Key Highlights 

  • Annual CPI inflation reached 3.1% in the December 2025 quarter, breaching the RBNZ's 1-3% target band 
  • All major institutions (RBNZ, Treasury, banks, NZIER) forecast inflation between 1.9-2.3% by December 2026 
  • Core inflation averages 2.4% — within the target band but stubbornly above the 2% midpoint 
  • One-year-ahead inflation expectations rose to 2.59%, the highest in over a year 
  • Key wildcards include Middle East oil prices, electricity costs, and the pace of economic recovery  

Introduction 

New Zealand's inflation story has taken an unexpected twist in early 2026. After nearly two years of steady disinflation — from a peak of 7.3% in mid-2022 to 2.2% by September 2024 — the annual CPI has rebounded sharply to 3.1%, breaching the Reserve Bank of New Zealand's target band and upending market expectations. 

The question now is whether this uptick represents a temporary blip — driven by volatile energy and food prices — or the beginning of a more persistent inflation problem that will reshape monetary policy, asset prices, and household budgets through 2026 and beyond. 

This article provides the most comprehensive analysis available of New Zealand's inflation forecast for 2026, drawing on projections from the RBNZ, the Treasury, all four major banks, the NZIER, the OECD, and the IMF. It examines the key drivers of inflation, the components that are rising fastest, the factors that could push inflation higher or lower than expected, and the implications for monetary policy, investment strategy, and household financial planning. 

Where Inflation Stands Today 

The December 2025 quarter CPI reading of 3.1% represented a significant upside surprise. The annual rate increased from 3.0% in the September quarter, and exceeded both the RBNZ's target band ceiling and market consensus expectations. 

On a quarterly basis, the CPI rose 0.6% in Q4 2025, following a 1.0% increase in Q3 2025. While the quarterly pace moderated, the annual figure's persistence above 3% signalled that disinflationary progress had stalled. 

The composition of the December quarter inflation was dominated by housing-related costs. Electricity surged 12.2% annually — the steepest increase since Q1 1989. Local authority rates rose 8.8%. Rents increased 1.9%. These three items, all within the housing and household utilities expenditure group, were the single largest contributors to the annual CPI figure. 

Transport costs also contributed. International air transport jumped 7.2% in the quarter, while petrol prices rose 2.5%. On the offsetting side, vegetable prices fell 16.5% in the quarter, driven by seasonal declines in tomatoes, cucumbers, and leafy greens. 

Core inflation — the average of the RBNZ's suite of measures that strip out volatile items — sits at 2.4%. While this is within the 1-3% target band, it remains stubbornly above the 2% midpoint. The stalling of core inflation's descent, after falling rapidly from above 5% in 2022-2023, is a key concern for policymakers and markets. 

The RBNZ's Inflation Forecast 

The Reserve Bank's February 2026 Monetary Policy Statement provides the central forecast for New Zealand's inflation trajectory. The RBNZ projects that annual CPI inflation will decrease to near the 2% target midpoint by the March 2027 quarter. 

More specifically, the RBNZ expects headline inflation to decline as non-tradables inflation returns to around 3% and tradables inflation drops to approximately 1%. The tradables component — which captures internationally-influenced prices including imported goods, fuel, and travel — is expected to moderate as global supply chain pressures ease and commodity price volatility subsides. 

Non-tradables inflation, which reflects domestically-generated price pressures, is the stickier component. At around 5% in recent quarters, non-tradables inflation has been the primary driver of above-target CPI. The RBNZ expects this to decline as spare economic capacity constrains pricing power, wage growth remains modest, and the effects of previous rate hikes continue to work through the economy. 

The RBNZ's confidence in its inflation forecast rests on several key assumptions: that the OCR remains at or near 2.25% through mid-2026, that global commodity prices stabilise, that domestic wage growth remains contained, and that inflation expectations stay anchored near 2%. If any of these assumptions prove wrong, the forecast could be significantly off track. 

Bank and Institutional Forecasts 

All four major New Zealand banks — ANZ, ASB, BNZ, and Westpac — forecast inflation returning to within the RBNZ's target band by late 2026, though they differ on the exact path and the risks around it. 

ANZ projects CPI inflation settling around 2.0-2.3% by Q4 2026, consistent with the RBNZ's view. ANZ emphasises that while the headline number will decline, non-tradables inflation will be the last component to normalise, keeping core measures elevated through mid-2026. 

