Are you still a student and want to freelance? Then that may affect your student loan. 

If you started your studies before September 2015 | then there is an additional income limit of €14,456 per year. If your income exceeds this amount, you will have to stop your study funding and student travel product. This amounts to €1,200 per month. So most students do not have to worry about this ;). 

Started studying after September 2015 |

The additional earnings limit for 2023 is € 16,121.60. For 2022 it was € 15,828.77. In 2020 and 2021 there was no limit for additional income. For more information, see the DUO website.