October 27, 2026

The Fed, ECB, and BOJ Interest Rate Week: How Will the Dollar-Yen and Euro Move? Three Scenarios by Currency

“If the Fed holds rates steady, will the dollar weaken?”
“If the BOJ doesn’t raise rates, will the yen continue to weaken?”

In both cases, the decision alone does not provide the answer.

Exchange rates react not only to interest rate levels, but also to the difference from what the market expected, and to differences in interest rate outlooks compared to other countries. At this week’s meetings of the US, Japanese, and European central banks, the rhetoric following the meetings could dictate the direction of the currencies.

The conclusion first

Compare the interest rate outlooks of the US and Japan for the dollar-yen, and the US and Europe for the euro-dollar. However, when risk aversion or rising oil prices are added to the mix, movements that cannot be explained by interest rate differentials alone can occur.

First, confirm “which central bank is deciding what,” and then look at the “difference from market expectations” and the “market reaction.”

Fact: Interest rate outlooks confirmable before the meetings

According to surveys and reports available as of October 27, the consensus expectation is for the Fed to hold steady at its October meeting, the ECB to hold steady in October, and the BOJ to also hold steady at its October meeting.

However, the next move for each institution is not the same.

Fed: A hold is the dominant expectation for October. Meanwhile, a Reuters survey of economists shows an increase in expectations for an additional rate hike by the end of the year. Reuters survey

ECB: A hold in October is the central expectation. There is a view that they will leave room for future rate hikes while monitoring energy prices and the persistence of inflation. ECB meeting outlook

BOJ: A hold is the central expectation for October, but the inflation outlook and Governor Ueda’s explanation will be material for gauging the timing of the next rate hike. In a Reuters survey, many respondents expect a rate hike in December. Reuters report

These three are merely expectations before the meetings. Do not treat decisions or statements as confirmed information.

Analysis: What is conveyed to the exchange rate is the “change in interest rate differentials”

For example, if US interest rates remain higher than Japan’s, the interest rate differential tends to be a favorable factor for those holding dollars. However, the exchange rate is not just looking at the current interest rate differential.

Expectations for US rate hikes strengthen
→ View that the US-Japan interest rate gap will continue to widen
→ Can be a factor for dollar buying and yen selling

Conversely,

The BOJ suggests a rate hike earlier than expected
→ View that the future US-Japan interest rate gap will narrow
→ Can be a factor for yen buying

However, this is a conditional analysis. If the content of the meeting has already been priced into the market, the exchange rate may barely move even with an expected decision. It can also move in the opposite direction despite being as expected.

“The currency of a country that raises interest rates will not necessarily be bought.” What is important is the difference from expectations and how the market reacted after the announcement.

Three scenarios ahead

1. Rates remain on hold, and the timing of the next rate hike does not change significantly

Conditions: The Fed, ECB, and BOJ keep rates on hold within expected ranges, and their press conferences do not significantly pull forward the timing of the next rate hike.

Market Outlook: The impact of the meeting results themselves will be limited, and the focus will be on interest rate differential forecasts between the U.S. and Japan, and the U.S. and Europe. If the dollar-yen or euro-dollar pairs do not move after the announcement, it is possible that the information was already largely priced in before the meeting.

Things to check: The reaction of short-term interest rates after each meeting, the price movement of the dollar-yen and euro-dollar before and after the announcement, and whether the price movement continues several hours later. Do not determine the direction based solely on a momentary fluctuation.

2. The Fed is more hawkish than expected, while the BOJ and ECB remain cautious

Conditions: The Fed strongly signals vigilance regarding prices and the possibility of additional rate hikes, while the BOJ and ECB remain relatively cautious in their explanations.

Market Outlook: If expectations for higher U.S. interest rates strengthen, the dollar may be supported. If the BOJ remains cautious, the dollar-yen may face upward pressure. For the euro-dollar, a widening gap in U.S. and European interest rate forecasts could act as a downward factor.

However: If risk aversion intensifies, other factors such as demand for safe-haven assets will also come into play. Check whether the situation can be explained by interest rate differentials alone, and also confirm the reactions of U.S. Treasury yields and the stock market.

3. The BOJ is more hawkish than expected, or yen buying increases due to risk aversion

Conditions: The BOJ emphasizes upward pressure on prices and indicates room to move up the timing of a rate hike. Alternatively, a reversal of trades using the yen as a funding currency occurs due to factors like falling stock prices.

Market Outlook: If the view that U.S.-Japan interest rate differentials will narrow coincides with yen buying due to risk aversion, it will act as a downward factor for the dollar-yen. However, if U.S. interest rates rise at the same time, the strength of the yen’s appreciation may be weakened.

Things to check: Look at not only the dollar-yen but also the U.S. 2-year Treasury yield, Japanese short-term interest rates, and the stock market on the same timeline. Even if the yen reacts to BOJ statements, if interest rate differentials have not moved, the primary cause may be position adjustments or market caution.

Checklist for looking at currencies

Are the meeting decisions the same as or different from pre-meeting expectations?
Did the outlook for the next rate hike change in the statements or press conferences?
Did short-term interest rates and government bond yields react to those statements?
Does the initial movement in the currency continue several hours later?
Are factors other than interest rate differentials, such as falling stock prices or rising crude oil prices, moving at the same time?

Terminology Memo

Interest rate differential: The difference in interest rates between two countries. Expectations that the interest rate differential will widen or narrow can affect the supply and demand of currencies.

Hawkish: A stance that prioritizes curbing inflation and keeping interest rates high or raising them.

Priced in: The state where expected information is already reflected in market prices.

Summary

This week, the focus is not just on the policy interest rate figures, but on how the market reinterprets the next moves of the Fed, ECB, and BOJ.

For the dollar-yen, compare the interest rate outlooks of Japan and the U.S.; for the euro-dollar, compare those of the U.S. and Europe. Then, check the interest rates and exchange rates after the announcements. It is important not to decide the direction of a currency based solely on news headlines, but to look at the conditions and counter-evidence together💡✍️

Reference Date and Disclaimer

This is a pre-event scenario article as of October 27, 2026. Pre-event forecasts refer to the research and reports indicated in the text. The meeting results have not yet been released.

This article provides general information and does not recommend or solicit the purchase, sale, or holding of any specific financial product. Exchange rate scenarios do not guarantee future price movements or profits.