Core CPI in Japan has now been above the BOJ's 2% target for 45 consecutive months as of January 2026.1 Let that number sit for a moment. For a country that spent the better part of three decades fighting deflation, printing money in quantities that would have been considered science fiction in the 1990s, and watching its central bank buy everything from government bonds to equity ETFs to keep prices from falling, this is not a minor data point. It is a regime change. The question that markets are not yet answering cleanly is what a regime change in Japanese inflation actually means — for monetary policy, for the JGB market, for corporate balance sheets, and for the equity investor trying to position around all of it.
The standard narrative handles this story superficially. Inflation came from energy. Energy subsidies dampened it. Wages are rising but only at large companies. The BOJ is moving cautiously. Nothing to see here. That framing gets the individual facts roughly right and the structural conclusion completely wrong. What is happening in Japan is not a temporary cost-push episode that will normalise back to the old equilibrium. It is the beginning of a fundamental repricing of the deflationary psychology that has dominated Japanese economic behaviour since the asset bubble collapsed in 1990. That repricing has enormous implications and most of them are still sitting in the future.
The deflation psychology and why it mattered so much
To understand why this inflation episode is different, you need to understand what deflation did to Japanese corporate and consumer behaviour over thirty years. It was not just a price level phenomenon. It was a complete reordering of incentives. If prices are going to be lower next year than they are today, the rational consumer delays purchases. The rational company delays investment. The rational CFO hoards cash rather than deploying it because cash gets more valuable in real terms every year while capital spending generates returns that are worth less tomorrow than they appear today. These are not irrational responses. They are exactly what the textbook predicts, and Japan lived through all of them simultaneously for a generation.
The corporate side was particularly damaging. Japanese companies accumulated extraordinary cash reserves not out of laziness or poor governance, though those were also present, but because the deflationary environment made cash accumulation the rational capital allocation strategy. A yen sitting in a bank account was a yen that gained purchasing power as prices fell. This is one reason, alongside the governance failures discussed in J-1, why so many Japanese companies ended up with net cash balance sheets that exceeded their market capitalisations. The cash was not an accident. It was a rational response to three decades of falling prices. Changing that behaviour requires not just a new governor at the BOJ. It requires a genuine, sustained, believable shift in the inflation regime — the kind that changes the mental model of every CFO and consumer in the country.
Thirty years of deflation did not just suppress prices. It rewired how every company and every household in Japan thought about money, time, and risk. That rewiring does not reverse in a quarter or two.
The wage story is the one that matters
What separates the current inflation episode from prior false dawns in Japan is the wage dynamic. Japan has had inflation spikes before, driven by imported energy costs or yen weakness, that faded as quickly as they arrived without generating any domestic wage momentum. The reason those episodes did not stick is that Japanese companies, conditioned by decades of deflationary psychology, absorbed cost increases rather than passing them on, and labour unions, conditioned by the same psychology, did not push aggressively for wage compensation. The Shunto negotiations — Japan's annual spring wage-setting ritual — were a largely ceremonial exercise for most of the post-bubble era, consistently delivering increases well below the level needed to sustain domestic demand-driven inflation.
That changed in 2024 and has accelerated in 2025. The 2025 Shunto delivered an average wage increase of 5.25%, the largest in 34 years, with base pay rising 3.82% stripping out seniority-based increases.2 More significantly, Rengo's targets for the 2026 Shunto are asking for 5% or more again, with an explicit goal of achieving 1% positive real wages for workers — meaning wages growing 1% faster than inflation rather than simply keeping pace.3 This is a qualitatively different demand than anything Japan's labour market has produced in living memory. And the early response data from large employers suggests the momentum is not reversing.
The critical question is whether this wage dynamic spreads beyond large corporations to the small and medium enterprises that employ the vast majority of Japan's workforce. SMEs account for roughly 70% of employment, and their wage dynamics have historically lagged large firms significantly.4 The 2025 Shunto showed SMEs achieving around 5% average increases, roughly matching large firms for the first time in decades, though Nomura Research's analysis suggests the final tally for SMEs will come in somewhat lower once all firms report. The direction is clear. The speed and durability of the broadening remain the key variable for anyone modelling the inflation trajectory.
The BOJ's impossible position
The Bank of Japan ended its negative interest rate policy in March 2024, raised rates twice through 2024, and brought the policy rate to 0.75% by December — a level not seen in thirty years but still deeply negative in real terms against an inflation rate running at 2-3%.5 The IMF, in its latest assessment, called for Japan to continue raising rates toward neutral by 2027 and explicitly warned against the fiscal stimulus being proposed by Prime Minister Takaichi, including a proposal to suspend the food consumption tax for two years.6 The tension between an expansionary fiscal stance and a BOJ trying to normalise monetary policy is not new in Japan's history. It is, however, particularly acute right now.
