The 45% number nobody wants to say out loud
Waitaki District Council is staring down a proposed 19% rates increase, roughly $700 a year for the average household. Mayor Mel Tavendale called it “just the bargain basement figure and as low as the council could go.” Councillor Sven Thelning was more direct: “Strictly based on financials they should be going for a 45 percent increase. The 19 percent is the bottom, absolute least we could do.”
That 19% was set before the worst of the fuel-driven cost blowouts arrived. Infrastructure manager Joshua Rendell has since told councillors the fuel crisis is pushing contracting costs up by as much as 30% in some instances, with pipe manufacturing hit hardest. The gap between what Waitaki budgeted and what it will actually cost to maintain basic services is widening by the week.
Contractors are absorbing losses they cannot sustain
The mechanism is straightforward and brutal. After the COVID-era supply chain chaos, most councils rewrote their contracts to exclude cost escalation clauses. Wynn Williams Lawyers analysed the legal position and found that for lump sum or fixed-price contracts, contractors have “little legal basis to claim additional costs from fuel price increases.” They bear the risk.
At the time, stripping out escalation clauses looked like prudent ratepayer protection. In practice, it transferred all fuel price risk onto contractors, many of them small regional firms with thin margins and no buffer.
The distress is already showing. Rendell described at least one Waitaki contractor who said “the CPI and cost fluctuation movements are too far delayed and they are having difficulties with cash flow”, requesting an early fuel adjustment factor. That is a polite way of saying the contract is sending them broke.
ANZ’s analysis paints the broader picture. The bank estimated a spending lift of about 30% at petrol stations from February to March 2026, driven mostly by price rather than volume. ANZ Managing Director Business and Agri Lorraine Mapu warned the bigger risk is “not a single price spike, but persistently high prices and fragile supply chains that amplify cost volatility, particularly for smaller firms with less buffer.”
Councils cannot cut their way out
Here is where the contract trap closes. Rendell warned that reducing work scope to save money would leave the council exposed to contractor claims for lost profit and overheads. The contract works both ways. Councils are locked into paying more, or paying for not paying.
This is not a Waitaki problem. Gisborne District Council chief executive Nedine Thatcher Swann reported cost increases of about 25% in roading and solid-waste transport. On the West Coast, chief executive Darryl Lew told RNZ the council was watching the impact on its capital flood defence programme, warning that “one of the big implications of massive fuel costs is cost escalation claims from contractors.” Across the Manawatu, councils including Tararua, Rangitikei, and Horowhenua were monitoring the situation but admitted planning was like “crystal ball-gazing.”
Meanwhile, BusinessDesk reported that waste and recycling collection, an entirely diesel-dependent sector locked into long-term council contracts, could become unsustainable for contractors as fuel costs blow past contractual safeguards.
Supply is a separate problem price drops will not fix
Even if diesel prices stabilise, the supply chain disruption is layered on top. Rendell told councillors Waitaki has a capital works project stalled because the required pipe cannot be sourced, with “no plan for when that pipe is going to be manufactured again.” Finance Minister Nicola Willis confirmed in late March that New Zealand had approximately seven weeks of fuel security, with more supply en route. That is reassurance about availability, not price.
The Commerce Commission’s quarterly monitoring data for Q1 2025 already showed diesel wholesale margins expanding 25% before the Middle East-driven escalation of early 2026. The cost trajectory was baked in before the crisis sharpened.
What business owners need to watch
Infrastructure contractors on council work are the most immediately exposed, particularly smaller firms without the balance sheet to absorb months of margin compression. But the second-order effects matter more broadly. Councils that cannot raise rates further will defer capital works, meaning roads, water infrastructure, and flood defences get pushed out. Deferred maintenance compounds future costs. It is the fiscal equivalent of skipping oil changes and then replacing the engine.
The irony is sharp. The contract structures designed to protect ratepayers from the last crisis have become the transmission mechanism for this one. Contractors cannot pass costs through. Councils cannot cut scope without penalty. Ratepayers are already facing increases set before the worst hit. Something has to give, and the 45% figure from Waitaki suggests how far the real number has drifted from what anyone is willing to say publicly.
Sources
- Fuel crisis pushing WDC contracting costs up (2026-04-26)
- Waitaki residents facing 19 percent rates hike (2026-04-17)
- West Coast council mulls fuel price impact (2026-03-25)
- Rising fuel prices could force councils to rethink plans (2026-03-24)
- Quarterly fuel monitoring report (Quarter ending March 2025) (2025-06-25)
- Rising fuel costs increase Gisborne District Council roading and waste bills (2026-04-06)
- Fuel crisis: how rising fuel costs affect construction projects and contracts (2026-03-30)