Oct 12th 2026 Chart of the Week: NZD/USD Technical Outlook & RBNZ Policy Divergence

• New Zealand CPI dynamics reveal a stark divergence, with surging imported tradable inflation (4.90%) offsetting domestic disinflation (3.40%).¹
  
• Westpac projects an additional 25-bps RBNZ rate hike to 3.00% in December² to counter lingering inflation pressures from power tariffs and fuel costs.
  
• NZD/USD broke below its multi-month narrowing formation, but extreme retail long sentiment (86%)³ and a 15-year COT net-long high hint at potential reversal risks.

New Zealand CPI dynamics reveal a significant structural divergence between tradable and non-tradable price components through mid-2026. While domestic core measures demonstrate sustained disinflation toward the Reserve Bank of New Zealand’s (RBNZ) target corridor, external supply shocks have driven a sharp acceleration in tradable inflation, complicating the macroeconomic outlook and policy rate trajectory.

In 2026, New Zealand’s inflation landscape underwent a sharp structural shift, defined by a dramatic surge in imported price pressures alongside stable domestic core metrics. Heading into mid-2026, the All Tradables Component (pink line) experienced a steep spike from near 2.00% up to 4.90% by June, overtaking all other metrics to become the main upward driver of headline inflation. This global trade shock pushed All Items (Headline CPI) (light blue line) back up to 4.10%. In contrast, domestic price pressures steadily abated throughout 2026, with the All Non-Tradables Component (white line) continuing its gradual multi-year decline down to 3.40% by June.⁴

Meanwhile, underlying core indicators remained remarkably anchored within or near the Reserve Bank’s 1%-3% target band in 2026 - including the 20% Trimmed-Mean (2.60%), All Items Less Food, Energy, and Fuels (2.50%), and the Weighted Median (2.30%). This widening gap in 2026 highlights that the mid-year acceleration in inflation was driven almost entirely by external, tradable cost shocks rather than overheating domestic demand.⁵

In its October 2026 economic update, Westpac reiterated its call for a lingering hawkish bias from the Reserve Bank of New Zealand (RBNZ) as sticky domestic costs and surging fuel prices keep inflation elevated. Following the central bank’s step up to a 2.75% Official Cash Rate (OCR) in September, Westpac economists expect the RBNZ to hold rates steady at its late-October meeting before delivering another 25-basis-point hike to 3.00% alongside the December Monetary Policy Statement. Westpac highlights that persistent increases in local council rates, power tariffs, and broader household energy costs are creating lingering price pressures, limiting the RBNZ’s policy flexibility. Coupled with a weaker New Zealand dollar and higher imported fuel costs - which Westpac projects will push annual CPI inflation back up to 4.2% in the final quarter of 2026 - the bank sees policy rates peaking higher than previously signaled, keeping the cash rate restrictive well into 2027 to ensure medium-term inflation fully returns to the 1%–3% target band.²

• As of April 2025, NZD/USD has been trading within a narrowing formation as marked by the black lines on the chart. Price action continued to find support and resistance along the pattern’s borders up to the end of September 2026. It broke below the pattern’s lower border in early October and has been trading below this level since then.
  
• The lower pattern border includes historical price levels where price action had previously found support, as marked by the black circles on the chart. The first level on the left side of the chart is an exhaustion gap that followed an extended downward trend that began in 2021.
  
• Although the price action closed below its support levels on the daily chart, it has yet to close below a critical level on the weekly timeframe.
  
  Please refer to the weekly chart analysis on October 2026: Central bank policy divergence and forex technical outlook
  
• As of October 1st 2026, price action has been trading within a narrow range bounded by the weekly R1 of 0.5633 and the weekly S1 of 0.55850. Other technical indicators fall within the same range, including the weekly PP of 0.56070, the fast SMA9, and the EMA9. The confluence of indicators within this range lends further weight to the price action around this level.
  
• Above current price action, upside resistance is defined by the weekly R2 at 0.5655 and the 21 SMA, both converging with the extended lower boundary of the broken narrowing formation (lower black line).
  
• Above that, additional resistance lies at the monthly PP of 0.5729, followed by the monthly R1 at 0.5833, and the monthly R2, which aligns with the upper boundary of the narrowing formation.
• The 14-day Relative Strength Index (RSI) aligns with current price action at 31, reflecting potential positive divergence.
  
• The Stochastic Oscillator also aligns with price movement, with both the %K and %D lines remaining coiled below oversold thresholds since mid-September 2026.

A review of the sentiment percentages in the Topical instruments tool shows a long position ratio of 86% for NZD/USD, compared to 59% for AUD/USD and 60% for EUR/USD.

As the NZD/USD, EUR/USD, and AUD/USD exchange rates have been dropping over the past few weeks, the current retail sentiment percentages comparison reflected in the position ratio suggests that, compared to its peers, NZD/USD retail positioning may have reached its extreme and could be up for a change in sentiment.

A review of the latest COT report issued on October 9th, 2026 (covering data up to October 6th) shows that New Zealand dollar open interest has been rising along with falling prices seen over the past few weeks, which was supportive of the price drop; however, the net long open interest level is currently at a 15-year high, suggesting a potential change in sentiment may be due.

In summary, New Zealand’s macroeconomic backdrop remains defined by a stark divergence, as surging tradable inflation offsets steady domestic disinflation, reinforcing a hawkish RBNZ policy stance.² While NZD/USD has broken below its multi-month narrowing formation, extreme long retail sentiment (86%)6 alongside a 15-year high in net long COT open interest suggests that positioning may be stretched and vulnerable to a bullish reversal. However, until technical price action reclaims key resistance levels, persistent external price pressures and prevailing momentum warrant a cautious near-term outlook.

Abbreviation list:

EMA: Exponential moving average

SMA: Simple moving average

RSI: Relative strength index

% K: Fast stochastic

% D: Slow stochastic

MACD: Moving average convergence divergence

Pivot point: PP

Support: S

Resistance: R

Footnotes

¹https://www.stats.govt.nz/indicators/consumers-price-index-cpi/

²https://www.westpaciq.com.au/economics/2026/10/nz-forecast-update-october-2026

³https://www.oanda.com/us-en/oanda-labs/topical-instruments/

⁴https://www.stats.govt.nz/indicators/consumers-price-index-cpi/

⁵https://www.rbnz.govt.nz/monetary-policy/about-monetary-policy/inflation
⁶https://www.oanda.com/us-en/oanda-labs/topical-instruments/