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Financial strength ratings explained

Every licensed insurer must hold and disclose a current financial strength rating. Understanding what those letters mean is useful. Reading a rating as a measure of how well an insurer treats claimants is not.

Last reviewed 4 September 2026 · Written and checked by the Best Life Insurance editorial team · How we get paid

In short

  • New Zealand life insurers are licensed and prudentially supervised by the Reserve Bank under the Insurance (Prudential Supervision) Act 2010.
  • That regime requires licensed insurers to hold capital against their risks and to maintain a current financial strength rating from an approved agency.
  • The main agencies used are A.M. Best, S&P Global Ratings and Fitch Ratings, and their scales look similar but are not identical.
  • A rating is an opinion on the insurer’s ability to meet its obligations — not a product quality score and not a claims service score.
  • Ratings change. This page deliberately does not quote any current rating; check the insurer’s own site, where it must be disclosed.
  • A stronger rating does not mean a better policy, and a slightly lower rating on a licensed insurer does not mean your claim is at risk.

What this is, plainly

New Zealand life insurers operate under a prudential regime administered by the Reserve Bank under the Insurance (Prudential Supervision) Act 2010. To be licensed, an insurer must meet solvency standards, hold capital against the risks on its books, satisfy fit-and-proper requirements for its directors, and maintain and disclose a current financial strength rating.

That last requirement is why every insurer’s website carries a line of letters somewhere. The rating is an independent agency’s opinion of the insurer’s capacity to meet its policyholder obligations. It is forward-looking, it is reviewed periodically, and it can be upgraded, downgraded or placed on watch.

It is also routinely over-interpreted. A rating tells you about balance sheet strength and the likelihood the company can pay. It tells you nothing about whether the wording is generous, whether claims are assessed reasonably, or whether underwriting will accept your history.

How the scales work

The three agencies most often seen on New Zealand insurers use similar letter grades with different conventions, running from the strongest categories down through investment grade to vulnerable, with plus and minus modifiers inside categories.

The three agencies commonly used in New Zealand
AgencyScale shapeHow to read it
A.M. BestFinancial Strength Ratings from A++ down through A, B++ and lower categories, with a separate outlookBest specialises in insurance. Its top categories are described as superior and excellent; anything in the A range is a strong insurer by its own framework.
S&P Global RatingsInsurer Financial Strength Ratings from AAA down through AA, A, BBB and below, with + and – modifiersThe familiar credit-rating alphabet. AAA to BBB– are investment grade; below that is speculative grade.
Fitch RatingsInsurer Financial Strength Ratings on a similar AAA to D scale with + and – modifiersBroadly comparable to S&P in shape, though the analysis and criteria behind the letters differ.

Scale structures as generally published by the agencies. Categories and definitions are set by each agency and can be revised — check the agency’s current published scale, and check the insurer’s current rating on the insurer’s own site.

Three things a rating is not

  1. 1It is not a product rating. An insurer with a strong financial rating can sell a narrow wording, and an insurer a notch lower can sell an excellent one. The rating agency is not assessing the terminal illness definition.
  2. 2It is not a claims service rating. Nothing in it measures how reasonably an insurer interprets its own definitions or how long it takes to pay.
  3. 3It is not a guarantee. It is an opinion at a point in time, and it changes. It is also not a government guarantee — New Zealand has no policyholder compensation scheme of the kind some other countries operate.

Not sure what cover you actually need?

That is the question an adviser is there to answer. Tell us your situation and a licensed New Zealand adviser will compare the market and come back with a written recommendation — including where you can cut cover you do not need.

No cost to you and no obligation. General information only — not personalised financial advice.

What to watch for

These are the details that decide whether the cover does what you expected. Read them before you compare on price.

  • The date of the rating and when it was last reviewed — an old rating is less informative than a current one.
  • The outlook attached to it, which signals the agency’s view on the likely direction.
  • Which entity is rated. A group rating is not necessarily the rating of the New Zealand licensed insurer writing your policy.
  • That a brand and its underwriter may have different ratings, because they are different companies.
  • That New Zealand has no policyholder compensation scheme, so prudential supervision and the insurer’s own strength are the protections that exist.
  • That a rating difference of one notch between two licensed insurers is rarely the most important difference between their products.

Where an adviser makes a difference

Every New Zealand insurer writes life and living cover to its own wording, and the words are where the money is. Two policies that look identical on price can pay very differently when it matters. Closing that gap is the entire job of an adviser.

  • An adviser can tell you which licensed entity actually underwrites a policy, which is the entity whose rating matters.
  • Ratings are one input among several. An adviser weighs them against wording quality and underwriting appetite rather than treating them as a ranking.
  • Where an insurer’s rating or outlook changes, an adviser can tell you whether it has practical implications for an existing policy.
  • An adviser can explain what prudential supervision does and does not protect, which is not obvious from the marketing.
  • For large sums insured, an adviser may recommend splitting cover across insurers, which is a diversification decision as well as a pricing one.

There are three ways to buy life cover in New Zealand, and they are not equivalent. You can buy direct from one insurer, which means you see one product range and one underwriting appetite. You can buy through your bank, which usually means a single insurer’s product sold under the bank’s brand, often with narrower definitions. Or you can go through an adviser, who quotes several insurers at once and is required to put your interests first.

The premium you pay is the same either way. Insurers build adviser commission into their pricing whether or not an adviser is involved, so going direct does not get you a discount — it just removes the person whose job is to argue your corner at application and at claim time.

  • An adviser can see which insurer is currently taking your health history on standard terms, and which one will load or exclude it.
  • An adviser can structure cover across two insurers if that produces a better outcome than putting everything with one.
  • An adviser handles the underwriting back-and-forth, and is the person who chases the claim when a family is least able to.
  • An adviser has to document why the recommendation suits you, which is a written record you can hold them to.

What happens if you get in touch

We are a referral service, not an insurer. We do not quote premiums and we do not sell policies. What we do is put you in front of one licensed New Zealand adviser who can compare the market properly.

  1. 1

    You tell us what you are looking at

    The form takes about a minute. Nobody asks for your medical history on a web form — that conversation happens with the adviser, properly, and only once you have decided to proceed.

  2. 2

    An adviser calls you

    A licensed New Zealand adviser talks through your situation: who depends on you, what you owe, what you already have in place, and what you are actually worried about.

  3. 3

    They compare the market

    The adviser quotes across the major insurers, checks which of them will take your health history on the best terms, and puts the options side by side in writing.

  4. 4

    You decide, in your own time

    There is no obligation and no cost to you. If the answer is that you already have enough cover, a good adviser will tell you that.

Frequently asked questions

What does an insurer financial strength rating actually measure?

An independent agency’s opinion of the insurer’s ability to meet its obligations to policyholders — essentially balance sheet strength, capital adequacy, earnings and risk profile. It is forward-looking and reviewed periodically. It does not measure the quality of the policy wording, the fairness of claims assessment, or the insurer’s underwriting appetite for your health history.

What happens to my policy if my insurer fails?

New Zealand does not operate a policyholder compensation scheme of the kind some other countries have. The protections that exist are prudential: licensing, solvency standards, capital requirements and supervision by the Reserve Bank, plus the statutory framework for dealing with a distressed insurer. That is why the licensing status of the underwriter is worth confirming before you buy.

Which is better, an A.M. Best rating or an S&P rating?

Neither. They are different agencies with different criteria and different scales, and an insurer may be rated by one and not the other. Do not try to convert between them or treat a letter from one as equivalent to the same letter from the other. Read the rating alongside the agency’s own published definition of that category.

Where can I check a New Zealand insurer’s current financial strength rating?

On the insurer’s own website and in its disclosure documents, where licensed insurers must publish it. Check the date of the rating, the outlook attached to it, and which legal entity is rated — a global group rating is not necessarily the rating of the New Zealand licensed insurer writing your policy.

Should I pay more for a policy from a higher-rated insurer?

Rarely on that basis alone. All licensed New Zealand insurers meet the same prudential requirements, and a one-notch difference between two licensed insurers is usually less consequential than a difference in the terminal illness definition, the TPD conversion age or the income protection offset clause. Weigh the rating as one input, not as the ranking.

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