Japan Posts Record $17.8 Billion Trade Deficit as Iran War Squeezes Oil

Japan booked a record trade deficit of 2.81 trillion yen ($17.8 billion) for the first fiscal half, according to Finance Ministry preliminary data released Wednesday, as the war in Iran sent oil import prices soaring.

The April-September numbers show both sides of the ledger at all-time highs. Exports grew 18.4% year-over-year to 63.5 trillion yen. Imports climbed even faster, up 20.4% to 66.3 trillion yen — leaving the record shortfall between them.

Put in per-month terms, the half-year gap averages roughly 470 billion yen, or close to $3 billion every month flowing out of the country faster than it comes in.

What's driving the import bill?

Oil is the core of the problem. Brent crude, the international standard, has surged from $70 a barrel in February to around $110 — a jump of more than 55% in roughly eight months. Analysts say prices are unlikely to ease soon.

The pain spreads far beyond the gas pump. The soaring price of oil affects a wide range of sectors, including plastic goods and shipping costs, so manufacturers and logistics operators alike are absorbing higher input costs.

Geography makes Japan especially exposed. Resource-poor Japan imports virtually all its oil and has relied on access to the Strait of Hormuz in the Middle East for its shipments. That route is now basically blocked, and Japan has had to pay more to get shipments from other routes.

How bad was September alone?

September's trade deficit totaled 536.6 billion yen, the fifth consecutive month in the red. That's an improvement from August's 1.1 trillion yen deficit — roughly cut in half — but still firmly negative.

September imports grew 18.9% from the previous year, outpacing export growth of 16.7%.

What does this change for the yen and rates?

Here's the practical question for anyone trading yen or pricing Japan exposure: the weak currency amplifies every dollar of oil Japan buys. The U.S. dollar is lately trading at 150-yen levels, which drives up the cost of imports denominated in dollars.

The Bank of Japan has responded by gradually raising interest rates after years of keeping borrowing costs at or near zero to support a shaky economy — in part specifically to prop up the yen.

Last month, the BOJ raised its benchmark rate to 1.25% from 1.0%, a 31-year high. Its monetary policy board meets again next week, with an inflation target of about 2% still on the books. Traders should treat that meeting as the next live catalyst for yen direction.

Can fiscal policy soften the hit?

The government has repeatedly stressed it's working closely with the Bank of Japan. Prime Minister Sanae Takaichi's government is promising a tax cut on food to 1% from 8% to help lower-income families cope with soaring prices. That bill is now being debated in Parliament.

For households, the difference between 8% and 1% food tax is meaningful on a weekly grocery bill. For businesses, the calculus is different — the food tax cut won't touch the oil-driven costs squeezing plastics and shipping.

The forward picture depends on two things the source flags: Brent staying elevated because of blocked Hormuz routes, and the BOJ's rate path. With analysts expecting no near-term relief in oil prices and the policy board meeting next week, import-driven pressure on Japan's trade balance looks set to persist into the second fiscal half.