Bank of Japan raises rates to 1.25%: what the 31-year-high decision means for the yen, global markets and Japan's economy

The Bank of Japan raised its short-term policy rate from 1.0% to 1.25% on Friday, 18 September 2026, the highest level for the rate since 1995. The decision, announced at around 13:00 Tokyo time (04:00 GMT) at the end of a two-day meeting, was carried by a 7 to 2 vote of the nine-member Policy Board and takes effect on 24 September 2026.

Two features of the announcement reached beyond the number. The two dissenting votes belonged to Toichiro Asada and Ayano Sato, the two academics who joined the board this year on Prime Minister Sanae Takaichi's nomination. And the yen, which a rate rise would ordinarily be expected to support, barely moved: it had been trading near 156 to the dollar before the announcement, having weakened through the week, and stayed close to those levels afterwards.

The yen's response had less to do with Tokyo's decision than with one made in Washington two days earlier. On 16 September the Federal Reserve raised its own target range by 25 basis points, to 3.75%-4.00%, its first increase since 2023. Two central banks moved in the same direction by the same amount within seventy-two hours, and the distance between their rates, the number that governs the economics of borrowing in one currency to invest in another, ended the week where it began.

The decision, as the Bank recorded it

The BOJ's statement, published on its website as the meeting closed, is precise about the mechanics. The Board voted to "encourage the uncollateralized overnight call rate to remain at around 1.25 percent", the call rate being what banks charge one another for overnight loans, and the rate the BOJ actually steers. The complementary deposit facility, which pays banks on excess reserves held at the BOJ, moves to 1.25%, and the basic loan rate rises to 1.5%. All three changes take effect on 24 September.

The statement also records who voted how. For the hike: Governor Kazuo Ueda and board members Himino Ryozo, Uchida Shinichi, Takata Hajime, Tamura Naoki, Koeda Junko and Masu Kazuyuki. Against: Asada Toichiro and Sato Ayano. Asada's recorded reason was that, with the CPI increase below 2% in recent months, the economic situation could not necessarily be described as strong; Sato's was that economic and price developments did not appear to have substantially accelerated. Two other members, Takata and Tamura, dissented from the statement's price outlook in the opposite direction, arguing that underlying inflation had already reached the 2% level the Bank targets. The nine-member board, in other words, disagreed in both directions at once, over a 25-basis-point move that financial markets had largely priced in: swaps pricing quoted before the meeting put the probability of a hike at roughly 83%.

The dissents, and the government that appointed the dissenters

Asada, a Chuo University professor who has written in favour of large-scale stimulus, and Sato, of Aoyama Gakuin University, were nominated to the board in February 2026 and approved by the lower house of the Diet in March. Financial press coverage of the nominations, Reuters described the prime minister as having "got her doves in a row", treated them as signalling a government preference for looser money while it pursues an expansionary fiscal programme.

Their votes on 18 September match that description, but the record stops there. Each dissenter gave a stated reason grounded in the inflation data, and no evidence has emerged that the government directed their votes. What the vote does establish, factually, is that the two most recently appointed members opposed the hike on their stated reading of the data, and that the majority for further tightening now stands at seven of nine rather than unanimity. How durable that margin is will become clearer at the Bank's next meeting on 28 October.

Why the Bank is tightening into inflation that is still below target

The BOJ's statutory target is 2% inflation, "sustainably and stably." On the latest national figures, August 2026, released by the Statistics Bureau on 21 August, headline consumer prices rose 1.9% from a year earlier and core CPI, which excludes fresh food, rose 1.7%. Read alone, those numbers support the dissenters' position: inflation has not reached the target.

The majority's case rests on what sits behind the headline rate. The statement describes three forces pushing prices up from underneath. Business-to-business price increases have begun spilling into consumer prices. Firms are passing wage rises into selling prices, continuing the wage-price dynamic the Bank has spent two years trying to establish. And medium- to long-term inflation expectations have continued to rise. Underlying inflation, the Bank judges, is "approaching 2 percent", and its outlook section projects headline CPI accelerating "to a level clearly above 2 percent from the second half of fiscal 2026."

All three forces are imported or externally driven, which is what makes them awkward for an import-dependent economy to wait out. Crude oil prices have risen since early spring on Middle East supply risk, and Japan imports nearly all of its energy, so the rise flows directly into electricity, fuel and materials costs. The yen's weakness raises the yen price of everything bought abroad; the statement explicitly lists "the recent depreciation of the yen" among the price pressures. And the global build-out of artificial-intelligence infrastructure is raising semiconductor and related input prices, a channel that runs through Japan's own industrial base, which supplies much of the chipmaking materials and equipment the build-out consumes.

The Bank's arithmetic runs both ways, and the statement is candid about the loop: holding rates down keeps the yen weak, a weak yen raises import prices, and higher import prices then justify the tightening the Bank deferred. Waiting is not a neutral option; it is a choice with a measurable price. Moving while inflation is still below target, by contrast, costs less than moving after inflation expectations have re-anchored higher, the pattern that consumed the Bank once before, in the 1970s, and that its modern leadership has studied as the cautionary case.

How the decision came together

The vote was assembled over months through the Bank's standard machinery. Its eight scheduled meetings a year each set a guideline for the intermeeting period; the corridor of rates around that guideline, what banks earn on reserves, what they pay to borrow from the BOJ, is what pulls the overnight market rate to the target. That is why the statement's changes to facility rates are not technical footnotes: they are the mechanism that makes 1.25% bind in the money market from 24 September.

Three developments set up the September outcome. In early September, Governor Ueda told reporters that "a rate hike will be discussed thoroughly in every meeting, including the next one", for a central bank that historically avoided forward commitments, a deliberate signal. Tokyo-area CPI data released at the end of August showed core Tokyo inflation at 1.8%, with the measure excluding food and fuel at 2.0%, the leading indicator for the national figures that followed. And the government's fiscal stance, expansionary by design, has itself added demand; the statement credits "the government's various measures" as a support to the economy, a formulation that acknowledges the fiscal-monetary mix the Bank must work around.

The rate itself, at 1.25%, is the highest since 1995, levels last used before the Bank's two-decade deflationary era, and by a board whose members all took office long after. Every step of the normalisation since March 2024, when the BOJ ended the world's last negative-rate regime, has been taken in 25-basis-point increments with an explicit meeting-by-meeting review. That cadence reflects unfamiliarity with the destination as much as caution: the Bank is pricing money at levels the policy framework last sustained in 1995, and it has said it will keep examining "the impact of the situation in the Middle East, the expansion in AI-related demand, and developments in foreign exchange rates" at each step.

What the Bank actually said about the economy

The statement's assessment section, often skipped in the rush to the rate decision, carries the Board's own description of conditions, and it is more mixed than the headline decision suggests.

Exports and industrial production, the Bank writes, "have started to increase, albeit moderately," against the backdrop of what it calls a "solid increase in global AI-related demand." Corporate profits are at high levels. Business fixed investment is on a moderate increasing trend, though dented by rising construction costs. Private consumption has been resilient as employment and income conditions improved, but the Bank notes weakness in household sentiment. Housing investment is on a declining trend, and public investment has been flat. The labour market, by contrast, is described as tight, with a continuing sense of labour shortage, the condition that keeps the wage-price mechanism the Bank prizes alive.

On prices, the statement's projection is the operative document for the months ahead: headline CPI is expected to accelerate "to a level clearly above 2 percent from the second half of fiscal 2026" as oil, semiconductor prices and the weak yen feed through, then to settle toward around 2% in the second half of the projection period as those effects wane. Underlying inflation is projected to reach a level consistent with the 2% target between the second half of fiscal 2026 and fiscal 2027 and stay there. That forecast is the load-bearing wall of the decision: if it holds, the majority's case is made; if it does not, the dissenters' caution looks better with each release.

