Key Takeaways
The Bank of Japan held rates at 0.75% but saw a 6-3 dissenting vote -- the largest split since Governor Ueda took charge -- with three members pushing for an immediate hikeMarkets are now pricing a 74% probability of a BOJ rate hike on June 16, per BloombergThe BOJ raised its core inflation forecast to 2.8% for the fiscal year while cutting its economic growth projection to 0.5% from 1%The yen rose, pushing USD/JPY down nearly 0.5% to 158.95; BTC/JPY fell 0.6% to 12.28 million yen on bitFlyerLondonCryptoClub founders argue the yen carry trade unwind narrative is overstated, pointing to Japan's continued US Treasury purchases as evidence carry trades remain active
The Bank of Japan kept its benchmark rate unchanged at 0.75% on Tuesday but delivered a hawkish surprise through the composition of its vote, with three board members dissenting in favor of an immediate rate hike -- the largest policy split since Governor Kazuo Ueda assumed leadership of the central bank.
The 6-3 vote outcome immediately shifted market expectations, with traders pricing in a 74% probability of a rate hike at the BOJ's June 16 meeting. That reading aligns with the pre-existing consensus among BOJ watchers, who had widely anticipated a June move, but the scale of dissent at this meeting accelerated the timeline in market pricing.
Inflation Up, Growth Down
The BOJ accompanied its decision with updated economic projections that reflect the stagflationary pressures building across energy-import-dependent economies. The central bank raised its core inflation forecast to 2.8% for the current fiscal year -- a direct consequence of war-related disruptions to energy flows through the Strait of Hormuz driving up global energy prices. At the same time, the BOJ cut its economic growth projection to 0.5% from a prior forecast of 1%, acknowledging the growth headwind from the same conflict.
The combination of higher inflation and lower growth is forcing the BOJ toward tightening even as the economy slows -- a difficult policy environment that mirrors the stagflation dilemma facing the Federal Reserve.
Yen Strengthens, Carry Trade Fears Resurface
The yen responded immediately to the hawkish vote, pushing the USD/JPY pair down nearly 0.5% to 158.95 -- a notable move for a major currency pair. Rate hike expectations typically strengthen the funding currency, and the yen's rise raised immediate questions about a potential repeat of the August 2024 carry trade unwind that sent Bitcoin from $65,000 to $50,000 in the space of a week.
The BTC/JPY pair on bitFlyer fell 0.6% to 12.28 million yen, consistent with broader dollar-denominated weakness in Bitcoin following the BOJ announcement.
The carry trade concern stems from Japan's decade-long ultra-low rate environment, which encouraged traders to borrow cheaply in yen and deploy capital into higher-yielding assets globally -- including equities, bonds, and crypto. Yen appreciation reverses the economics of that trade, theoretically triggering forced unwinding of yen-funded positions and driving risk aversion across asset classes.
But the Carry Unwind Thesis Has Skeptics
Not everyone is convinced the carry trade risk is as acute as the narrative suggests. The founders of LondonCryptoClub pushed back firmly, pointing to Japan's continued accumulation of US Treasury notes as evidence that yen-funded carry trades remain active rather than being unwound.
"Japan, the largest foreign holder, raised its stockpile by $14 billion to $1.24 trillion, the highest since February 2022. This marks Japan's 13th monthly purchase of the last 14 months, as Japanese institutions continue chasing higher yields overseas," they wrote, adding: "There is no JPY carry unwind trade. Those who are talking about that don't understand how Japanese investors operate and you should ignore them."
The latest available flow data from February supports that view, suggesting the structural dynamic driving Japanese institutional capital into overseas assets remains intact despite the BOJ's hawkish tilt.
Bitcoin's Near-Term Risk
For crypto markets, the BOJ decision adds a layer of macro uncertainty to an already crowded risk calendar that includes the Fed's final Powell-chaired meeting, megacap tech earnings, and Bitcoin's ongoing battle with the $80,000--$82,000 resistance zone. Whether the June rate hike expectation translates into actual carry trade pressure on risk assets will depend heavily on the pace of yen appreciation and the scale of leveraged yen-funded positions that remain active in global markets.