Dreaming of paying off a debt signifies returning from a journey. Typically, images of debt represent humiliation, shame, and insults. If you dream that you are repaying your debt, it indicates that you will be able to resolve some issues in your life and restore your honor.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Debt" (page 115).
Paying one's debt in a dream means returning from a journey. In a dream, debts signify humiliation, abuse and insults. If one sees himself paying his debts in a dream, it means that he will reestablish his connection with his relatives, strengthen his blood ties, feed the poor, solve a difficult problem, acquire a better understanding of religious matters, or return from a trip. If one sees himself paying a debt in his dream but could not recognize it in wakefulness, such debts then represent his sins for which he is responsible and answerable whether he committed them knowingly or unknowingly and their consequences will always hunt him unless he repents. Because of that, the person will suffer in this world in the form of adversities, sickness, fines or other worldly losses. Paying a debt or satisfying ajust cause in a dream means feeding a hungry person, reuniting one's family or returning from a journey and returning from a journey in a dream also means satisfying a just cause. (Also See Promise; Tripping)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.