Japan is spending like there’s no tomorrow, and Moody’s Ratings has essentially responded with a shrug. The agency is maintaining its credit assessment on Japanese sovereign debt despite a fiscal 2026 budget that ballooned to 122.3 trillion yen, roughly $783 billion, and bond market volatility that has investors chewing their nails.

Japan’s fiscal numbers are getting hard to ignore

The new budget represents a meaningful jump from the 115 trillion yen allocated the previous fiscal year. Tucked inside that number is a record defense budget of 9.0353 trillion yen, reflecting Japan’s evolving security posture in a tense geopolitical neighborhood.

Ten-year Japanese government bond yields have surged to around 2.8% as of May 2026, levels that would have been unthinkable just a few years ago when yields were pinned near zero. Longer-dated maturities have crossed 4%.

Japan’s central government debt hit a record 1.343 quadrillion yen by the end of March 2026. That’s approximately $8.58 trillion.

Why Moody’s isn’t flinching, and why that matters

Moody’s has not issued any explicit rating change or formal adjustment in response to the 2026 budget or the bond market fireworks. The agency’s broader Asia-Pacific sovereign outlook remains negative as of June 2026, driven by persistent inflation, slower economic growth, and escalating government debt across the region.

Japan’s debt is overwhelmingly held domestically, which reduces the risk of a sudden foreign capital flight. The yen, despite its fluctuations, remains a major reserve currency. And the Bank of Japan, while it has loosened its grip on yield curve control, still has tools at its disposal.

What this means for crypto and global markets

Rising JGB yields create a steepening yield curve that complicates carry trades. For years, traders borrowed cheaply in yen to invest in higher-yielding assets elsewhere, including crypto. As Japanese yields rise, the cost of borrowing in yen goes up, which can trigger unwinds that suck liquidity out of risk assets globally.

The Bank of Japan’s yield curve control adjustments in late 2022 and 2023 sent shockwaves through global bond markets and contributed to volatility across equities and crypto.

Investors should watch for two signals. First, any shift in Moody’s language from maintaining its current view to placing Japan on negative watch would be a significant escalation. The current negative regional outlook is already a yellow flag, and a Japan-specific downgrade warning could trigger a repricing across global bond markets.

Second, monitor the yen. Currency weakness alongside rising yields is an unusual and uncomfortable combination. If the yen continues to weaken even as yields climb, it could signal deeper concerns about Japan’s ability to manage its debt burden without inflating it away.