Do You Need TAXISnet After Getting an AFM in Greece?

Usually, yes — at least if you want to actually use your Greek tax profile online after getting your AFM. The official gov.gr service is not just about issuing an AFM: it is literally the service for the attribution of an AFM and key to a natural person, it asks for the desired username for the Taxisnet code issuance, and it states that the AFM certificate, pass key, and Taxisnet credentials are sent to the registered email. AADE uses the same logic on its side, referring to the delivery of the Authentication Key and the myAADE/TAXISnet online services access codes after successful processing.  That said, not every person who gets an AFM will need to actively use TAXISnet on day one. AADE’s non-resident FAQ says that an adult foreign tax resident is required to file a tax return in Greece only when they acquire Greek-source income, and that someone who merely owns a secondary residence or purchases property or a car in Greece, without Greek-source income, is not required to file an income tax return for that reason alone. But many common digital actions after the AFM stage do require personal TAXISnet or myAADE access, such as issuing a tax registry certificate, changing registry details, filing returns electronically, or sending digital questions through my1521.