Two members formally objected to that price outlook from the hawkish side, Takata and Tamura, who wanted the statement to say underlying inflation has already reached the target. The disagreement inside the Board is thus not about whether inflation exists but about how far ahead of it the Bank should position itself.

The Fed moved first, and that changed what the BOJ's move meant

The Federal Reserve's decision on 16 September reframed the BOJ's. The FOMC voted 12 to 0 to raise the federal funds target range to 3.75%-4.00%, its first increase since 2023, and American equities fell on the news, with the Dow Jones Industrial Average dropping more than 600 points on the day (Reuters and Wall Street Journal coverage of the 16 September session). The Fed's separately released Summary of Economic Projections showed individual participants' assessments of the appropriate year-end 2026 policy rate clustering around 4.00%-4.25%; those projections are participants' judgments rather than a committee commitment, and the Fed's own materials describe them as such.

For the dollar-yen pair, the sequence produced an unusual result. Both policy rates rose 25 basis points inside three days, so the gap between them, roughly 2.6 percentage points, measured from the federal funds midpoint of 3.875% to the BOJ's 1.25%, was unchanged from the start of the week.

The gap matters because it prices the most common currency trade in the world: borrowing yen at low cost to hold dollar assets yielding more. That spread is the carry trade's income, and the yen's level reflects its health. With the gap unchanged, a BOJ hike that would ordinarily support the currency arrived with no change in the trade's economics, which is a large part of why the yen did not gain. Exchange rates also move on expectations of what comes next, on positioning, and on risk sentiment, so the unchanged gap is the proximate explanation rather than the only one; but the arithmetic is the place any explanation starts.

The week's deeper significance is directional. Japan's policy rate has risen six times since March 2024 while American rates, after this week's move, are rising again too. If the Fed's participants' projections cluster near 4.25% by end-2026 and the BOJ continues along the path its statement describes, the gap narrows from both ends, the configuration that, historically, has been when the yen's carry unwind risk becomes a market event rather than a market conversation.

The Middle East channel, concretely

The statement's most-repeated caveat, "the situation in the Middle East", appears five times, and it is doing real work in the Bank's arithmetic. Japan imports virtually all of its oil, much of it from Gulf producers whose shipment routes have been under pressure since the spring. The statement attributes the rise in crude prices "since early spring" to that situation, and describes its effects in both directions: higher oil pushes measured inflation up (which argues for tightening) while pushing economic activity down (which argues for waiting).

The transmission into Japanese prices runs through identifiable steps. Crude lands at coastal refineries priced in dollars; the yen's weakness this year has raised the yen cost of every dollar-denominated barrel; refiners pass those costs into wholesale fuel and petrochemical prices; and those feed the electricity tariffs, transport costs and plastics inputs that appear in the CPI basket. The Bank's projection that headline inflation will run "clearly above 2 percent" in the second half of the fiscal year rests substantially on this chain continuing. Equally, its warning that the Middle East situation warrants "particular attention" reflects the reverse risk: a disruption severe enough to depress growth would complicate the tightening path even as it raises measured prices.

This is why an energy-importing central bank watches tanker routes as closely as wage data, and why the two dissents' argument that inflation is "below 2 percent now" has to contend with an oil-and-currency impulse that the national CPI figures for August only partly captured.

Six hikes, on the record

Because the cycle's shape is best read from the decisions themselves, the record so far, each step taken by the Bank's own statement:

The intervals between moves have widened and narrowed, four months, six, eleven, six, three, which is itself information: the Bank moves when the data allow, not on a schedule. The three-month gap to this meeting is the cycle's fastest, and it reflects the oil-and-yen price pressure of the summer rather than any announced timetable.

