Other options for financing your studies
Go to students@work to receive more information and advice on 'Working while studying'.
Some banks offer loans specifically designed for students. Probably the best known is the KfW student loan. A student loan must be reimbursed plus interest so that it adds up to a significant amount. However, as terms and conditions of suppliers can considerably vary from one another, you are advised to consult an expert and compare different offers first.
KfW student loan
CHE student loan test
Stiftung Warentest: student loans (2015)
Students in a higher semester can take out an educational loan with the federal government. This type of financial support is a low-interest loan that you can apply for regardless of your income. However, the amount needs to be repaid in full and including interest.
Information by the KfW
Information by the Federal Office of Administration