Bank of Japan Strengthens Its Case for Further Policy Rate Hikes

After decades of deflationary pressures and exceptionally low interest rates, the Bank of Japan (BoJ) is entering a new policy cycle. Having raised its policy rate to 0.75 percent in December 2025, the central bank is arriving at a policy environment it has not seen in close to three decades.

The transition reflects a structural transformation of Japan’s macroeconomic landscape: from entrenched deflation and negative interest rates to a regime where growth, wages, and prices are normalising.

The BoJ has noted that underlying price dynamics remain on an upward trajectory. Furthermore, the Japanese yen has weakened past the 160 per dollar level for the first time since mid-2024, amplifying the cost of energy and other imports in domestic currency terms.

Higher prices of imported inputs translate into consumer prices, as firms pass on higher input cost to their goods. Core measures of prices, which exclude items such as energy and fresh foods, show inflation remains significantly above the 2 percent target of monetary policy.

In this article, we discuss the key factors underpinning the BoJ’s tightening path.

First, the shift in Japan’s wage-price dynamics calls for additional policy rate increases.

The 2026 “Shunto” spring wage negotiations have delivered another round of robust results, with overall wage hikes settling in the range of 5 percent to 7 percent, marking the third consecutive year of increases above 5 percent.

Rengo, Japan’s largest union federation, reported average wage demands of close to 6 percent from over 2,500 member unions, confirming that proactive wage-setting behaviour has become entrenched across the corporate sector. 

This wage momentum is gradually feeding into services inflation, the component most reflective of domestic demand conditions.

In this context, there is increasing confidence that the wage-price mechanism is supporting the case for further policy normalisation.

Second, the BoJ’s estimation of the neutral interest rate provides policy space for further gradual tightening. 

The neutral rate of interest is the level that neither restrains nor stimulates the economy, an interest rate below this level provides stimulus to the economy.

The BoJ recently released an updated estimate of Japan’s neutral rate, which in nominal terms places it in a range of 1.1 percent to 2.5 percent, reflecting a recovery in Japan’s potential growth rate.

At a current policy rate of 0.75 percent, even a further 25 basis point (b.p.) hike to 1.0 percent would position the BoJ at the lower bound of the estimated neutral range, meaning that monetary policy would remain slightly accommodative.

Thus, the neutral rate framework reinforces the view that the BoJ has room to continue raising rates without exerting a contractionary effect on economic activity.

Third, the geopolitical environment and an energy shock are adding further pressure for the BoJ to continue tightening.

The ongoing conflict in the Middle East, which escalated sharply in late February 2026, has triggered a massive energy price shock. Brent crude surged from approximately USD 72 per barrel before the conflict to above USD 110 in late March, a rise of over 50 percent in a single month.

For Japan, which imports nearly all of its oil and sources roughly 90 percent of it from the Middle East, the implications are directly inflationary. Rising crude prices transmit through fuel, freight, and broader consumer prices, creating an inflationary impulse that reinforces the case for tighter policy.

The BoJ’s March Summary of Opinions reflected this, with some board members suggesting that rate hikes may be warranted if energy-driven inflation persists. In this context, the energy shock is strengthening the case for the BoJ to continue normalising monetary policy.

All in all, the BoJ is strenghtening its case for policy rate normalization and further rate hikes.

The consolidation of a wage-price mechanism, a neutral rate framework that confirms room for further tightening, and geopolitical developments that amplify inflationary pressures all point towards continued policy normalisation.

Market expectations broadly signal a rate hike to 1.0 percent by mid-2026, with the terminal rate likely settling in a range of 1.25 percent to 1.5 percent depending on the evolution of wages, energy prices, and the yen.