Published by Global Banking & Finance Review®
Posted on October 21, 2025
3 min readLast updated: January 21, 2026
Add as preferred source on GoogleThe yen weakened after Sanae Takaichi's election as Japan's PM, with potential fiscal changes affecting currency markets and strengthening the dollar.
By Hannah Lang
NEW YORK (Reuters) -The yen eased to a one-week low on Tuesday after hardline conservative Sanae Takaichi was elected as Japan's prime minister, with traders betting her government could muddy the interest rate outlook and bring about a greater fiscal largesse.
Takaichi, the first female PM and leader of Japan's ruling Liberal Democratic Party, won the lower house vote on Tuesday to choose the next prime minister. The move was widely expected by investors after she was backed by the right-wing opposition party Ishin.
The Japanese currency was last down 0.76% at 151.895 per dollar, after earlier touching its lowest level against the dollar since October 14, in its biggest single-day fall in two weeks. The yen also struggled against the euro and sterling.
Earlier on Tuesday, local media reported that Takaichi had finalized a plan to appoint Satsuki Katayama, a former regional revitalisation minister, as finance minister.
During an interview with Reuters in March, Katayama signaled her preference for a stronger yen. Her appointment could give markets cause to rethink the idea of pushing the yen too low.
"We continue to assume that inflation and the purchasing power of private households will remain important issues for the new government in order to improve public approval," said Volkmar Baur, FX & Commodity Analyst at Commerzbank.
"Therefore, the new government is unlikely to support a depreciation of the Japanese yen," Baur added.
Still, Takaichi's support for fiscal stimulus and looser monetary policy kept investors on edge and complicates the Bank of Japan's path for rate increases.
"From a political perspective ... there may be considerations to delay monetary tightening until fiscal easing gains traction. The BOJ is thus caught between a rock and a hard place," HSBC chief Asia economist Fred Neumann said.
DOLLAR FIRMS
In the broader market, currencies were mostly rangebound despite an overall upbeat market mood after U.S. President Donald Trump said on Monday he expects to reach a trade deal with Chinese President Xi Jinping. White House economic adviser Kevin Hassett also said that the 20-day U.S. federal government shutdown was likely to end this week.
Jitters over credit risks among U.S. banks also dissipated slightly.
The dollar index, measuring the currency against six peers drew support from a weaker yen and rose to a six-day high. It was last up 0.312% to 98.921.
European Central Bank's chief economist Philip Lane said on Tuesday that euro zone banks may come under pressure if U.S. dollar funding - the lifeblood of financial markets - were to dry up, amid concern over Trump's policies.
Dollar funding fears have been at the back of central bankers' minds since Trump announced a wave of trade tariffs and began putting pressure on the Federal Reserve earlier this year.
The euro fell 0.3% against a strengthening dollar to $1.161, little helped by easing political uncertainty in France.
Sterling was down against the dollar despite data on Tuesday showing Britain's borrowing in the first half of the financial year was the highest since the pandemic, as investors said a tough budget next month is priced in.
(Reporting by Hannah Lang in New York; additional reporting by Joice Alves in London and Rae Wee in Singapore; Editing by Kim Coghill, Chizu Nomiyama, Will Dunham and Alexander Smith)
The yen is the official currency of Japan, symbolized by ¥. It is one of the most traded currencies in the world and is used as a reserve currency.
Monetary policy refers to the actions taken by a country's central bank to control the money supply and interest rates to achieve economic objectives.
Foreign exchange rates are the prices at which one currency can be exchanged for another. They fluctuate based on market demand and supply.
Economic growth is the increase in the production of goods and services in an economy over a period, often measured by GDP.
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