The Reserve Bank of New Zealand (RBNZ) is the prudential regulator for all licensed NZ insurers, including life insurers, under the Insurance (Prudential Supervision) Act 2010 (IPSA). Prudential supervision is the discipline that asks "is this insurer financially strong enough to pay its future claims?".
What the RBNZ does
- Licenses every insurer carrying retail risk in NZ. The register is published at rbnz.govt.nz/regulation-and-supervision/insurers/register-of-licensed-insurers.
- Sets the solvency standard. A minimum capital ratio each insurer must maintain relative to its insurance and other liabilities.
- Reviews each insurer's financial position annually. Public summaries of supervisory work are released periodically.
- Approves the financial-strength rating each insurer must hold from an approved rating agency (S&P, AM Best, Fitch, etc.) and disclose to policyholders.
The solvency standard, in plain terms
Each licensed insurer must hold capital (own funds) of at least the level required by the RBNZ's prescribed Solvency Standard. The standard is calibrated so the insurer can withstand specified adverse scenarios and still meet its obligations to policyholders. The current standard documentation is published at rbnz.govt.nz/regulation-and-supervision/insurers/standards-and-guidance/solvency-standard.
Insurers publish their solvency ratio (actual capital ÷ required capital) in annual disclosure statements. A ratio comfortably above the required minimum indicates a capital buffer; a ratio below the minimum triggers regulator intervention.
How to read the rating each insurer publishes
Every licensed NZ insurer must hold a current financial-strength rating from an RBNZ-approved rating agency and disclose it on policy documents and websites. The common rating scales (descending from strongest):
- S&P — AAA > AA > A > BBB > BB > B > CCC > CC > R / D
- AM Best — A++/A+ > A/A- > B++/B+ > B/B- > C++/C+ > C/C- > D / E / F
- Fitch — AAA > AA > A > BBB > BB > B > CCC / CC / C / D
The rating is one input among several. A higher rating means a stronger buffer against insolvency; it doesn't tell you about pricing, claims handling fairness, or product quality.
Where to find a specific insurer's rating
- The insurer's own disclosure statement (usually linked in the footer of the insurer's site).
- The RBNZ's licensed-insurer register.
- The product's policy wording document — the rating is reproduced in disclosure sections.
RBNZ vs FMA — different regulators, different jobs
The RBNZ is the prudential regulator (can the insurer pay claims?). The FMA is the conduct regulator (is the insurer treating consumers fairly?). See our companion guide: FMA Conduct of Financial Institutions.
Sources
- RBNZ — register of licensed insurers: rbnz.govt.nz/regulation-and-supervision/insurers/register-of-licensed-insurers
- RBNZ — Solvency Standard for Insurers: rbnz.govt.nz/regulation-and-supervision/insurers/standards-and-guidance/solvency-standard
- Legislation: Insurance (Prudential Supervision) Act 2010