Top-up fees, also known as tuition fees, are payments made by students towards the cost of their education. However, there are several synonyms for this phrase, including supplementary fees, additional charges, and incremental payments. These terms all refer to the same concept of students paying extra money on top of their standard tuition fees. Other synonyms for top-up fees may also include financial contributions, surcharges, or even investment fees, depending on the context. Regardless of the terminology used, top-up fees typically help to fund academic services and facilities, as well as contribute to the overall quality of education for students.