November 2016.
"in Austria, in November 2016, all OTA parity clauses were rendered null and void by an amendment to the law on unfair competition."
REPORT ON THE MONITORING EXERCISE CARRIED OUT IN THE ONLINE HOTEL
[4] documented
The German Bundeskartellamt prohibited HRS's parity clause in December 2013.
"The German Bundeskartellamt's decision prohibiting HRS's parity clause was adopted in December 2013."
REPORT ON THE MONITORING EXERCISE CARRIED OUT IN THE ONLINE HOTEL
[5] documented
Members of Booking.com's voluntary preferred partner programme are required to give Booking.com narrow parity, even in France where the Loi Macron has rendered such contractual obligations null and void.
"Members of Booking.com's voluntary preferred partner programme must give Booking.com narrow parity, even though the Loi Macron has rendered parity obligations in contracts between OTAs and hotels null and void."
REPORT ON THE MONITORING EXERCISE CARRIED OUT IN THE ONLINE HOTEL
[6] supported
The UK CMA issued an update on 20 August 2020 regarding its monitoring of online travel agent pricing practices.
"On 20 August 2020, the CMA issued an update in its project monitoring the pricing practices of online travel agents, following the expiry of commitmen..."
CMA announces voluntary extension to parity commitments by Booking.com and Expedia
[7] documented
The CMA decided not to prioritize further investigation into pricing practices in the hotel online booking sector following the ECN report.
"the Competition and Markets Authority (CMA) has decided not to prioritise further investigation on the application of competition law to pricing practices in this sector at this stage."
update 6 april 2017
[8] documented
The ECN monitoring exercise involved the CMA, 9 other national competition agencies, and the European Commission.
"The CMA took part in the monitoring work, along with 9 other national competition agencies and the European Commission."
update 6 april 2017
[9] documented
Expedia and Booking.com removed 'wide' parity clauses from their standard contracts with hotels in July 2015.
"the project assessed whether the Europe-wide removal, in July 2015, by online travel agents (OTAs) Expedia and Booking.com of certain ‘parity’ or ‘most-favoured-nation’ clauses in their standard contracts with hotels has affected pricing and commission rates in the sector."
update 6 april 2017
[10] supported
Many hotels were unaware that Booking.com and Expedia no longer enforced 'wide' parity clauses.
"one of the key findings in the ECN report is that many hotels are not aware that Booking.com and Expedia no longer enforce ‘wide’ parity clauses or of what this means for hotels’ ability to differentiate their prices across OTAs."
update 6 april 2017
[11] documented
The FTC identified that third-party search ads and webpages lacking transparency about the marketer's identity can mislead consumers into believing they are booking directly with a hotel rather than through a reseller.
"The Commission shares the concern that third-party search ads and webpages that are not sufficiently transparent about the marketer’s identity could mislead consumers seeking to book a hotel roo m directly from an advertised hotel."
The Online Hotel Booking Market Federal Trade Commission Report to Congress I.
[12] documented
The FTC noted that consumers misled into thinking they are booking directly with a hotel may incorrectly assume that payment and cancellation terms match those of the hotel, potentially leading to uninformed purchase decisions if the reseller's terms differ.
"Additionally, consumers who believe they are booking their hotel room directly from the advertised hotel rather than from a reseller may take away from the reseller’s representations or omissions that important terms and conditions, such as payment or cancellation requirements, are the same as if they booked their rooms directly from the hotels."
The Online Hotel Booking Market Federal Trade Commission Report to Congress I.
[13] documented
The FTC cited a precedent where it settled with online ticket resellers who used names and URLs mimicking genuine venue names to create the false appearance of being official venues.
"In an analogous fact pattern, the FTC entered into settlements with online ticket resellers for allegedly misrepresenting that they were official entertainment venues offering tickets at face value. These companies designed search engine advertisements and corresponding websites that used names and URLs mimicking genuine venue names, combined with other words, phrases, and depictions, to make it a"
The Online Hotel Booking Market Federal Trade Commission Report to Congress I.
[14] documented
The FTC recommended against legislation requiring all third-party sellers to affirmatively disclose they are not the hotel, arguing instead that the law should prohibit entities that misrepresent their affiliation, to avoid undue burdens on legitimate businesses.
"The Commission recommended, however, that the bill be modified to ensure that it did not impose undue burdens on legitimate businesses or unintentionally exclude the types of sites it was intended to cover. The Commission noted that mainstream third-party travel agencies generally did not generate the kind of deception addressed by the bill; therefore, it recommended that, rather than requiring al"
The Online Hotel Booking Market Federal Trade Commission Report to Congress I.
[15] supported
Following recent investigations by several EU Member States into online travel agencies, there is a general view in the EU that wide-form MFN (parity) clauses violate competition law.
"From recent investigations by several Member States on online travel agencies (OTAs) there emerges a general view in the EU that agreements including MFN clauses in their wide form violate competition law, whereas there is no unanimous approach to the narrow version of the same clauses."
Parity Clauses and Competition Law in Digital Marketplaces: The Case of Online Hotel Booking (2016)
[16] supported
EU national competition authorities have reached important decisions on parity clauses adopted by leading online travel agencies such as Booking.com and Expedia.
