An envelope arrives. It has the logo of the Finanzamt (German tax office) in the top left corner. The text inside is dense, formal, and entirely in German. There is a reference number, a date, and somewhere buried in the paragraphs, probably a deadline.
Most expats freeze at this point. Some put the letter aside and hope it resolves itself. It does not. The good news: most Finanzamt letters are routine and manageable once you know what you are looking at. This guide tells you which letter you have, what it means, what to do, and what actually happens if you do nothing.
The 4-Day Rule You Need to Know First
Before you look at anything else in the letter, look at the postmark date. Not today's date. The postmark.
Under §122 of the Abgabenordnung (AO, Germany's tax code), a letter from the Finanzamt is legally deemed delivered on the fourth day after the postmark date. Your deadline countdown starts from that deemed delivery date, regardless of when you actually opened the envelope.
Here is a concrete example. Letter postmarked 1 September. Deemed delivered: 5 September. If the letter gives you a one-month objection window, your deadline is 5 October. Not 5 November from the day you opened it. Not 30 days from today. 5 October.
This is the most important thing to check first. Many expats lose their right to object simply because they calculated from the wrong date.
The Most Common Finanzamt Letters
Steuerbescheid (Tax Assessment Notice)
A Steuerbescheid is the result of a tax return. It tells you how much tax you owe for the year, or how much you are getting back. It is the most common Finanzamt letter employed expats receive.
Aufforderung zur Abgabe der Steuererklärung (Filing Demand)
This letter means the Finanzamt is requiring you to file a tax return you have not submitted. It is a binding legal demand, not a suggestion.
Mahnung (Payment Reminder)
A Mahnung means you owe tax and have not paid it. This follows a Steuerbescheid you did not act on, or a missed quarterly prepayment.
Einkommensteuervorauszahlung (Advance Tax Payment Demand)
This letter sets quarterly advance tax payments based on the Finanzamt's estimate of your annual income. It is most common for freelancers and self-employed people, but employed expats with significant side income can also receive it.
Lohnsteuerbescheinigung Notice
This letter confirms that your employer has submitted your annual wage statement to the Finanzamt. It summarises your income, tax class, and deductions for the year.
Fristverlängerung Confirmation
This confirms that your request for a deadline extension has been granted and states your new deadline.
The First 5 Minutes After Opening Any Finanzamt Letter
How to Respond
Filing an Einspruch (Objection)
Use this if you disagree with a Steuerbescheid. The Einspruch must be in writing, reference your Aktenzeichen and Steuernummer, state clearly that you are objecting, and explain briefly why. Submit it via ELSTER (Germany's official tax portal at elster.de) or by post to your local Finanzamt. It must arrive within one month of the deemed delivery date.
Requesting a Fristverlängerung (Deadline Extension)
Use this if you cannot file a required return by the deadline. Contact the Finanzamt by phone or in writing before the deadline expires. Extensions are usually granted once for 4 to 8 weeks if requested in advance. They are rarely granted after the deadline has passed.
Paying an Outstanding Amount
Transfer the amount stated in the letter to the Finanzamt's bank account, which is printed in the letter. Use your Steuernummer as the payment reference. Confirm the transfer with your bank before the deadline.
Steuer-ID vs Steuernummer
Two different numbers appear in your tax life in Germany. Most expats confuse them. Finanzamt letters reference one, not the other.
Your Steuer-ID (Steueridentifikationsnummer) is an 11-digit permanent number assigned to everyone registered in Germany. It never changes, even if you move or change jobs. It appears on your Gehaltsabrechnung (payslip) and is used by your employer to report your income to the Finanzamt.
Your Steuernummer is assigned by your local Finanzamt and is used for all direct Finanzamt correspondence. It changes if you move to a different Finanzamt district. Finanzamt letters almost always reference your Steuernummer in the Aktenzeichen field, not your Steuer-ID.
If you are new to Germany and have not yet received a Steuernummer, your employer handles payroll using your Steuer-ID as a temporary measure until one is assigned.
What If You Cannot Read the Letter?
The XpatAI letter scanner is the fastest option. Photograph the letter, and it explains in plain language what the letter says, what it wants, and by when. It works for all common Finanzamt letter types and supports 11 languages.
For complex situations, a large Steuerbescheid you want to challenge, multiple years of unfiled returns, or enforcement proceedings, a Steuerberater (tax adviser) is the right call. Their fees are regulated and are often tax-deductible. A Lohnsteuerhilfeverein (wage tax assistance association) is a cheaper alternative for straightforward employed-expat cases.
Most Finanzamt letters are routine. The ones that are not give you time to act, as long as you calculate your deadline from the right date.
Got a letter right now? Point your camera at it and scan your Finanzamt letter with XpatAI in 30 seconds, free. You get the full explanation in Hindi, English, or 9 other languages: what the letter means, what to do, and by when.