What reaches households, firms and the banks

The call rate is not a price most Japanese families ever see, but its consequences arrive through bank pricing with a lag of weeks to months. Japanese banks fund themselves partly at rates tied to the BOJ's policy corridor; when that corridor rises, the cost of their funding rises, and loan pricing follows. Variable-rate mortgages, the dominant mortgage product in Japan, repricing at intervals against short-term rates, feel the move first. A household with an outstanding variable-rate loan faces higher payments as its bank reprices; a firm rolling over working-capital credit pays more at renewal. On the other side of the ledger, deposit rates, stuck near zero for a generation, edge up, slowly, and by less than policy rates, which is precisely how Japanese banks restore margins crushed by decades of zero rates.

The Bank's own framing of this trade-off appears in the statement's observation that financial conditions "have been accommodative" and real interest rates "remained at low levels," with firms' demand for funds increasing and banks' lending attitudes proactive. In plain terms: even at 1.25%, credit in Japan is still cheap in real terms while inflation runs near 2%. The Board is tightening from unusually loose territory, which is why it describes the change as an "adjustment of the degree of monetary accommodation" rather than a turn against growth.

The distributional arithmetic is uneven by design of Japan's financial system. Households holding the bulk of their savings in deposits lose slowly to inflation; banks and the government, as major issuers of long-term fixed-rate debt, gain time as repricing works through years rather than weeks. The government's interest bill is the largest single exposure: with general government gross debt at about 200% of GDP, the highest ratio among advanced economies, per IMF data published this month, each basis point on short-term rates eventually reaches the budget, though the long average maturity of Japanese government bonds delays and dilutes the flow.

The trade that connects Tokyo to every asset market

The carry trade works like this in practice: a fund borrows yen at rates near the BOJ's 1.25% policy rate and associated market rates, converts the proceeds to dollars, and buys US Treasury bills, equities or other assets yielding several percentage points more. The spread, scaled by leverage, is the return. As Japanese rates rise, the borrowing leg becomes more expensive; each 25-basis-point BOJ hike trims the spread on every existing position and raises the bar for new ones.

Positions rarely close because of a single hike. They close when volatility forces leveraged holders to meet margin calls, and the assets most liquid get sold first, which is how a Tokyo rate decision can end up pressing stock indices in New York and Frankfurt. That sequence ran in August 2024, when a BOJ hike and weak US jobs data coincided with a violent unwind: the Nikkei recorded its steepest single-day fall since 1987 and the turbulence spread across global equity markets. The mechanism is documented; its magnitude this time depends on how large the outstanding positions are, which no public dataset measures precisely, and on how fast the gap narrows.

Two data points frame the current exposure. The ten-year Japanese government bond yield slipped past 2.9% in mid-August as markets priced faster BOJ tightening (Nikkei Asia, 17 August 2026) and traded near 3% this week, 2.99% on 18 September, per Trading Economics data, a level last seen in the mid-1990s, before the zero-rate era. Both measure the same thing from different angles: the cost of yen borrowing is rising across the curve, at a pace faster than at any point in this cycle.

Japanese banks sit at the centre of that system as major cross-border lenders, and yen funding lines run through Southeast Asian corporates, trade finance and leveraged investment vehicles worldwide. As yen funding reprices upward, marginal borrowers pay more or move to other currencies, a slow-moving effect that accumulates with each hike rather than announcing itself in any single session.

The constraints that shape every further step

Four constraints bound how far and how fast the Bank can go, and each is visible in the September statement.

The government's balance sheet is the largest. Japan's general government gross debt stands at about 200% of GDP, the highest ratio among advanced economies, according to IMF data published this month (F&D, September 2026). Each increase in short-term rates flows into the government's interest bill as debt is rolled over, the average maturity of Japanese government bonds is long, which slows the transmission, but the direction is one-way and the scale is large. The Finance Ministry's stake in how fast the BOJ moves is structural, and the appointment of the two dissenters has given a voice inside the Policy Board to views closer to the government's.

