With consultation now closed, the Reserve Bank of New Zealand’s (RBNZ) capital review has become a test of regulatory philosophy: should prudential policy remain a fortress against crisis, or evolve into a framework that balances resilience with efficiency and competition?
The review also unfolds against a backdrop of public frustration over the cost of living and rising mortgage stress. The Reserve Bank’s role in both the inflation surge and subsequent tightening cycle has made it a lightning rod for criticism, and that has sharpened scrutiny over how its decisions affect ordinary New Zealanders.
The consultation, which closed on 3 October, began in August by asking whether the 2019 capital framework should be eased. That framework had placed New Zealand among the world’s most conservative jurisdictions, demanding banks hold capital levels far above international peers.
Defenders saw this as a shield against crisis. Adrian Orr, the former Governor who oversaw the 2019 capital review, repeatedly framed the higher buffers as necessary to withstand a “1-in-200-year” financial shock.
Critics, including the Commerce Commission and Finance Minister Nicola Willis, saw them as barriers to competition and drivers of higher costs.
The public stakes
The RBNZ proposals canvassed two broad options: one that would lower system-wide capital by 12 per cent, and another that would reduce common equity Tier 1 by about 10 per cent. Other changes included scrapping Additional Tier 1 instruments, reducing the minimum capital requirement for new deposit takers from NZ$30 million to NZ$5 million, and applying more granular risk weights to lending categories.
Those outside the realm of bank regulation might fairly wonder what it all means to New Zealanders. In sum, the package amounts to a recalibration. It would pull New Zealand back from being an international outlier on capital conservatism and lower barriers for new entrants, all while shifting the focus of prudential oversight toward closer monitoring of risks rather than reliance on large buffers alone. For the public, the effect could be felt in cheaper credit and more competition; for regulators, it means a heavier lift in supervision and analysis.
Supporters say these measures could ease the burden on borrowers and level the playing field for challengers. Finance Minister Nicola Willis recently highlighted those stakes: “Since 2019 concerns have been raised that the Reserve Bank’s capital settings may be undermining competition and efficiency in our banking industry, increasing the cost of lending to New Zealanders, imposing excessive restriction on lending to important sectors such as agriculture and community housing, and creating headwinds for economic growth.”
She added that aligning requirements with actual risk “could result in better lending terms for some residential mortgages, small to medium-sized businesses, agricultural lending and lending to community housing providers and housing co-operatives. These measures would also help even the playing field between larger banks and their smaller competitors”.
A test for regulators
The review marks a technical recalibration for regulators, but it is also a signal of philosophical change: from fortress to frontier.
The 2019 framework reflected a post-crisis conservatism: capital as the ultimate defence. The 2025 proposals instead reflect an expanded remit. Under the Deposit Takers Act, the Reserve Bank must now balance stability with efficiency and competition. That dual responsibility raises the stakes for supervisory practice.
In essence, the shift is from a fortress model that prioritised resilience at almost any cost, to a more balanced approach that treats prudential regulation as a lever for stability, yes, but also for efficiency and fair competition, opening the doors to new entrants and innovators. It’s less about building ever higher walls and more about calibrating the system to manage risk while supporting broader economic goals.
RBNZ Board Chair Neil Quigley put it plainly: “Under the Deposit Takers Act, we will have stronger tools for supervision and crisis management, as well as additional capacity and capability as a regulator. That means we can responsibly ease capital requirements, while still protecting financial stability”.
This means supervisors may have to rely less on blunt requirements and more on active oversight. Lower entry thresholds create room for new institutions, but the removal of AT1 capital forces banks to restructure their funding, with regulators needing to test alternative instruments and assess new risk profiles.
The leadership upheaval has complicated the RBNZ’s communications at a time when public trust in institutions is fragile.
Balancing resilience with competition
The consultation comes after years of criticism that the 2019 regime overreached. Analysis showed New Zealand banks would have ended up holding capital buffers of around 25 per cent, compared with materially lower levels abroad. Industry groups argued that this made credit scarcer, restricted lending to productive sectors, and gave large incumbents a competitive edge.
RBNZ Governor Christian Hawkesby acknowledged the tension: “Capital settings are one of the most important tools we have to protect and promote the stability of the financial system. However, it’s essential we strike the right balance – protecting depositors and the wider economy, while supporting competition and economic efficiency.”
Assistant Governor Angus McGregor, however, sought to dampen expectations: “We don’t expect this to set the world on fire. This is not the thing that’s driving economic growth”.
Politics, pressure, and precedent
The review was first signalled in March, when the Reserve Bank set out its Terms of Reference on the final day of former Governor Adrian Orr’s tenure – a departure later revealed to stem partly from funding and independence disputes with Finance Minister Nicola Willis.
By the time the detailed consultation paper followed in August, public confidence in the Bank had been strained by leadership turnover and criticism of its role in driving mortgage and cost-of-living pressures. Even so, the review aligns with recommendations from the Commerce Commission’s market study into personal banking and Parliament’s Finance and Expenditure Committee, both of which pointed to competition concerns.
Internationally, the shift is part of a trend. Australia is phasing out AT1 instruments but retaining overall capital levels. In the United States, the Federal Reserve has pulled back on proposals to increase buffers. The European Union, too, is edging toward recalibration rather than reinforcement.
Against this backdrop, New Zealand’s proposals stand out as more sweeping, with the 12 per cent system-wide cut marking one of the boldest shifts among advanced economies. For a deeper yet accessible look at the numbers, see Capital Issues’ post on the matter.
Implementation risks
If adopted, the new framework would not arrive overnight. The RBNZ expects to phase in changes under existing legislation through 2025 and 2026, with new Deposit Takers Act standards issued in 2027 and the full framework live by 2028.
The staggered timeline reflects both the scale of change and the coordination required with international peers.
Transition costs will be significant. Banks will need to redesign capital stacks, replace AT1 instruments, and update risk-weighting models. Regulators will need to enhance data and analytical capabilities to monitor more granular exposures.
Political risk also lingers. If global markets weaken, easing capital requirements could be portrayed as imprudent.
Independent eyes on the review
To reinforce credibility, RBNZ has appointed three international experts – Thorsten Beck, Elena Carletti, and Sir John Vickers – to provide independent assessments of its methodology. Their role is set out in the executive summary and Q&A documents accompanying the consultation and their findings will be published alongside the Bank’s final decisions in December.
This process mirrors best practice in prudential oversight, ensuring transparency and challenging internal analysis.
The leadership upheaval has complicated the RBNZ’s communications at a time when public trust in institutions is fragile. Acting Governor Christian Hawkesby has described the Bank as facing “a test of trust and confidence”, and his successor, incoming Governor Anna Breman, is expected to inherit both the capital review’s implementation and the challenge of rebuilding credibility.
Beyond the numbers
For the public, the review’s closure means the debate has moved from submissions to decisions. For banks, it means preparing for a reshaped capital regime that may lower barriers but demand new forms of discipline. And for regulators, it means taking on a wider remit: no longer just guardians of resilience, but arbiters of competition and efficiency.
The December announcement will show how far the Reserve Bank is prepared to go in shifting from fortress prudence to pragmatic balance.
Whatever the outcome, it will set the tone for prudential policy not just for banks, but for the broader regulatory environment in New Zealand for years ahead.
