Uganda launched the new electronic filing (e-filing) system for presumptive tax in 2013 in Kamplala-based municipalities as a pilot project, but the nation wide coverage of e-tax filling started in 2015. The new online registration of Taxpayer Identification Number (TIN) is avaialble at ura.og.id. It covers online-tax registration for foreign companies. Read more about the earliest project of e-filling tax here: https://www.econstor.eu/bitstream/10419/229418/1/wp2021-017.pdf