Food Price Inflation Hits Record 18.2% As Supermarket Duopoly Tightens Grip

Food prices have surged 18.2% in the past year while supermarket giants Foodstuffs and Woolworths report record profit margins, leaving Kiwi families spending more on groceries than rent. The Commerce Commission’s market study recommendations remain largely ignored as the duopoly strengthens its pricing stranglehold.

At a glance

• Food inflation reaches 18.2% annually, the highest since records began in 1989
• Average weekly grocery bill now $347 for a family of four, up from $294 in 2025
• Foodstuffs and Woolworths report combined profit margins of 8.4%, double the OECD average
• Fresh produce prices lead increases with vegetables up 24% and fruit up 19%
• Government’s voluntary code of conduct shows minimal impact on pricing competition

The Numbers Don’t Lie

Stats NZ’s latest Consumer Price Index paints a grim picture for household budgets. Food price inflation of 18.2% means the average Kiwi family now spends $2,764 more annually on groceries than they did just two years ago. For context, that’s more than most families pay in rates.

• Meat prices increased 21.3% year-on-year
• Dairy and eggs rose 16.8%
• Fresh vegetables jumped 24.1%
• Bread and cereals climbed 15.2%
• Restaurant meals increased 22.4%

The velocity of these increases is unprecedented. We’re not talking about gradual inflationary pressures — this is a full-scale assault on family budgets that coincidentally aligns with record supermarket profitability.

Supermarket Profits Soar While Families Struggle

Here’s where the story gets interesting — and infuriating. While families ration meals and switch to homebrand products, Foodstuffs reported a 34% profit increase in their latest financial results, with Woolworths NZ not far behind at 28%.

• Combined gross profit margins hit 8.4% in 2025, up from 6.1% in 2023
• Foodstuffs’ EBITDA reached $687 million, a company record
• Woolworths NZ contributed AU$1.2 billion to parent company profits
• Market concentration remains at 85% between the two players

According to New Zealand Productivity Commission, the finding showed that excessive market concentration in grocery retail creates “significant barriers to competitive pricing” and enables “sustained above-normal profits at consumer expense.”

The duopoly isn’t even trying to hide it anymore. Internal documents leaked during recent Commerce Commission proceedings revealed pricing strategies explicitly designed to “maximise margin expansion opportunities during inflationary periods.”

Commerce Commission Recommendations Ignored

Remember the fanfare around the Commerce Commission’s market study? The 2022 report made 14 specific recommendations to increase competition and lower prices. Three years later, meaningful implementation remains virtually non-existent.

• Mandatory wholesale access requirements: Still “under consultation”
• Unit pricing standardisation: Voluntary compliance at 23%
• Land covenant restrictions: No legislative action taken
• Planning law reforms: Blocked by local government lobbying
• Supplier relationship regulations: Watered down to voluntary guidelines

The voluntary Code of Conduct introduced in September 2025 has proven as effective as a chocolate teapot. Compliance monitoring shows suppliers still face retrospective rebate demands, delisting threats, and category management fees that ultimately flow through to consumer prices.

Regional Price Gouging Exposed

The data reveals systematic regional price discrimination that would make overseas visitors blush. Auckland families pay 7.2% more for identical grocery baskets compared to Wellington, while provincial centres face premiums of up to 15%.

• Identical 2L milk: Auckland $4.89, Invercargill $5.67
• White bread loaf: Wellington $3.45, Gisborne $4.12
• Bananas per kg: Christchurch $4.23, Whanganui $5.89
• Chicken breast per kg: Hamilton $16.90, Timaru $19.45

These aren’t transport cost differences — they’re calculated margin maximisation based on local market tolerance and competition absence.

Government Response Falls Short

Commerce Minister Andrew Bayley’s response has been predictably tepid. His recent statement about “monitoring the situation closely” and “encouraging voluntary compliance” reads like a form letter from the last decade.

The proposed Grocery Industry Competition Bill — promised for introduction in late 2025 — remains in drafting limbo. Industry insiders suggest heavy lobbying from Foodstuffs and Woolworths has watered down enforcement mechanisms to mere window dressing.

• Mandatory wholesale pricing: Reduced to “commercial negotiation guidelines”
• Independent monitoring body: Budget allocation still “under review”
• Penalty frameworks: Maximum fines capped at levels that represent rounding errors for duopoly profits

The Overseas Comparison

New Zealand’s grocery market concentration makes other developed countries look like competition paradises. Australia — hardly a bastion of retail competition — maintains four major chains with significantly lower margins.

• UK grocery market: 4 major players, average margin 3.2%
• Australian market: 4 major players, average margin 4.1%
• Canadian market: 3 major players, average margin 3.8%
• New Zealand market: 2 major players, average margin 8.4%

The pattern is clear: fewer players equals higher prices and fatter margins. Economics 101 in action, with Kiwi families footing the bill.

Impact

For New Zealand businesses, these food price increases create cascading effects throughout the economy. Hospitality operators face impossible margin compression as ingredient costs spiral while consumer spending power diminishes. Food service businesses report average cost increases of 19.3%, forcing menu price rises that further dampen customer demand.

Employers face mounting wage pressure as staff struggle with grocery bills exceeding $1,800 monthly for average families. The Reserve Bank’s inflation targeting becomes increasingly complex when duopoly pricing power operates independently of monetary policy settings.

Small retailers and food manufacturers continue facing delisting threats and retrospective fee demands from the major chains, creating barriers to market entry that perpetuate the pricing cycle. Without legislative intervention with actual teeth, expect food price inflation to remain structurally elevated regardless of broader economic conditions.