Today, the rate on a 30-year fixed refinance stands at 6.67%, as per the Mortgage Research Center.Rates for 15-year and 20-year financed mortgages average 5.62% and 6.45%, respectively.The average rate for a 30-year fixed-rate mortgage refinance is 6.67%, down 0.17 point from last week.For a 30-year fixed refinance, the APR is currently at 6.7%, lower than the previous week's 6.87%.At an interest rate of 6.67%, a 30-year fixed mortgage refi costs around $643 per month per $100,000.A 20-year fixed refinance mortgage averages 6.45%, with an APR of 6.49%.For a 15-year fixed refinance mortgage, the average interest rate is 5.62%.A 30-year fixed-rate jumbo mortgage refinance dropped to 7.1%, while a 15-year fixed-rate jumbo mortgage refinance is at 6.14%.Refinancing can help lower interest rates, shorten the loan term, and eliminate private mortgage insurance.It's recommended to calculate the break-even point before refinancing to assess savings surpassing closing costs.