In this picture, a person is holding a naturalization certificate up to the camera. The assurance of naturalization is a milestone on the path to German citizenship.
Published:

February 20, 2024

Updated:

January 30, 2026

Naturalization and assurance of naturalization - What you need to know!

The assurance of naturalization is a decisive milestone on the path to German citizenship. In this blog post, you will learn everything you need to know about this process, from the definition of naturalization assurance to the latest changes introduced by the Naturalization Act 2024.
Written by:
Philipp Donath
LL.M. Business Law
Expertly reviewed by:
Christin Schneider
Expert for Immigration law

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Table of contents

The most important facts in brief

  • The assurance of naturalization confirms that you meet all requirements for German citizenship.
  • During the two-year period of validity, you must actively work towards being released from your previous nationality.
  • It is advisable to make an appointment with the naturalization authority as soon as possible to avoid possible delays.
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What is a naturalization guarantee?

Meaning and purpose

The assurance of naturalization is a formal document issued by the relevant naturalization authority. It confirms that you have fulfilled all the requirements for German citizenship. The only remaining step is your release from your previous citizenship. The validity period of this document is 2 years, with the possibility of extension if the release from the foreign citizenship cannot take place in time.

Duty to cooperate

During the period of validity of the assurance of naturalization, you are obliged to actively cooperate. This means that you must prove that you are making efforts to be released from your current citizenship. These efforts are crucial for the progress of your naturalization procedure.

The naturalization process

Applying for Naturalization and receiving the assurance of naturalization

In order to receive a naturalization certificate, you must contact the relevant naturalization authority and submit all the necessary documents together with your application to Naturalization . The authority will then check whether you meet all the requirements for Naturalization .

Here you will find a checklist to find out all the necessary criteria for the naturalization application.

Fee structure

No separate fee is charged for the naturalization assurance itself. It is part of the naturalization fee of €255. In some cases, a deposit of €191 is required, the remainder is due upon receipt of the naturalization certificate.

Assurance of incorporation Berlin 1
Confirmation of incorporation by the City of Berlin
Confirmation of incorporation Munich 1
Confirmation of incorporation by the City of Munich
Assurance of incorporation Hamburg 1
Confirmation of incorporation by the City of Hamburg

When will I receive my naturalization certificate?

The naturalization certificate in exchange for the assurance of naturalization as soon as you can prove that you have been released from your original citizenship. The exceptions to Naturalization without assurance under the old law are reflected in Section 12 StAG.

Duration and withdrawal

The period of validity is two years. If necessary, it can be renewed and remember to have your foreign passport and the certificate for the naturalization application notarized and the assurance of naturalization translated. Withdrawal is possible if your personal circumstances change and the requirements for Naturalization are no longer met. This includes, for example, the withdrawal of Residence permit or a criminal conviction.

How do I extend a naturalization guarantee?

For the extension, it is necessary that you continue to meet the criteria for Naturalization and actively work on the task of being released from your previous citizenship. It is important to notify the naturalization authority of any changes in your personal circumstances, such as a job change or relocation. This information is crucial for the renewal of your naturalization assurance and will be reviewed again when you receive your naturalization certificate.

Apostille and translations

The correct translation and certification of documents plays an important role in the naturalization process in Germany, especially when it comes to giving up your previous citizenship at the embassy or consulate of your home country. Previously, it was necessary to have naturalization assurances and other relevant documents translated into the language of your home country in order to meet the requirements of the authorities there. This step ensures that all documents are available in the official language and are therefore legally valid.

Another important aspect of this process is the apostille. An apostille is a form of authentication that is internationally recognized and used for public documents to confirm their authenticity. It serves as a bridge between the legal systems of different countries by providing a standardized method of document authentication.

For example, if you need to present your naturalization certificate or birth certificate at the embassy or consulate, the apostille may be required to ensure the authenticity and acceptance of these documents in your home country. The apostille confirms that the signature, seal or stamp on the document was issued by a public person or authority and is therefore legitimate. This process therefore simplifies the international recognition of official documents, including those relevant to the naturalization process.

If translations are required for the process, it is advisable to use certified translators.

Assurance of incorporation RP Darmstadt 1 1
Confirmation of incorporation by the city of Darmstadt
Assurance of incorporation RP Darmstadt 2 1
Apostille for naturalization assurance

Updates and legal changes

The Naturalization Act of 2024

The Naturalization Act of 2024 brought about important changes. It enables faster Naturalization opens up the possibility of multiple citizenship for certain groups. This is a significant development that will make it easier for many people to obtain German citizenship.

Abolition of the assurance of naturalization

One of the most notable changes is the elimination of the need to give up previous citizenship. The modernization of the law provides for the repeal of § 10 para. 1 no. 4 StAG. This marks the end of issuing naturalization assurances as we know them. Instead, the law makes it possible to obtain a naturalization certificate directly, without the previously required proof of renunciation of original citizenship. In addition, there is no need for translations into the language of your home country, as you no longer have to give up your previous citizenship.

By abolishing the assurance of naturalization and offering the direct possibility to Naturalization , a more inclusive approach is pursued that promotes integration and strengthens the naturalized person's ties to Germany, while at the same time preserving their roots and ties to their country of origin.

Haven't received any assurances yet?
You have not yet received a confirmation of naturalization and would like to be naturalized? Then follow the link and take our free test!

FAQ - Questions and answers about the naturalization assurance

An assurance of naturalization is the written confirmation in accordance with § 38 VwVfg that a person will be granted German citizenship. 

To obtain a naturalization guarantee, you had to successfully complete the naturalization process and submit all the necessary documents.

In some cases, renouncing previous citizenship was necessary in order to obtain German citizenship. With the new law, this step is no longer necessary.

With the changes introduced by the Naturalization Act 2024, it is no longer necessary to have the naturalization assurance or other relevant documents translated into the language of your home country. 

The assurance of naturalization is valid for 2 years, with the possibility of extension.

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Philipp Donath
Lawyer & Member of the Management Board
As an experienced lawyer (LL.M.), Philipp Donath brings his extensive legal expertise directly to content creation at Migrando . He is responsible for ensuring that contributions are legally checked and ...