Japanese government bond (JGB) yields have surged, with the benchmark 10-year yield crossing the 3% mark for the first time in 30 years. This rise in yields is attributed to increasing investor concerns about Japan's fiscal health and expectations that the Bank of Japan will further raise its policy rate, which was hiked to 1% in June, the highest in 31 years, with markets anticipating another hike to 1.25% this month. This has led to the government's borrowing costs on a 10-year loan reaching their most expensive rate since September 1996, representing a 2,900% increase in less than five years. The 30-year JGB yield is near all-time highs at 4.19%, with some market participants exclaiming "Dear God!" at the record levels.
The rising yields are prompting a reversal of capital flows, as higher domestic returns entice Japanese investors to bring funds back home. Japan, traditionally a major owner of US Treasuries and a reliable buyer of global sovereign debt, has seen its investors sell 3 trillion yen in overseas debt this year, with pension funds planning domestic bond increases at an 18-year high. While a mass dumping of Japan's $2.4 trillion overseas debt hoard hasn't occurred yet, global fund managers are observing a steady retreat. Yamaguchi Financial Group, a regional financial institution, has already announced plans to sell more of its JGB holdings, having already booked substantial losses in the previous fiscal year due to rapid interest rate increases.
The implications for Japan's economy are significant. The government's debt, projected to reach 1,145 trillion yen ($7.2 trillion) by March 2027, faces escalating debt-servicing costs, which are expected to jump 17.1% to a record 36.64 trillion yen in the next fiscal year. This is based on the Finance Ministry's assumption of a 3.8% rate for calculating interest payments in fiscal 2027, up from 3.0% in the current fiscal year. Economists warn that higher borrowing costs for the government and companies could dampen investment appetite and hinder economic growth plans, with a Mitsubishi Research survey indicating that 33% of large companies see rising interest rates as a downside risk to growth. Japan's debt-to-GDP ratio is projected at 204.4% in 2026, significantly higher than other major economies.
