Why the yen is crashing: Japan’s currency hits 18-month low, intervention fears grow

The Japanese yen slid to its weakest degree in 18 months on Wednesday, heightening hypothesis that authorities in Tokyo might step in to help the forex as issues develop over fiscal enlargement and political uncertainty.

The yen weakened as a lot as 0.2 per cent to 159.45 per greenback, its lowest degree since July 2024, earlier than paring some losses following a verbal warning from Japan’s finance minister. The slide was compounded by weak demand at an public sale of five-year Japanese authorities bonds, highlighting investor unease over the nation’s fiscal outlook.

Market strain has intensified amid rising hypothesis that Prime Minister Sanae Takaichi may name a snap election subsequent month, a transfer that would pave the way in which for aggressive fiscal stimulus and better public spending.

The forex has now misplaced round 3 per cent in opposition to the greenback in simply two months, rekindling reminiscences of Tokyo’s forex interventions in April and July 2024, when authorities stepped in after comparable fast declines.

“With dollar-yen nearing 160, merchants are very a lot on alert,” mentioned Jeremy Stretch, head of G10 FX technique at CIBC Capital Markets. “The main target just isn’t solely on the extent but in addition on how rapidly the yen is transferring. Different yen crosses, reminiscent of euro-yen, are additionally surging to report highs.”

Japan’s Finance Minister Satsuki Katayama sought to regular markets by warning that officers would take “acceptable motion in opposition to extreme international change strikes with out excluding any choices,” briefly knocking the greenback all the way down to round 158.87 yen earlier than it edged again greater.

In the meantime, the U.S. greenback held close to a one-month excessive in opposition to main currencies after American inflation knowledge got here broadly in keeping with expectations, reinforcing bets that the Federal Reserve will hold rates of interest on maintain later this month—regardless of mounting political strain from the White Home to chop charges.

Markets are additionally watching a possible U.S. Supreme Court docket ruling on the legality of President Donald Trump’s emergency tariffs, which may inject contemporary volatility into world forex and bond markets.

In opposition to this backdrop, the euro traded flat close to $1.1647, and sterling rose 0.2 per cent to $1.3448, whereas the offshore Chinese language yuan held regular round 6.98 per greenback, following knowledge displaying China closed 2025 with a report commerce surplus.

For now, merchants say the yen’s trajectory will hinge on political developments at dwelling and the way lengthy Tokyo is keen to tolerate additional weak spot earlier than drawing a line within the sand.