ASB expects inflation to return to around 2% by late 2026, with risks tilted slightly to the upside. ASB highlights the impact of electricity price deregulation, insurance premium pressures, and council rates as factors that could keep non-tradables inflation elevated for longer. 

BNZ's forecast centres on inflation reaching the 2% midpoint by early 2027, with the path through 2026 seeing CPI around 2.0-2.5%. BNZ views the current OCR as the terminal rate for this cycle, with rate hikes not commencing until early 2027. 

Westpac has the most hawkish inflation view among the major banks. While forecasting CPI around 2.0-2.3% by year-end, Westpac emphasises sticky core inflation as a reason rate cuts are off the table and hikes are likely from December 2026. Westpac's concern is that services inflation and rising expectations will prevent a clean return to 2%. 

The NZIER (NZ Institute of Economic Research) consensus forecasts show inflation around 2.0% by the year ending March 2027, with growth of 2.8% for the same period. The Treasury forecasts are broadly aligned, projecting inflation stabilising near the target midpoint by late 2026. 

The OECD projects New Zealand inflation moderating but notes risks from energy prices and the global trade environment. The IMF's assessment is similar, with inflation expected to return to target as spare capacity dampens pricing pressure. 

Inflation Expectations: The Critical Variable 

Inflation expectations are arguably the most important leading indicator for future inflation outcomes. If businesses and consumers expect higher inflation, they adjust pricing and wage demands accordingly — creating a self-fulfilling dynamic that makes the central bank's job significantly harder. 

The RBNZ's February 2026 Survey of Expectations revealed a concerning trend. One-year-ahead inflation expectations rose 20 basis points to 2.59% — the highest reading in over a year. Two-year-ahead expectations increased to 2.37%. Five-year-ahead expectations rose to 2.31%. 

All three horizons now sit above the 2% midpoint, and the one-year measure is approaching levels that would be uncomfortable for the RBNZ. If expectations continue drifting higher, the central bank may be forced to respond with tighter policy — even if the headline CPI is declining — to prevent expectations from becoming unanchored. 

Business pricing intentions provide additional colour. The ANZ Business Outlook survey shows firms continuing to plan price increases, though the pace has moderated from the peaks of 2022-2023. Wage expectations among businesses have also eased but remain above the 2% level consistent with the inflation target. 

For investors and policymakers, the expectations data suggests that while inflation is widely expected to decline, the risk of expectations drift represents a genuine threat to the benign forecast scenario. The April and July expectations surveys will be closely watched for confirmation of whether the February uptick was temporary or the beginning of a more concerning trend. 

Component-by-Component Analysis 

Electricity and Energy 

Electricity prices rose 12.2% annually in Q4 2025, the single largest contributor to headline CPI. This increase reflects higher wholesale electricity costs (driven by hydro generation variability), infrastructure investment pass-throughs, and the ongoing costs of the energy transition. Looking ahead, the trajectory depends on hydrological conditions, wholesale market dynamics, and regulatory decisions around pricing structures. Most forecasters expect some moderation from the 12% annual pace but do not anticipate outright declines. Energy is likely to remain an above-average contributor to CPI through 2026. 

Housing: Rents and Rates 

Rent inflation at 1.9% has been relatively contained compared to other housing costs, reflecting increased rental supply in some markets and a modest cooling of tenant demand. Looking forward, rents are expected to remain stable or rise modestly (2-3% annually), depending on the interaction between housing supply, immigration flows, and interest rates. 

Local authority rates (up 8.8%) are a stickier contributor. Councils face ongoing infrastructure, climate adaptation, and three-waters reform costs. While the pace of rate increases may moderate slightly, double-digit increases are not unusual and many councils have already signalled substantial rate rises for the 2026/27 financial year. 

Food Prices 

Food inflation at 4.5% (February 2026) is running well above headline CPI. Key sub-categories include fruit and vegetables (up 9.4%), dairy and eggs (up 9.9%), and meat (up 7.5%). The food price outlook depends on seasonal growing conditions, global commodity markets, transport costs, and competitive dynamics in New Zealand's concentrated grocery sector. 

Some moderation is expected through mid-2026 as seasonal effects normalise and global supply conditions improve. However, structural factors — including New Zealand's geographic isolation, reliance on road freight, and duopoly grocery market — suggest food inflation is unlikely to decline below 2-3% in the near term. 

