Conclusion: The Bank of Japan is on a path to further rate hikes, but what determines USD/JPY is the interest-rate differential between Japan and the United States

To understand USD/JPY, the Bank of Japan's policy rate is indispensable.

As of early morning on August 13, 2026, USD/JPY is around 159.35 yen.Investing.com USD/JPY dataThe BOJ's policy rate is 1.00%, while the Federal Reserve's policy rate is 3.50–3.75%. In simple terms, there is a gap of 2.50–2.75 percentage points between the two. This sizable interest-rate differential supports a stance where investors prefer holding dollars over yen.

Currently, the BOJ is clearly leaning toward further rate hikes. The central view is to raise the policy rate to 1.25% within this year. However, it is not yet decided when exactly (September, October, or December the move would occur).

More importantly, even if the BOJ raises by 0.25%, if the U.S. raises rates simultaneously, the difference between the two countries' rates would not shrink. Conversely, if the BOJ holds steady, a strong expectation of a Fed cuts could cause the USD/JPY to fall.

In other words, when looking at USD/JPY, it is not sufficient to ask just “whether the BOJ will raise.”

What matters is not how high the BOJ's rates go, but whether the rate gap between Japan and the U.S. shrinks faster or widens beyond market expectations.

That is the conclusion of this article.

The current BOJ policy rate is 1.00%

At the June 16 monetary policy meeting, the BOJ decided to guide the uncollateralized overnight call rate to around 1.00%. Subsequently, at the July 31 meeting, it held it at 1.00%.

However, the July meeting was not a pure standstill. Among the nine Policy Board members, one proposed a rate increase to 1.25%. The proposal was rejected, but it already indicates that the next rate hike is a concrete option within the BOJ.

• June meeting: raise policy rate to 1.00%

• July meeting: kept at 1.00%

• Opposition at July meeting: proposed 1.25% rate hike

• BOJ basic policy: continue to raise policy rates in response to economic, price, and financial conditions

BOJ — June 16, 2026 Financial Markets Regulation Policy／BOJ — July 31 Monetary Policy Decision

Why is a rate hike necessary?

The main reason the BOJ is considering a rate hike is that inflation may be shifting from temporary imported inflation to a sustainable trend where wages and prices rise together.

In the July Outlook Report, the BOJ projected the median for the CPI excluding fresh food to be as follows.

The BOJ expects the inflation rate to clearly exceed 2% in the latter half of fiscal 2026, and the underlying inflation rate to move toward 2% from the second half of fiscal 2026 into fiscal 2027.

On the other hand, even with a policy rate of 1.00%, the real interest rate after subtracting inflation is negative in the near to medium term. The BOJ still considers financial conditions as accommodative. In other words, even though 1.00% is higher than in the past, it is not necessarily a strong tightening given the current price environment.

BOJ — July 2026 Outlook Report

The next policy rate is centered at 1.25%

In a Reuters survey published on July 23, 86% of economists expected a rate hike to 1.25% by the end of 2026. Of those who answered the timing of the rate hike, 53% chose December and 35% chose October.

This survey was before the July meeting. In the major opinions published after the July meeting, some noted a greater emphasis on upside risks to price levels and suggested that depending on the economy, prices, and financial conditions, the BOJ could hike faster than market expectations.

Therefore, at present, it can be organized as follows.

• 1.25% within the year: central scenario

• September rate hike: as an early scenario to watch

• October or December rate hike: a strong candidate that can be explained alongside the Outlook Report

• December rate hike: a candidate if the economy and prices are to be checked carefully

• Hold within the year: if economic conditions worsen or external shocks intensify

However, the BOJ has not promised a specific month for a hike. 1.25% is not a decision but a market expectation.

Investing.comк Reuters survey published by Investing.com／BOJ July Meeting main opinions

How far will the BOJ raise ultimately?

In the market, 1.50% is expected after 1.25%. In the Reuters survey mentioned above, 70% expected to reach at least 1.50% by Q2 2027, and a small majority saw 1.50% as the final rate.

However, the BOJ itself has not indicated a final target level. Among policy board members, some think current policy rates are below the lower bound of the neutral rate, while others note that the neutral rate should be viewed with a range.

At this stage, it is easier to think of the next steps as follows.

