Japanese yen surges rapidly! Report: Japanese Prime Minister Sanae Takaichi supports faster rate hikes by the Bank of Japan

The yen-dollar exchange rate surged sharply in the short term after a Bloomberg report stated that Prime Minister Sanae Takaichi’s administration supports the Bank of Japan’s recent rate hike.

According to sources, the most likely window for the Bank of Japan’s next rate hike could be in September or October. Concerns from the Bank of Japan about yen weakness driving inflation, together with the government’s desire to consolidate the recent effect of Japan-U.S. exchange rate interventions, are gradually aligning, with both parties leaning toward supporting a near-term rate increase.

After the news, the yen exchange rate quickly surged by 20 points in the short term.

Currently, market pricing for a rate hike at the Bank of Japan’s September 18 policy meeting has risen to 74%. Meanwhile, U.S. Treasury Secretary Janet Yellen had previously signaled that it is necessary for the Bank of Japan to take action to bolster the yen. The emergence of this government stance has further solidified market expectations for a faster normalization of Japanese monetary policy.

According to Bloomberg, citing sources, there are two main reasons driving both sides closer: First, the Bank of Japan is concerned that prolonged yen weakness will worsen imported inflation pressures; second, the government wants to amplify the policy effect of the recent joint Japan-U.S. intervention in the foreign exchange market.

The effect of the first joint yen-buying intervention by Japan and the U.S. since 1998 is fading, and the market expects the central bank to follow up with rate hikes to fundamentally support the currency.

Bank of Japan Governor Kazuo Ueda mentioned the possibility of speeding up rate hikes at the press conference following the July 31 policy meeting, citing risks from rising price pressures. Sources also revealed that the government had already communicated ahead of the July meeting that it would support Ueda delivering a more hawkish message at the press conference.

In a statement, the Prime Minister’s Office said, "We believe that specific monetary policy measures, including rate hikes, should be left to the Bank of Japan’s discretion," but emphasized that the central bank should work closely with the government to achieve the 2% inflation target "in a stable manner." The Bank of Japan declined to comment.

Despite the government’s supportive stance, central bank officials still wish to further assess the economy and price trends before making a final decision, but have not ruled out action in September.

In the summary of opinions from the BOJ’s July meeting, one member explicitly pointed out that monetary policy needs more flexibility. The member stated that given the core CPI inflation rate is close to 2%, "the pace of rate hikes could be faster than the market expects."

Legally, the Bank of Japan holds independence in monetary policy; the cabinet cannot force it to set a specific rate level, but can influence decisions by signaling its preferences.

Recently, several government officials have voiced their support for central bank independence, including Economic Growth Strategy Minister Minoru Kiuchi, who said in a Bloomberg TV interview this Monday that "we respect the central bank’s independence," which the market interpreted as a signal the government is open-minded towards further tightening monetary policy.

Since Sanae Takaichi took office, the Bank of Japan has hiked rates twice, and the benchmark rate remains at a low 1%. A further rate hike in September or October would mark the third increase in 12 months, the fastest tightening pace since 1989—at the peak of Japan’s asset bubble.

Sanae Takaichi was long known as a politician cautious about raising rates too quickly, concerned that rapid hikes could dampen the Japanese economic recovery that global investors are watching closely. However, inflation pressures and rising cost of living from a persistently weakening yen have become major issues voters demand the government address, shifting the political balance toward backing further rate increases.

The wide U.S.-Japan interest rate differential is one of the structural drivers of yen depreciation. As foreign exchange interventions become less effective, rate hikes are seen as a more sustainable tool for exchange rate stability, and are a key point of government and central bank policy coordination.