"In the past years, EU national competition authorities (NCAs) have reached important decisions on parity clauses adopted by leading online travel agencies (OTAs) such as Booking.com and Expedia."
On the Economic Effects of Price Parity Clauses - What Do We Know Three Years Later? (2018)
[17] supported
Authorities have not reached a unanimous approach to narrow-form MFN (parity) clauses, unlike the wide form.
"whereas there is no unanimous approach to the narrow version of the same clauses."
Parity Clauses and Competition Law in Digital Marketplaces: The Case of Online Hotel Booking (2016)
[18] supported
Booking.com controlled almost 60% of the online tourist accommodation booking market in the EU, and most online sales went through OTAs.
"The majority of these online sales took place through OTAs, with Booking.com controlling almost 60% of the market."
On the Economic Effects of Price Parity Clauses - What Do We Know Three Years Later? (2018)
[19] documented
Germany's Bundeskartellamt prohibited Booking.com from applying its best price clauses and ordered their deletion from contracts and general terms for hotels in Germany.
"On 22 December 2015 the Bundeskartellamt prohibited Booking.com from applying its BPCs and ordered the company to delete them from its contracts and General Terms and Conditions by 31 January 2016 as far as they affected hotels in Germany."
HOTEL RESERVATIONS VIA ONLINE TRAVEL AGENCY BOOKING.COM. EU DIMENSIONS OF THE “BEST PRICE” CLAUSE (2019)
[20] supported
Parity clauses require hotels to set their lowest room prices on an online travel agency's website, and they have come under recent scrutiny from antitrust regulators.
"These restrictions require a hotel to set its lowest prices for a given room on a travel agency's website and have come under recent scrutiny by antitrust regulators."
Broad and narrow price parity agreements: Evidence from European hotels (2026)
[21] supported
The use of commitments decisions by many national competition authorities, together with the application of Article 101 TFEU to these online hotel booking cases, raises controversial questions.
"The application of Article 101 TFEU to these cases and the use of commitments decisions by many NCAs raise controversial questions."
Parity Clauses and Competition Law in Digital Marketplaces: The Case of Online Hotel Booking (2016)
[22] supported
Competition authorities around the world have become increasingly concerned about the anticompetitive effects of price parity clauses, especially in markets dominated by few players.
"Competition authorities around the world are increasingly concerned about the anticompetitive effects of these clauses, especially in markets dominated by few players."
On the Economic Effects of Price Parity Clauses - What Do We Know Three Years Later? (2018)
[23] supported
In 2015, the French, Italian and Swedish competition agencies accepted Booking.com's commitment to move from wide to narrow price parity clauses instead of imposing a ban.
"In 2015, the French, Italian and Swedish national competition agencies, after investigating Booking.com, accepted its commitment to switch from wide to narrow price parity clauses"
HOTEL RESERVATIONS VIA ONLINE TRAVEL AGENCY BOOKING.COM. EU DIMENSIONS OF THE “BEST PRICE” CLAUSE (2019)
[24] documented
In European policy changes, restricting only the broadest form of parity clauses while leaving a narrower version in place reduced hotel prices by 3.2%, whereas a complete ban on parity clauses reduced prices by 6.9%.
"Our analysis finds that (i) restricting the broadest form of parity clauses, but leaving in place a more limited version, reduced prices by 3.2%; (ii) a complete ban on parity clauses reduces prices by 6.9%."
Broad and narrow price parity agreements: Evidence from European hotels (2026)
[25] supported
A 'wide' price parity clause bars hotels from charging lower prices on any alternative channel, including rival OTAs and direct booking, whereas a 'narrow' clause only bars lower prices on the hotel's direct channel.
"A "wide" price parity clause requires that the price charged by the hotel on the OTA cannot be reduced when selling via alternative channels, including rival OTAs and direct selling."
HOTEL RESERVATIONS VIA ONLINE TRAVEL AGENCY BOOKING.COM. EU DIMENSIONS OF THE “BEST PRICE” CLAUSE (2019)
[26] supported
The price reductions appear to be driven by increased competition between online travel agencies and by competition between OTAs and hotels' own direct booking channels, according to suggestive evidence.
"we provide suggestive evidence that both increased inter-OTA competition, as well competition between OTAs and hotels' direct channels, played a role in reducing prices."
Broad and narrow price parity agreements: Evidence from European hotels (2026)
[27] supported
The UK and German national competition authorities started the process of abolishing Booking.com's best price clause.
"National Competition law authorities in UK and Germany started the process of abolishing the “best price” clause."
HOTEL RESERVATIONS VIA ONLINE TRAVEL AGENCY BOOKING.COM. EU DIMENSIONS OF THE “BEST PRICE” CLAUSE (2019)
[28] supported
Various national competition authorities in Europe agreed that best price clauses could restrict competition between OTAs for commission rates, but reached different assessments and decisions.
"Various National Competition Authorities in Europe agreed that best price clauses could restrict competition between OTAs for commission rates, but eventually arrived at different assessments and decisions"
HOTEL RESERVATIONS VIA ONLINE TRAVEL AGENCY BOOKING.COM. EU DIMENSIONS OF THE “BEST PRICE” CLAUSE (2019)