Transport 

Transport costs are heavily influenced by global oil prices, which have been pushed higher by Middle East geopolitical tensions. Petrol prices have risen 45-50 cents per litre, and diesel is up approximately 72 cents per litre. If the conflict de-escalates, fuel prices could moderate, providing meaningful relief to CPI. If it escalates, this component could push inflation significantly above current forecasts. 

International airfares jumped 7.2% in Q4 2025, reflecting higher fuel surcharges and strong demand. This component is volatile and could moderate as travel demand normalises. 

Insurance 

Dwelling and contents insurance premiums surged 10% annually. New Zealand's natural disaster exposure, combined with global reinsurance market hardening and the legacy of Cyclone Gabrielle claims, is driving persistent premium increases. This is a structural inflationary force that is unlikely to reverse in the near term and is largely unresponsive to monetary policy. 

Tradables vs. Non-Tradables: The Two-Speed Story 

The RBNZ's inflation framework distinguishes between tradables inflation (internationally-influenced prices) and non-tradables inflation (domestically-generated prices). This distinction is crucial for understanding the inflation forecast. 

Tradables inflation has been the more volatile component, driven by exchange rate movements, global commodity prices, and import costs. The RBNZ expects tradables inflation to decline to around 1% as global supply conditions normalise and the NZD stabilises. 

Non-tradables inflation remains the stickier problem. Currently running around 5%, non-tradables inflation captures services prices, housing costs, insurance, rates, and other domestically-set prices. These are heavily influenced by labour costs, and with the labour market still carrying slack, the RBNZ expects non-tradables inflation to gradually decline toward 3%. 

The gap between tradables and non-tradables inflation is a global phenomenon — central banks worldwide have found that services inflation is the hardest component to bring back to target. For New Zealand, the timeline for non-tradables inflation to normalise will largely determine when headline CPI sustainably returns to 2%. 

Scenario Analysis: Where Could Inflation Surprise? 

Upside Risk Scenario (Inflation Higher Than Forecast) 

Several factors could push inflation above the consensus 2.0-2.3% forecast by year-end. A sustained escalation of the Middle East conflict could send oil prices significantly higher, feeding through to fuel, transport, and goods prices. If the NZD weakens materially (e.g., to 0.55 against the USD), import prices would rise, pushing up tradables inflation. A stronger-than-expected economic recovery could reduce spare capacity faster than anticipated, giving businesses more pricing power. And if inflation expectations continue drifting higher, the self-fulfilling dynamics could entrench above-target inflation. 

In this scenario, CPI could remain around 2.5-3.0% through year-end, forcing the RBNZ to hike rates sooner and more aggressively than currently priced. This would have negative implications for bonds, property, and rate-sensitive equities. 

Base Case Scenario (Inflation Returns to Target) 

The consensus base case sees inflation declining gradually through 2026, reaching 2.0-2.3% by Q4. This assumes oil prices stabilise, the NZD remains around 0.59-0.64, wage growth stays contained, and the economic recovery is gradual rather than vigorous. In this scenario, the RBNZ holds rates at 2.25% through most of 2026, possibly raising once to 2.50% by December. 

This is the most market-friendly scenario, supporting moderate equity returns, stable bond yields, and continued housing market recovery. 

Downside Risk Scenario (Inflation Falls Below Target) 

If the economic recovery stalls — due to a global recession, commodity price collapse, or sharper-than-expected domestic slowdown — inflation could undershoot the 2% target. A significant NZD appreciation, a collapse in oil prices, or a deflationary shock from China could push CPI below 1.5%. 

In this scenario, the RBNZ would likely resume cutting rates, potentially back toward 1.5-2.0%. This would be positive for bonds and rate-sensitive assets but would signal broader economic weakness. 

Implications for Monetary Policy 

The inflation forecast is the primary input into RBNZ rate decisions. The current base case — inflation returning to 2% — supports the RBNZ's current stance of holding rates at 2.25% and monitoring data. 

However, bank economists are divided on what comes next. ASB expects no rate changes in 2026. BNZ sees the first hike in early 2027. ANZ and Westpac both expect at least one hike before year-end. Market pricing suggests the OCR at 2.58% by December 2026. 

