US Treasury Secretary Bessent expressed expectations that Bank of Japan Governor Kazuo Ueda will make appropriate monetary policy decisions with the support of Prime Minister Sanae Takaichi. This comes as the yen exchange rate has slipped back into the 160 yen per dollar range following the large-scale joint US-Japan intervention conducted from July 30 to 31, 2026, with both officials poised for direct talks at the G20 meeting starting on the 31st.

US Treasury Secretary Bessent’s Statement of Expectations for the Bank of Japan

On August 30, 2026, U.S. Treasury Secretary Bessent stated in an interview with Reuters that he has strong expectations for Bank of Japan (BOJ) Governor Kazuo Ueda to make the right decisions regarding monetary policy. These remarks were made ahead of the G20 Finance Ministers and Central Bank Governors meeting, which is scheduled to be held in Asheville, North Carolina, starting on the 31st. When asked whether the BOJ should implement further interest rate hikes as a countermeasure against the weak yen, Bessent stated, “I am not going to tell the Japanese side what to do,” while also making it clear that he expects Governor Ueda to take “appropriate action” backed by the support of Prime Minister Sanae Takaichi. Furthermore, referring to the large-scale monetary easing measures promoted under the Abe administration, he remarked, “I believe Abenomics has probably come to an end,” and asserted regarding Japan’s fiscal policy that it “should enjoy the benefits of Abenomics and continue them.” These statements carried a strong nuance of a check to encourage a departure from excessive reflationary policies, further fueling market expectations for interest rate hikes.

Direct Dialogue Between Japanese and US Financial Authorities Set Against the Backdrop of the G20

The G20 Finance Ministers and Central Bank Governors Meeting, starting on August 31, 2026, will serve as a crucial stage where Japanese and US financial diplomacy directly intersects. Locally, a meeting is scheduled between US Treasury Secretary Bessent and Bank of Japan Governor Ueda, as well as a meeting between Finance Minister Satsuki Katayama and Mr. Bessent. In this upcoming meeting where Japanese and US monetary authorities meet face-to-face, future coordination in the increasingly tense foreign exchange market is expected to be the main theme. In particular, following the joint US-Japan intervention conducted from July 30 to 31, 2026, close communication has been maintained between Japanese and US authorities, with the Japanese side explaining that it has received “support that goes beyond psychological support” from the US side. The US side is believed to aim at correcting the strong dollar, which contributes to reducing its own trade deficit by supporting the prevention of a weak yen, and avoiding the rise in Japanese long-term interest rates associated with a weak yen spilling over into US long-term interest rates. Attention is focused on this direct meeting as an opportunity for the Japanese and US financial authorities to coordinate future intervention policies and interest rate differentials, and to showcase a joint stance against speculative movements.

Current State of Interest Rate Differentials and Exchange Rates

The Return to the 160-Yen Range and the Limits of Coordinated Intervention

The foreign exchange market in 2026 has experienced severe volatility, with the yen temporarily hitting a 39-year low of the 163 yen range per dollar on July 21. To address this, the Japanese and U.S. governments executed a joint intervention between July 30 and 31, the first such collaboration in 15 years. According to data released by the Ministry of Finance on August 28, the amount spent on foreign exchange intervention from July 30 to August 26 reached 15.3993 trillion yen, making it the largest monthly scale on record. While this intervention temporarily pushed the yen back to around the 155 yen range, the effect was short-lived. On August 28, the yen weakened back into the 160 range in the New York market, causing the yen-strengthening effect of the intervention to recede in less than four weeks. The fact that the market trend could not be sustained despite deploying such massive resources has highlighted the inherent limitation of foreign exchange intervention: rather than being a tool to alter fundamental trends, it is merely a way to buy time for temporary volatility adjustments. As global foreign exchange trading volume reaches $7.5 trillion per day, this has once again proven the difficulty of continually resisting structural factors such as interest rate differentials.

