General Secretariat for Information Systems (G.S.I.S.)
General Secretariat for Information Systems (G.S.I.S.)
General Secretariat for Information Systems (G.S.I.S.) – Official tax-related site. Information about G.S.I.S. and a list of online tax services for the citizen and legal entities in Greece.
Link:: http://www.e-oikonomia.gr/