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: Family MattersPreparing Financially for a Baby Everyday MoneyBudget Friendly Ideas for Thanksgiving Everyday MoneySenior Discounts and Savings Everyday MoneyStarting an Emergency Savings Account Living QuartersQuestions to Ask Your Home Inspector