TL;DR: Strong Japanese GDP and wage data have pushed a September BoJ hike to near-certainty, and while AUD/JPY and NZD/JPY are both falling on Yen strength, the underlying stories differ — Australia’s hawkish RBA narrative is meeting domestic resistance, while New Zealand’s tightening path has failed to convince markets it will extend.

Strong Japan Data Gives the Yen Rally Fresh Fuel

The Yen’s advance accelerated on Tuesday as another round of stronger Japanese data reinforced expectations for a September BoJ hike and shifted attention toward how quickly tightening could continue afterward. Revised Q2 GDP showed the economy expanding 0.4% q/q, up from the preliminary 0.3%, while annualized growth was upgraded from 1.1% to 1.4%. Capital expenditure was also revised to a smaller 0.9% decline from the initially reported 1.2% fall. Private consumption was flat, but the overall picture was one of an economy holding up well enough to reduce the case for delaying normalization.

The wage data were more decisive. Nominal cash earnings accelerated from a revised 4.0% to 4.7% y/y in July, the strongest increase since 1997 and well above expectations around 3.8–3.9%. Real wages rose 2.4%, base pay increased 4.1%, and a cleaner full-time measure excluding bonuses, overtime, and sampling distortions still gained 2.7%. The breadth of the improvement makes the report harder to dismiss as a summer-bonus distortion and strengthens the wage side of the BoJ’s normalization case.

Markets have responded accordingly. A September hike to 1.25% is now priced at around 98%, while another increase to 1.50% by January is effectively fully discounted. Longer-dated pricing points to roughly 3.7 cumulative hikes by July 2027, making the debate less about whether the BoJ moves next week and more about the pace of what comes afterward.

September Is Nearly Settled. The Next Hike Is the Bigger Question.

That shift is also appearing in policy commentary. Takuji Aida, an economic adviser to Prime Minister Sanae Takaichi and member of a key government economic panel, said on Monday that the BoJ is likely to raise rates in September and continue at roughly a quarterly pace through January 2027 before slowing the cadence.

The significance isn’t simply that Aida expects another hike. He had previously seen the next move coming in January 2027 and has now brought that forecast forward to September. Coming from an adviser associated with an administration traditionally more tolerant of accommodative policy and a weaker Yen, the shift reinforces the impression that the hurdle for near-term tightening has fallen.

The next test is whether markets are right to extrapolate that into a sustained cycle. Japan’s wage data provide stronger support for normalization, but private consumption remains flat and household spending has been weak. Those demand indicators will matter increasingly once September is delivered. For now, however, the relative-rate story is moving decisively in the Yen’s favor.

AUD/JPY: Australia’s Hawkish Story Runs Into Domestic Weakness

AUD/JPY is being hit from both directions. Japan has just delivered stronger growth and wage data that reinforce the BoJ’s tightening case. Australia, meanwhile, produced a pair of releases showing how uncomfortable its own economy is becoming with the possibility of higher rates.

NAB Business Conditions fell from 4 to -1 in August, turning negative for the first time in six years. Profitability collapsed from 1 to -9, its weakest post-COVID reading, as purchase-cost growth of 2.3% q/q continued to outrun product-price growth of just 0.8%. Trading conditions weakened as well, although employment held comparatively firm.

Consumer data told a similar story. Westpac–Melbourne Institute Consumer Sentiment dropped 5.2% from 88.9 to 84.4 in September, with households becoming markedly more concerned about future borrowing costs. The Mortgage Rate Expectations Index rose from 158.8 to 170.4, while 64% of consumers — and around 73% of mortgage holders — now expect mortgage rates to rise over the coming year.

That doesn’t mean the RBA tightening story has disappeared. July inflation was strong enough to keep another hike live, and Westpac itself says the probability of a future move has increased. But Westpac still expects the RBA to hold at the September 28–29 meeting, arguing one monthly inflation print is insufficient to justify an immediate response.

The important point for AUD/JPY is therefore not that Australia has suddenly become dovish. It’s that the RBA’s hawkish narrative is meeting growing domestic resistance just as the BoJ’s hawkish narrative is gaining credibility.