1. Current: 1.00%

2. Next focus: 1.25%

3. Focus in 2027: 1.50%

4. Beyond that: depends on inflation, wages, and the economy; not yet the central scenario

Five signs that rate hikes are approaching

1. Core inflation

Not only the overall index affected by energy prices and subsidies, but whether price increases continue across a wide range of items. The BOJ emphasizes whether core inflation stabilizes near 2%.

2. Wages and service prices

Beyond temporary higher raw material costs, if wage increases spill over into service prices, inflation becomes more persistent. The monthly Labour Survey, Shunto (Spring Offensive), and service prices are clues for timing of hikes.

3. Yen depreciation and import prices

A weaker yen pushes up import and energy prices. Firms pass costs to prices more easily, making currency moves transmit to prices more readily. The higher USD/JPY stays, the more it favors early hikes.

4. Personal consumption and economy

Rate hikes have a cooling effect on the economy. If real wages and personal consumption weaken and recession fears grow, the BOJ may delay hikes.

5. U.S. policy rate

At the July 29 FOMC, the Fed kept the policy rate at 3.50–3.75%. However, 3 of 12 officials advocated a 0.25% hike. Inflation remains a concern in the U.S., so the simple framework of “BOJ hikes, Fed cuts” does not apply.

Fed — FOMC Statement, July 29

Three policy scenarios for USD/JPY

Scenario 1: Early hike to 1.25% in September

Inflation, wages, and yen weakness continue to push up import prices, with the BOJ prioritizing upside inflation risk.

If the hike occurs sooner than market expectations, yen buying toward narrowing the U.S.-Japan rate gap could push USD/JPY lower. However, if the Fed also leans toward hikes at the same time, or if September hikes are already priced in, the yen may not stay strong for long.

Scenario 2: Hike to 1.25% in October or December

Current central scenario. The BOJ would wait for additional data while monitoring the impact of the June hike.

In October, a new Outlook Report is published, which helps explain both inflation outlook and rate hikes. If U.S. rates stay high until then, USD/JPY tends to stay higher.

Scenario 3: Stay at 1.00% through 2026

Cases include deterioration in consumer spending, economy slowing, overseas economy sharply decelerating, or market turmoil.

If expectations for further hikes fade, the U.S.-Japan rate gap could remain wide, leading to yen selling. Conversely, if yen weakens past 160 sharply, government and BOJ statements and possible intervention could cap further losses.

“BOJ hikes will not automatically mean yen appreciation”

The forex market reacts more to surprises relative to expectations than to decisions themselves.

Even with the same “rate hike,” the outcome depends on how much was priced in before the decision, whether a further hike was hinted, and how U.S. rates moved.

Important dates going forward

BOJ — Schedule of Monetary Policy Meetings／Fed — FOMC Schedule

Summary

The BOJ's policy rate is currently 1.00%, and the direction is toward further hikes. The next focus is 1.25%, and for now the central view is that the rate will reach that level within the year. Beyond that, there is focus on moving to 1.50% in 2027.

However, USD/JPY is not determined by the BOJ alone.

• The BOJ hikes earlier than market expectations

• The Fed holds or pivots toward cuts

• The U.S.-Japan rate gap narrows

When these three align, yen appreciation and USD/JPY declines are more likely.

Conversely, if the BOJ remains cautious and U.S. high rates persist, even a 0.25% hike by the BOJ may not change the yen-down trend much.

To understand USD/JPY, focus on the market’s expectations for the next policy rate and the path of the U.S.–Japan rate differential, not just the BOJ’s policy rate itself.

※This article is based on publicly available information as of August 13, 2026, and does not recommend any specific trading actions. Policy rates, exchange rates, and market expectations can change with economic indicators and policymakers’ statements. Please make final investment decisions at your own risk.

References

• BOJ — June 16 Financial Market Regulation Policy

• BOJ — July 31 Monetary Policy Decision

• BOJ — July 2026 Outlook Report

• BOJ — July Meeting main opinions

• BOJ — Schedule of Monetary Policy Meetings

• Fed — FOMC Statement, July 29

• Reuters — BOJ Policy Rate Outlook (Investing.com)

• Investing.com — USD/JPY Historical Data

The USD/JPY price referenced here is as of around 6:14 on August 13, 2026. Values may vary by data provider and time of capture.