Yen's sharp decline forces central bank to raise interest rates early? Report: Officials more concerned about the impact of weak exchange rates on inflation.

Officials at the Bank of Japan are increasingly concerned about the potential impact of a weak yen on inflation, a situation which may substantially disrupt the future rate hike trajectory. According to sources cited by Bloomberg, while the Bank of Japan is likely to keep rates unchanged at the upcoming policy meeting, exchange rate factors may prompt it to reassess the timing of a rate hike—and could even force it to act sooner than planned.

Bloomberg reports that BOJ officials believe the influence of yen weakness on prices is growing stronger, especially as companies are increasingly passing rising input costs onto consumers, possibly further intensifying inflation pressures. Though the BOJ just raised its benchmark rate last month and hasn't set a fixed lending cost path, if the yen continues to weaken, policymakers may consider moving forward a rate hike that was originally expected at a later date.

Currently, private economists generally expect the BOJ to raise rates about once every six months, which means the next move could happen this summer. However, sources told Bloomberg that officials prefer to make timely policy adjustments rather than being excessively cautious, indicating that the market's previous expectations for the pace of rate hikes are now uncertain. Following this news, the yen briefly fell to around 158.68 against the dollar before recovering to 158.33; at the time of writing, the yen was down to 158.55 against the dollar.

January Meeting Outlook: Rate Hold Expected

The Bank of Japan will announce its latest policy decision on January 23. Sources told the media that officials currently believe that holding rates at 0.75% is appropriate, a level already at a 30-year high. Though the overall inclination is to stay put, the committee will continue to monitor economic data and financial market changes up to the last moment before finalizing its decision.

The focus of this meeting will be how the central bank evaluates the yen's impact on potential inflation. Sources told Bloomberg that, given inflation trends are already close to the BOJ's 2% target, officials will closely watch how exchange rate fluctuations change price expectations for households and businesses.

Exchange Rate Transmission Mechanism Draws Attention

Yen depreciation usually increases inflation pressure by raising import costs, while also boosting the profits of exporters. However, some officials point out that with continued yen weakness, its negative impact on the economy may be rising. Officials believe the Bank of Japan still has room to keep raising rates, with the key being to grasp the right timing for policy adjustments.

Japan’s business community is also speaking out more on exchange rate issues. Yoshinobu Tsutsui, President of Keidanren—Japan’s largest business lobby—made a rare comment this week, urging the government to intervene in currency markets to prevent excessive yen depreciation, describing the recent yen trend as “a bit overdone.”

Market Background and Political Factors

Although the BOJ raised its benchmark rate on December 19, the yen remains weak against the dollar. Driven by news that Prime Minister Sanae Takaichi will hold an early election next month, the yen further slid this week to its lowest level in 18 months.

Data compiled by Bloomberg show that the 10-year average yen/dollar exchange rate is 123.20, while over the past two-plus years the rate has generally fluctuated between 140 and 161.95. Although the yen has slightly rebounded after hitting an 18-month low earlier this week, as monetary authorities have stepped up warnings, the overall weakening trend continues to exert sustained pressure on the central bank's policy decisions.

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