The arithmetic of a forced trade-off
The March 2026 ANZ card spending data tells a story that should worry every business owner outside a petrol station. Card spending at fuel retailers surged almost 30%, or 20.6% seasonally adjusted. Meanwhile, total card spending rose just 1.2% seasonally adjusted. Strip out the fuel and the rest of the economy went backwards.
The critical detail, confirmed by ANZ chief economist Sharon Zollner using MBIE fuel price data: almost all of the increase was driven by higher prices, not higher volumes. Nobody suddenly started driving more. They were forced to pay more for the same kilometres. And the money had to come from somewhere.
Hospitality and groceries took the hit
The sectoral breakdown is brutal. Spending at fast food outlets, cafes, restaurants and bars all declined. Supermarket spending fell. Secondhand shop spending dropped, which is a reliable distress signal from lower-income households who shop there by necessity, not choice.
This reverses February’s picture completely. Just weeks earlier, hospitality spending was up 2.4%, or $35 million month-on-month, and Westpac’s Satish Ranchhod was describing the trend as “starting to look more positive in the early part of the year”. One month of fuel shock made that optimism obsolete.
Zollner puts it plainly: “Some people have a buffer that they can use to smooth things out but quite a lot of people don’t and so if they’re having to drive and they have to fill up the car then it leaves less money over for other things.”
$150 a week before you buy food
The household maths are punishing. Simplicity chief economist Shamubeel Eaqub calculated that at $3.42/litre for 91 unleaded, an average household buying 43 litres a week is paying nearly $150/week on fuel, up $40 from the previous week alone. At projected prices of $3.80/litre, that figure rises to $165/week before a single grocery item hits the trolley.
ASB economists Yen Nguyen and Kim Mundy estimate petrol above $3.40/litre is already adding about $16.50/week to the average household fuel bill compared with pre-conflict levels. Under their central scenario, total household expenditure rises by about $55/week through 2026, around 50% more than business-as-usual.
Eaqub frames the cumulative pressure: “Since 2019, the cost of necessities has gone up by about $300 a week”, including food, electricity and insurance. This fuel shock is not landing on comfortable budgets.
A country that can’t stop driving
New Zealand’s structural exposure makes this worse than it needs to be. An Ipsos mobility report covering 31 countries found 66% of New Zealanders use a car as their primary transport, compared to a world average of 39%. 51% say it would be impossible to live without one, versus 43% globally.
The regional picture is worse still. Ministry of Transport data shows Northland, Waikato, Southland and the West Coast all clock above 10,423 kilometres per person per year, compared to 6,489-8,611 in Auckland and Wellington. Provincial New Zealand has no realistic alternatives. Eaqub: “I was talking to somebody in Taranaki, they drive almost an hour to get to work every day. There’s no other way to get there.”
Businesses face the squeeze from both ends
For business owners, the problem is dual. RSM New Zealand identifies that the impact shows up “not only at the fuel pump, but also through higher freight charges, supplier price increases, travel costs, and the general expense of keeping operations running”. Fuel is both a direct cost and one embedded in every supply chain link.
The timing is the killer. Input costs are rising at the exact moment customers are pulling back. Retail NZ ran a dedicated webinar on “Global conflict and fuel costs” featuring Waitomo’s Simon Parham, a signal the industry body views this as serious enough for direct member education.
Kiwibank chief economist Jarrod Kerr is blunt about where this leads: “If it gets worse, will definitely increase the risk of a recession here. And we have only just gotten out of recession, so to fall back in would be horrendous for households and businesses.” With unemployment already at 5.4%, the normal buffers are gone.
The next quarter is already written
ASB forecasts headline inflation peaking at around 4.2% in the June quarter, with retail weakness persisting through most of 2026 and a meaningful consumer recovery pushed into 2027. That is not a forecast. For any business reliant on discretionary spending, it is a trading warning. The money your customers used to spend with you is already sitting in a fuel tank.
Sources
- RNZ: New Zealanders’ 30% fuel bill increase laid bare (2026-04-14)
- B2B News: Rising fuel prices squeeze Kiwi budgets, data reveals (2026-04-14)
- NZ Herald: Retail spending rose in February in last data before Iran conflict (2026-03-28)
- MPA: Fuel shock slams Kiwi budgets, tightens mortgage borrowing power (2026-04-10)
- RNZ: Fuel cost jumps $40 in a week: Who’s feeling it most? (2026-04-05)
- TVNZ: Who’s feeling it most? Fuel cost jumps $40 in a week (2026-04-05)
- RNZ: Iran war hits Kiwi wallets hard, as economist warns of another recession (2026-03-31)
- RSM: Rising fuel costs and tighter margins – Practical steps for NZ business leaders (2026-04-08)
- Westpac NZ Retail Spending Pulse, February 2026 (2026-03-20)