Cost. A GmbH requires €35,000 in share capital (though only €17,500 needs to be paid up at incorporation). Notary fees, legal costs, and registration run from €3,000 on top of that:
see more. This is not a €300 setup.
Speed. Forget same-day incorporation. The notarial process, court registration, and tax registration typically take 4–8 weeks. If you need a company next Tuesday, Austria is not your answer.
Bureaucracy. Austrian administrative culture is thorough. Documents need to be certified, translated, apostilled. The process is manageable but not frictionless.
Language. Most official processes are in German. You need either fluency or a reliable local partner to navigate them.