If you see the percentage of your APR on a loan, you might be wondering what exactly that number means and how it affects your loans, and the total cost of what you are paying. If you have a 30% APR, you will be paying $30 of interest for every $100 of the loan if the loan is 12 months long. Of course, the longer you have the debt, the more money you will be paying to the lender. They want to ensure that they are getting their fees and money back, so the longer they have the money, the more in fees you will owe. An APR of 30% is considered high. Generally, anything above 20% is considered high. If you have a low credit score or are just beginning to build credit, your APR might be higher than other people.