Te Komihana Tauhokohoko Commerce Commission

Making New Zealanders better off because markets work well and consumers and businesses are confident market participants.

Think a business or person isn’t complying with one of the laws we enforce?

Cracking down on cartels

New Zealand taxpayers are being ripped off to the tune of $360 million a year because of bid-rigging in public procurement. This estimated harm illustrates the importance of the Commission’s ongoing enforcement and educational efforts.
Regulating development levies

The Government has confirmed the Commerce Commission as the independent regulator of the new development levies system. This will help ensure greater transparency and fairness in levy decisions, while building trust and confidence among councils, developers and communities.
Dr John Small Water NZ address

In his keynote address at the Water NZ Conference, Dr John Small explains the Commission's risk-based approach to regulating water and how tools such as information disclosure, benchmarking and targeted regulation support better outcomes for consumers.
Enforcement and compliance priorities

We've published our enforcement and compliance priorities for the year ahead. These set out the key behaviours and practices we’ll focus on to strengthen competition and improve value and choice for New Zealanders.

Latest news

01 Oct 2026

Clearance sought for 2degrees & One NZ to form joint venture to operate radio access network assets

The Commerce Commission has received an application relating to a proposed joint venture that would own and operate the Radio Access Network (RAN) assets currently owned by Two Degrees Mobile Limited and Two Degrees Networks Limited (together, 2degrees) and One New Zealand Group Limited (One NZ).
28 Sep 2026

ComCom estimates bid-rigging in public procurement costing taxpayers $360m a year

New Zealand taxpayers are being ripped off to the tune of $360 million a year because of bid-rigging in public procurement, the Commerce Commission estimates.
23 Sep 2026

ComCom issues draft decision declining NZGA collective bargaining application

The Commerce Commission has issued a draft determination proposing to decline authorisation for New Zealand Gynaecology Association Inc (NZGA) and its members to collectively negotiate.
23 Sep 2026

Commission determines new approach to infrastructure financing costs

The Commerce Commission has confirmed it will change the way it calculates financing costs for regulated infrastructure. This is aimed at providing greater stability for consumers and businesses by reducing the impact of short-term interest rate movements on regulatory settings.