Abstract: The present invention relates to a computer-implemented method for the reporting to the server of location information and time information of an employee within the framework of a tax declaration, in which said method comprises: determining an identity of the employee by means of a mobile device that is associated to said employee; determining said location information of the employee based on a localization of said mobile device, in which the location information comprises a first and a second location; determining time information comprising a first and second period of time by means of said mobile device, in which the employee is subject to a first tax authority linked to the first location during the first period of time and is subject to a second tax authority linked to the second location during the second period of time; registering said location information and said time information on said mobile device; transferring said registered location information and said time information to said server withi