Locking away KiwiSaver won’t cool house prices, just the buyers

A proposal to stop first-home buyers drawing on future KiwiSaver savings for a deposit has already been branded a “stupid policy” by one economist. Detail on the mechanism and timing is still thin, but the principle is clear enough to judge. It treats KiwiSaver like a demand subsidy that can be switched off to discipline the market. It isn’t one, and switching it off would hit the people the housing system already struggles to serve.

The deposit pathway is now worth $2.3 billion a year

This is not a niche tool. IRD figures show first-home withdrawals reached $2.3 billion in the year to June 2026, up from $495.0 million in 2016, with 50,470 members withdrawing, nearly double the 26,570 of a decade earlier.

The per-buyer numbers explain why. In June 2026, 4,370 people withdrew for a first home at an average of just under $46,000. Simplicity chief economist Shamubeel Eaqub, who describes the current mix of soft prices, growing deposits and lower mortgage rates as a “sweet spot” for first-home buyers, points out that a couple pooling two average withdrawals clears $90,000, “a decent deposit in many parts of New Zealand”.

For a young couple without wealthy parents, that is often the difference between buying and renting indefinitely. It became a genuine deposit tool only after the 2015 law change let funds be paid to a stakeholder before an agreement went unconditional. Undo that and the money arrives too late to secure the house.

Economists keep landing in the same place

The price-inflation case is weaker than it sounds. In November 2025, Cotality chief property economist Kelvin Davidson said KiwiSaver access “likely meant house prices were higher than otherwise”, but conceded buyers would probably have found a deposit some other way. Kernel Wealth founder Dean Anderson argued the effect was negligible, given first-home buyers’ share of purchases held steady while prices went flat. Infometrics economist Nick Brunsdon made the sharper point that KiwiSaver is an investment vehicle with a small tax-credit component, not a grant.

We have had this argument before. When the OECD floated phasing out first-home withdrawals in 2022, economist Rosie Collins argued it would not slow house price growth but would dash younger people’s hopes of owning. Four years on, the verdict hasn’t changed because the economics haven’t.

Treasury’s own logic cuts both ways

Back in 2016-17, Treasury opposed widening the old HomeStart grant, warning higher caps “would stimulate demand for lower-priced housing when supply is constrained” and push prices up. Fair enough. But the mirror image does not automatically hold. Once supply has adjusted around existing demand, yanking a lever does not unwind prices. It rations access. The buyers who lose out are those relying on their own savings, while those with family equity or high incomes carry on.

That is the perverse outcome here. A policy sold as prudence ends up favouring inherited wealth over earned savings. Centre-right policy should reward people who put money away, not penalise them for using it.

The scheme is already doing double duty

There is a quieter warning in the same dataset. Hardship withdrawals hit $538.2 million across 52,330 members in the year to June 2026, roughly five times the 2016 member count. Eaqub has flagged that these show no sign of easing, with people citing job losses, mental health issues and medical emergencies.

KiwiSaver is now functioning as both a deposit-builder and an emergency fund for a growing share of households. Tightening one door while the other is under strain sends a confusing message about what the scheme is for, and risks eroding the trust that keeps people contributing at all.

Fix supply, leave the savings alone

For banks, mortgage advisers, developers and KiwiSaver providers, the stakes are concrete. Roughly $2.3 billion a year of transaction-enabling capital, much of it funding entry-level homes and new builds, would be pulled out of the market at the very moment affordability has improved. Developers selling to first-home buyers would feel it first.

If the goal is cheaper housing, the levers are well known: consenting, land supply, infrastructure funding and construction costs. Restricting access to people’s own savings does none of that. It is another demand-side distortion dressed up as discipline, and whoever is promoting it should be made to show which house gets cheaper as a result. The honest answer is none of them.

Sources

• Stuff: ‘Stupid policy’: Plan to block first-home buyers using KiwiSaver attacked (2026-10-17)
• IRD: Datasets for KiwiSaver statistics (2026-09-30)
• RNZ: KiwiSaver withdrawals: ‘A tale of two New Zealands’ (2026-07-29)
• IRD Tax Technical: KiwiSaver withdrawals for first home buyers (2015-06-01)
• RNZ: Have KiwiSaver billions boosted house prices? (2025-11-05)
• BusinessDesk: Axing first-home buyer help from KiwiSaver won’t slow prices: economist (2022-02-02)
• Treasury: OIA Response 20200334 – Impact of KiwiSaver First Home scheme on house prices (2022-01-18)