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: 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