If you’ve borrowed money from anyone other than a good friend or a family member, there’s a good chance you’re paying him or her interest. You may even be paying your friend or family member interest, depending on how long you’re borrowing for and how much they loaned you. That interest that you’re paying may or may not be deductible: a lot depends on what you’re using the money for. Let’s take a closer look at what makes the interest on the money you’ve borrowed eligible for a deduction.