For companies operating hotels, motels, guesthouses and other accommodation facilities in Türkiye, the Tourism Operation Certificate (Turizm İşletmesi Belgesi) is not merely a quality or classification certificate held by the business. The certification process is directly related to the facility’s operating licence, the legal status of the property, its scope of activity, its physical characteristics and the business’s compliance with applicable legislation.   In particular, the increasing inspections of accommodation facilities in recent years, together with stricter sanctions concerning the online advertising, marketing and sale of accommodation facilities operating without the required certificate, have made legal compliance even more important for hotel businesses.   So, how can a hotel obtain a Tourism Operation Certificate? Which documents are required for the application? Is an Opening and Operating Licence (İşyeri Açma ve Çalışma Ruhsatı) sufficient? Can reservations be accepted through Booking, a website or social media without obtaining the certificate?..