Before you can begin to study in Germany, you have to prove that you will be able to pay for the costs of your stay. Therefore, you will be asked to present a so-called "Proof of Financial Resources." Often, you will have to provide this document already for the visa application, otherwise it will be due when you apply for your residence permit, at the latest.
The amount of funding that you must have at you disposal depends on the duration of your stay and the maximum BAföG rate (German study grant). From winter semester 2024/25 onwards, this amounts to 992 Euro per month in Germany (last updated: July 2024), although if you stay longer than one year, it is enough to prove that you have sufficient funds to pay for your first year in Germany.
In other words: If you are planning to study in Germany for one year or more, you will have to provide a proof of financial resources amounting to at least 11.904 Euro. If you intend to stay for a shorter period, the amount is reduced accordingly.
There are several ways to provide your proof of financial resources: