Japan’s wholesale inflation surged to 4.9% year-on-year in April, far exceeding the 3.0% economist forecast and nearly doubling March’s revised 2.9%, according to a Bank of Japan (BOJ) report released Friday. The jump was driven by soaring import costs tied to the Iran conflict and the closure of the Strait of Hormuz, which sent crude oil prices sharply higher and pushed the dollar up against the yen.
The corporate goods price index (CGPI) caught markets off guard, but a deeper look reveals yen-denominated import prices climbing 17.5% from a year earlier—almost double March’s 8.0% pace. The war in Iran has disrupted petroleum, petrochemical, and related supply chains, with rising prices for chemicals, metals, and food hitting Japanese manufacturers and retailers hard. For instance, snack maker Calbee switched to black-and-white packaging due to an ink shortage caused by petroleum-derived solvent scarcity, while auto parts makers face surging aluminum and plastics costs, and tech suppliers grapple with helium shortages.
The BOJ held its policy rate at 0.75% at its April 27-28 meeting, but in a 6-3 vote, three board members—Hajime Takata, Naoki Tamura, and Junko Nakagawa—pushed for an immediate hike to 1.0%. The April summary of opinions, released May 11, showed one member calling for the central bank to raise rates “without hesitation” if inflation risks increased. Now, a Reuters poll of 34 economists reveals that 28 expect a rate increase to 1.0% at the June 15-16 meeting, with a further hike to 1.25% projected in the fourth quarter—marking the highest policy rate since 2008.
The prospect of a June hike has immediate implications for crypto markets. Every BOJ rate increase since 2024 has triggered sharp Bitcoin selloffs: the July 2024 move to 0.25% sent BTC from $65,000 to $50,000 in a week, and the January 2025 hike to 0.50% caused a 25% to 31% drop in 20 days. Analysts warn that leveraged yen-funded crypto exposure could once again unwind if the BOJ tightens. With the June meeting approaching and inflation still running hot, traders are bracing for a potential repeat of the pattern.
