Oil shock stirs fresh uncertainty for Kiwi mortgage borrowers
The Reserve Bank’s Monetary Policy Committee (MPC) heads into its next OCR review with a clear consensus to hold the official cash rate at 2.25% – but far less agreement on how quickly to move from there.
A fresh oil shock from the Iran conflict and disruption in the Strait of Hormuz is pushing up fuel and freight costs, testing how long the bank can stay patient as inflation pressures build in a fragile economy.
Governor signals patience, but remains vigilant
Recent comments from Governor Anna Breman and the bank’s latest communications help explain why markets see the committee leaning closer to the dovish side, even while remaining “vigilant” on inflation.
The governor has laid out a framework that focuses on the persistence of inflation rather than the immediate spike, stressing that monetary policy should not overreact to price moves it can do little about in the near term. The emphasis is on preventing a temporary oil‑driven surge from becoming embedded in expectations, wages and broader price‑setting.
Against that backdrop, local banks are divided over how fast RBNZ should steer the OCR back towards neutral.
Hawks warn real rates are too low
On one side are the hawks, who see the oil shock as a classic inflation surge landing on top of an already uncomfortable starting point. Westpac economists argue that fuel and freight disruptions are likely to push annual inflation into the 4–5% range and that the current OCR was set under a very different outlook.
Their concern goes beyond higher petrol and transport costs to how quickly pricing and wage‑setting behaviour might adjust. With surveys already showing elevated pricing intentions, visibly rising input costs and a war‑related narrative, firms may feel they have licence to push through larger price increases. On this view, the real OCR has slipped into deeply negative territory.
Westpac’s hawk scenario argues it is “no longer appropriate to retain stimulatory conditions” and that policy should be at least neutral, with a quick move in the OCR to above 3% to get ahead of any drift in inflation expectations.
Hawks also warn that if other central banks tighten and the RBNZ lags, a weaker New Zealand dollar could add another round of imported inflation.
Doves fear tightening into weakness
The doves see the same oil‑driven spike in prices, but draw very different conclusions, focusing instead on the domestic cycle.
Growth late last year was weaker than expected, with the recovery described as fragile and uneven even before the Middle East conflict. The labour market has softened, unemployment is up to 5.4%, underutilisation is higher, and consumer and business confidence has fallen sharply.
Kiwibank economists stress that this shock is hitting an economy that has already scraped its way out of the last downturn, with savings buffers run down, fiscal support fading, and wage growth cooling. They argue firms may struggle to fully pass on higher costs to households already squeezed by the cost of living.
Westpac’s dove scenario underlines that New Zealand already has spare capacity, suggesting further tightening now would risk pushing unemployment above 6% and potentially tipping the economy back into recession.
Bank previews reflect that balance. ASB expects the OCR to remain on hold for some time, with only a slow sequence of hikes beginning in late 2026 under its central view, while noting the risk of earlier and steeper moves if inflation and expectations surprise on the upside. BNZ also expects no change in April and little fresh guidance, but keeps a higher‑for‑longer track, pencilling in the first hike at the September Monetary Policy Statement and an eventual peak around 4%. Kiwibank similarly expects the RBNZ to hold at the upcoming review, characterising the stance as cool, calm and collected in the face of market pressure to move.
For more insights, read the full Westpac report.
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