Seven days, five banks, one message
Westpac started it on 17 March, lifting special fixed rates by 10-30 basis points across one-to-five year terms. BNZ followed the next day with a 40 basis point increase on its five-year rate, the largest single jump of the round. ANZ moved the same day, raising most terms by 20 basis points. ASB and Kiwibank completed the sweep by 24 March.
Industry-wide repricing in under a week is not subtle. It is banks telling the market that funding conditions have shifted and are not coming back.
The OCR is a sideshow for fixed rates
The Official Cash Rate sits at 2.25%. That number sets the floor for floating rates and short-term lending. For two-to-five year fixed mortgages, the number that matters is the wholesale swap rate, and as of 5 March the five-year swap was 3.82%, a spread of 157 basis points above the OCR. The two-year swap was 3.11%. These are the rates at which banks actually fund fixed-term lending, and they are set by global capital markets, not the Reserve Bank.
The banks were explicit about the cause. Westpac’s general manager of product, Sarah Hearn, said “longer-term wholesale rates have increased significantly in recent weeks, driving up funding costs for lenders”. ASB’s executive general manager of personal banking, Adam Boyd, pointed to “heightened global economic uncertainty and renewed pressures across global markets”. ANZ chief executive Grant Knuckey confirmed that wholesale rates had continued rising across all terms since the bank’s February changes.
Hearn’s phrasing is worth noting. Westpac said it was “absorbing some” of the increased costs. That is a polite way of saying the full wholesale increase has not yet been passed through. If swap rates keep climbing, another round of retail increases is likely.
This was flagged months ago
Infometrics chief executive Brad Olsen called this dynamic in December 2025, when retail rates were already rising despite OCR cuts. He noted wholesale rates had moved 40 basis points higher than the day before the RBNZ’s November announcement, and was blunt about the disconnect: “there had never been a direct correlation” between the OCR and retail mortgage rates.
The market repriced the end of the easing cycle before the Reserve Bank formally acknowledged it. Anyone who made a financial decision premised on cheap money persisting was working from the wrong signal.
The repricing wave hits household budgets
RBNZ data shows roughly $162 billion in fixed-rate residential mortgages due to roll over within 12 months: $42.7 billion within one to three months, $49.4 billion within three to six months, and $70.0 billion within six to twelve months. Many of those borrowers locked in during the 2024-25 easing cycle. Knuckey noted that 78% of ANZ’s fixed home loans are now below 5%, compared to fewer than 10% at the end of 2024.
Those sub-5% rates are disappearing from rate cards. Two-year specials now sit between 4.89% and 5.19% depending on the bank. Five-year rates range from 5.59% to 5.99%. A large cohort of borrowers will roll onto higher repayments over the next year.
First home buyers are the most exposed. RBNZ lending data shows first home buyers account for $567 million of the $752 million monthly high-LVR lending total, meaning they carry the least equity cushion and the tightest budgets.
What this means for consumer-facing businesses
The mechanism is simple. Higher mortgage repayments reduce household disposable income. Reduced disposable income hits retail, hospitality, home improvement, and services. The $162 billion repricing wave does not land all at once, but it flows through steadily over 12 months, and it runs directly counter to the rate-cut optimism that supported consumer confidence through 2024-25.
There is a partial offset. Banks lifted term deposit rates alongside mortgage rates. ASB raised deposit rates by up to 50 basis points across 12-month to five-year terms. Businesses holding cash benefit modestly. But that benefit accrues to savers, not spenders, and the net effect on consumer demand is negative.
Any business that built its 2026 revenue plan on the assumption of continued rate cuts should revisit those numbers now. The OCR may yet fall further, but the rates that actually determine what households pay each fortnight are moving in the other direction, driven by forces no central bank in Wellington controls.
Sources
- 1News: Big bank hikes multiple home loan rates, citing increased costs (17 March 2026)
- NZ Herald: BNZ joins Westpac in lifting mortgage interest rates, 5-year term biggest jump (18 March 2026)
- 1News/TVNZ: NZ’s biggest bank raises most mortgage rates (18 March 2026)
- 1News: Another major bank announces changes to mortgage rates (24 March 2026)
- RNZ: More banks hike interest rates as fuel threatens to push up inflation (March 2026)