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Dollar falls versus yen after smaller-than-expected rise in US inflation, euro eases

Published by Global Banking & Finance Review

Posted on December 18, 2025

4 min read

· Last updated: January 20, 2026

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By Rocky Swift TOKYO, Dec 18 (Reuters) - The dollar held gains against its major counterparts on Thursday as markets positioned for central bank decisions in Britain, Europe and Japan. Sterling

Dollar Declines Against Yen After US Inflation Data

By Chibuike Oguh ‌and Samuel Indyk

NEW YORK/LONDON, Dec 18 (Reuters) - The dollar lost ground against the Japanese yen and Swiss franc on Thursday after data showed a ‍lower-than-expected rise in ‌U.S. inflation, while the euro eased after the European Central Bank held interest rates steady.

The U.S. Consumer Price Index rose 2.7% year-on-year in November, according ⁠to Labor Department data, compared with a 3.1% increase forecast by economists polled ‌by Reuters.

The dollar weakened 0.12% to 155.50 against the Japanese yen and was down 0.14% to 0.79405 against the Swiss franc.

"The margin of error shouldn't be this great and it is questionable whether what we got in this release is going to make its way into the more traditional data collection discussion," said Marvin Loh, senior global market strategist at State ⁠Street in Boston. 

"One of the things that ends up being a challenge in terms of changing expectations significantly is that we're already pricing in a Fed that gets to neutral within the next ​12 months. So you either need to aggressively push against the neutral and/or start believing that ‌there's a recession that will make you go below neutral and ⁠I don't think we're anywhere near there," Loh said.

The longest federal government shutdown in U.S. history had impacted data collection for the inflation report. The Federal Reserve tracks the Personal Consumption Expenditures Price Index for its 2% inflation target. 

President Donald Trump said on Wednesday the next Fed chair will be ​someone who believes in lower interest rates "by a lot".

All of the known candidates - White House economic adviser Kevin Hassett, former Fed Governor Kevin Warsh and current Fed Governor Chris Waller - advocate for interest rates to be lower than they are now.

CENTRAL BANK MOVES

The euro edged lower in choppy trading after the European Central Bank kept its policy rates steady and took a more positive view on a euro zone economy that has shown resilience to global trade shocks.

The euro was last ​down 0.14% at $1.17240 ‍against the dollar.

"Today's meeting offered no new information ​to change our view on the most likely policy path or the surrounding risk balance," Barclays analysts led by Mariano Cena said in an investor note. "We continue to expect the ECB to remain on hold for the next two years and see the risk tilted towards lower, not higher, policy rates over our forecast horizon."

The dollar index, which measures the greenback against a basket of currencies including the yen and the euro, edged up 0.06% to 98.435.

Sterling rose after the BoE delivered its fourth rate cut this year, although markets pushed back their expectations for further easing, with the next cut not fully priced until June, from ⁠April prior to the decision. 

Sterling strengthened 0.09% to $1.33846.

"Interest rate markets have reduced their bets on further easing, likely on account of both the finely balanced nature of upcoming decisions and the Governor's comment that room for further reductions ​is becoming more limited. Two-year sterling swap rates are roughly five basis points higher," said Tom Priscott, FX trader at Investec.

"The pound may have further room for upside as traders recalibrate their outlooks for 2026 through the afternoon," Priscott said.

The Swedish and Norwegian central banks both kept their main interest rates on hold, in line with expectations. The Swedish crown was last down 0.29% at 10.8855 per euro, while Norway's crown ‌was last down 0.52% at 11.9173 per euro. 

The Bank of Japan looks almost certain to raise short-term interest rates on Friday to 0.75% from 0.5% as high food costs keep inflation above the central bank's 2% target. 

(Reporting by Chibuike Oguh in New York and Samuel Indyk in London, Editing by Kirsten Donovan, Ed and Nick Zieminski)

Key Takeaways

  • Dollar weakens against yen and Swiss franc after US inflation data.
  • Euro eases following ECB's decision to hold interest rates steady.
  • US Consumer Price Index rose less than expected at 2.7%.
  • Federal Reserve's future interest rate policies remain uncertain.
  • Sterling rises as BoE cuts rates, impacting currency markets.

Frequently Asked Questions

What is inflation?
Inflation is the rate at which the general level of prices for goods and services rises, eroding purchasing power.
What is a central bank?
A central bank is a financial institution that manages a country's currency, money supply, and interest rates.
What are interest rates?
Interest rates are the amount charged by lenders to borrowers for the use of money, expressed as a percentage.
What is the Consumer Price Index (CPI)?
The CPI is a measure that examines the average change over time in the prices paid by consumers for a basket of goods and services.
What is foreign exchange?
Foreign exchange refers to the global marketplace for buying and selling national currencies against one another.

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