As an example, consider a 10 year loan for $250,000 at 8% APR with monthly payments. The monthly payment would be $3,033.19 throughout the duration of the loan. In the first payment $1,666.67 would go toward interest while $1,366.52 goes toward principal. In the final payment only $20.09 is spent on interest while $3,013.12 goes toward principal. An amortization chart for this example is listed below.
