New Zealand’s insurance industry in 2025 is both dynamic and highly concentrated. If you are searching for the largest and fastest-growing insurance companies in New Zealand, I’ve got you covered. IAG New Zealand and Suncorp dominate the general insurance market, while life and health insurers continue to show robust growth.
Below, I profile the top ten insurers by market size, highlight their backgrounds and specialties, and explain why each holds a leading position.
1. IAG New Zealand
Background & Brands: IAG NZ is the largest insurer in New Zealand, operating well-known brands such as AMI, State, NZI, NAC, Lantern and Lumley. It serves nearly two million customers and holds the leading share of general insurance premiums in the country.
Specialist Policies:
- Home and contents
- Auto and vehicle
- Business, commercial, farm and marine
- Travel and breakdown insurance via DriveRight and Mike Henry Travel
Why IAG New Zealand is the Largest
IAG posted NZD 4.12 billion in gross written premiums in 2024 (up ~15%) and insurance profit rose sharply. Their market dominance is supported by investments in AI claims tools like FRISS, which boosted productivity nearly 47%.
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2. Suncorp New Zealand (Vero / AA Insurance)
Background & Brands: Suncorp NZ operates via Vero Insurance and its AA Insurance joint venture with NZAA and Suncorp.
Specialist Policies:
- Personal motor, home, contents
- Commercial insurance for SMEs
- Travel and specialty risk insurance
- AA Insurance focuses on direct car, home, contents and small business lines
The Market Position of Suncorp
Suncorp held about NZD 2.8 billion GWP in 2024, growing ~17.3% year-on-year. AA Insurance itself insures over half a million customers across more than a million policies.
3. AA Insurance
Though jointly owned by NZAA and Suncorp, AA Insurance markets directly under its own brand. It employs over 1,000 staff and ranks among the most trusted direct insurers in New Zealand.
Policy Focus:
- Car insurance (broad coverage and breakdown options)
- Home + contents
- Small business packages
How Big Is AA Insurance?
AA Insurance has been consistently awarded “Most Trusted Brand” and top customer satisfaction ratings in New Zealand. Their direct-to-customer model and highly rated service make them a heavyweight by premium volume.
4. Tower Insurance
Background: Tower is a leading independent insurer in NZ, with approximately 9.2% share of the personal lines market and over 319,000 customers.
Specialist Policies:
- Home and contents
- Car insurance
- Business and small commercial
- Travel insurance (including tailored senior and cruise packages)
The Amazing Growth Story of Tower Insurance in New Zealand
They returned to profitability with NZD 83.5m net profit in FY2024 versus a loss the year prior. Tower also acquired the TSB insurance portfolio and formed a Kiwibank partnership, accelerating growth and reach.
5. FMG Insurance (Farmers’ Mutual Group)
Background: FMG focuses on the rural and agricultural sector. With about 70,000 loyal rural members and B Corp certification, FMG is a trusted specialist.
Core Products Sold By FMG Insurance to New Zealand Policyholders:
- Farm motor and vehicle insurance
- Farm property and livestock
- Commercial rural liability and personal lines for rural families
Why FMG Insurance Ranks Highly Among the Fastest-Growing Insurance Companies in New Zealand
FMG’s mission-driven model and rural loyalty strategies drive steady premium growth. They are the go-to insurer for farming communities in New Zealand.
6. Southern Cross Health Society
Background: New Zealand’s largest private health insurer, created in the early 1960s as a friendly society. It operates not-for-profit and covers over 940,000 members (~62% of private health market).
Insurance Focus:
- Private health insurance plans
- Travel insurance and pet insurance via subsidiaries
- Life and personal accident cover in some packages
Why Southern Cross Health Society Leads the Life/Health Segment
They returned NZD 1.099b in healthcare claims in FY2021. Their Affiliated Provider network drives cost efficiency and high membership loyalty.
7. Partners Life
Background: Founded in 2011 in Auckland and backed by reinsurer SCOR, Partners quickly rose in the life and health market. It acquired BNZ Life in 2020, boosting scale.
Specialist Policies:
- Life insurance (term, trauma, total and permanent disability)
- Income protection and health insurance for professionals and families
Growth Drivers
Rapid uptake of life and trauma insurance, combined with acquisition-led expansion, positions them among fastest-growing life insurers in New Zealand.
8. Greenstone Financial Services
Background: Australian-founded in 2007, Greenstone entered NZ in 2019. It distributes direct life and protection products via consumer brands like OneChoice and New Zealand Seniors.
Policy Specialties:
- Life, funeral, income protection
- Health extras, pet, travel, landlord and home insurance
Why Greenstone Financial Services Keep Rising
Greenstone’s D2C model and affinity marketing partnerships drove strong premium growth, especially in direct-to-seniors and affinity channels.
9. QBE New Zealand
Background: Part of global insurer QBE, which dates back 135+ years in Australia, QBE provides general insurance across NZ.
Specialist Policies:
- Commercial property and liability
- Middle-market business insurance
- Farm and marine coverage
Why QBE Is Among the Top Insurance Companies in New Zealand by Market Size
As a reinsurer-backed company, QBE serves medium and large clients, adding scale in commercial lines alongside personal insurance portfolios.
10. Chubb New Zealand
Background: Global insurer with a strong local presence in NZ, offering both corporate and personal P&C solutions.
Product Lines:
- High-net-worth home insurance
- Specialty property and casualty
- Accident, travel and professional indemnity
Competitiveness of Chubb New Zealand
Chubb’s ability to write specialty and high-value policies in corporate and personal lines gives them significant premium volume locally.
Market Trends That Fuel Size and Growth
- Premium growth across general lines: General insurance GWP is projected to grow 10.3% in 2025, with property insurance growth at ~10.6% and motor at ~10.3%.
- Life insurance expansion: Estimated to reach NZD 6.4 billion in 2025 premiums, up from NZD 5.9 billion in 2024 (an 8.2% rise).
- Digital and insurtech adoption: Insurers like Tower and Partners Life invest heavily in cloud-native systems and analytics; IAG implemented FRISS to streamline claims by nearly 47%.
- High climate-related risk pricing: Costs from events like Cyclone Gabrielle increased property loss ratios from ~69% to ~96% in two years.
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Final Thoughts
The insurance market in New Zealand remains robust and increasingly digital. IAG and Suncorp dominate general insurance, while providers such as Southern Cross and Partners Life lead in life and health. Tower and FMG provide strong competition in personal and rural lines. Emerging brands like Greenstone continue to expand niche protections.
As the market grows toward NZD 16.3 billion in general insurance by 2029 and NZD 8.3 billion in life insurance premiums, these top ten insurance companies in New Zealand are shaping industry leadership.
 in New Zealand are IAG, Suncorp, FMG Insurance, Partners Life, QBE, Chubb, AA Insurance, etc.){kind=link}