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 QuartersSpring Maintenance Checklist for Your Home All Things CommunityHoli-days of Giving 2022 Everyday MoneyGiving Back During the Holiday Season Living QuartersYour Top Mortgage Questions Answered Living QuartersHow to Understand Mortgage Language