Японія на межі кризи суверенних облігацій: DoubleLine попереджає про

DoubleLine portfolio manager Bill Campbell, head of the firm’s Global Sovereign & Emerging Markets team, issued a stark warning in his July 2026 paper titled “Honebuto Shock: Japan Courts a Truss-Like Redux.” His core thesis: Prime Minister Sanae Takaichi’s policy mix is recreating the conditions that triggered the UK’s 2022 gilt crisis—unfunded fiscal expansion colliding with a bond market that no longer trusts the government’s commitment to fiscal discipline .

Campbell’s analysis, amplified in a DoubleLine Perspectives episode, identifies six structural risks that together could trigger a buyers’ strike in the Japanese government bond (JGB) market. Each factor compounds the next, forming what Campbell calls a “vicious cycle” familiar from emerging-market crises but now appearing in a developed economy long considered a safe haven .

The ‘Honebuto Shift’: Abandoning the Primary Balance Target

The June 2026 draft of Japan’s Honebuto (Basic Policy) economic blueprint dropped the consolidation language that had anchored the country’s fiscal framework since 2001 . The binding primary balance (PB) surplus target—Japan’s most credible commitment mechanism for fiscal discipline—was replaced by a looser goal of achieving a “stable decline in the debt-to-GDP ratio” . The PB target was downgraded to a multi-year monitoring indicator rather than a binding constraint .

Campbell argues that markets read this change as permission for indefinite deficit spending . Japanese government bonds (JGBs) reacted immediately: the 10-year JGB yield spiked to 2.88% on July 9, 2026—a level unseen since 1996—while the 30-year traded above 4%. The yen fell past 162 to the U.S. dollar. Markets christened the reaction the “Honebuto shock” .

The Consumption Tax Cut: A Massive Self-Inflicted Revenue Hole

Prime Minister Takaichi is proceeding with a two-year reduction of the consumption tax on food from 8% to 1%, starting April 2027 . This is projected to reduce annual government revenue by roughly 4.4 trillion yen (~$30 billion) . Allianz estimates that this cut, combined with higher defense spending, could push Japan’s debt-to-GDP ratio to 228% by 2050, versus 189% under the current draft budget and roughly 200% in 2025 .

The cut is timed precisely when Japan’s borrowing costs are rising and debt-servicing costs are ballooning, creating a growing hole in the fiscal accounts that must be filled by even more new bond issuance .

The End of Deflation: The ‘Easy’ Era Is Over

During Japan’s deflationary era, high debt was manageable because the Bank of Japan (BOJ) could effectively monetize it and real yields were zero or negative. Japan has now shifted to an inflationary environment with rising nominal growth, but this also means the BOJ is normalizing rates—or being pressured to hike—while the government pursues expansionary fiscal policy .

The BOJ faces a growing risk that any move to tighten policy will be offset by political pressure to support the bond market. Its rate-hike path is increasingly running into conflict with Takaichi’s spending plans . Higher inflation erodes the real value of outstanding debt but simultaneously raises nominal yields, which increases the government’s interest-cost burden on new issuance—the classic “vicious cycle” that Campbell warned about across developed markets .

The U.S.-Japan Currency Intervention: A Temporary Band-Aid

Campbell explicitly describes the joint U.S.-Japan yen intervention in July–August 2026 as a “temporary Band-Aid,” not a solution . The U.S. and Japan conducted a rare coordinated intervention to support the yen, with Treasury Secretary Scott Bessent pledging to do “whatever it takes” and advocating to upsize the Fed’s emergency FX backstop facility beyond the $60 billion cap .

The intervention stabilizes the yen temporarily, but it does nothing to address the underlying fiscal deterioration. Worse, it may enable complacency: the stronger yen reduces immediate import-driven inflation pressure, buying time for more spending without addressing the structural revenue gap .

Bessent’s Fear of a Japanese Treasury Liquidation

There is a broader concern in Washington that Japan—the largest foreign holder of U.S. Treasuries—could be forced to liquidate its holdings to fund domestic interventions or to repatriate capital as JGB yields spike . Bessent has been in direct contact with his Japanese counterpart to calm markets, and the coordinated yen intervention itself was partly motivated by the U.S. desire to prevent a disorderly Japanese unwind of Treasury positions that would spike U.S. borrowing costs .

Reuters notes that the “dark cloud” over U.S. Treasuries has long been the threat that Japan or China might liquidate—and that fear is now acute . If Japan starts selling Treasuries to fund its own debt or FX intervention, it would create a dangerous feedback loop: higher U.S. yields pushing global rates up, which in turn further stresses Japan’s own debt dynamics . Japan holds roughly $1.1 trillion in U.S. Treasury securities .

How This Adds Up to a JGB Buyers’ Strike (The Truss-Like Redux)

Campbell’s Truss analogy is precise. In September 2022, UK Prime Minister Liz Truss announced unfunded tax cuts—the mini-budget—without a credible fiscal anchor. The gilt market revolted, yields surged, and the Bank of England was forced into emergency bond buying. In Japan’s case, the parallel factors line up:

UK 2022 (Truss)	Japan 2026 (Takaichi)
Abandoned fiscal rules	Honebuto drops PB target, shifts to vague debt-to-GDP goal
Unfunded tax cuts	Consumption tax on food cut from 8% to 1% — ~¥4.4 tn revenue loss
BOE tightening cycle	BOJ normalizing rates amid inflation; political pressure to keep yields low
Gilt yields surged	JGB yields already rising; bond jitters overshadowing Takaichi’s blueprint
Market lost faith in fiscal discipline	Creditors have “little tolerance” for unfunded expansion

The result is a slow-motion credibility crisis. Each factor—the lost fiscal anchor, the self-inflicted revenue loss, the end of deflation, the temporary currency fix, and the cross-border Treasury risk—compounds the next. Yields rise, which increases debt service costs, which widens the deficit, which requires more issuance, which pushes yields higher. At some point, domestic institutional investors (Japan’s life insurers, pension funds, and banks) may begin demanding a higher term premium or simply stop absorbing new supply at acceptable rates—the buyers’ strike that Campbell warns is already putting Takaichi “on notice” .