Analysts suggest that U.S. Treasury Secretary Janet Yellen's pointed comments directed at Japan's dovish Prime Minister could help remove political obstacles to a potential Bank of Japan (BOJ) interest rate hike in June, though the impact on the yen remains uncertain.
On Tuesday, Yellen stated her belief that BOJ Governor Kazuo Ueda would "take necessary action" given the government's commitment to central bank independence, a remark interpreted as signaling Washington's desire for further monetary tightening by the BOJ.
In a post on platform X following a meeting with Governor Ueda, Yellen noted Japan's strong economic fundamentals and warned against excessive currency volatility, implying that robust economic growth should support a stronger yen and higher interest rates.
The BOJ's next policy meeting is scheduled for June 15-16. Market pricing currently indicates an approximately 80% probability that the central bank will raise its short-term policy rate from 0.75% to 1.00% at that time.
However, a June rate hike could face opposition from Prime Minister Takaichi Sanae and her dovish aides, some of whom have publicly voiced reservations about further near-term tightening.
Yellen's recent remarks echo her previous stance that BOJ rate hikes could be a tool to address yen weakness. Last October, she urged Prime Minister Takaichi to allow the BOJ to raise rates. Two months later, the central bank increased its policy rate from 0.5% to 0.75%.
Mari Iwashita, Chief Rates Strategist at Nomura Securities, suggested that during her visit to Tokyo last week, Yellen likely conveyed her views on the BOJ to both Prime Minister Takaichi and Finance Minister Tsuyoshi Katayama, thereby increasing the likelihood of a June hike.
"Secretary Yellen's Tokyo visit and her latest comments show that Governor Ueda has Washington's full support on raising rates. If the BOJ can argue that a hike would help curb yen depreciation, Prime Minister Takaichi might agree to it," Iwashita said.
When asked about Yellen's statements, Finance Minister Katayama told a press conference that the government consistently respects the relationship defined by the Bank of Japan Act, which guarantees central bank independence while also requiring the BOJ to cooperate closely with the government on economic policy.
Analysts highlight that a key factor will be whether the BOJ can arrange a meeting between Governor Ueda and Prime Minister Takaichi before Ueda's highly anticipated speech on June 3rd, where he may signal the possibility of a near-term rate increase.
Prime Minister Takaichi and her advisors have publicly expressed caution regarding imminent BOJ rate hikes, arguing that monetary policy should align with the government's efforts to reflate the economy through spending and investment.
The BOJ's June meeting coincides with the government's compilation of a supplementary budget aimed at funding subsidies to mitigate the impact of soaring fuel costs on households, a consequence of the conflict in the Middle East.
Concurrently, signs of economic strain from the Iran conflict are mounting. The conflict has driven up living costs and caused supply disruptions for Japan, an economy heavily reliant on fuel imports from the Middle East.
A source familiar with government-BOJ discussions stated, "The Prime Minister is said to be cautious about further rate hikes, but if pressure from Washington is significant, the government might consent to a June increase."
Concerns over inflation risks stemming from the conflict have triggered a global bond market sell-off, further complicating the BOJ's decision-making.
Beyond setting the short-term policy rate, the BOJ will also assess its bond-buying reduction plan, which runs until March of next year, and formulate a new plan for the fiscal year starting in April 2027 during its June meeting.
Financial market turbulence could force the BOJ to slow the pace of reducing its massive bond holdings, offering some relief to anxious bond investors as rising yields expose heightened fiscal stress and mounting inflationary pressures.
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