My unmarried daughter is asking if she can use her maaser money to pay her college tuition loans from a g’mach
Thank you for your question.
In general we don’t use maaser money to pay for personal expanses, and college tuition is a personal expense. In fact, even personal mitzvos such as buying oneself a pair of tzitzis or tefillin does not come from maaser money. This that a loan was taken out from a gemach is not really going to change anything here because it is her personla debt that she is paying off and not a donation to the gemach.
In the zechus of mitzva tzedakah, Hashem should help you find your zivug hagun and have ample parnassa for all of your needs
Rema Y:D 249-1