The government has found another $8.5 million in savings from Warmer Kiwi Homes in Budget 2026, bringing total cuts to the programme to roughly $140 million since 2024. The Treasury’s own summary of initiatives confirms the savings include operational funding for the programme and the discontinuation of Crown funding for energy innovation body Ara Ake. Meanwhile, energy hardship is getting worse. Sumaria Beaton-Sikisini, general manager of Southland energy efficiency firm Awarua Synergy, told Newsroom that hardship is “showing up in cold homes, constrained budgets, and tough choices between heating and other essentials”.
This is a programme that the government’s own officials recommended preserving. And the numbers explain why.
A 4-to-1 return the Treasury told them to keep
In November 2023, MBIE prepared a fiscal sustainability briefing for the incoming government that explicitly recommended protecting the core insulation and heating programme. It cited a benefit-cost ratio of over 4:1 and an average 16 percent reduction in winter electricity use for retrofitted homes. The briefing identified savings from newer add-on components like LED installations and hot water heat pumps, not from the core programme.
The government cut into the core programme anyway.
An independent evaluation published in 2020 put the benefit-cost ratio at 4.7:1. Health benefits represented approximately 97 percent of total programme benefits, with reduced mortality accounting for 81 percent. The average combined retrofit cost was roughly $5,100 per home. As of 2023, about 100,000 eligible owner-occupied households still had not been reached.
On those numbers, cutting $8.5 million in Budget 2026 means forgoing roughly $37 million in economic and wellbeing value. The $140 million stripped since 2024 implies more than half a billion dollars in benefits that will never materialise.
The health bill doesn’t vanish, it moves
In July 2024, the Public Health Communication Centre published analysis finding that the health and social benefits of insulation are nearly six times greater than the cost. The same research found one death prevented per year for every 1,000 homes insulated, and was blunt about the productivity consequences: “Less insulation means more health sector costs and lower productivity.”
In 2024, the New Zealand College of Public Health Medicine weighed in. Then-president Sir Collin Tukuitonga said cutting back on Warmer Kiwi Homes was “shortsighted and makes no sense”, noting several hundred thousand families still lived in cold, damp homes at greater risk of asthma and hospitalisation.
None of this is contested. The government is not arguing the programme doesn’t work. It is simply choosing to book the savings now and let the costs appear somewhere else, spread across hospital budgets, ACC claims, GP visits, and sick days that employers absorb.
Why business owners should care
For anyone running a company, this is not an abstract housing policy debate. The costs that flow from cold, poorly insulated homes land directly on the productive economy.
Workers in substandard housing take more sick days. Respiratory illness drives GP visits and pharmaceutical costs funded through taxes businesses pay. Hospitalisations from preventable cold-related conditions flow through to Health NZ and ACC. And households spending more on energy to compensate for poor insulation have less disposable income to spend in the broader economy.
In 2024, RNZ reported that Budget 2024 had already cut $127.5 million from EECA over four years, reversing funding for outreach to hard-to-reach households. Then-Labour leader Chris Hipkins warned that “the easy homes to insulate have largely been reached” and that low-income families would miss out. Budget 2026 has now compounded those cuts.
Fiscal discipline requires knowing what things cost
There is nothing wrong with looking for savings. Every government should. But fiscal discipline means understanding the full cost of a decision, not just the line item you are cutting. When the government’s own advisers tell you a programme returns four dollars for every one spent, and that 97 percent of the benefit comes from keeping people alive and out of hospital, cutting it is not thrift. It is innumeracy.
The $140 million “saved” from Warmer Kiwi Homes will reappear as higher health spending, lower workforce productivity, and deeper energy hardship for the households least able to absorb it. The only question is whether anyone in the Beehive will be honest enough to connect those costs when they arrive.
Sources
- Newsroom: Govt finds more Warmer Kiwi Homes savings as energy hardship spikes (2026-06-08)
- Treasury: Budget 2026 Summary of Initiatives (2026-05-28)
- Public Health Communication Centre: New Zealand’s hard-won improvements to our Building Code must be retained (2024-07-29)
- Scoop: College of Public Health Medicine deeply concerned at cuts to Warmer Kiwi Homes scheme (2024-06)
- RNZ: Labour attacks Budget 2024 over cuts for housing (2024)