July 2026

Between April and May 2026, Japan’s Ministry of Finance executed a record ¥11.73 trillion ($73.35 billion) in foreign exchange intervention — nearly twice its previous largest effort when USDJPY surpassed ¥160. Despite the unprecedented scale and the Bank of Japan’s recent hike of its benchmark rate to 1% (the highest in over three decades), the yen quickly retraced above the intervention threshold within six weeks, absent any comparable catalyst. The yen’s persistent decline underscores the limits of Japan’s ongoing monetary policy normalization initiated in 2024.

The yen’s weakness reflects widening US-Japan interest rate differentials, fiscal strains in Japan, elevated US Treasury yields, and the BOJ’s gradual pace of tightening. Persistent wage growth and the Takaichi administration’s fiscal expansion have pushed Japanese inflation breakevens (market expectations of average inflation derived from the spread between nominal and inflation-linked bonds) higher. While the BOJ is normalizing its policy, it is perceived as lagging the cycle. Inflation expectations are driving repricing in long-maturity yields and the currency, while the front-end of the JGB curve remains constrained by the gradual monetary policy normalization. A sustainably stronger yen would likely require either a more hawkish BOJ that redefines its reaction function or credible fiscal adjustments that compress inflation premia. Both of those, however, appear improbable under the current administration.

The Bank of Japan maintained its short-term policy rate at 1% after raising it at the previous meeting. The decision followed a sharp overnight surge in the JPY against the USD on 30 July, a move widely interpreted as government intervention. While keeping rates steady, the BOJ reiterated its readiness to tighten further should inflation risks intensify, noting that the balance of risks remain skewed to the upside. Significantly, for the first time, the central bank acknowledged that underlying inflation may exceed its 2% target — an indication of heightened concern. The BOJ is expected to proceed with gradual rate increases, though mounting volatility in USDJPY suggests that continued JPY weakness could lead the market to anticipate an earlier rate hike. 

June 2026

 

Although the US–Iran truce has lifted market sentiment, the economic consequence from the conflict still persists. Central banks continue to grapple with elevated energy prices, subdued consumer confidence and the risk of renewed tensions. The BOJ has flagged Middle East development as a major risk, noting that energy-importing economies like Japan are particularly exposed when oil markets turn volatile and supply chains face disruption. 

Raising interest rates can slow down the economy, but moving too cautiously can pose an even greater risk of inflation. Bank of Japan’s deputy governor mentioned that swift monetary policy adjustments are essential to bring inflation to the target, sustain it and support the long-term growth.

 

BOJ defended its decision to lift the short-term policy rate to 1%, a 31-year high to prevent underlying inflation from overshooting its 2% target. A recent surge in wholesale prices can spill over to consumer inflation in the coming months. Should inflation accelerate sharply, the BOJ could raise rates again in October and once more before the fiscal year ends in March. As corporate profits remain strong and the labour market is tight, inflationary pressures outweigh the risk of an economic slowdown. In this case, BOJ will stay focused on fighting inflation. 

 

May 2026

 

After BOJ intervened in the currency market to support Yen and the USDJPY slid to 155.09 showing a sharp, sudden moves lower from 160 level. BOJ left rates unchanged in its April meeting, but signalled it is ready to hike rates in the face of rising inflation. BOJ is expected to hike in June. BOJ’s hiking in June will reinforce its independence.  

 

April 2026

 

Although current Japanese economy is not in stagflation with inflation remains around its target and growth still holding above potential, prolonged Middle East conflict can create rising inflation with weakening economic activities. Due to the strain of higher fuel costs put on households, price pressures are building and consumer sentiment has already begun to deteriorate. Inflation impulse is driven by external shocks rather than by strong domestic demand.

 

A temporary spike in costs is less likely to warrant aggressive tightening from BOJ but a sustained period of elevated energy costs can push inflation higher while eroding growth (stagflationary risk), which will require more complex policy response navigating between inflation control and economic support.

 

BOJ left interest rate unchanged keeping its short-term policy rate at 0.75%. Next hike is expected to come as early as June due to growing concern over energy-driven inflation caused by Iran war. Ignoring upward price pressures can exacerbate side effects coming from yen weakness which can cause higher import costs. What investors may want to see is policy normalization, a controlled withdrawal from buying long-dated JGBs which has been suppressing JGB yields. If BOJ continues its bond-buying operation, it may lose its policy credibility. Also, if BOJ does not show a clear willingness to raise interest rates, the risk is high that the yen could weaken sharply once again. BOJ is also facing the dilemma of tightening policy into an energy price shock that is not only inflationary but also growth destructive.