Japanese Bond Yields Hit 30-Year High Amid Global Sell-off

Japanese 10-year government bond yields reached 3% on September 1, 2026, marking a three-decade high. This surge is part of a broader global bond sell-off that pushed borrowing costs to multi-year highs in the United States, United Kingdom, and Germany. The volatility is driven by rising oil prices following renewed conflict between the U.S. and Iran, widening budget deficits in major economies, and increased corporate borrowing to fund artificial intelligence projects.

Scott Bessent, the U.S. Treasury Secretary, has intensified pressure on the Bank of Japan to raise interest rates to stabilize the yen, which has hovered around 160 per dollar despite a record $96.4 billion intervention by Japan over the past month. Bessent coordinated these efforts with Japanese officials during a G20 summit in North Carolina. To contain rising yields domestically, the U.S. Treasury doubled its buybacks of long-dated Treasuries in August.

Simultaneously, Federal Reserve Chairman Kevin Warsh signaled that U.S. inflation is not slowing meaningfully, leading markets to price in a potential rate hike on September 16. This hawkish stance has triggered a ripple effect, increasing risk premiums on emerging market dollar bonds and pushing U.S. 10-year Treasury yields to 4.78%. Investors are now closely monitoring the Bank of Japan's September 18 policy decision, with many expecting back-to-back rate hikes to restore market confidence and combat inflationary pressures.