Interest that you will pay is based on the interest rate that you received at the time of loan origination, how much you borrowed and the term of the loan. If you borrow $208,800 at 3.62% then over the course of a 30-year loan you will pay $133,793.14 in interest, assuming you make the monthly payment of $951.65. For a purchase mortgage rate get a quote here. If you are looking to refinance you can get started quickly here.