The rate on a 30-year fixed refinance increased today.The current 30-year, fixed-rate mortgage refinance rate is averaging 7.12%.For 20-year mortgage refinances, the average rate is 6.93%.Borrowers with a 30-year, fixed-rate mortgage of $100,000 will pay $673 per month for principal and interest.The borrower will pay total interest costs of about $142,369 over the life of the loan.The average interest rate on the 20-year fixed refinance mortgage is 6.93%.For a 15-year fixed refinance mortgage, the average interest rate is currently 6.19% compared to 6.31% at this time last week.The average interest rate for a 30-year, fixed-rate jumbo mortgage refinance is 7.00%.Rates for government-backed loan programs such as FHA and VA mortgage refinances can be lower than a conventional or jumbo refinance.Refinancing your mortgage can make sense if you plan to remain in your home for a number of years.