The annual percentage rate (APR) is an interest rate that is different from the rate. It was intended to compare loan programs from different lenders. The Federal Truth in Lending law requires mortgage companies to disclose the APR when they advertise a rate.
The APR does NOT affect your monthly payments. Your monthly payments are calculated using the interest rate and the length of the loan.
The APR is a very confusing number! Even mortgage bankers and brokers admit it is confusing. The APR is designed to measure the "true cost of a loan." It creates a level playing field for lenders. It prevents lenders from advertising a low rate and hiding fees.
If life were easy, all you would have to do is compare APRs from the lenders/brokers you are working with, then pick the lowest one and you would have the right loan. Right? Wrong!
Unfortunately, different lenders calculate APRs differently! So a loan with a lower APR is not necessarily a better rate. The best way to compare loans is to ask lenders to provide you with a good-faith estimate of their costs on the same type of program (e.g. 30-year fixed) at the same interest rate. Then delete all fees that are independent of the loan such as homeowners insurance, title fees, escrow fees, attorney fees, etc. Now add up all the loan fees. The lender that has lower loan fees has a less expensive loan than the lender with higher loan fees.