Japan Weighs FX Action as Oil-Driven Import Costs Widen Trade Deficit
Record crude import prices and a renewed Hormuz shipping closure have pushed Japan's trade balance into deficit, amplifying pressure on Tokyo to defend the yen.
The dollar traded at 157.58 yen as of Monday (2026-08-03), and Bloomberg has reported that Japan's authorities are examining foreign-exchange intervention options as surging crude import costs erode the country's trade position. The yen's inability to recover, even as dollar confidence has weakened globally, is compressing Japan's energy import economics in ways that fiscal tools alone cannot fix.5
The underlying numbers are severe. Japan's crude oil import unit price hit a record ¥114,076 per kiloliter in May (2026-05-31), a 67.2% year-on-year increase, Japan NRG reported. That contributed to Japan's first trade deficit in four months, with the Ministry of Finance recording a ¥378 billion shortfall: total imports climbed 12.5% to ¥9.89 trillion while exports — supported by semiconductor and automobile demand — grew 17% to ¥9.51 trillion but still fell short.3
The supply dislocation is structural, not cyclical. Before hostilities began in the Gulf, Japan's refiners sourced roughly 95% of all crude imports from the Middle East, according to Oilprice.com citing Japan's trade chief in July (2026-07-15). Oil imports from that region have since fallen 61.9%, Japan NRG data show, stranding a procurement model built around Hormuz access.6,3
Alternatives exist, but they are expensive. Rerouting tankers around the Cape of Good Hope adds more than 30% to transportation costs compared with the Hormuz corridor, according to Masahiro Okafuji, chief executive at trading house Itochu Corporation, as reported by Oilprice.com. The strait itself remains off-limits in the near term following renewed hostilities and fresh threats to vessels, Japan's trade chief said in July (2026-07-15).6
The yen has not provided the customary cushion. Ordinarily, dollar weakness translates into a stronger yen, reducing the local-currency cost of dollar-priced oil. The Atlantic Council noted in July (2026-07-07) that despite reports of record Japanese current-account surpluses and declining confidence in the US dollar internationally, the yen has not appreciated as that relationship would predict. Japan's energy import bill is therefore exposed on two fronts simultaneously: elevated dollar oil prices and a currency offering less relief than historical patterns would suggest.7
Tokyo has already deployed fiscal support. Prime Minister Sanae Takaichi approved a ¥19.4 billion package to cushion households from oil and gas price increases caused by Middle East supply disruptions, Oilprice.com reported in June (2026-06-03). The government separately authorised a temporary one-year expansion of coal-fired power generation to cover gaps in crude oil and LNG supply, according to a Kyodo News report cited by Anadolu Agency in March (2026-03-27).2,4
LNG exposure adds a separate pressure point. Sakhalin-2, the Russian project in which trading houses Mitsui and Mitsubishi hold equity stakes, supplies roughly 9% of Japan's total LNG imports, Japan NRG reported in June (2026-06-22). That volume cannot be easily replaced. Asian JKM benchmark gas was quoted at $21.25 per MMBtu on Monday (2026-08-03), reflecting the tight regional market Japan must navigate for any incremental procurement.3
Japan is not navigating this in isolation. The Economist estimated in May (2026-05-17) that around 80% of the oil and 90% of the gas that typically transits the Strait of Hormuz is bound for Asian markets. South Korea, which imports 70% of its oil from the Middle East, has imposed a domestic fuel-price cap. Singapore's foreign minister, Vivian Balakrishnan, called the conflict "an Asian crisis."1
Bloomberg Surveillance noted in a recent segment that 163 yen per dollar was not a firm line for Japanese intervention, suggesting Tokyo retains discretion over the threshold that would trigger action.5 With the yen at 157.58 and crude import costs already at record levels in yen terms, how much FX intervention can realistically compress the trade deficit depends on whether Hormuz shipping resumes — a question left open after the latest spike in hostilities reported in July (2026-07-15).6