Short Answer
The tax office automatically triggers an informational questionnaire the moment you register your living address at the citizen's office. This document is sent out to determine if you intend to operate as an independent business owner or freelancer.
What Most Expats Don't Realize
You registered your apartment and received a complex form called the "Fragebogen zur steuerlichen Erfassung" just a few days later. You assumed filling it out was mandatory for your standard office job, checked several boxes estimating your potential income, and unwittingly registered yourself as a sole proprietor. The government immediately sent you a prepayment demand for business taxes, causing an unexpected cash outflow of 850 € from your savings account.
What To Do
- Call your company's relocation agent or an advisor to verify the nature of any unexpected tax mail before responding.
- Check the heading of the letter to confirm if it says "Fragebogen zur steuerlichen Erfassung" before attempting to fill it out.
- "Ich bin ein regulärer Angestellter und kein Freiberufler." (I am a regular employee and not a freelancer.) — email this clarification to the tax office if you receive a mistaken commercial assessment.
The Truth
In Germany, the tax man is like a shadow. The moment you exist in the registration system, the Finanzamt knows.