The annual percentage rate (APR) is an interest rate reflecting the cost of a mortgage as a yearly rate. This rate is likely to be higher than the stated note rate or advertised rate on the mortgage, because it takes into account points and other credit costs. The APR allows homebuyers to compare different types of mortgages based on the annual cost for each loan. 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.
The APR does not affect your monthly payments. Your monthly payments are strictly a function of the interest rate and the length of the loan.
Because APR calculations are effected by the various different fees charged by lenders, 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. You can then delete the 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 cheaper loan than the lender with higher loan fees.