The supplementary grant is complementary to the performance grant or the interest bearing loan. The supplementary grant acts as a ‘performance grant’. This means that if a student fails to acquire their diploma within ten years, starting upon receiving the first study grant, the student is required to reimburse the received supplementary grant. Excluding, however, the received supplementary grant of the first five months. Whether the student may request a supplementary grant, depends on that student’s parents’ income and number of studying children they have, as well as some other factors. The website of DUO provides a means of calculating whether you are eligible for a supplementary grant. The supplementary grant encompasses a maximum amount of € 387,92. In case you do not receive the full supplementary grant, you may request a loan for the remaining amount due. Through this mechanism, each student has equal access to an equal amount of study grants.