What is the minimum duration in months required for language course registration?

For a language course visa (§16f), registration must be for a minimum of 6 months.

#Requirements

• Course duration: 6-12 months (cannot be longer than 12 months)
• Intensity: At least 18 hours per week of intensive course
• Format: In-person classroom (online is mostly not accepted)
• Institution: Officially accredited language school (DSV, Goethe, etc.)

#Will a 3-Month Course Be Rejected?

The consulate heavily scrutinizes course visas. A national visa will not be issued for a 3-month course — instead, a short-term Schengen visa (Sprachferien tourist visa) is required, but approval for that is also difficult with a Turkish passport.

#"First 3 months, then extension" Strategy

Most international students think, "I'll do 3 months, then extend in DE." This does not work:

• The consulate makes its decision based on the initial duration
• To extend in DE, you need to show a valid reason to the Ausländerbehörde
• There is a risk of deportation if rejected

#Practical Plan

If your goal is to study for a master's/bachelor's degree, a university/Studienkolleg visa (§16b) is a more reliable path than a language course visa. With a §16b visa, the course duration is flexible, and the main purpose is academic education.

Related: How to apply for a language course visa · Will I get a language visa if I open a Sperrkonto?