maturity date

date when something must be paid (i.e. a loan, bill, etc.)

Maturity date is a finance term referring to the date when a principal amount of a note, draft, acceptance bond, or other debt instrument becomes due or payable. It is also a termination or due date on which an installment loan must be paid in full. For example, a bond due to mature on January 1, 2010, will return the bondholder's principal and final interest payment when it reaches its maturity date.
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Noun
1. the date on which a financial obligation must be repaid
(synonym) maturity, due date
(hypernym) date, day of the month

Usually used for bonds. Date that the bond finishes and is paid off. Date on which the principal amount of a note, draft, acceptance, bond, or other debt instrument becomes due and payable.