Japanese yen weakens below 158.50 on BoJ policy uncertainty, US CPI in focus

The Japanese yen (JPY) weakened below the 158.50 level against the U.S. Dollar (USD) amid uncertainty surrounding the Bank of Japan’s (BoJ) policy trajectory and evolving fiscal dynamics in Japan. Political risks, including a snap general election scheduled for February 8, have intensified market volatility, with Prime Minister Sanae Takaichi’s reflationary pledges—such as suspending the consumption tax on food— raising concerns about Japan’s fiscal sustainability. These developments have dampened confidence in the yen, pushing the USD/JPY pair toward 155.85 in early Asian trading.

Recent economic data further complicates the BoJ’s policy outlook. Tokyo’s headline consumer inflation (CPI) fell to 1.5% in January, the weakest reading since February 2022, reducing urgency for additional rate hikes after the central bank raised its benchmark rate to 0.75% in December. This softness, coupled with political uncertainty, has weakened the yen’s appeal. Meanwhile, U.S. Dollar strength remains supported by shifting expectations for Federal Reserve leadership, with President Donald Trump nominating Kevin Warsh as the next Fed Chair. Traders anticipate a slower pace of rate cuts under his tenure, bolstering the USD.

Markets remain cautious about potential coordinated intervention by Japanese and U.S. authorities to stabilize the yen, as hinted by Japan’s Finance Minister Satsuki Katayama. However, geopolitical tensions, including Trump’s tariff threats and escalating U.S.-Iran and Russia-Ukraine conflicts, have limited the yen’s downside by reinforcing its safe-haven status. The USD/JPY pair faces key technical resistance near the 100-day SMA at 153.98, with a break above this level likely to extend gains. Investors will closely monitor upcoming U.S. Producer Price Index (PPI) data and Fed commentary for further direction.