Japan mortgage borrowers increasingly face interest rate and repayment rule uncertainties

A survey by the Japan Housing Finance Agency reveals that 75% of mortgage borrowers in Japan utilize variable interest rate plans. While this remains the dominant choice, there has been a slight shift toward fixed-rate options due to rising interest rates.

Concerns regarding interest rate risks are prevalent, with 47.2% of respondents expressing uncertainty or anxiety about how repayment amounts change when rates rise. Specifically, many borrowers are unfamiliar with the ‘5-year rule’ and the ‘125% rule,’ which are mechanisms used in variable-rate, equal installment repayments to cap monthly payment increases.

Additionally, as construction costs rise, more households are turning to pair loans or income aggregation to increase borrowing capacity. Approximately 38.7% of borrowers use these methods, a figure that rises to nearly 60% among those in their 20s. Experts advise caution regarding the risks of these arrangements, such as potential income loss during maternity leave, divorce, or death, emphasizing the importance of life planning and maintaining emergency savings.