Naturalization in Berlin for self-employed individuals: Tax documents

For employees, providing proof of income for naturalization applications is quick and easy: three payslips, the employment contract , and that's it. However, freelancers , founders, or managing directors of limited liability companies (GmbHs) living in Berlin will encounter a much more demanding upload section in the online application from the State Office for Immigration ( LEA ) – and terms like "audit report" or "tax clearance certificate" that even entrepreneurs who grew up in Germany have rarely heard of. This article explains which tax documents self-employed individuals actually need for naturalization in Berlin, what's behind them, and how to obtain them most quickly.

Why does the LEA require special documentation from self-employed individuals?

According to Section 10 Paragraph 1 Sentence 1 Number 3 of the Nationality Act (StAG), every applicant for naturalization must be able to secure their livelihood and that of their dependent family without relying on citizen's income or social assistance. For employees, this is demonstrated by their wages. For self-employed individuals, income fluctuates, private and business assets are intertwined, and the authorities can hardly determine from a bank statement what is actually left over for living expenses. Therefore, the State Immigration Office (LEA) requires a package of three complementary tax documents: the tax assessment notice shows past tax information, the audit report shows current tax information, and the certificate of tax compliance confirms your tax reliability. As an applicant, you have a duty to cooperate in this process according to Section 37 Paragraph 1 of the Nationality Act (StAG) in conjunction with Section 82 of the Residence Act (Aufenthaltsgesetz). If one of the documents is missing, the application will generally remain unprocessed until it is submitted.

What is a tax assessment notice and which one is required?

The tax assessment notice is the administrative act by which the tax office determines your income tax for a calendar year, according to Section 155 of the German Fiscal Code (AO). You receive it after you have submitted your income tax return – as a self-employed individual, this is usually mandatory electronically via ELSTER. The LEA ( State Office for Foreign Nationals) requires the most recent tax assessment notice, i.e., the one you received from the tax office. In practice, we often see that applicants can only submit a notice that is two or three years old because their tax advisor has fully utilized the extended deadline. This is legally permissible, but it unnecessarily delays the naturalization process : The processing office will then request more recent figures. Our tip: Plan your naturalization together with your tax advisor and have the return for the previous year submitted well in advance. Skilled workers from the USA , Great Britain , and Canada should also ensure that foreign income – for example, from investment accounts or real estate in their country of origin – is declared correctly, as the LEA will verify your information with the tax office.

What is the audit report and who prepares it?

The audit report is a Berlin form from the LEA (State Office for Economic Affairs and Export Control) that must be completed by a tax advisor, auditor, or tax representative, not by you. Based on your accounting records—such as the business analysis (BWA), the income statement, or the balance sheet—it confirms your current income, expenses, and profits, and whether health and retirement contributions are being paid regularly. You must also attach the supporting documents listed in the form to your application. For the authorities, the report offers a crucial advantage: a professional with personal liability has reviewed the figures. Depending on the complexity of the report, the cost is usually in the mid-three-figure range. Those who have previously worked without a tax advisor face a challenge here, as an advisor unfamiliar with your accounting practices will need time to familiarize themselves with your situation. If you don't yet have a tax advisor, we would be happy to recommend one with whom we regularly collaborate and who is familiar with the LEA 's requirements . Ensure the report is up-to-date: experience shows that a report that is several months old at the time of the audit will result in a subsequent demand for additional payment.

What is a tax clearance certificate and how do you apply for it?

Your local tax office issues a tax clearance certificate, colloquially known as a tax clearance certificate. It provides objective information on whether you have fulfilled your tax obligations, meaning you have submitted your returns on time and paid your taxes, and whether any arrears exist. The certificate reflects your tax status at the time of issue. Because tax data is subject to tax secrecy under Section 30 of the German Fiscal Code (AO), it is only issued to you upon request. For this, you will need the form "Application for a Tax Clearance Certificate," which you submit to the relevant Berlin tax office. The fee is €17.90; specify "naturalization procedure" as the purpose of payment. Further details can be found on the Service Berlin website regarding the tax clearance certificate . If there are tax arrears, the certificate will indicate them – therefore, clarify this before submitting your application, for example, by making a payment or agreeing to a deferral. A negative certificate does not necessarily prevent naturalization , but it generally triggers further inquiries.

What additional documents are required with the application?

In addition to the three tax documents, the LEA (Local Business Registration Office) requires proof of your business activity. Business owners submit their business registration certificate according to Section 14 of the Trade Regulation Act, which can be obtained from the district office where their business is located. If you operate your business as a UG (limited liability) or GmbH (limited liability company), a current extract from the commercial register is required. You can obtain this free of charge via the joint register portal of the German states ( handelsregister.de ); since corporations are entered in the commercial register according to Sections 7 and 10 of the Limited Liability Companies Act (GmbHG), it is always available for UGs and GmbHs. Freelancers such as software developers , translators, or artists , who are not required to register a business according to Section 18 of the Income Tax Act, provide proof of their registration with the tax office and, if applicable, their chamber of commerce registration. A frequent stumbling block in our practice: The business registration certificate or the extract from the commercial register shows an old address or an outdated business purpose. Ensure that all documents are consistent with each other and with the information in the application.

Why is legal representation worthwhile?

Many self-employed individuals upload their documents themselves or rely on general checklists from expat forums. The problem: The LEA ( State Office for Migration and Refugees) doesn't just check if a document is submitted, but whether the tax assessment, audit report, and certificate present a coherent overall picture of a secure livelihood . A loss year after starting a business, a large back payment, or a managing director's salary that barely exceeds the subsistence level must be explained in the application before the caseworker asks for further information. We have overseen hundreds of naturalization applications in Berlin and know which situations typically lead to requests for additional information. We prepare your documents so that they are convincing on the first attempt – and if the LEA fails to make a decision for more than three months without sufficient reason, we will enforce your claim in court with an action for failure to act pursuant to Section 75 of the German Administrative Court Procedure Act (VwGO).

Conclusion

To become a German citizen in Berlin , self-employed individuals need three tax documents: their most recent tax assessment, an audit report completed by a tax advisor, and a tax clearance certificate from the tax office. In addition, they need their business registration or, for limited liability companies (UG and GmbH), a current excerpt from the commercial register. Obtaining these documents early and in a coordinated manner will save you from inquiries and months of waiting. We can help you submit your naturalization application as a self-employed individual completely and convincingly.