Invercargill City Council has kept its AA+ credit rating from Fitch Ratings for a seventh consecutive year, a result the council says reflects a conservative approach to its finances at a time when its debt is about to climb.

The global credit rating and research company confirmed the rating this month. It said it expected the council to maintain its solid financial performance, with stability and flexibility in both revenue and expenditure.

Fitch also flagged what lies ahead. It said the council's debt would rise within the next few years to fund an expanded capital programme, particularly as the council establishes in-house water services. It judged those borrowings manageable and in keeping with the council's broader operating performance.

Councillor Trish Boyle, who chairs the council's finance and policy committee, said the rating reaffirmed the council's "pragmatic approach to its financial performance".

She credited what she called the council's conservative financial management approach for putting the community in a strong position, both for current residents and for those who come after them.

Boyle said the global economic outlook and a wave of legislative reform had made the financial environment challenging for councils across New Zealand, but Invercargill's approach had left it well placed for the future.

Why the rating matters

A credit rating is an independent assessment of how likely a borrower is to meet its obligations. AA+ sits one notch below the top AAA grade, and a strong rating generally helps a council borrow at lower interest rates.

Councils in New Zealand borrow mainly through the Local Government Funding Agency, which offers lower margins to councils that hold a credit rating.

That matters for Invercargill because the council is part-way through what Mayor Tom Campbell has called one of its most significant infrastructure investments in a generation. The $76.8 million Te Unua Museum of Southland is due to open to the public in 2027, and the council expects to spend a further $5.9 million a year running the museum and the city's art gallery once it opens.

Water is the other big driver. Under the Government's Local Water Done Well reforms, councils must put new arrangements in place for drinking water, wastewater and stormwater, and Invercargill is setting up its water services in-house.

Fitch's comments indicate it expects that work to be paid for partly through borrowing, and that the council can carry the additional debt without undermining its financial position.

Seven years at AA+

The council first received the AA+ rating from Fitch seven years ago and has held it through the pandemic years, a period of high inflation and the October 2025 windstorm, which the council estimated caused about $2.39 million of damage to its parks, roads and property.

Boyle's finance and policy committee is responsible for overseeing the council's budgets and financial strategy, and the Fitch assessment will feed into its work as the council plans the borrowing needed for the years ahead.