Salary for services like accounting, IT, human resource, provided by the head office of a company to its branch offices in other states will attract 18 per cent GST. According to an order passed by the Karnataka bench of the Authority for Advance Ruling (AAR), the activities between two offices is treated as supplies under the GST law. It said the valuation of supply will include all costs, including the employee cost provided by one distinct entity to the other distinct entities. "The activities performed by the employees at the corporate office in the course of or in relation to employment such as accounting, other administrative and IT system maintenance for the units located in the other states as well i.e. distinct persons as per Section 25(4) of the Central Goods and Services Tax Act, 2017 (CGST Act) shall be treated as supply as per Entry 2 of Schedule I of the CGST Act," the AAR said.