TOKYO, Aug 15 (Alliance News): The ongoing war involving Iran has created growing economic challenges for Japan, with disruptions to Middle Eastern oil supplies, higher energy costs and financial market volatility putting pressure on the country’s economy.
Japan relies heavily on Middle Eastern countries for crude oil imports, making the Strait of Hormuz a critical supply route for the world’s fourth-largest economy. Prolonged disruption to shipping through the strategic waterway could increase costs for Japanese manufacturers, transport companies, farmers and households.
The impact is particularly significant because Japan has limited domestic energy resources and depends heavily on imported fuel to meet its economic and household needs.
The Bank of Japan has already signalled growing concerns over the economic impact of the conflict. Its March monetary policy review cut the country’s growth forecast for the year to 0.5%, while raising its inflation forecast to 2.8%.
The combination of weaker economic growth and elevated inflation presents a difficult challenge for Japanese policymakers. Raising interest rates could help contain inflation but may further weaken economic activity, while maintaining an accommodative monetary policy could allow price pressures to persist.
Economists have also warned that a prolonged disruption to oil supplies could further affect Japan’s economy.
According to modelling cited by the report, a prolonged conflict accompanied by significant but incomplete disruption to shipping through the Strait of Hormuz could push crude oil prices to around $87 per barrel. Such a scenario could reduce Japan’s GDP by an estimated 0.18% and increase consumer prices by around 0.3%.
The Japanese yen has also come under pressure amid higher energy costs and broader global market uncertainty. The currency has weakened significantly against the US dollar, approaching and temporarily moving beyond the 158-159 yen per dollar level.
The sharp movement has raised concerns among Japanese authorities. Finance Minister Satsuki Katayama has indicated that the government could consider intervention in the currency market if excessive volatility continues.
A weaker yen could further increase the cost of imported energy and other commodities, adding to inflationary pressure on Japanese consumers and businesses.
Japanese stock markets have also reflected concerns about the economic consequences of the conflict. The Nikkei 225 suffered a sharp decline in late March, falling around 3.3% in a single session as technology, financial and consumer companies came under selling pressure.
Foreign investors, who had been major buyers of Japanese equities earlier in 2026, also turned into net sellers, adding to pressure on the country’s financial markets.
The economic uncertainty has also reached Japanese households. A survey by Asahi Shimbun found that around 90% of respondents were at least somewhat or very concerned about the potential impact of the conflict on Japan’s economy.
The concerns reflect the broader consequences of a conflict far from Japan’s shores. Higher fuel prices can raise transportation and electricity costs, while increased production expenses can eventually feed into the prices of food, manufactured goods and other consumer products.
For Japan, the situation highlights the vulnerability created by its dependence on imported energy and the importance of maintaining stable international supply routes.
The longer the conflict continues, the greater the potential risks for Japan’s economic growth, inflation, currency stability and household purchasing power. Policymakers are therefore closely monitoring oil prices, shipping conditions, the yen and developments around the Strait of Hormuz.
While Japan is not directly involved in the conflict, its dependence on Middle Eastern energy means that prolonged instability in the region could continue to have significant economic consequences at home.
