Today's mortgage refinance rates saw an increase, with a 30-year fixed rate at 6.67% and 15-year at 5.57%.The annual percentage rate (APR) for a 30-year fixed-rate mortgage is 6.71%, offering a cost overview inclusive of fees.At the current rate, a $100,000 30-year mortgage would result in around $131,680 in total interest costs over its lifespan.For a 20-year fixed mortgage refinance, the average rate is 6.39% with an APR of 6.44%.A 15-year fixed refinance mortgage is currently at 5.57%, offering lower interest rates than the previous week.Refinancing can provide opportunities to lower interest rates, monthly payments, pay down loans sooner, access equity, or eliminate PMI.Consider the break-even point for potential refinancing to weigh savings against closing costs.Improvements in credit score or switching to shorter loan terms can help secure competitive rates for refinancing.Having a strategic approach in finding the lowest rates is key when considering mortgage refinance options.Regularly monitoring fluctuating mortgage rates and managing debt-to-income ratio can enhance refinancing prospects.