Japanese yen bounces on hot Tokyo inflation and BoJ hike talk.

Japanese yen bounces on hot Tokyo inflation and BoJ hike talk.

The Japanese yen found some support on Friday after a run of weakness. USD/JPY fell about 0.3% to around 157.60 in the European morning, having failed to hold above 158.00 on Thursday. The trigger was Tokyo's September inflation data, which came in well above forecasts and strengthened the case for another rate hike from the Bank of Japan (BoJ).

Even so, the bounce is modest. Japanese yields remain far below US yields, and that gap has kept the yen near its weakest levels in decades. Traders now watch two forces pulling in opposite directions: a BoJ that is turning more hawkish and a US bond market that keeps paying more.

USD/JPY, Friday morningAbout 157.60 (down 0.3%)
Tokyo core CPI (ex fresh food)2.7% in September (August 1.8%)
Tokyo CPI ex food and energy3.0% (August 2.0%)
Tankan, large manufacturers+24 (June +22, forecast +25)
Tankan, large non-manufacturers+35 (forecast +36)
Recent highs159.04 on 24 September; 160.39 on 2 September

Tokyo inflation surprises to the upside

Tokyo's consumer price figures arrive weeks before national data, so markets treat them as an early guide. In September, core inflation excluding fresh food jumped to 2.7% from 1.8% in August, well ahead of forecasts. A deeper measure that strips out both food and energy rose to 3.0% from 2.0%.

That second number matters most to the BoJ. Inflation outside food and energy suggests that price rises are spreading through the economy rather than coming only from imported fuel, which is the condition the bank has said it needs to keep raising rates.

What the Tankan and BoJ opinions showed

Thursday's Tankan survey, the BoJ's quarterly poll of business conditions, showed sentiment among large manufacturers improving to +24 from +22 in June, slightly short of the +25 forecast. Large non-manufacturers came in at +35 against a forecast of +36. Firms expect consumer prices to rise 2.6% a year, slightly down from 2.7% in the previous survey.

The BoJ's summary of opinions from its September meeting carried a sharper message. Some members said rate hikes may need to speed up if prices overshoot the 2% target, and that policy rates should move closer to the bank's targets relatively soon. A couple of members preferred to hold, arguing that underlying inflation had not yet settled above 2%.

Taken together, the data and the minutes keep a further BoJ hike firmly on the table. Each step up in Japanese rates narrows the gap with the US slightly, which is the yen's best hope of a lasting recovery.

Tokyo keeps warning about the weak yen

Japan's government has made clear it does not welcome a weaker currency. On 3 August Japan and the United States carried out a rare joint intervention to support the yen, confirmed by Finance Minister Satsuki Katayama. In late September Katayama said yen weakness remained a concern after a call with US Treasury Secretary Scott Bessent, and that both sides would stay in close contact to keep markets orderly.

On 2 October she added that Prime Minister Sanae Takaichi's government is united in the view that reflationary policy is over, and voiced support for the BoJ's fight against inflation. Markets read that as political cover for further rate hikes.

Traders widely see the 160 area as the line where authorities may act again. USD/JPY reached 160.39 on 2 September and 159.04 on 24 September before turning lower both times.

Interventions can move USD/JPY by several yen within minutes. If you trade the pair, keep stops in place at all times and avoid oversized positions near 160.

Why the carry trade keeps the yen weak

Investors around the world borrow in yen because it is cheap, then put the money into higher-yielding assets such as US bonds. This strategy, known as the carry trade, means a steady flow of yen being sold. While US 10-year yields sit above 5% and Japanese rates stay far lower, that flow is hard to stop.

Carry trades can unwind fast, though. When volatility spikes or Japanese rates rise unexpectedly, borrowers rush to buy back yen to repay their loans, and USD/JPY can drop several yen in a day. A BoJ hike, a weak US jobs report or a Tokyo intervention could each be the spark.

USD/JPY technical levels

LevelWhy it matters
160.392 September high and the zone where intervention fears peak
159.0424 September high, first major resistance
158.00Round number the pair failed to hold on Thursday
157.2620-day exponential moving average, near-term support
156.3830 September low; a break would open a deeper pullback

Momentum looks balanced. The 14-day RSI sits around 51, just above its midline, which signals neither overbought nor oversold conditions. Analysts describe the near-term bias as mildly bullish while the pair holds above the 20-day average.

Friday's US jobs report is the next big test. A strong number would likely push US yields and USD/JPY higher again; a weak one could send the pair towards 156.38. Our USD/JPY analysis has today's full trade plan.

What this means for traders

  • The rate gap still favours the dollar, so the main trend remains up while US yields stay above 5%.
  • Hotter Japanese inflation and BoJ hike talk make sharp yen rallies more likely than a few months ago.
  • The closer the pair gets to 160, the higher the risk of a sudden intervention move.
  • Overnight swaps on long USD/JPY positions are positive, but one intervention day can erase weeks of income.
Worked example

A trader sells USD/JPY at 157.60 with a stop at 158.40 (80 pips). On a mini lot (10,000 units), each pip is worth about $0.63, so the risk is roughly $51. If the BoJ signals a hike and the pair drops to 156.40, the gain is about $76. Check the pip value for your own size with our pip calculator.

Work out pip values on yen pairs with the pip calculator; they differ from dollar-quoted pairs.

Frequently asked

Why did the yen strengthen on 2 October 2026?

Tokyo core inflation rose to 2.7% in September, well above forecasts, and a measure excluding food and energy hit 3.0%. That raised expectations of another Bank of Japan rate hike, which supports the yen.

At what level could Japan intervene in the yen?

Japan never names a level, but traders watch the 160 area closely. Tokyo and Washington intervened jointly on 3 August 2026, and USD/JPY turned lower near 160.39 on 2 September.

What is the Tankan survey?

It is the Bank of Japan's quarterly survey of business conditions. A positive reading means more firms see conditions as good than bad. Large manufacturers scored +24 in September 2026.

Will the Bank of Japan raise rates soon?

The September summary of opinions showed some members open to faster hikes if inflation overshoots 2%, and Tokyo's hot CPI supports that view. Others preferred to wait, so the timing remains uncertain.

Why does the yen stay weak despite BoJ hikes?

US yields are above 5%, far higher than Japanese yields. As long as that gap stays wide, investors earn more by holding dollars, which keeps pressure on the yen.

Sources: FXStreet: USD/JPY, 2 Oct · investingLive: Tankan and BoJ opinions · Bank of Japan Tankan · Japan Ministry of Finance statement, 3 Aug · Nikkei Asia interview