A new FinanzOnline regulation taking effect January 1, 2027, will phase out classic access data for private individuals. Users must transition to ID Austria or utilize electronic identities from other EU member states that meet high security standards.
Starting October 1, 2025, two-factor authentication is mandatory for existing logins. While classic data remains valid until October 1, 2029, tax offices may deactivate it earlier if a user holds an ID Austria. Access via fax will be fully eliminated.
Compliance is critical as the 'Other applications' function is restricted to specific cases. Repeatedly using incorrect transmission methods after a written warning can result in penalties for willful misconduct, with fines reaching up to 700 euros.
