Established more than 60 years ago, MGI has built a reputation for trusted advice, strong client relationships and technical excellence. Today, we continue that legacy by providing specialist assurance services to some of New Zealand’s most significant and complex infrastructure projects.
With over 20 years of experience providing Assurance services to the Infrastructure Sector, our team has worked on more than 25 Alliance projects throughout New Zealand. Our extensive Alliance experience has enabled us to develop and refine proprietary cost audit programmes tailored to the unique demands of complex infrastructure projects. We also undertake cost reviews on infrastructure projects run by both the private and public sectors.
We are not your typical auditors and we’re proud of that. Infrastructure projects don’t operate in neat spreadsheets and neither do we. We work alongside project teams, ready to roll up our sleeves and we aren’t afraid to don a hard hat and safety boots when the situation requires it. This embedded approach allows us to deliver assurance that is commercially grounded, technically robust and genuinely useful for decision-makers.
Our team is known for our collaborative style, commercial awareness and ability to navigate complex stakeholder environments with clarity and confidence. At MGI Assurance, we value long-term relationships and are a trusted advisor to clients who operate in high‑risk, high‑value project settings.
Much of our work happens behind the scenes, but its purpose is clear: to support confidence, accountability and successful outcomes for infrastructure projects that matter.
MGI Assurance is part of MGI Worldwide, a leading international network of independent audit, tax and advisory firms operating across more than 100 countries. As part of a global network, we draw on international insights, proven methodologies and shared expertise, while remaining firmly grounded in local context. This connection strengthens the assurance we deliver for projects here in New Zealand.
At our core, we are about delivering assurance that adds value – not just compliance.
Are you looking for peace of mind on your next project? We’ve got you covered.