Japan core inflation hits four-year low in April but war-driven rebound seen ahead

Japan wholesale prices surge 4.9% as Iran war drives import cost spike

The desk anticipates that Japan's recent surge in wholesale prices will compel the Bank of Japan (BOJ) to consider a more aggressive tightening stance at its upcoming June meeting. Per the full note [source], the corporate goods price index rose 4.9% year-on-year in April, significantly outpacing the 3.0% forecast, driven by a 17.5% spike in import prices and an alarming 83.2% month-on-month increase in naphtha prices. This inflationary pressure, exacerbated by geopolitical tensions in the Middle East, suggests that the BOJ may face mounting pressure to adjust its policy framework sooner than previously anticipated. The current market consensus is increasingly leaning towards a rate hike, reflecting a tightening window for the BOJ to maintain its gradual approach amidst these escalating cost pressures.

Japan April CPI preview: core inflation seen slipping further below BOJ target

Japan: Tokyo area April CPI headline 1.5% y/y (expected 1.7%, prior 1.4%)

The desk interprets the latest Tokyo CPI data as a clear signal that the Bank of Japan (BoJ) is unlikely to accelerate its rate hike plans. Per the full note from Eamonn Sheridan, the April 2026 headline CPI came in at 1.5% year-on-year, missing expectations of 1.6% and reflecting a marginal increase from the prior 1.4%. This subdued inflation data, particularly the core CPI at 1.5%—the slowest since March 2022—provides the BoJ with the necessary leeway to maintain its accommodative stance despite previous signals suggesting a potential hike in June.

ING expects June BOJ rate hike despite softer than forecast Japan CPI

The desk anticipates a Bank of Japan rate hike in June despite April's CPI coming in lower than expected. ING indicates that government subsidies have artificially suppressed inflation figures, and they maintain that underlying price pressures remain strong, with central bank officials signaling a shift towards normalization. Per the full note, headline CPI fell to 1.4% year-on-year, below the market consensus of 1.6% and ING’s forecast of 1.8%. Strong first-quarter GDP growth and robust export data further support the BOJ's potential pivot.