Got a Finanzamt Nachzahlung? Here's what it means and what to do.

What is a Finanzamt Nachzahlung?

A Finanzamt Nachzahlung is a tax back-payment demand from the German tax authority. It means that after processing your annual tax return (Steuererklärung), the tax office has calculated that you owe more than you already paid throughout the year — and they want the difference.

This is one of the most common official letters in Germany. Millions of people receive one every year, and the vast majority are entirely routine. Getting one does not mean you did anything wrong, filed incorrectly, or are under investigation. It simply means your advance payments (Vorauszahlungen) didn't cover your final tax liability for the year.

If you're an employee, this usually happens because your employer withheld taxes based on your salary alone, but you had additional income, deductions, or life changes that affected your final bill. If you're self-employed or freelance, it typically follows your annual filing and reflects the difference between what you paid in quarterly instalments and what you actually owe.

The document you're looking at: the Steuerbescheid

The letter itself is called a Steuerbescheid — an official tax assessment notice. It is a legally binding document, not a suggestion. Understanding its structure will tell you everything you need to know.

Here's what to find:

• The Nachzahlungsbetrag — the amount being demanded. This is usually displayed prominently near the top or in a summary box. This is your number.
• The Fälligkeitsdatum — the payment due date. This is critical. You typically have one month from the date printed on the letter to pay. Not from when you received it — from the date on the document. If the letter sat in your mailbox for a week, that week already counts.
• The tax year it covers — make sure it matches the return you filed. If you filed for 2023 and the letter references 2022, something may need clarifying.
• The Finanzamt's bank details — you'll need their IBAN to make the transfer. Crucially, you must include your Steuernummer (tax number) as the payment reference. Without it, the payment may not be matched to your account and you could be chased for a debt you already paid.

What happens if you miss the deadline

Missing the Fälligkeitsdatum is where things get expensive. Late payment interest (Nachzahlungszinsen) is charged at 1.8% per year under current rules, applied from 15 months after the end of the relevant tax year. On top of that, if you ignore the letter entirely, the Finanzamt can escalate to enforcement — including wage garnishment or asset seizure.

The golden rule: even if you think the amount is wrong, don't ignore the deadline while you figure it out.

What if you think the amount is wrong?

You have the right to contest a Steuerbescheid. The process is called an Einspruch — a formal objection — and you have exactly one month from the date of the letter to file one. You do this in writing, addressed to the Finanzamt that issued the notice, stating clearly that you are filing an Einspruch and briefly explaining why.

You don't need a lawyer to do this. A clear, polite letter referencing your Steuernummer and the Bescheid date is sufficient to start the process.

If you're disputing the amount but want to avoid interest accruing in the meantime, you can pay under protest — known as zahlen unter Vorbehalt. This stops the interest clock while your objection is reviewed.

What if you can't pay the full amount?

Contact the Finanzamt directly and request a Ratenzahlung — a payment plan. This is more straightforward than most people expect. The Finanzamt is not a debt collector; they deal with payment plans regularly, especially for first-time situations or genuine financial hardship. You'll need to explain your situation in writing and propose a realistic schedule.

Don't wait until after the deadline to ask. Request the plan before the due date if possible.

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