30 September 2026 ACT leader David Seymour has questioned the economic direction New Zealand could take under a Labour-Green government, targeting Green Party co-leader Chlöe...
30 September 2026
ACT leader David Seymour has questioned the economic direction New Zealand could take under a Labour-Green government, targeting Green Party co-leader Chlöe Swarbrick’s interest in becoming Finance Minister.
In a social media post, Seymour argued that the Greens’ proposed spending, taxation and supermarket reforms could undermine investor confidence and increase the Government’s borrowing costs.
His comments come as political parties sharpen their economic messages ahead of the 7 November general election.
Seymour asked New Zealanders to imagine Swarbrick travelling to New York as Finance Minister and attempting to convince international investors that New Zealand remained a reliable place to lend money.
He claimed the Greens’ economic programme would make that task difficult.
Seymour pointed to the party’s proposed wealth tax, supermarket reforms and spending commitments, arguing that these policies would result in higher government debt and taxation.
He also cited a figure of $236.7 billion in proposed Green Party spending over the next parliamentary term.
The ACT leader contrasted this approach with his party’s commitment to reducing government expenditure, identifying savings and avoiding new taxes.
His comments represent ACT’s assessment of the potential economic consequences of Green Party policies, rather than an established forecast of how financial markets would respond.
The Greens have outlined significant changes to New Zealand’s taxation system and supermarket sector.
Their tax proposals include an annual 2.5 percent tax on net assets above $10 million, excluding the family home.
The party has also proposed changes to the taxation of large inheritances and gifts, higher company taxes for major corporations, and a tax-free income threshold of $10,000.
The Greens argue that these changes would reduce income tax for most New Zealanders while raising additional revenue for public services.
In the grocery sector, the party has proposed establishing a publicly owned supermarket chain called KiwiMart.
The proposal includes requiring Foodstuffs and Woolworths to divest at least 120 stores and associated distribution capacity into public ownership.
The Greens say the changes would increase competition and help address high grocery prices.
Seymour has characterised the proposal as nationalisation and compared it to policies pursued in Venezuela.
The Greens, however, present KiwiMart as a way to introduce a publicly owned competitor into a market dominated by two major supermarket groups.
The spending figure cited by Seymour appears in the New Zealand Taxpayers’ Union’s 2026 election spending tracker.
The organisation estimates the cost of the Greens’ announced spending commitments at $236.7 billion over the next parliamentary term.
That figure is the organisation’s calculation of policy costs. It is not an official Treasury forecast, an agreed government budget or a confirmed increase in borrowing.
The Greens have separately published estimates of the revenue their proposed tax changes would generate.
According to the party’s revised figures, the tax package would raise approximately $5.15 billion in net additional revenue in 2027/28, increasing to $5.73 billion by 2030/31.
A complete assessment of the party’s fiscal position would need to consider both its proposed expenditure and expected revenue, alongside implementation costs and any future coalition agreements.
Seymour’s central argument is that international financial markets would react negatively to the Greens’ economic programme.
Government borrowing costs are influenced by several factors, including fiscal forecasts, inflation, interest rates, economic growth and investor confidence.
However, whether borrowing costs would increase under a government involving the Greens would depend on the policies ultimately adopted and the wider economic environment.
Swarbrick has expressed interest in the Finance portfolio, but no future Finance Minister has been appointed.
Any allocation of ministerial responsibilities would depend on the election outcome and subsequent government formation arrangements.
The exchange highlights differences between ACT and the Greens over taxation, government spending and the role of the state.
ACT is campaigning on controlling expenditure, finding savings and avoiding new taxes.
The Greens favour changes to taxation and greater public investment, arguing that additional contributions from wealthy households and large corporations could help fund services and reduce inequality.
Both parties have identified economic pressures facing New Zealanders, but they propose different responses.
Seymour argues that the Greens’ programme would create additional financial risks.
The Greens maintain that their approach would make the tax system fairer and provide more funding for public services.
The disagreement is likely to remain part of the election campaign as parties defend their economic plans.
The Finance Minister in the next government will be determined after the election and any necessary government formation negotiations.
Swarbrick’s interest in the portfolio does not guarantee she would receive it, even if the Greens participated in a future government.
For New Zealanders, the debate raises questions about how election promises would be funded, what different tax policies would mean for households and businesses, and how future governments would manage public finances.
Those questions will remain relevant as parties continue to release and explain their economic policies ahead of polling day.
Sources: David Seymour’s public Facebook statement, Green Party policy announcements and the New Zealand Taxpayers’ Union’s 2026 election spending tracker.
