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When Do I Register as a Freelancer with the Finanzamt?

20 July 2026

Real answers on timing, Steuernummer, and the Fragebogen zur steuerlichen Erfassung.

People ask this constantly on Reddit and DE founder forums: When do I tell the tax office I freelance? The practical answer: as soon as you start earning (or clearly intend to), not after your first big invoice piles up.

The concrete trigger

German practice expects you to notify your local Finanzamt when you begin a self-employed or freelance activity. The usual vehicle is the Fragebogen zur steuerlichen Erfassung, filed electronically via ELSTER. Many guides treat one month from starting activity as the working deadline. Waiting until year-end for a surprise Steuernummer is how freelancers invent avoidable chaos.

You need the Steuernummer (or temporary handling agreed with the office) before clean client invoices. Clients and portals ask for it. Banking and bookkeeping assume it.

What you are actually filing for

The questionnaire is not a hobby form. It is how the office:

  • Opens your tax file and issues a Steuernummer
  • Learns whether you claim Kleinunternehmer status under § 19 UStG
  • Sees your expected Umsatz and Gewinn estimates
  • Can issue a USt-IdNr. if you request one

Underselling expected revenue to look small can backfire when Vorauszahlungen and Krankenkasse later reconcile against real Steuerbescheide. Overshooting wildly can lock you into higher Vorauszahlungen until you correct them. Estimate in good faith; revise when facts change.

A short registration checklist

  1. Confirm Freiberufler vs Gewerbe for your activity (wrong box creates Gewerbesteuer and IHK noise you did not need).
  2. Gather ID, address, bank IBAN, start date, activity description, revenue estimate.
  3. Decide Kleinunternehmer vs Regelbesteuerung before you submit (see our Kleinunternehmer posts).
  4. Submit the Fragebogen in ELSTER; keep the Sendeprotokoll.
  5. Track the case until the Steuernummer letter arrives. Do not invent a fake number on invoices while you wait.

If mail is slow, call or write with your ELSTER confirmation and ask for status. Put the open loop on a calendar with a follow-up date.

HITL note

Draft the questionnaire answers in a quiet hour. Stamp only after you re-read the Kleinunternehmer and Umsatzsteuer sections. A wrong checkbox here echoes into every UStVA and invoice for years.

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