Japan's May Manufacturing PMI Dips to 54.5, Cost Pressure Reaches Three-Year High
Claire Weston
Japan's factories are still expanding but losing momentum — PMI eased from 55.1 to 54.5. The real alarm is on the cost side: raw-material inflation hit its fastest pace in nearly three years, squeezing margins across the sector.
How much did the expansion actually slow?
May's final manufacturing PMI came in at 54.5, down from April's 55.1 — a four-year-plus high — and in line with the flash reading.
In plain terms = factories are still growing, but the throttle eased one notch, from "strong expansion" back to "steady expansion."
Factory output expanded for a fifth straight month, though the pace slowed from April.
Why are export orders actually accelerating?
New export business grew at the fastest clip since May 2021, driven by improving demand from the U.S. and the rest of Asia.
This means → external demand is not the drag — it is the brightest line in the current expansion cycle.
Some firms are also building inventory on purpose; output gains are not purely sales-driven but partly a "stock up now, guard against shortages" move.
How intense is the cost pressure?
Input costs for raw materials rose at the fastest rate since September 2022; output-price inflation hit its highest since October 2022.
The main driver: the Middle East conflict pushing up commodity prices, forcing manufacturers to pass costs downstream.
This reflects a drop in the "quality" of the expansion — volumes are still rising, but profit margins are being compressed.
What role is stockpiling playing?
Annabel Fiddes, economics associate director at S&P Global Market Intelligence, noted the current expansion is partly driven by stockpiling behavior.
In plain terms = both manufacturers and their customers are racing to build inventory — to guard against shortages and to hedge the price risk from the Middle East conflict.
This means → once the restocking impulse fades, PMI has room to slip further.
Confidence is recovering — so where's the catch?
Business confidence for the year ahead improved from April, when it had fallen to its lowest since the April 2025 tariff shock.
The bull case: strong growth in AI and electronics, which manufacturers expect to ride.
But Fiddes warned that surging costs and a softening global economic environment could become the main headwinds in coming months.
Content is for reference only, not financial advice.