Japan has crossed a monetary frontier that an entire generation believed was almost gone. On Friday, September 18, 2026, the Bank of Japan raised its key interest rate from 1% to 1.25%, its highest level since 1995. The figure may seem modest compared to American or European standards. However, in a country long associated with rates close to zero, or even negative, this quarter-point increase carries a much broader message: the era of almost free money is also closing in Tokyo.
The decision comes at the end of a two-day meeting and confirms the normalization process initiated after decades of fighting deflation. According to the Associated Press, Governor Kazuo Ueda explained that the Japanese economy is continuing a gradual recovery, while inflation is approaching the 2% target. The war in Iran, energy prices, demand related to artificial intelligence, and currency movements are among the risks observed by the institution.
A 31-Year High That Changes the Japanese Narrative
For years, Japan has embodied the global laboratory for ultra-accommodative monetary policies. Low inflation, hesitant growth, and an aging population have led the central bank to maintain exceptional conditions to stimulate credit and demand. The shift to 1.25% does not mean that the Japanese economy has become overheated. Rather, it indicates that authorities now consider it more dangerous to let prices and currency drift than to gradually increase financing costs.
On the same day, the Bank of Japan released its new guidelines for money market operations. This official document gives the decision concrete implications: the uncollateralized overnight rate should evolve around 1.25%. For banks, businesses, and households, this benchmark ultimately influences loans, savings, bonds, and investment choices.
The Yen Paradox After the Increase
In theory, a rate hike makes a currency more attractive. However, the yen weakened after the announcement, exceeding 157 yen per dollar according to data reported by AP and Cinco DÃas. This seemingly contradictory reaction serves as a reminder of an essential market rule: the price of an asset depends less on the announcement itself than on the gap between the decision and what was already anticipated.
Investors had largely priced in the increase. They primarily noted the absence of a significantly more aggressive signal for the future, as well as divisions within the board. Two members opposed the move, according to market reports. Thus, while the increase was historic, its tone was not enough to convince that Tokyo would immediately accelerate the pace.
Why This Decision Extends Far Beyond Japan
Japan is one of the world’s major holders of financial assets. When Japanese yields rise, local investors may find it more appealing to keep their money in the archipelago rather than buying American or European bonds. Even a gradual rebalancing can influence international rates, currencies, and state financing.
The move also impacts carry trade strategies, where players borrow in low-cost yen to invest in higher-yielding assets elsewhere. If the cost of Japanese money increases or if yen volatility intensifies, some positions become less profitable. Their reduction can amplify market movements, particularly in technology stocks, bonds, and emerging currencies.
Asian Markets Choose Relief
The Tokyo Stock Exchange did not receive the decision as a shock. The Nikkei 225 rose by about 1.4% in Friday’s trading, buoyed also by the rebound of Wall Street and the easing of oil prices. In South Korea, the Kospi advanced more strongly, while Hong Kong and Shanghai also moved into the green, according to AP.
This positive reaction does not eliminate risks. It shows that the most feared scenario â a brutally restrictive central bank â did not materialize. Investors received an expected increase, accompanied by cautious rhetoric. In the short term, this combination may support stocks. In the medium term, attention will shift to inflation, wages, and the timing of future increases.
What This Changes for Households and Businesses
For Japanese households, higher rates may improve the yield on savings, which has long been almost zero. However, they also make new loans more expensive and may increase certain variable monthly payments. Heavily indebted companies will need to factor in a higher financial burden, while those with cash reserves could better remunerate their liquidity.
The yen remains another decisive variable. A weak currency increases the cost of imports, particularly energy and raw materials, and weighs on purchasing power. Conversely, it benefits exporters when their foreign revenues are converted into yen. The Bank of Japan is therefore attempting a delicate balance: calming imported inflation without undermining a still fragile recovery.
A World Where Major Central Banks Tighten Together
The Japanese decision comes in an unusual environment, following rate movements in the United States and Europe. High energy prices, geopolitical tensions, and massive investments in AI blur the usual trajectories. Central banks must combat price pressures while avoiding triggering a sharp slowdown.
In this context, Tokyo is no longer the immobile exception of the financial system. Its return to positive and higher rates forces investors to recalculate risk value everywhere. For France and Europe, the effect may pass through bond yields, exports, luxury goods, automobiles, and the euro-yen parity. The Japanese signal spreads well beyond the archipelago.
The Next Battle Will Be Over Credibility
The Bank of Japan must now demonstrate that it can continue normalization without triggering disorder. A too-slow increase would leave the currency and prices under pressure. A too-rapid increase would threaten consumption, investment, and the stability of a bond market accustomed to massive central bank support.
The rate of 1.25% is therefore not just a 31-year record. It marks the moment when Japan ceases to be a footnote in the global monetary cycle. The world is watching Tokyo because Japanese money flows through international markets. And when the cost of that money changes, even by a quarter point, the ripple effect can traverse the entire planet.
