“Driven by Yen Weakness and U.S. Pressure” BOJ’s Accelerated Tightening Timeline Threatens Wage-Price Virtuous Cycle

Bank of Japan signals further tightening after June rate hike
Gradual approach loses ground, raising concerns over wages and domestic demand
U.S. pressure for rate hikes intensifies amid yen weakness and rising government bond yields

The Bank of Japan (BOJ) is accelerating its monetary tightening campaign. After policymakers discussed the possibility of further increases alongside the rate hike approved at the June Monetary Policy Meeting, BOJ Governor Kazuo Ueda personally reaffirmed the stance, effectively confirming a shift in the central bank’s policy trajectory. Market analysts say the BOJ, which had pursued a virtuous cycle of wages, consumption and prices, has begun shifting the focus of its policy management under mounting domestic and external pressure to confront elevated inflation and yen weakness.

BOJ Releases Minutes of June Meeting

According to the minutes of the June Monetary Policy Meeting released by the BOJ on August 5, most Policy Board members agreed that underlying consumer price index (CPI) inflation could exceed the 2% price stability target. They expressed concern that companies had passed on higher oil costs relatively quickly in business-to-business transactions and that the trend could drive consumer prices higher across a broad range of goods. Rising import prices caused by exchange-rate fluctuations were also cited as a concern. Taking these conditions into account, the BOJ raised its benchmark interest rate to 1.0% at the June meeting, the highest level in 31 years. Of the eight Policy Board members present, Toyoaki Nakamura was the only member to oppose the rate increase. Ueda was hospitalized for treatment of a liver cyst and did not attend the meeting.

Several members argued that financial conditions would remain accommodative after the policy rate increase and that further hikes should proceed if economic activity and prices evolved in line with projections. Two members called for a faster pace of tightening. One member noted that Japan’s policy rate remained below the estimated range of the neutral rate, unlike rates in the United States and Europe, and stressed the need to bring it closer to neutral as quickly as possible to secure the flexibility required for prompt adjustments in either direction.

Ueda Signals Further Rate Increase

The possibility of another rate increase was also emphasized at last month’s Monetary Policy Meeting, where the BOJ kept rates unchanged to assess the effects of the June hike. At a news conference following the meeting on July 31, Ueda said, “We need to monitor more closely than before the risk that underlying inflation will exceed the 2% price stability target,” warning that “an excessive rise in underlying inflation could adversely affect the economy.” Factors expected to exert upward pressure on prices included higher international oil prices stemming from deteriorating conditions in the Middle East, rising semiconductor prices driven by growing artificial intelligence (AI) demand and continued yen weakness.

Addressing the timing and pace of further rate increases, Ueda said, “We will make our decision by considering how developments in the Middle East, AI demand and exchange-rate fluctuations affect the economy and prices,” adding, “We will begin closely discussing whether to raise rates from the next meeting in September onward.” His remarks indicate that the BOJ intends to monitor the effects of the rate increase and other market variables on the economy and prices through September before making a full-scale decision on additional tightening at its October meeting. The BOJ has three Monetary Policy Meetings remaining this year, scheduled for September, October and December.

Importance of Calibrating the Pace of Monetary Policy

Markets are focusing on signs that the BOJ’s rate-hike cycle is proceeding faster than expected. The central bank has adjusted rates gradually as it exits the zero-interest-rate era. In March 2024, it abruptly ended its negative interest rate policy of minus 0.1% after 17 years and began normalizing monetary policy, before raising the benchmark rate to 0.25% in July of the same year. It subsequently implemented three additional increases of 0.25 percentage point each—in January and December last year and again this June—bringing the rate to its current level.

The BOJ has raised rates gradually to preserve the recovery in wages and domestic demand. Wage increases have recently spread across Japanese companies, allowing nominal wage growth to catch up with inflation. An improvement in real wages restores household purchasing power and supports consumption, which in turn lifts corporate sales and earnings. Stronger operating performance then gives companies greater capacity to raise wages again. This produces a virtuous cycle in which wages, consumption, corporate earnings and prices rise at a measured pace. Premature rate increases could abruptly derail the recovery. Higher lending rates increase household interest burdens and reduce disposable income for consumption while weakening corporate incentives to invest, hire and raise wages. A renewed slowdown in nominal wage growth would also impede gains in real wages and the recovery in purchasing power.

Table 1. Adverse Effects of Premature Policy Rate Increases

Washington Presses for Rate Increase

The BOJ is accelerating tightening despite these risks because domestic and external pressure has intensified markedly. In a statement issued on August 3, Japanese Finance Minister Satsuki Katayama officially confirmed that the United States and Japan had jointly intervened in the foreign-exchange market by purchasing the yen. It marked the first U.S. purchase of the yen alongside Japan in 28 years, since the 1998 Asian financial crisis. Katayama said the intervention was conducted under the U.S.-Japan Joint Statement of Finance Ministers signed last September and described it as “a measure to address the excessive volatility and disorderly movements recently observed in the yen.” She added that Japan remained in close communication with the U.S. government and would not hesitate to intervene again if necessary.

Following the joint intervention, however, Washington publicly called on the BOJ to raise interest rates, arguing that direct yen purchases alone could not alter the currency’s trajectory. In an interview with CNBC on August 4 local time, U.S. Treasury Secretary Scott Bessent said, “Intervention can send a signal to the market, but policy changes the direction of prices.” Referring directly to Ueda, he added, “I trust that he will do what is necessary.” The remarks amounted to pressure on Japan to raise rates swiftly and address the fundamental causes of yen weakness.

Bond Market Rattled by Expansionary Fiscal Policy

The U.S. demand also targets Prime Minister Sanae Takaichi’s expansionary fiscal policy. Takaichi has sharply increased fiscal spending since taking office last October. Expenditure under the supplementary budget finalized last winter reached approximately $116 billion, the largest package since the COVID-19 pandemic. A succession of tax cuts has followed. After abolishing the provisional gasoline tax rate, the Takaichi administration announced on July 30 that it would reduce the consumption tax on food from 8% to 1%.

The combination of higher fiscal spending and declining tax revenue has heightened concerns over the sustainability of Japan’s public finances, prompting investors to demand a higher risk premium on Japanese government bonds. The yield on the 10-year Japanese government bond traded at around 1.6% before the Takaichi administration took office but climbed to 2.91% last month, its highest level in 30 years. Rising Japanese government bond yields could also affect the U.S. bond market. Japanese government bonds serve as benchmark assets in the global bond market alongside U.S. Treasuries and German government bonds. If fiscal instability pushes Japanese yields higher, global investors could demand higher returns on U.S. Treasuries, which carry similar fiscal pressures. Investors could also reduce their U.S. Treasury holdings and redirect capital toward increasingly attractive Japanese government bonds, while the probability of a large-scale unwind of yen carry trades—through which investors borrow cheaply in yen to purchase overseas bonds and equities—would rise. Investors would then sell existing assets, including U.S. Treasuries, to repay borrowed funds, intensifying pressure on U.S. financial markets.