Home > Personal > Personal Lending > Mortgage > Mortgage Resources > Glossary > P&I P&I November 9, 2021 The monthly principal and interest payment required when repaying a mortgage in accordance with its terms.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