The Bank of Japan knows the cure. Its government does not want it

THE BANK OF Japan raised interest rates in June, then did nothing in July, while telling the market that inflation would soon overshoot its target. The contradiction is deliberate, but not merely cautious. Behind closed doors, policymakers agreed that upward price pressures were mounting. Some wanted to act faster. Outside the bank, the government wanted them to act more slowly. The result is a monetary policy that is neither dovish enough to satisfy the government nor hawkish enough to anchor the currency.

The starting point is the rate decision itself. On June 16th the BOJ lifted its policy rate by 25 basis points to 1%, the highest level since 1995, according to its own announcement. It was widely expected, with 94% of economists polled by Reuters forecasting the move. But the summary of opinions, published later that month, revealed a board that was less comfortable than the headline suggested. One member noted that "Japan's policy interest rate remains below the estimated range of the neutral interest rate" - the level at which monetary policy neither stimulates nor restrains the economy - and argued it was "necessary to bring the policy rate closer to the neutral rate as soon as possible." The Financial Times observed that policymakers were worried about upside risks to inflation, though most did not see a case to accelerate tightening.

The hesitation tells its own story. Japan's inflation problem is structural, not cyclical. It stems from a yen that has slid to a 40-year low against the dollar, making every barrel of oil, shipment of wheat and container of semiconductors more expensive. It is compounded by the Middle East war, which effectively closed the Strait of Hormuz in February and sent energy prices soaring, before a preliminary US-Iran peace deal in June triggered a partial retracement. The BOJ itself warned in July that core inflation would accelerate to a level "clearly above" 2% from the second half of the fiscal year, driven by wage increases being passed through to prices, crude-oil costs and the yen's depreciation. At the July meeting Governor Kazuo Ueda told reporters that the bank "must scrutinise upside price risks more than ever."

Yet the BOJ held rates where they were. The July decision was 8-1, with board member Hajime Takata dissenting in favour of a hike to 1.25%. The board upgraded its growth forecast - a sign the economy is resilient enough to bear tighter policy - but trimmed its inflation estimate, reflecting falling oil prices and government subsidies shielding households from fuel costs. Core inflation in July stood at 1.6%, below the 2% target for most of 2026. The BOJ used the temporary reprieve to pause.

The problem is that the pause is feeding the very dynamic it is supposed to tame. A persistently low policy rate keeps the yen weak, which raises import costs, which pushes up inflation, which forces the BOJ to tighten - only for political pressure to slow the pace, which keeps the yen weak. It is a feedback loop, and the central bank is the only actor with the tools to break it.

To be sure, the BOJ has reasons for caution. Japan emerged from a decade-and-a-half of deflation only a few years ago, and the memory of premature tightening that kills fragile wage-price dynamics is vivid. Real interest rates - nominal rates adjusted for inflation - remain deeply accommodative even at 1%. The government's subsidies on fuel and food are deliberately designed to blunt the pass-through of higher import costs to consumers. And the Kumamoto earthquake in July added a new wildcard, hitting a region with major manufacturing and semiconductor plants.

But caution is not the same as constraint. The deeper problem is political. Prime Minister Sanae Takaichi, who took office in October last year, has long advocated loose fiscal and monetary policy. Her new economic blueprint, finalised in July, explicitly urges the BOJ to keep borrowing costs low so as to "bolster private demand" and align with the government's push to reflate growth. The blueprint invokes the legal provision requiring the central bank to coordinate with the government, even as Japanese law separately guarantees BOJ independence. The tension is not new - Ms Takaichi's reservations about further tightening came under parliamentary scrutiny as early as March - but the draft blueprint makes the government's preference for dovish policy explicit.

Ms Takaichi's fiscal ambitions provide the incentive for the policy preference. Her growth strategy targets more than ¥370tn ($2.3tn) in investment through fiscal 2040 across 17 strategic sectors, including artificial intelligence and semiconductors. Such spending is cheaper with low bond yields. A faster path of rate hikes by the BOJ would push Japanese government-bond yields higher, raising the cost of financing that agenda. The government wants the BOJ to provide monetary cover for fiscal expansion. The central bank is not inclined to oblige, but it is not moving fast enough to deny the request entirely.

The currency markets are punishing the stalemate. The yen touched 163.73 per dollar in late July before authorities intervened. Japan and the United States confirmed a coordinated yen-buying operation - the first such joint action since 1998, and the first involving both countries since the G7 acted to weaken the yen after the 2011 earthquake. The yen rebounded to 157.57. Reuters Breakingviews was unsparing: the intervention is "unlikely to have lasting impact: Tokyo's fiscal policy is anathema to a stronger yen."

The US participation adds an ironic twist. Washington's interest in a stronger yen is partly self-interested: Japan holds the largest foreign stash of US Treasuries, and a unilateral Japanese intervention that forced Japan to sell those bonds would destabilise American funding markets. The finance ministry has signalled it will use the Fed's FIMA repo facility - which lets foreign central banks obtain dollar liquidity without selling Treasuries - for future operations. That is prudent. But the US also has its own trade complaint. A currency trading at 163 to the dollar is a competitive advantage that the American administration sees as unfair. Coordinated intervention is thus a way for Washington to signal that the current level is unacceptable - and implicitly to pressure the BOJ into doing the job the Japanese government does not want it to do.

The BOJ finds itself in what Reuters Breakingviews called a "no-win scenario." Raising rates risks undermining political coordination and, by extension, the appearance of institutional independence. Holding steady risks a currency spiral that makes the inflation problem worse. The bank's published neutral-rate estimates put the true equilibrium well above 1%, yet the pace of tightening - one hike every six months, if markets are right - would take years to close the gap.

The stronger case, from the BOJ's own framework, is to accelerate. The bank's own forecasts admit that core inflation will exceed its 2% target. Its own summary of opinions acknowledges that the policy rate is below neutral. Its own governor says upside price risks must be scrutinised "more than ever." If the BOJ wants to prevent a scenario where imported inflation becomes embedded in domestic wage and price expectations, the first step is to move the policy rate towards the neutral level at a pace the market can believe.

The cost of doing so is real. Higher bond yields would increase the financing cost of Ms Takaichi's fiscal programme. The government would have to prioritise - either by reining in spending, raising revenues, or accepting lower growth. None of these options is politically easy. But the alternative is to let the yen weaken further, subsidies mount, and inflation expectations drift, until the BOJ is forced to move faster anyway, in conditions that are even more disorderly. A ¥370tn investment programme funded by a currency trading at 170 is no programme at all.

The BOJ does not need the government's permission to raise rates. It needs the government to accept the arithmetic. The central bank's dilemma is self-inflicted to the extent that it continues to pause while its own forecasts and its own dissenters argue for more. The next meeting, in September, will be the first real test. The aim should be to close the gap between what the BOJ knows and what it does.

That bargain is breaking.