Fed Chair Warsh’s Hawkish Remarks and the Widening Interest Rate Differential

The decisive factor that undermined the effects of the currency intervention and pushed the yen back into the 160-yen range against the dollar was the shift in stance shown by Federal Reserve (FRB) Chair Kevin Warsh in his Jackson Hole speech on August 28. In his speech, Warsh strongly signaled the possibility of a rate hike, stating, “If we cannot be confident that underlying inflation is moving clearly and at a sufficient pace toward the 2% target, we have work to do.” Furthermore, he described the current interest rate level of 3.50% to 3.75% as “hard to describe as restrictive,” making it clear that there is still room for tightening against the backdrop of a healthy U.S. economy. Following these remarks, the mood in the market changed completely, and the yield on 2-year U.S. Treasury bonds temporarily surged into the 4.3% range. In addition, the probability of a September rate hike in the interest rate futures market, which predicts monetary policy, jumped from just under 40% before the speech to about 60%. Because the view that the policy interest rate differential between Japan and the U.S. will expand further in the future became dominant, dollar-buying and yen-selling orders became active again, which has become a major driving force in rekindling the depreciation of the yen.

Future Outlook and Implications

The BOJ’s Interest Rate Hike Policy and Its Financial Impact on Domestic Companies

US Treasury Secretary Bessent’s expression of expectations at the G20 and the widening interest rate differential between Japan and the US are increasing pressure on the Bank of Japan (BOJ) for an early rate hike. In the market, speculation is growing that the BOJ will raise its policy rate to 1.25% at its meeting as early as September 18 to 19, and activity anticipating additional rate hikes within the year is brisk. While additional rate hikes by the BOJ will cement the transition to a “world with interest rates,” the financial impact on domestic companies cannot be ignored. According to a survey conducted by Teikoku Databank in December 2025, if borrowing interest rates rise by 0.25% from their current levels, companies carrying interest-bearing debt will face an average increase in annual interest payment burdens of 640,000 yen per company, pushing down ordinary profits by an average of 2.0%. Along with this interest rate hike, an additional 1.6% of companies could potentially fall into ordinary deficit. The impact of the rate hike is expected to be greatest in the “real estate industry,” where a 0.25% rate hike is calculated to increase the interest burden by 2.76 million yen annually and depress ordinary profits by 5.1%. While some companies are developing resilience to rate hikes through progress in passing on costs to prices, concerns remain that small and medium-sized enterprises with fragile financial foundations will face an even more difficult cash flow situation.

The Burden of Rising Interest Rates on Households and Mortgages

The full-scale transition to an era of rising interest rates brings direct economic burdens to the household sector, particularly households with mortgage repayments. Japan’s 10-year government bond yield, an indicator of long-term interest rates, temporarily reached 2.945% in mid-August 2026, marking its highest level in about 30 years. Concurrently, the most common interest rate for the “Flat 35” long-term fixed-rate mortgage, which is linked to this yield, reached 3.29% as of August 2026. Furthermore, if the short-term prime rate rises in conjunction with the Bank of Japan’s rate hikes, an increase in repayment burdens for variable-rate mortgages, which account for the majority, will be inevitable. For households with a mortgage balance of 40 million yen, rising interest rates will increase their annual payment burden by hundreds of thousands of yen, eroding household disposable income. In addition to this, the entrenchment of a weak yen in the 160 yen per dollar range brings continuous price hikes for energy and foodstuffs through import prices, creating dual pressure that drives up the cost of living. Although there is the benefit of increased interest income on household cash and deposits, those benefits tend to be skewed toward a certain segment, and the structural burden of increased interest payments for mortgage-holding households and increased consumer spending due to inflation remains unchanged.

Reference Page

• [Bank of Japan] Bank of Japan Governor’s Press Conference Summary, August 3, 2026
  https://www.boj.or.jp/about/press/kaiken_2026/kk260803a.pdf

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