Rates shown are not available in all states. Assumptions. Conforming loan amounts of $300,000 to $349,999. Single family residence. Refinance loan. Loan to Value of 80%. Mortgage rate lock period of 45 days in all states except NY which has a rate lock period of 60 days. Customer profile with excellent credit. An amount paid to the lender, typically at closing, in order to lower the interest rate. Also known as mortgage points or discount points. One point equals one percent of the loan amount (for example, 2 points on a $100,000 mortgage would equal $2,000). The estimated monthly payment includes principal,