National’s election-year supermarket crusade ignores 87% of the problem

An easy villain beats a hard problem

With the November 7 election weeks away, Finance Minister Nicola Willis has reached for two crowd-pleasers: tax cuts and a supermarket break-up. Neither touches the costs actually crushing household budgets. That is the argument Fran O’Sullivan made in the NZ Herald on 18 September, and it lands because it names the political temptation plainly. Supermarkets are visible and unpopular. Insurance, electricity, gas, mortgages, building costs and fuel are structural, slow to fix, and unphotogenic.

National announced on 16 September that if re-elected it would amend the Grocery Industry Competition Act within 100 days, giving the Commerce Commission six months to test structural separation of Foodstuffs into three nationwide chains. Willis said “New Zealanders are paying more than they should for groceries because supermarket competition is still too weak”. The party’s modelling promises grocery prices 3.5% lower after one year and 5% lower after six years, and household savings of $200 to $1,320 a year, totalling $12.6 billion over 20 years.

The maths of a small target

Start with what a supermarket actually costs you. The Commerce Commission’s first Annual Grocery Report, released in 2024, found average households spent $214 a week on groceries, or 13% of total weekly expenditure. That leaves 87% of household costs with nothing to do with supermarkets at all.

Even if National’s best-case six-year projection lands, a 5% cut on $214 a week saves a household roughly $555 a year, sitting near the bottom of National’s own range and arriving only after six years of disruption. Willis herself conceded the limits, warning that “structural separation of this scale has risks and must be done carefully” and that net benefits would depend entirely on implementation and what happens to supply-chain costs.

The costs a break-up creates

The experts see the same problem. Retail analyst Neville-Te Rito put it bluntly: “New Zealand’s problem was never the number of logos on the door, it’s the cost of running grocery infrastructure across a small, thin, isolated population.” New Zealand has one supermarket per 12,871 people, versus one per 3,009 in Germany. Fixed logistics costs are spread across fewer, more dispersed customers.

Chris Wilkinson, managing director of First Retail Group, warned that splitting the co-operatives means “establishing completely separate, duplicated administration and marketing functions” and that “the costs of building a duplicated supply chain from scratch will ultimately be passed right back to the consumer”. Westpac chief economist Kelly Eckhold noted New Zealand’s food price increases over 20 years have been middle-of-the-road for the OECD, calling higher prices “a global phenomenon” and the break-up unlikely to be a silver bullet.

A centre-right government against its own philosophy

Business groups called the plan “chilling” – not because they love the duopoly, but because forcibly dismembering a successful New Zealand co-operative sits awkwardly with National’s stated regulatory values. There is a perverse twist too. As the NZ Herald’s background piece notes, Foodstuffs’ owner-operator model keeps profits in local communities, while rival Woolworths is Australian-owned and sends its profits offshore. Weaken the co-operative and you may hand the offshore player the advantage.

Foodstuffs’ response was measured but pointed, noting that “every one of the more than 500 locally owned and operated supermarkets” would be affected, along with 3,000 supply chain and support staff, and questioning whether the costs and disruption would ultimately deliver meaningful savings at the checkout.

What business owners should watch instead

The real number is the one nobody is campaigning on. Annual CPI sat at 3.1% in the March 2026 quarter, unchanged from December, while household living-cost indexes rose 2% in the year to March. Insurance, energy, mortgages and building costs are all in that basket, and none are touched by a grocery restructure.

For business owners, the risk is not merely that the break-up underdelivers. It is that years of regulatory upheaval in the grocery supply chain dominate the policy conversation while the costs genuinely threatening operating margins and customers’ discretionary spending go unaddressed. The $12.6 billion sounds vast until you spread it across every household over two decades. Against what persistent insurance, energy and housing inflation is costing right now, it is loose change dressed up as a rescue.

Sources

• National’s tax-cut talk and supermarket break-up plan fail to tackle wider cost of living issues – Fran O’Sullivan (2026-09-18)
• National to pursue Pak’nSave, New World and Four Square break-up (2026-09-16)
• Splitting up Foodstuffs: Would it actually drive down grocery prices? (2026-09-16)
• National’s Foodstuffs split plan criticised over costs, scale and competition (2026-09-16)
• ‘Chilling’: Business groups speak out against National’s supermarket break-up plan (2026-09-17)
• ‘Important questions’ – Foodstuffs on National’s break-up plan (2026-09-17)
• Foodstuffs break-up: Where the idea began, the problems and the only precedent (2026-09-16)
• Annual inflation at 3.1 percent in March 2026 (2026-03-25)
• Economic snapshot: March 2026 quarter (2026-06-25)
• First Annual Grocery Report (2024-09-04)