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Germany TIN number guide

Steuerliche Identifikationsnummer (IdNr)​

The Federal Central Tax Office (Bundeszentralamt für Steuern - BZSt) allocates a personal identification number to every registered individual in Germany. This distinct identifier consists of 11 digits and is not generated from personal data (Legal basis: § 139b Abgabenordnung -AO-). It consists of 10 digits plus one check digit.

Steuerliche Identifikationsnummer
Steuerliche Identifikationsnummer
Steuerliche Identifikationsnummer
Steuerliche Identifikationsnummer

Steuernummer​

The tax number, known as "Steuernummer," is a unique identifier crucial for businesses and freelancers in Germany. With a format like "12/345/67890" or "3012034567890," it spans 10 or 11 digits, including the Bundesland code. Acquiring this number involves submitting the "Fragebogen zur steuerlichen Erfassung" to the tax office (Finanzamt). It differs from the tax ID (Steueridentifikationsnummer) or VAT number (Umsatzsteuernummer). Your Steuernummer, not private, must be visible on invoices and in your Impressum. It changes if you relocate to a different area, highlighting its dynamic nature in the business landscape. Stay informed for seamless compliance.

A natural question usually arises on Why do we have both a tax number and a tax identification number? The initial query naturally revolves around the existence of these two distinct numbers, and unfortunately, they are not interchangeable.

Introduced in 2008 for the purpose of modernizing the taxation process, the Steuer-Identifikationsnummer (also known as "Steuer-ID") specifically caters to income tax. It serves as a lifelong companion for each taxpayer, persisting even 20 years after their demise. Unlike the previous tax number, the Tax Identification Number remains constant, even after relocating to a new address.

Over time, the Tax Identification Number is anticipated to supersede the "old" tax number (Steuernummer) in the realm of income tax. The exact validity period of the "old" tax number remains undetermined. However, its obsolescence will become apparent on tax forms when no longer needed. During a transitional phase, it's advisable to furnish both the tax number and the Tax Identification Number in communications with the tax office, streamlining their processes. Stay informed for seamless navigation of tax-related matters.

Umsatzsteuer Identifikationsnummer (USt-ID)​

Businesses engaging in transactions within the European Union's internal market must have a Value Added Tax Identification Number (Umsatzsteuer-Identifikationsnummer or USt-IdNr) for seamless processing.

A valid USt-IdNr is essential for ensuring that these transactions qualify for value-added tax exemption, especially when the counterpart company in another EU member state also holds a valid USt-IdNr.The VAT ID number, is an independent number that is issued to companies by the BZSt in addition to their company's tax number.

Format - 11 digits Eg:DE123456789

Official Database - USt-ID Search

Frequently Asked Questions​

Which tax number goes on a German invoice — Steuernummer, USt-ID, or the new W-IdNr?​

For domestic B2B invoices, you display your Steuernummer (e.g. 12/345/67890) or your USt-ID (format DE + 9 digits) — either satisfies §14 UStG. For intra-EU B2B transactions you must use the USt-ID so the buyer can apply the reverse charge mechanism; the Steuernummer alone is not sufficient for cross-border EU invoices. The personal IdNr (11-digit lifelong individual number) must never appear on business invoices. A new permanent business identifier, the Wirtschafts-Identifikationsnummer (W-IdNr), began rolling out in November 2024 and becomes a mandatory invoice field from 1 January 2027. During the 2025–2026 transition, invoices may legally show the Steuernummer, USt-ID, or both. [1] [2]

What happens to my Steuernummer when I move to a different Finanzamt district, and how do I avoid invoice rejections?​

Your Steuernummer is issued by the Finanzamt responsible for your address, so it changes whenever you move to an area served by a different Finanzamt — even if you stay within the same city. Invoices issued after the move but still carrying the old Steuernummer create a verifiable mismatch that auditors flag during a Betriebsprüfung, potentially triggering denied input-VAT deductions for your customers. To avoid this: notify your new Finanzamt immediately, wait for the new Steuernummer by post (2–6 weeks), then update all invoice templates, your Impressum, and any e-invoicing systems. Your USt-ID and IdNr are unaffected by relocations. The incoming W-IdNr, assigned permanently by the BZSt from November 2024 onward, will eventually eliminate this problem because it does not change with address moves. [3] [4]

What are the exact XRechnung/ZUGFeRD e-invoicing deadlines, and does the mandate apply to foreign sellers?​

The mandate was introduced by the Wachstumschancengesetz (Growth Opportunities Act, March 2024) and covers domestic B2B transactions between VAT-registered businesses established in Germany. Phase 1 (1 January 2025): every German business must be able to receive structured e-invoices (XRechnung or ZUGFeRD 2.1+, compliant with EN 16931). Phase 2 (1 January 2027): businesses with prior-year turnover above €800,000 must also issue structured e-invoices. Phase 3 (1 January 2028): all remaining businesses must issue them. Cross-border B2B transactions (intra-EU or with non-EU countries) are explicitly outside this mandate. Kleinunternehmer (§19 UStG, turnover ≤ €25,000 in the prior year) are exempt from the issuing obligation but must still be able to receive e-invoices. Simple PDFs emailed to customers no longer qualify as legally valid invoices for covered transactions once the issuing deadline applies. For full format and compliance details, see our Germany e-invoicing guide. [5]

Why does the BZSt qualified confirmation (qualifizierte Bestätigung) return a name mismatch for a valid EU VAT number?​

The BZSt offers two levels of USt-ID verification under §18e UStG. The simple check (einfache Bestätigung) confirms only whether the number is currently valid. The qualified check (qualifizierte Bestätigung) additionally compares the trade name, legal form, town, postcode, and street against the database of the issuing Member State. A "does not match" result for the name is common and does not necessarily mean fraud — it reflects minor inconsistencies such as GmbH abbreviated vs. spelled out, umlaut handling (ä vs ae), punctuation differences, or a stale address in the other country's VIES register. The BZSt cannot disclose the registered data; you must ask your partner to supply their exact registered details. Retaining the BZSt confirmation printout gives you legal safe-harbour documentation regardless of outcome. A simple check must always be performed before a qualified one. [6] [7]

Does a Kleinunternehmer need a USt-ID if they sell digital services or goods to EU customers?​

As of 1 January 2025, the Kleinunternehmer thresholds under §19 UStG changed to €25,000 net turnover in the prior year (up from €22,000) and €100,000 net in the current year (up from €50,000). Below these limits, a Kleinunternehmer pays no VAT on domestic sales and needs no USt-ID for purely domestic transactions. The cross-border trap: if total B2C sales of goods or digital services to other EU countries exceed €10,000 in a calendar year, VAT becomes due in each customer's country — and a Kleinunternehmer is not exempt from this EU-wide threshold. At that point they must either register for VAT in each destination country or register for the One-Stop-Shop (OSS) via the BZSt, which requires obtaining a USt-ID first. From 2025 a new EU-KU-Regelung (European small business regulation) also allows German Kleinunternehmer to apply their exemption in other EU states up to a €100,000 EU-wide cap, but registration via the BZSt OSS portal is still required. [8] [9]

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