[Comparing Purchase-Type Flat 35] Although the product features are the same at all financial institutions, borrowing interest rates and loan handling fees differ by institution As of December 2025, borrowing interest rates for purchase-type Flat 35 range from 1.970% per year to 4.510% per year, depending on the financial institution (for loan terms of 21 years or more and up to 35 years, and a loan-to-value ratio of 90% or less).The most common interest rate is 1.970% per year, which corresponds to the lower end of this range. At financial institutions that adopt a fixed-amount loan handling fee, it is common for an additional 0.1% to 0.2% per year to be added on top of this rate. The highest interest rate is offered by Sumitomo Mitsui Banking Corporation, at 4.510% per year. The bank’s ultra-long-term fixed-rate mortgage loans (loan terms of more than 20 years and up to 35 years) carry interest rates of 3.33% to 4.23% per year, indicating an intention to steer customers toward its own mortgage products. Among the megabanks, MUFG Bank and Mizuho Bank have suspended new Flat 35 offerings, and Sumitomo Mitsui Banking Corporation may also discontinue handling Flat 35 loans in the future. Loan handling fees typically range from about 1% to 2% of the loan amount under the percentage-based fee structure, or several tens of thousands of yen under the fixed-amount fee structure. With the fixed-amount fee structure, it is also common for the borrowing interest rate to be increased by an additional 0.1% to 0.2% per year. Some financial institutions offer preferential loan handling fees if certain conditions are met, such as designating the lender’s own account as the repayment account. It is also important to check whether any such fee discounts are available.