Japanese Wholesale Inflation Surges to Three-Year High, Driven by Soaring Energy Costs

Price pressures are broadening due to the Middle East situation, with Japan's wholesale inflation in May recording its largest increase in three years, further strengthening the case for the Bank of Japan to implement subsequent interest rate hikes.

The Bank of Japan is set to hold its monetary policy meeting next week. As a weak yen and regional conflicts drive up energy prices, intensifying inflationary pressures, markets anticipate the central bank will raise interest rates again for the first time since last December.

Data released by the Bank of Japan on Wednesday showed the Producer Price Index (PPI) rose 6.3% year-on-year in May, exceeding market expectations of 5.5%. The revised figure for April showed a 5.3% year-on-year increase.

This marks the highest rate of increase since March 2023. The primary drivers were rising prices for non-ferrous metals, chemical products, and petroleum products, fueled by higher crude oil and naphtha costs due to near-total disruptions to shipping through the Strait of Hormuz.

Abhijit Surya, Senior Asia Pacific Economist at Capital Economics, stated: "The continued rise in producer price inflation makes it almost certain that the Bank of Japan will hike rates at next week's meeting."

"We also expect the bank to accelerate the pace of policy tightening thereafter, raising rates approximately every four months."

On a month-on-month basis, wholesale prices increased by 0.9% in May, following a revised 2.8% rise in April.

The persistently weak yen continues to push import prices higher, prompting the Bank of Japan to consider further increases in short-term interest rates from the current low level of 0.75%.

Data shows the import price index in yen terms surged 25.5% year-on-year in May, following a revised 21.0% increase in April, marking the largest year-on-year gain since November 2022.

Boosted by strong demand for AI-related chips, the export price index jumped 20.6% year-on-year in May, partially alleviating the pressure on trade conditions worsened by the energy shock.