Data from the Bank of Japan shows that the country's Producer Price Index (PPI), a key measure of input costs for businesses, rose by 2.3% month-on-month, with the March increase also revised upward. This figure exceeded the highest forecast in economist surveys by a full percentage point, marking the largest monthly increase since April 2014, when Japan raised its consumption tax for the first time in nearly two decades. Excluding the impact of the tax adjustment, this represents the most significant surge since 1980.
The data also indicates that Japan's Corporate Goods Price Index increased by 4.9% year-on-year in April, reaching its highest level in 12 years. This trend underscores how conflicts in the Middle East are amplifying inflationary pressures and provides further justification for the Bank of Japan to proceed with interest rate hikes. According to the central bank, the rise was primarily driven by increases in the prices of oil and naphtha, a key petroleum product used in manufacturing plastics and rubber.
Compared to the same period last year, producer prices have climbed by 4.9%, not only setting a three-year high but also surpassing all predictions. These figures reinforce market expectations that the Bank of Japan will resume raising interest rates at its next meeting in June. Policymakers, in a divided vote last month, decided to keep rates unchanged while warning that conflicts in the Middle East could pose upside risks to their inflation assessment.
Takeshi Minami, Chief Economist at Norinchukin Research Institute, noted in a briefing, "The latest data show that price surges are concentrated in petroleum and chemical products, with concerns spreading over potential supply shortages for some commodities. The likelihood of a rate hike at the June meeting is gradually increasing."
On Thursday, an official who had supported the Bank of Japan's decision to maintain rates in April stated that the central bank should raise interest rates as soon as possible, provided there are no signs of economic distress. April marks the beginning of Japan's fiscal year, a critical period for companies to adjust their pricing strategies.
Friday's data suggests that businesses, which had long resisted price increases during previous oil price surges—including after Russia's invasion of Ukraine—may now be starting to pass higher costs on to their customers.
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