Editor's Note: Expectations for a June rate hike by the Bank of Japan continue to rise. The market currently predicts a relatively high probability that it will raise its short-term policy rate from 0.75% to 1%; if implemented, Japan's borrowing costs would reach their highest level since 1995.

The core factor driving the heightened expectations for this rate hike is inflationary pressure stemming from rising energy prices. Tensions in the Middle East are pushing up global oil and gas costs, and Japan, highly dependent on energy imports, is facing the risk of continued pass-through of corporate costs to consumer prices.

This places the Bank of Japan in a delicate position. On one hand, rising wholesale inflation and an increase in hawkish comments from central bank officials indicate policymakers' growing concern about inflation remaining above the 2% target for an extended period. On the other hand, a further escalation of conflict in the Middle East could trigger market turmoil and weigh on economic growth.

For the Bank of Japan, a June rate hike would not only be a response to inflationary pressures but also a significant step in continuing its monetary policy normalization after ending long-term easing. The real variables going forward will be whether the energy shock can be contained and whether geopolitical risks might change the central bank's judgment at the last moment. In other words, whether the Bank of Japan can raise rates to 1% in June will depend simultaneously on three factors: inflation trends, energy prices, and the situation in the Middle East.

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Key Takeaways

· The Bank of Japan is expected to raise interest rates to 1% in June.

· Rising energy costs are intensifying Japan's inflation concerns.

· Escalation of the Middle East situation could disrupt this rate hike plan.

· Provided the Middle East conflict does not sharply escalate, the Bank of Japan is expected to raise its benchmark interest rate to 1% at its policy meeting on June 15-16. The rationale for tightening monetary policy is strengthening as rising energy costs push inflation higher.

Bank of Japan Signals June Rate Hike

According to market estimates, investors currently assign an approximately 80% probability that the Bank of Japan will raise its short-term policy rate from 0.75% to 1%. If this decision is approved, Japan's borrowing costs would reach their highest level since 1995.

This expectation has intensified due to a series of hawkish signals recently released by Bank of Japan officials. Among them, Bank of Japan Governor Kazuo Ueda stated on Wednesday that the central bank is shifting its policy focus toward curbing inflation. Analysts believe this statement strongly suggests policymakers are preparing to proceed with another rate hike.

A source familiar with the Bank of Japan's thinking said: "Unless the conflict escalates severely, the Bank of Japan is highly likely to raise rates in June."

Two other informed sources expressed similar views, stating that despite rising geopolitical uncertainty, current economic conditions still support further rate hikes.

Energy Shock Intensifies Inflation Concerns

Renewed conflict surrounding Iran has pushed up global energy prices, increasing pressure on Japan, an import-dependent economy. Policymakers are concerned that rising fuel costs may prompt businesses to pass on higher costs to consumers, thereby further driving up inflation.

Recent data showing a significant rise in Japan's wholesale inflation has further intensified these concerns. Bank of Japan officials worry that if cost increases persist, consumer inflation could remain above the central bank's 2% target for longer than previously expected, thereby reinforcing market expectations for a Bank of Japan rate hike in June 2026.

Bank of Japan board members Yukio Hasegawa and Junko Oeda have both recently warned that price pressures are rising, signaling support for tightening monetary policy. Their statements indicate an increasingly strong consensus within the decision-making layer that inflation risks now outweigh concerns about slowing economic growth.

Since ending its decade-long stimulus program in 2024, the Bank of Japan has raised rates several times. Officials believe that after years of weak price growth, Japan is now closer to achieving a stable, long-term inflation target.

Middle East Conflict Remains Key Risk

Although market expectations for a Bank of Japan rate hike in June 2026 are heating up, policymakers are still closely monitoring developments in the Middle East before making a final decision.

Sources said Bank of Japan officials will continuously assess market conditions and the conflict's impact on the economy until the last moment. The central bank's plans could change if the situation escalates significantly, triggering market turmoil or threatening economic stability.

This conflict presents a dilemma for policymakers: rising energy prices push up inflation on one hand, but also weigh on economic activity on the other. Japan, still heavily reliant on imported fuel, is particularly vulnerable to disruptions in the global energy market.

The bond market has already reacted to inflation concerns. As investors increased bets on the Bank of Japan further tightening monetary policy, Japanese government bond yields surged to near 30-year highs last month.

For now, however, the overall evidence still points toward another rate hike by the Bank of Japan. This reflects the central bank's growing conviction that inflationary pressures are becoming more entrenched, requiring a more forceful policy response.