The key data points that will determine the RBNZ's next move are the April 21 CPI release (March quarter), the May Monetary Policy Statement (which includes updated projections), and the July expectations survey. If the March quarter CPI shows inflation declining back toward 2.5%, the RBNZ will likely stay on hold. If it remains at or above 3%, the probability of rate hikes increases significantly. 

Implications for Investors 

The inflation forecast has direct implications across asset classes. Bond investors should monitor the direction of inflation closely — sticky inflation erodes real returns and increases the probability of rate hikes. Inflation-linked bonds offer protection if inflation surprises to the upside. 

For equity investors, the inflation outlook affects discount rates (and therefore valuations), corporate input costs, and consumer demand. Companies with pricing power — those that can pass through cost increases without losing customers — are better positioned in an inflationary environment. Export-oriented companies benefit from a weaker NZD. 

Property investors face a rate-sensitive environment. The housing market recovery assumes continued monetary accommodation. If inflation forces rate hikes, mortgage costs will rise, potentially stalling price appreciation and reducing rental yields. 

For currency markets, the NZD is influenced by the relative rate outlook between New Zealand and its trading partners. If the RBNZ hikes while other central banks hold or cut, the NZD could strengthen — benefiting importers but reducing export competitiveness. 

Questions About NZ Inflation Forecasts 

Q: What is NZ inflation forecast for 2026? 

A: All major institutions forecast NZ inflation returning to 1.9-2.3% by December 2026, down from the current 3.1%. The RBNZ expects the 2% midpoint to be reached by March 2027. 

Q: Why did NZ inflation rise to 3.1%? 

A: Electricity costs surged 12.2%, council rates rose 8.8%, and transport costs increased significantly. These housing and energy-related cost pressures outweighed seasonal food price declines. 

Q: Will NZ inflation fall in 2026? 

A: The consensus expectation is yes, with inflation declining toward 2% by late 2026. However, risks from oil prices, sticky services inflation, and drifting expectations could delay the return to target. 

Q: What is core inflation in NZ? 

A: Core inflation averages 2.4% across the RBNZ's measures, within the 1-3% target but stubbornly above the 2% midpoint. Core measures have stalled after declining from above 5% in 2022-2023. 

Q: How do inflation expectations affect the forecast? 

A: Rising expectations (1-year ahead now at 2.59%) risk becoming self-fulfilling as businesses set prices and workers negotiate wages based on expected inflation. Drifting expectations could prevent inflation from reaching 2%. 

Q: What could push inflation higher than forecast? 

A: A Middle East conflict escalation (oil prices), NZD depreciation, stronger-than-expected economic recovery, continued expectations drift, and structural cost pressures (insurance, council rates) are the main upside risks. 

Q: What could push inflation lower than forecast? 

A: A global recession, commodity price collapse, NZD appreciation, sharper domestic slowdown, or deflationary shock from China could push inflation below target. 

Q: When is the next CPI data release? 

A: The next CPI release from Stats NZ is April 21, 2026, covering the March 2026 quarter. This is the most important data point for the inflation forecast. 

Q: How does NZ inflation compare to Australia? 

A: NZ headline CPI at 3.1% is actually lower than Australia's, where underlying inflation is projected to peak at 3.7% and headline at 4.2% in mid-2026. Australia's RBA has been raising rates to 3.85%. 

Q: Should I worry about hyperinflation in NZ? 

A: No. While 3.1% is above target, it is well within the range of normal economic fluctuation. New Zealand has strong institutional frameworks, an independent central bank, and credible monetary policy that prevent inflationary spirals. 

Conclusion 

New Zealand's inflation forecast for 2026 is a story of expected normalisation complicated by genuine risks. The consensus view — inflation returning to 2.0-2.3% by year-end — is well-supported by the trajectory of core inflation, contained wage growth, and spare economic capacity. If this base case plays out, the RBNZ can maintain its current stance and the economic recovery can proceed. 

However, the risks are non-trivial. Middle East geopolitical tensions, drifting inflation expectations, and structural cost pressures in energy, insurance, and local government rates could all push the inflation path higher than currently forecast. The April CPI release will be the first critical test of whether the disinflation trend is resuming or whether the December surprise was the beginning of a more persistent problem. 

For investors, businesses, and households, the practical message is clear: plan for the base case of moderating inflation, but be prepared for a world where prices stay elevated for longer. The data will tell the story — and the next few months of releases will be among the most consequential for New Zealand's economic direction since the pandemic.