The warning from Japan’s bond market goes beyond rising yield – Firstpost

Japan’s bond market is flashing a warning that goes far beyond a simple rise in yields. A sharp selloff in government bonds is exposing deeper concerns about the country’s debt burden, inflation pressures and whether policymakers can continue supporting the economy without unsettling financial markets.

The latest concerns emerged after Prime Minister Sanae Takaichi announced plans for a supplementary budget of around 3 trillion yen ($19 billion) aimed at helping households deal with rising living costs. The spending package is designed to ease pressure from higher energy prices and increased utility expenses, but investors are now questioning how the government plans to finance it.

Japan has spent decades relying on ultra-low borrowing costs, supported by the Bank of Japan’s aggressive monetary easing policies. That environment is rapidly changing. Inflation has returned, interest rates are moving higher, and investors are demanding greater compensation for holding Japanese government debt.

The pressure was visible in bond markets, where Japan’s 10-year government bond yield recently climbed to 2.809 per cent, its highest level since 1996. The 30-year bond yield also moved above 4 per cent, signalling growing concerns about long-term fiscal risks and the possibility of increased debt issuance.

Takaichi has attempted to reassure markets by saying total bond issuance for 2026 will remain unchanged from earlier plans, even as the government rolls out additional support measures. However, investors remain skeptical about whether higher spending can realistically happen without increasing borrowing.

The bond market turmoil also comes at a difficult moment for the yen, which has weakened toward the key 160-per-dollar level. Such levels have previously triggered intervention by Japanese authorities, who remain concerned about excessive currency movements.

Finance officials have said they are prepared to respond if needed, but economists argue currency intervention provides only temporary relief unless the underlying factors behind yen weakness are addressed.

The Bank of Japan now faces a complicated policy challenge. Raising interest rates could help support the yen and control inflation, but it would also increase borrowing costs for a government carrying one of the world’s largest debt burdens.
Despite the market pressure, Japan’s economy continues to show areas of strength. The economy expanded at an annualised rate of 2.1 per cent in the first quarter, while exports jumped 14.8 per cent in April, helped by strong semiconductor shipments and demand linked to artificial intelligence.

The bigger message from Japan’s bond market is clear: investors are not just reacting to higher yields. They are questioning whether the economic model that supported decades of cheap borrowing can survive in a world of higher inflation, rising interest rates and growing fiscal pressures.