USD/JPY continued its upward trajectory on Wednesday, a move that defies expectations. Although the Bank of Japan (BoJ) raised its policy rate last week to 1.00% — its first increase in three decades — to cushion the yen, the currency continued to weaken, underscoring the dominant influence of the widening interest‑rate differential with the United States, where the Federal Reserve has adopted a more hawkish stance.
The gap swallowed the hike
The BoJ increased its policy rate to a 30‑year high of 1.00%, yet the market had already priced in the move, leaving the yen without meaningful support. The arithmetic remains stark: the FOMC’s rate near 3.75% and a forward‑looking dot plot signaling further hikes maintain a spread of roughly 275 basis points, a level that renders a modest quarter‑point adjustment in Tokyo insignificant for the carry trade, keeping the yen’s direction dictated by Washington.
What a hike could not do, Yentervention might
The failure of the rate hike to support the yen indicates that the next risk to the trade is political rather than monetary. As the BoJ shows little willingness to act aggressively and the recent hike has been largely ignored, the Ministry of Finance may be the sole entity able to intervene, especially given the yen’s weakness to a generation low. Until Tokyo employs Yentervention, the carry trade continues to appear as effortless profit, and each additional move accentuates the underlying asymmetry.
Thursday’s double bill
Thursday’s data agenda is pivotal. At 12:30 GMT, the core Personal Consumption Expenditures (PCE) price index — the Fed’s preferred inflation gauge — is expected to register a 0.3% month‑over‑month increase and a 3.4% year‑over‑year rise, both slightly above the prior month’s figures. A stronger‑than‑expected reading would widen the already‑significant rate gap, potentially propelling USD/JPY above 162.00, while a weaker outcome could temper the upward momentum.
Later, at 23:30 GMT, the Tokyo Consumer Price Index (CPI) will be released. A softer reading near the recent 1.4% headline would suggest the BoJ has no urgency to raise rates again, and even additional hikes may have limited impact given the minimal effect of the previous increase on the yen.
Levels to watch
Resistance: The 162.00 level serves as the immediate cap; a clean break could allow the pair to test 163.00, though each additional advance heightens the likelihood of intervention.
Support: A pullback would likely find footing near 161.50, with 161.00 acting as a secondary floor. Only a slide toward the 50‑day exponential moving average (EMA) around 159.50 would indicate that the uptrend may be losing momentum.
Bias: Higher. A hawkish Fed, a pronounced rate gap and an uptrend that shrugged off the BoJ hike all point in the same direction. The clearest threat to the long side is not the chart or the central bank but the finance ministry.
USD/JPY daily chart
Japanese Yen FAQs
The Japanese yen (JPY) ranks among the most actively traded currencies globally. Its valuation primarily reflects the health of the Japanese economy, but is especially influenced by the Bank of Japan’s monetary policy, the yield differential between Japanese and U.S. bonds, and prevailing risk sentiment among market participants.
A key mandate of the Bank of Japan is to influence currency value, making its actions pivotal for the yen. While the BoJ has occasionally intervened directly to weaken the yen, it does so sparingly because of political sensitivities from major trading partners. The ultra‑loose monetary stance adopted from 2013 to 2024 contributed to yen depreciation against other major currencies as the policy gap with other central banks widened. Recent steps to unwind that policy are now providing modest support to the yen.
In the past decade, the BoJ’s prolonged ultra‑loose policy heightened divergence with other central banks, especially the U.S. Federal Reserve. This widening gap between 10‑year U.S. and Japanese bond yields favored the U.S. dollar over the yen. The 2024 BoJ decision to gradually exit ultra‑looseness, together with rate cuts in other major economies, is reducing the yield differential.
The yen is frequently regarded as a safe‑haven asset. During periods of market stress, investors tend to allocate capital to the yen because of its perceived stability and reliability, which tends to strengthen its value relative to higher‑risk currencies.