Charging of Service Tax is not valid.
The Government in April 2017 issued guidelines on fair trade practices related to charging of Service Charge from consumer by hotel/restaurants. As per these guidelines, Service Charge is optional and payment of it depends entirely upon the discretion of the consumers. An aggrieved consumer can approach a consumer forum of appropriate jurisdiction for redressal of his grievance related to charging of service charges by hotels and restaurants.
Ministry of Consumer Affairs, Food & Public Distribution