BoJ May Accelerate Rate Hike Amid Iran Conflict, Commerzbank Warns

Neutral (-0.2)Impact: Medium

Published on March 31, 2026 (3 hours ago) · By Vibe Trader

Commerzbank’s Volkmar Baur has highlighted that Japan’s inflation outlook remains contained, with core prices still within the Bank of Japan’s (BoJ) 2% target range and no visible second-round effects yet. However, Baur warns that a prolonged conflict in Iran and rising energy costs could force the BoJ to advance its planned June rate hike to April, although this would offer only limited support to the Japanese Yen (JPY) [1].

Baur notes that the weighting for gasoline in the Greater Tokyo Area is 0.5%, lower than for the country as a whole, suggesting that the impact on the national Consumer Price Index (CPI) could be stronger. In March, the inflationary trend in energy prices was masked by persistent disinflationary trends in food prices, with seasonally adjusted prices excluding energy and fresh food rising by 0.18%, still within the central bank’s 2% target range [1].

A new research paper from the BoJ indicates that inflation is stabilizing at 1.5–2%, moving toward the central bank’s target after years of too-low inflation and a recent brief period of too-high inflation. Baur suggests that a short-term rise in energy prices would not dramatically affect the inflation target. He concludes that the BoJ would prefer to leave interest rates unchanged at its next meeting in late April, but if the Iran conflict persists, it is likely the BoJ will bring forward the expected rate hike from June to April. Despite this, the Japanese yen would likely receive only minimal support, as the negative effects of the conflict could outweigh the benefits of higher interest rates [1].

CONCLUSION

Commerzbank’s analysis suggests that while Japan’s inflation remains stable, geopolitical risks from the Iran conflict could prompt the BoJ to accelerate its rate hike schedule. However, any such move is expected to provide only limited support to the yen, as broader negative impacts may dominate. The market is likely to remain cautious, awaiting further developments in the Iran conflict and BoJ policy decisions.

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