What is the difference between interest rate and APR?

Your interest rate is the monthly cost you pay on the unpaid balance of your home loan. An Annual Percentage Rate (APR) includes both your interest rate and any additional cost or prepaid finance charges such as the origination fee, points, private mortgage insurance, underwriting and processing fees (your actual fees may not include all of these items). While your interest rate is the rate at which you will make your monthly mortgage payments, the APR is a universal measurement that can assist you in comparing the cost of mortgage loans offered by different mortgage lenders.