Last week, a customer submitted a loan application in Cincinnati as they prepared to buy their first home. They checked their credit score and submitted income documents. A few days later, the lender presented the interest rate. Each step in this process illustrates the moment mortgage rates are determined.

First, let's look at the national factors. The yield on 10-year Treasury bonds is the first. This is a benchmark that banks refer to when pricing long-term loan products. When this yield rises, mortgage rates tend to rise as well. The second factor is the Federal Reserve's benchmark interest rate and inflation. Interest rates can be sensitive during weeks when the Fed makes announcements. The third factor is the MBS, or mortgage-backed securities market. This is the market where loan bonds are bundled and sold to investors. If demand in this market increases, the terms of the rates may become more favorable.

On top of this, personal conditions come into play. Credit score, DTI, and down payment ratio are the three factors that determine the final interest rate.

Returning to the story of that customer, their credit score was in the 740 range. Their DTI was around 35 percent. They had prepared a 20 percent down payment. With these conditions, they were offered a 30-year fixed rate. As of July 2026, based on Freddie Mac PMMS, the average rate for a 30-year fixed mortgage is forming in the mid to high 6% range. The 15-year fixed rate tends to move between the high 5% and low 6% range. This customer also contemplated between the two products. Wanting to lower their monthly payment, they chose the 30-year option.

They were also informed about an ARM. During the initial fixed period, a lower rate than the 30-year fixed was offered. However, they were told that the rate could adjust afterward. This customer planned to live in the house for a long time, so they ultimately chose the fixed rate.

I also explained the differences based on credit scores. If their score had been above 760, they might have received slightly more favorable terms. Conversely, if it was around 620, the rates could have been noticeably higher. The exact difference varies by lender and product. Therefore, I recommend getting pre-approved first.

Cincinnati is a relatively stable area in terms of housing prices within Ohio. Since the loan principal is not very large, the impact of rate fluctuations on monthly payments is relatively mild. Still, you should choose your lender carefully.

To summarize what Korean households should prepare:

• Lower credit card usage
• Organize any delinquency records in advance
• Prepare income verification documents
• Compare estimates from multiple lenders

This customer ultimately completed the contract under the desired conditions. We must cautiously watch how rates will move in the future. There is a possibility of fluctuations depending on inflation and Fed announcements. If you are preparing to buy a home in Cincinnati, I recommend organizing your documents and credit status first, just like this customer did.