FinanzOnline

What FinanzOnline is

FinanzOnline is Austria’s online portal for tax and financial administration with the tax authority. Individuals can use ID Austria to access the service without a separate initial registration in FinanzOnline. The portal supports electronic submission of employee tax assessments, annual returns, declarations, and applications, and provides information and procedures for businesses, municipalities, tax professionals, banks, and insurers. ID Austria is the standard sign-in and satisfies the legal two-factor authentication requirement; alternative credentials also require two-factor authentication. Other listed sign-in methods include a signature card, FIDO security key, and EU Login. FinanzOnline uses TLS for encrypted access and requires cookies and JavaScript. Data-stream submissions require external software to create XML files matching Ministry structures; the portal does not supply that software. Submissions receive an immediate formal check and a later content check, with results shown in the submission log. The Ministry recommends keeping data-stream packages below 5 MB and at no more than 50 individual declarations for easier checking. Access is free, with web and mobile access listed.