Mortgage refinance rates were unchanged with a rate of 6.63% for a 30-year fixed, 5.62% for a 15-year, and 6.34% for a 20-year refinance.The APR for a 30-year fixed rate mortgage refinance is 6.66% compared to 6.86% last week.For a 30-year fixed refinance at an interest rate of 6.63%, the monthly cost would be around $641 per $100,000.On a 20-year mortgage refinance, at an interest rate of 6.34%, the monthly cost would be $736 per $100,000.A 15-year fixed mortgage refinance averages around 5.62%, with a monthly payment of $824 per $100,000 borrowed.For a 15-year fixed-rate jumbo mortgage refinance, the average interest rate is 6.74%, with a monthly payment of $884 per $100,000.Refinance rates are typically slightly higher than purchase loan rates by 0.01% to 0.15% for a 30-year fixed rate.Consider factors like closing costs, discount points, or avoiding mortgage insurance to lower interest rates when refinancing.Refinancing can help lower monthly payments, pay off loans sooner, tap into home equity, or eliminate PMI.It is crucial to calculate the break-even point by dividing closing costs by monthly savings to assess the benefit of refinancing.