Mortgage Calculator: Here’s How Much You Need To Buy a $430K Home at a 6.71% Rate, The Highest of the Year

Mortgage rates surged to their highest level in more than a year this week after the global bond market was roiled by a large-scale sell-off fueled by renewed inflation fears related to a fresh round of hostilities in the Middle East. The average rate on 30-year fixed home loans increased to 6.71% for the week ending Sept. 3, up 5 basis points from 6.66% the previous week and the highest since late July 2025, according to Freddie Mac. For perspective, rates averaged 6.50% during the same period in 2025.So what does this mean for homebuyers? Using the Realtor.com® mortgage calculator, we can look at how the math works out for the median-priced home in the U.S.All examples assume a 30-year fixed mortgage and include principal and interest only, excluding property taxes, homeowners insurance, and mortgage insurance.Monthly mortgage payment today with a 20% down paymentFor a homebuyer eyeing the median house price of $430,000, a 20% down payment results in a loan amount of $344,000. At today's 6.71% rate, the monthly principal and interest payment is approximately $2,222. This reflects an $11 monthly increase from the previous week’s payment of $2,211. Compared to the 6.50% average fro...