The due date, also known as the maturity date, is the established deadline for the repayment of a financial obligation. It is the date by which the borrower is expected to make full payment on a loan or other financial arrangement. This crucial date is typically agreed upon at the time the loan is originated and is an important factor in calculating interest and other fees. As a knowledgeable professor of finance, it is important to understand the significance of the due date in managing financial obligations.