The New Zealand dollar rose broadly in Asian trading on Tuesday, climbing to its highest level in seven weeks against the US dollar after New Zealand reported stronger-than-expected inflation data for the second quarter.

The figures highlighted mounting inflationary pressures facing policymakers at the Reserve Bank of New Zealand (RBNZ), reinforcing market expectations that the central bank will continue normalizing monetary policy.

The data also strengthened expectations that the RBNZ will raise interest rates at its September meeting, a move that would mark the country's second rate hike since the beginning of the year.

The Price

The New Zealand dollar rose 0.6% against the US dollar to 0.5873, its highest level since June 5, after opening the session at 0.5838. It touched an intraday low of 0.5832.

The currency ended Monday down less than 0.1% against the US dollar, marking its second loss in the past three sessions, as escalating military tensions between the United States and Iran boosted demand for safe-haven assets.

New Zealand inflation

Statistics New Zealand reported on Wednesday that the annual Consumer Price Index (CPI) rose 4.1% in the second quarter of 2026, the highest reading since the fourth quarter of 2023. The figure exceeded market expectations of a 4.0% increase and followed a 3.1% rise in the first quarter.

On a quarterly basis, CPI increased 1.5% in the second quarter of 2026, up from 0.9% in the previous quarter and above market expectations of a 1.4% increase.

The data showed that New Zealand's annual inflation rate remained above the RBNZ's medium-term target range of 1% to 3% for a third consecutive quarter.

The renewed inflationary pressures have strengthened the case for the Reserve Bank of New Zealand to continue tightening monetary policy and raise interest rates in the near term.

New Zealand interest rates

Following its July meeting, the Reserve Bank of New Zealand said further interest rate increases may be required, although the timing and magnitude of any future moves will depend on incoming economic data, inflation trends, and the strength of economic activity.

Following the inflation data, market pricing for a 25-basis-point rate hike at the September meeting increased from 85% to 95%.

Investors will closely monitor upcoming New Zealand economic data on inflation, employment, and economic growth to further refine expectations for the central bank's policy path.

Analysis and commentary

Satish Ranchhod, Chief Economist at Westpac, said the inflation data was not as alarming as the Reserve Bank of New Zealand may have feared, particularly given the continued easing in core inflation, "but headline inflation remains elevated."

Ranchhod added that Westpac expects the Reserve Bank of New Zealand to raise its official cash rate at both the September and December policy meetings.