Getting Your Tax ID (Steuer-ID)

Among the numbers German life assigns you, the Steuer-Identifikationsnummer — the Steuer-ID or tax ID — is one of the most important, because your employer needs it to pay you correctly. The good news is that you do not have to chase it: it arrives in the post on its own, once you have registered your address. Understanding what it is and how it differs from the other tax number spares you confusion at a moment when bureaucracy already feels overwhelming. Here is the essential picture.

What the Steuer-ID is

The Steuer-ID is an 11-digit number that identifies you to the German tax system. It is permanent and personal — issued once, yours for life, unchanged even if you move, marry or switch jobs — and every resident has exactly one. It exists so the tax authorities can match your income and tax records reliably across a lifetime, and it is the number most forms and employers mean when they ask for your "tax number" as a newcomer.

How you get it

You do not apply for it separately. It is generated automatically after your first Anmeldung, and a letter containing it is posted to your registered address, usually within two to three weeks. That automatic link is another reason to register promptly: until the Anmeldung is done, the Steuer-ID cannot be issued, and the small chain of admin behind it cannot proceed. Watch your letterbox in the weeks after registering and keep the letter somewhere safe.

What it is for

Its main job is your salary. Your employer needs your Steuer-ID to apply the correct tax to your pay; without it, payroll typically defaults to the highest emergency tax rate, leaving you out of pocket until you supply it. Beyond employment, you will be asked for it when opening some accounts, claiming benefits such as Kindergeld (child benefit), and dealing with the tax office. Give it to your employer as soon as it arrives to avoid being over-taxed.

Steuer-ID versus Steuernummer

This is the distinction that confuses everyone. The Steuer-ID is your permanent personal identifier. The Steuernummer is a separate, different number issued by your local tax office (Finanzamt) in connection with filing tax returns, and it can change if you move between tax-office districts or become self-employed. Employees mainly need the Steuer-ID; the Steuernummer matters more for freelancers and when you file. They are not interchangeable, so check which one a form is actually asking for.

How it relates to your tax class

The Steuer-ID also links you to your Steuerklasse (tax class), which determines how much is withheld each month — a topic we cover in our payslip guide. When you start a job, your employer uses your Steuer-ID to retrieve your electronic tax details, including your class, from the authorities. Making sure your registration details are correct therefore feeds straight through to how much tax comes off your salary, so it is worth getting right from the outset.

If you need it fast or have lost it

Sometimes you need the number before the letter arrives, or you misplace it. You can find it on previous payslips, your annual tax assessment, or other correspondence from the tax office, and you can request it again from the Federal Central Tax Office (the BZSt) or your Finanzamt, which will re-send it by post for data-protection reasons. If a new job is waiting on it, tell your employer it is in progress — they can often start payroll and correct the tax once the number comes through.

For families and children

Children get their own Steuer-ID too, issued automatically around birth or when they are first registered in Germany. You will need each child's number to claim Kindergeld and for childcare and school administration, so keep their letters as carefully as your own. For a family arriving together, expect a small stack of these letters over the first weeks, one per person, all flowing from your registrations.

The Steuer-ID is refreshingly low-effort: register your address, wait for the letter, and hand the number to your employer. Keep it somewhere you can find it, do not confuse it with the Steuernummer, and retrieve it from the BZSt if it goes astray. It is a quiet, permanent fixture of your German life — and getting it into your employer's hands early is the simplest way to make sure your very first payslips are taxed correctly.