Commerzbank Sees Yen Pressured by Energy and Yield Gap

Commerzbank analysts identify two structural forces keeping the Japanese yen under sustained pressure. First, rising energy import costs have widened Japan’s trade deficit, creating a mechanical flow of yen selling. Second, the wide interest rate differential between the Federal Reserve and the Bank of Japan encourages a persistent carry trade that weighs on the currency. Neither drag shows signs of easing soon.

The Energy Channel: Terms of Trade and the Deficit

Japan is the world’s third-largest crude oil importer. Higher Brent crude and LNG prices directly inflate the nation’s import bill, pushing the trade deficit wider. That deficit forces Japanese importers to sell yen and buy dollars to settle fuel payments. The simple read is that oil moves the yen. The more precise mechanism runs through the terms of trade. Deteriorating terms of trade reduce Japan’s national income and lower the equilibrium exchange rate for the yen. As long as global energy costs stay elevated relative to Japan’s historical average, this mechanical selling pressure persists. The structural current account surplus that once anchored yen strength has eroded. Japan no longer generates the same natural bid from trade flows.

The Rate Differential Trap

The second drag comes from monetary policy divergence. The Federal Reserve holds its policy rate at multi-decade highs. The Bank of Japan maintains a negative short-term rate and caps the 10-year JGB yield around 0.5% to 1.0% through yield curve control. The resulting gap makes shorting the yen and going long the dollar one of the simplest carry trades in the forex market. Hedge funds and asset managers have built large net short yen positions, as shown in recent weekly COT data.

The mechanism is self-reinforcing. A higher US rate keeps the yen under pressure, making the carry trade more profitable. That attracts additional shorts, pushing the yen lower. The circuit only breaks if the BoJ abandons yield curve control or if the Fed cuts rates faster than the market prices in. Commerzbank’s analysis implies that neither catalyst is imminent. A modest BoJ tweak, such as widening the trading band for the 10-year JGB, may not reverse the trend while the Fed remains hawkish.

What Confirms or Weakens the Setup

For traders watching USD/JPY, the next decision points are clear. First is the BoJ’s policy meeting. Any adjustment to yield curve control could trigger a sharp, short-lived yen rally. Yet the sustainable move depends on the width of the band and the accompanying forward guidance. Second is US inflation and labor data that will determine whether the Fed can hold rates steady or needs to hike again. Third is the path of crude oil. A break below key support levels would ease Japan’s import bill and remove one pillar of yen weakness.

Commerzbank’s diagnosis ties the yen’s fate to external variables beyond the BoJ’s control. That makes USD/JPY a macro-driven trade rather than a policy-driven one. Use the position size calculator to manage risk on a pair that can gap on BoJ headlines. The next inflection point is the BoJ policy statement followed by the US CPI release.