Home > Personal > Personal Lending > Mortgage > Mortgage Resources > Glossary > Maturity Maturity November 9, 2021 The date on which the principal balance of a financial instrument becomes due and payable.You Might Also Like: Living QuartersMortgage Lending for Veterans at Bank Five Nine All Things CommunityReviewing Random Acts of Kindness 2023 Everyday MoneyWhat are ACH Payments and How Do They Work? Living QuartersUnderstanding Mortgage Interest Rates Family MattersFun Games to Teach Kids About Money