The Cook Strait ferry replacement project hit the government's $1.7 billion funding ceiling in June 2026, triggering scope cuts and drawing an Amber rating in a Gateway review.
Ferry Project Reaches Spending Limit
The Cook Strait ferry replacement project reached the government's $1.704 billion Crown funding cap in June 2026. A final approval business case confirmed the full amount is required after third-party contributions.
The project replaces the previous iReX programme, which incurred $671 million in sunk costs before cancellation. Treasury had warned iReX could reach $4 billion.
Cost Breakdown
- Ships: $596 million fixed-price contract with Guangzhou Shipyard International
- Wellington infrastructure: $403 million
- Programme management and contingency: $426 million
- Picton rail-yard upgrades and auto-mooring: additional $37.5 million
Third-party funding of $220 million from Port Marlborough and CentrePort kept Crown exposure at $1.704 billion.
Gateway Review Findings
The June 2026 Gateway review assigned an Amber rating. It found the project feasible but flagged significant issues.
There is limited evidence of a structured investment logic linking problem definition, options assessment and the preferred solution, and no clear economic framework such as a cost-benefit analysis or equivalent.
The review noted better scores on commercial, financial and management elements. It highlighted risks including the Iran conflict, staff retention and timely port works.
Fiscal Discipline Approach
Minister for Rail Winston Peters defended the minimum viable scope. He stated spending less than $1.7 billion delivered $2.3 billion in taxpayer savings compared to prior plans.
We have only added cost where the taxpayer and ratepayer was not paying, where it added commercial value, and where we could be assured it would not delay the programme.
Spending less than $1.7 billion means the taxpayer has saved $2.3 billion while still getting the ferries and infrastructure they want, because we have done away with the expensive consultants who hijacked the project by adding more and more infrastructure until Treasury warned the project would cost $4 billion.
Ferry Holdings Limited, established in 2025, manages the programme with a fixed-price ship contract and port co-funding. New vessels are due in 2029.
Risks and Transparency Gaps
The absence of a formal cost-benefit analysis limits confidence that the chosen scope represents the optimal outcome. The review recommended improved documentation and a unified risk framework.
The 20 percent contingency is intended to absorb changes without breaching the cap. Delivery depends on completing infrastructure before ship arrival.
Outlook
The reset emphasises cost control after years of escalation under the prior programme. Successful delivery would stabilise the Cook Strait link for freight and passengers. Any overruns would test the governance model ahead of the 2029 service entry.
