To register as a taxpayer, it is necessary to obtain prior registration number of a taxpayer in the RK and the business identification number (BIN). Prior to 2020, the electronic digital signature was handed to the taxpayer against personal signature by the tax authorities. As from 2020, registration as an electronic taxpayer had been abolished, while some tax sevices, such as filing tax declarations, are now available through one window e-government web portal. However, online tax registration of non-residents is currently not available. 