Japan's government, led by Prime Minister Sanae Takaichi, is preparing a supplementary budget of approximately 3 trillion yen (about $19 billion) to replenish reserves and fund fuel and utility subsidies in response to higher energy costs and the impact of the Iran war [1]. Takaichi stated on May 25 that overall bond issuance for the calendar year 2026 would remain unchanged from the original budget plan, despite the extra spending being financed with deficit-covering bonds [1]. This marks a reversal from her earlier stance that additional spending was unnecessary [1].
Despite assurances from Takaichi, market participants remain skeptical. Experts, including Jesper Koll of Monex Group, argue that it may be difficult to implement the supplementary budget without increasing debt, highlighting that "you cannot increase spending without increasing debt" [1]. The use of a calendar-year time frame for bond issuance, rather than Japan's traditional fiscal year ending March 31, has raised further concerns among analysts, with Koll describing it as a "red flag" [1].
Bond market reactions have been pronounced. The 10-year Japanese sovereign bond yield surged to 2.809% on May 20, its highest level since 1996, following reports of potential new debt issuance to fund the supplementary budget [1]. Additionally, the 30-year yield has climbed above 4%, reflecting heightened worries about fiscal risks and inflation pressures [1]. Louis Chua, equity research analyst at Julius Baer, attributed these concerns to ongoing uncertainty in the Middle East, elevated commodity prices, and rising fuel subsidy outlays [1].
While skepticism persists, not all analysts view the supplementary budget as disruptive. State Street Investment Management remains "structurally bullish on Japan, both on the economy and markets," suggesting some optimism despite the fiscal challenges [1].
CONCLUSION
Japan's supplementary budget and assurances of unchanged bond issuance have triggered skepticism among market participants, leading to a surge in bond yields to multi-decade highs. While fiscal and inflation concerns dominate sentiment, some analysts maintain a bullish outlook on Japan's economy and markets. The market takeaway is heightened caution, with investors closely watching for further fiscal developments.