What is it and when to act?
ELSTER (Elektronische Steuererklärung) is the official portal for tax returns and business registration. For the self-employed, registering with the Finanzamt via ELSTER is the mandatory first step before issuing any invoice.
Step by step
- Register on
elster.de(activation code arrives by post in about 2 weeks) - Complete the Fragebogen zur steuerlichen Erfassung — state your activity, expected income, and VAT preference
- The Finanzamt issues your Steuernummer — it must appear on every invoice
Common mistakes
I issued invoices before receiving my Steuernummer, writing 'registration in progress'. One client refused to pay until they saw the number. The Finanzamt took 6 weeks. Don't issue invoices before you're officially registered.
I chose the standard VAT scheme (Regelbesteuerung) on €15,000 annual turnover. That meant quarterly VAT returns and extra bookkeeping headaches. For low turnover, the Kleinunternehmerregelung is far simpler.