The economy's softness is the second. The statement itself notes weakness in part of the economy "partly due to the impact of the situation in the Middle East," describes housing investment as on a declining trend, and records softness in household sentiment. Private consumption has been resilient, employment and income conditions have improved, but the Bank is tightening into growth that is moderating, not accelerating, and it says financial conditions "have been accommodative" even at the new rate, an acknowledgment that 1.25% in real terms remains expansionary while inflation runs near 2%.

The third is the Bank's own credibility, on both sides. Move too slowly, and the oil-yen feedback loop pushes inflation and expectations above target, forcing a sharper cycle later. Move too fast, and the Bank risks importing the August 2024 scenario: a carry-unwind shock that hits Japanese equities first and spreads outward. The 25-basis-point cadence with meeting-by-meeting review is the visible compromise between those failure modes, and nothing in the September statement suggests the Bank intends to change it.

The fourth is the vote itself. A 7 to 2 margin is workable but no longer comfortable, and the two dissenters' stated reasoning, inflation still below target, no substantial acceleration, will remain available to them, and to any colleague persuaded by it, at the October meeting. Central banks rarely reverse course on the strength of dissenting votes alone, but the size of the majority shapes how much tightening the market believes the Board can deliver.

What the evidence supports, and where it stops

The Bank's thesis, that Japanese inflation is becoming domestic and durable, has visible support. Wage pass-through into prices is documented in the statement's language and in the corporate price-setting behaviour the Bank describes. Tokyo's August leading indicators ran ahead of the national figures. Medium- to long-term inflation expectations, per the statement, "have continued to rise."

The counter-evidence is equally concrete: national headline inflation of 1.9% and core inflation of 1.7% remain below the 2% target; housing investment is falling; and household sentiment is soft. If the Bank's assessment proves too confident, the places it would show first are the autumn Tokyo CPI prints, the 2027 shuntō wage-round data, the exchange rate, and third-quarter GDP. Those are the published series a reader can check against the Bank's projection as they arrive, starting with Tokyo's September data in late October and national CPI in mid-October.

What the record does not yet settle is the destination. The Bank's statement commits to continuing to raise rates in response to developments but specifies neither a terminal level nor a timetable. The distinction between guidance and commitment matters: the September statement points toward further increases if the outlook develops as projected, and says nothing binding about either.

What comes next, on the calendar

Several dated events will carry the next information. Governor Ueda's post-decision press conference, held on 18 September after the statement's release, is the first: his language on the pace of future moves is parsed by markets for exactly this purpose. Tokyo's September CPI arrives in the final week of October, a day or two after the BOJ's next meeting ends on 28 October; national September CPI follows in mid-October; and the government's autumn fiscal package, the spending programme the Bank's statement acknowledges as demand support, lands against a Bank now openly counting its inflationary effect.

Three paths present themselves. If October's Tokyo data confirm the Bank's projection of accelerating inflation, a further 25-basis-point move in December is the outcome most economists' published forecasts anticipate, though forecasts are estimates, not pricing, and the vote margin is the number to watch alongside the rate. If oil spikes or growth disappoints, a pause at 1.25% becomes the likelier branch, as the statement's own risk language ("attention continues to be warranted") provides the Bank with room to wait it has used before. And if the yen weakens well beyond the levels of recent weeks, the territory where the Finance Ministry has previously judged intervention warranted, the pressure would run toward faster tightening rather than slower, because a sliding yen feeds the import-price loop the Bank is trying to contain. None of these paths is fixed; each is the reading of the statement's own conditional language under different data.

The week that reframed the yen

Friday's decision did not move the yen, but it moved the conditions around it. Japan's policy rate is now at its highest since 1995, on a stated path toward further increases, in a week when the Federal Reserve also tightened. The dollar-yen gap that finances the world's largest leveraged trade is, for the moment, unchanged, but it now sits between two central banks that are both moving in the same direction, and the arithmetic of the carry trade worsens for its holders with every step either takes that the other does not match. The next test of that arithmetic arrives with Tokyo's inflation data in late October, and the market that shrugs off 25 basis points at a time has twice in this cycle learned what a cumulated series of them can do.