Key Facts
• On August 21, 2025, 10-year government bond yields hit 1.610%, a 16-year high.
• Long-term interest rates apply to loans exceeding one year, with 10-year bonds as the benchmark.
• 10-year bonds are reliable due to high trading volume and low risk.
• Rising rates are linked to Japan-U.S. trade negotiations and potential fiscal risks.
• Reduced Bank of Japan bond purchases have weakened market demand, lowering bond prices.
• Higher long-term rates may increase fixed mortgage rates and fixed deposit interest rates.
• Government borrowing costs rise, potentially limiting funds for public policies.
Summary
On August 21, 2025, Japan’s 10-year government bond yields reached 1.610%, the highest since October 2008. Long-term interest rates, determined by bond yields, are crucial for loans exceeding one year. The 10-year bond serves as a benchmark due to its high trading volume and low risk. Factors driving the increase include progress in Japan-U.S. trade talks, expectations of further Bank of Japan rate hikes, and fiscal risks tied to potential government spending. Reduced bond purchases by the Bank of Japan have also weakened demand, lowering bond prices and raising yields. This rise impacts daily life by increasing fixed mortgage rates and fixed deposit interest rates, while also raising government borrowing costs, potentially limiting public policy funding.
