What Language Certificate Do I Need for German Naturalization?

The Short Answer: You Need a B1 Certificate

For naturalization in Germany, you must prove that you speak and understand German at B1 level. B1 is a stage in the Common European Framework of Reference for Languages (CEFR). It means: you manage independently in everyday situations, can talk about familiar topics, write simple letters, and hold conversations.

Important: You do not need C1. Until October 2025, there was an accelerated naturalization route after three years that required C1. This rule was abolished on 30 October 2025. Today, the standard is clear again: B1 is the requirement for everyone, and the normal residence period is five years.

Which Certificates Are Recognized?

There are several ways to prove your B1 skills. Immigration authorities accept the following certificates:

• German Test for Immigrants (DTZ) with a B1 result
• telc Deutsch B1 (also telc Deutsch A2-B1)
• Goethe Certificate B1
• ÖSD Certificate B1 or another B1 certificate from a recognized exam provider
• Successfully completed Integration Course (with DTZ result B1)
• A German school diploma, a completed apprenticeship, or a degree from a German university

So you don’t necessarily have to take an additional exam. Anyone who has already passed the Integration Course with a DTZ B1 result or attended a German school usually already has the proof they need.

The DTZ: The Most Common Route

The German Test for Immigrants is the best-known test because it concludes the Integration Course. One special feature: the DTZ is one test with two possible results, A2 or B1. So you don’t register for “B1”, you take the DTZ, and the result shows your level.

The DTZ consists of a written and an oral part:

• Listening and Reading are assessed together (45 tasks, 45 points). You achieve B1 with 33 to 45 points, and A2 with 20 to 32 points.
• Writing is assessed based on content, structure, accuracy, and vocabulary.
• Speaking is the oral exam, usually taken in pairs.

For naturalization, your certificate must show B1 in all tested areas.

telc Deutsch B1

The telc B1 exam has a written section (reading comprehension, language modules, listening comprehension, writing) with 225 points and an oral section with 75 points. You must achieve at least 60 percent in each section. Both parts are assessed separately.

Goethe Certificate B1

The Goethe Certificate B1 is modular in structure. It tests four skills: reading, listening, writing, and speaking. Each module is worth a maximum of 100 points, and the passing threshold is 60 points. The big advantage: you can take the modules individually and retake a failed module separately, without having to retake the entire exam.

How to Proceed Step by Step

1. Check your level. Take a free placement test or a practice exam to see where you stand.
2. Study specifically for B1. Review grammar, build vocabulary, and especially practice speaking and writing, since many people lose points there.
3. Choose your exam. DTZ through the Integration Course, or book telc/Goethe B1 directly (for example at a adult education center or exam center).
4. Submit your certificate. Submit your B1 certificate along with the other documents in your naturalization application.

If you want to prepare specifically for the B1 exam, a structured course helps. Our B1 online course prepares you with a real German teacher and an AI trainer for speaking, pronunciation, and letter writing precisely for telc, Goethe, and the DTZ. If you’re starting from scratch, you can also learn the entire A1 to B1 level in our Complete Package.

Are There Exceptions?

Yes. If you cannot take a language exam due to health reasons, disability, or age, the requirements may be relaxed. The authority decides this on a case-by-case basis, usually with a medical certificate.

Conclusion

For naturalization, you need a recognized B1 certificate, most often the DTZ with a B1 result, or alternatively telc B1, Goethe Certificate B1, or a completed Integration Course. C1 is not required. The key step is solid preparation so you pass the exam confidently and can submit your certificate without delay when you apply.