Governor Ueda has been careful and methodical in his communication. The BOJ's stated position is that it will continue raising rates if the economic and inflation outlook develops in line with projections. The projections themselves have been consistently revised upward. Core CPI forecasts for fiscal 2025 stood at 2.7% in the BOJ's own outlook as of late 2025, with a gradual return toward 2% projected for 2026 and 2027.7 Markets are pricing additional hikes in 2026. The BOJ's own dot plot equivalent implies rates approaching 1-1.5% within the next two years if the baseline holds. What that path looks like against a backdrop of weakening global growth, US tariff uncertainty, and a Japanese economy that contracted in both the second and third quarters of 2025 is genuinely uncertain.8
What the JGB market is not yet telling you
The Japanese Government Bond market is the largest single pool of fixed income securities in the world, and it spent decades as the most predictable market on earth. The BOJ owned so much of it through its quantitative easing programmes — at peak, somewhere around half of the entire outstanding stock — that price discovery had effectively ceased. Yields were capped, then targeted, then nudged higher in carefully managed increments as the BOJ attempted to exit its extraordinary policy stance without triggering the kind of disorderly repricing that would bankrupt half the country's financial institutions.
The JGB market's response to the current inflation and rate normalisation story has been, by global standards, remarkably orderly. The 10-year JGB yield, which spent years pinned close to zero, has moved toward the 1% range and is being watched carefully for signs of the bond market vigilance that Japan has historically been able to avoid precisely because domestic institutional investors — life insurers, pension funds, regional banks — had nowhere else to go and a cultural disinclination to bet against their own government's debt. That calculus is changing at the margin as rates rise globally and the alternatives to JGBs become incrementally more attractive. The BOJ's plan to reduce its JGB purchase programme gradually through 2026, from around 400 billion yen per quarter down to 200 billion yen, is the controlled demolition of the most elaborate bond market support operation in financial history.9 It has gone well so far. It only has to go badly once.
The equity implications: who wins, who doesn't
Inflation in Japan is not uniformly good or bad for equities. It depends entirely on the business model. Companies with genuine pricing power — the ability to pass cost increases to customers without losing volume — benefit directly from an inflationary environment in ways they have not been able to for thirty years. Japan has many such companies. Niche manufacturers with dominant positions in specialised industrial components, software providers with sticky enterprise relationships, healthcare and elder care businesses serving an ageing population with inelastic demand: these are the businesses where pricing power has sat dormant for a generation, not because it did not exist but because the deflationary environment made exercising it competitively risky. That constraint is dissolving.
On the other side, companies with significant yen-denominated debt and limited pricing power are in a more complex position as rates rise. The era of essentially free capital that has persisted in Japan since the late 1990s is ending. For the hundreds of zombie companies that have survived on the artificial life support of near-zero borrowing costs, the normalisation of interest rates is an existential question. Japan's banking system has been aware of this dynamic for years and has been quietly managing credit exposure in anticipation. But the pace of normalisation matters enormously. A rate path that moves too fast for the economy to absorb could surface credit problems that have been invisible at zero rates. A path that moves too slowly leaves real rates deeply negative and risks an uncontrolled inflation overshoot. The BOJ is threading a needle that no major central bank has attempted in quite this configuration before.
The bigger picture: a new mental model for Japan
The most important implication of Japan's inflation shift is not captured in any near-term earnings model or rate forecast. It is the gradual, uneven, but ultimately irreversible change in the mental model of every economic actor in the country. When Japanese consumers start believing that prices will be higher next year than this year, they stop hoarding cash and start spending now. When Japanese companies start believing that wage increases are permanent features of the cost environment rather than temporary aberrations, they accelerate the repricing of products and services that has been suppressed for decades. When Japanese boards start facing real cost of capital for the first time in a generation, the capital allocation decisions that have been deferred or avoided look very different.
None of this happens in a straight line or on a predictable schedule. Japan's social and institutional fabric moves deliberately. But the direction is established in a way it was not five years ago. The thirty-year deflationary consensus is broken. The 45 consecutive months of above-target inflation are not going to be entirely undone by a few rounds of government utility subsidies or a snap election. What Japan is working through right now is the slow, uncomfortable, genuinely consequential process of repricing an economy that has been frozen at the wrong price level for most of a generation. For investors with the patience and framework to position around that process, the opportunity set is substantial. For investors still using the pre-2022 Japan mental model, the risk of being wrong is equally large.