ActionForex’s Technical View on AUD/JPY: Approaching a Major Breakdown Point

The technical structure reflects that shift. AUD/JPY’s decline from 114.95 has accelerated, and the pair is now approaching 109.25, an important structural support level. The daily MACD had already developed bearish divergence, raising the possibility that 114.95 marked a medium-term top.

A firm break of 109.25 would strengthen the case that AUD/JPY is correcting the larger advance from 86.03, opening the way toward the 38.2% retracement at 103.90.

Near-term downside could nevertheless become stretched. The four-hour RSI is deeply oversold and the daily RSI is close to 30, leaving room for an initial rebound from 109.25 even if the larger structure has turned lower. Such a recovery wouldn’t materially change the near-term bearish bias while 112.78 resistance holds, with the 55-day EMA just above around 112.98.

NZD/JPY: A Different Problem, and a More Advanced Breakdown

NZD/JPY is weaker for a different reason. The RBNZ raised rates for a second consecutive meeting last week, but markets have remained reluctant to extrapolate that action into a much faster tightening path. That leaves the Kiwi with a familiar problem: policy is already tightening, yet investors aren’t becoming progressively more hawkish about what follows.

There’s no equivalent same-day domestic shock behind NZD’s weakness. Instead, this has been a slower repricing over several sessions. Against a Yen whose expected tightening path is moving in the opposite direction, that divergence is becoming costly.

The difference is visible technically as well. NZD/JPY has already broken 91.02, the kind of structural support AUD/JPY is only now approaching at 109.25.

ActionForex’s Technical View on NZD/JPY: Targeting 89.44 After Breaking 91.02

The decline from 95.42 is now seen as correcting the broader rise from 79.79, with daily MACD bearish divergence adding to the medium-term topping risk.

The immediate focus is on the 38.2% retracement of 79.79–95.42, at 89.44. A decisive break there would deepen the correction and target the 61.8% retracement around 85.76, just above the larger structural support at 85.33.

As with AUD/JPY, short-term oversold conditions could generate rebounds. The daily RSI is already deeply depressed and four-hour momentum is stretched. But while 92.28 resistance holds, recoveries would still look corrective within a broader bearish structure.

Japan Is Starting to Win the Relative-Rates Argument

The common force behind both crosses is Yen strength, but the Australian and New Zealand sides shouldn’t be treated as interchangeable. AUD/JPY is falling because the BoJ tightening case is strengthening at the same time Australia’s hawkish RBA story is encountering evidence of softer household demand and squeezed business margins. NZD/JPY is further advanced because markets have been reluctant to extend the RBNZ tightening path even after consecutive rate increases.

That distinction matters because the larger shift isn’t simply toward risk aversion. For years, high-beta Yen crosses benefited from the assumption that almost every other major central bank offered a more credible tightening path than the BoJ. That assumption is now being challenged from both directions.

Japanese wages are accelerating, growth has been revised higher, and markets are pricing a sustained BoJ cycle. At the same time, the RBA’s tightening case is colliding with increasingly fragile domestic conditions, while the RBNZ has yet to convince markets that consecutive hikes will turn into a substantially longer campaign.

The BoJ decision on September 17–18 is therefore only the first confirmation point. The bigger question is whether Japan’s data continue to validate the aggressive tightening path now embedded beyond September. For AUD/JPY and NZD/JPY, that distinction is already showing up in price: one is approaching a major breakdown; the other has already made it.

Key Takeaways

• Japan’s Q2 GDP was revised up to 1.4% annualized and wages jumped to 4.7% y/y, the strongest since 1997, pushing a September BoJ hike to a near-certain 98% probability.
• AUD/JPY is falling because Australia’s hawkish RBA case is colliding with weakening business conditions and consumer sentiment, even as the BoJ case strengthens.
• NZD/JPY is more advanced in its breakdown because markets haven’t extended the RBNZ’s two consecutive hikes into a longer expected tightening cycle.
• AUD/JPY is approaching 109.25 structural support, with a break opening 103.90; NZD/JPY has already broken 91.02 and is targeting 89.44 and then 85.76.
• The broader shift challenges a long-standing assumption that other central banks are more credible tightening stories than the BoJ, now being tested from both the Australian and New Zealand sides.