Dua for paying Loan and Debt and Dua for wealth,Affluence, Riches, independence from people, well-beingand Dua for Halaal and lawful earning, income,Salary, sustenance, Rizq and Livelihood and Dua for Protection from Poverty, Loan, Debt, Begging, Bankruptcy, unlawful and Haraam earning, income, sustenance and Livelihood

Ali (May Allah be pleased with him) reported: A slave who had made a contract with his master to pay for his freedom, came to me and said: "I am unable to fulfill my obligation, so help me.'' He said to him: "Shall I not teach you a supplication which the Messenger of Allah (sallallaahu ’alayhi wa sallam) taught me? It will surely prove so effective that if you have a debt as large as a huge mountain, Allah will surely pay it for you. Say: 

`Allahumm-akfini bihalalika `an haramika, wa aghnini bifadlika `amman siwaka (O Allah! Grant me enough of what You make lawful so that I may dispense with what You make unlawful, and enable me by Your Grace to dispense with all but You).''
[At-Tirmidhi].
Commentary: It is important to recite this Du`a in order to seek Allah's Help in paying one's debts and in avoiding to beg of people.