Home > Personal > Personal Lending > Mortgage > Mortgage Resources > Glossary > Interest Rate Floor Interest Rate Floor November 9, 2021 The minimum interest rate for an adjustable-rate mortgage (ARM), as specified in the mortgage loan note.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