Life Insurance with a High BMI in NZ: What to Expect
If you have ever applied for life insurance in New Zealand, you will know that your weight comes up during the application process. Insurers use body mass index (BMI) as one of their standard health metrics, and if yours falls above a certain threshold, it can affect your premiums, the terms of your cover, or whether you are offered cover at all.
This is a topic that affects a significant portion of the population. According to the New Zealand Health Survey, roughly one in three New Zealand adults is classified as obese (a BMI of 30 or above), and a further one in three is classified as overweight. That means the majority of Kiwis applying for insurance will have their weight considered as part of the underwriting process.
The good news is that a high BMI does not automatically disqualify you from getting cover. But it does change the conversation. This guide explains how insurers assess weight, what outcomes to expect at different BMI levels, and what you can do to get the best possible result.
How Insurers Use BMI in Underwriting
New Zealand insurers use BMI, calculated by dividing weight in kilograms by the square of height in metres, as a standard health metric because higher BMI correlates statistically with cardiovascular disease, Type 2 diabetes, certain cancers and sleep apnoea. A person weighing 90 kg at 1.75 m has a BMI of 29.4, which is classed as overweight.
Insurers use BMI because it is a quick, standardised measure that correlates statistically with a range of health risks, including cardiovascular disease, Type 2 diabetes, certain cancers, and sleep apnoea. From an actuarial perspective, higher BMI is associated with higher claims rates, and insurers price their products accordingly.
Most New Zealand insurers will ask for your height and weight on the application form. Some may request additional measurements, such as waist circumference, particularly for borderline cases. If your BMI is significantly elevated, the insurer may request a medical examination, blood tests, or a report from your GP before making a decision.
It is worth understanding that BMI is just one factor in the overall underwriting assessment. Insurers also consider your age, smoking status, occupation, medical history, family history, and lifestyle. A high BMI combined with well-controlled health markers (normal blood pressure, healthy cholesterol, no diabetes) will typically receive a better outcome than a high BMI with associated comorbidities.
BMI Thresholds and Typical Underwriting Outcomes
BMI thresholds shape underwriting outcomes for life insurance in New Zealand. A BMI of 25.0 to 29.9 generally attracts standard terms, 30.0 to 34.9 standard terms to a loading of 25% to 50%, 35.0 to 39.9 a loading of 50% to 100%, 40.0 to 44.9 a loading of 75% to 150% or deferral, and 45.0 or above deferral or decline.
| BMI Range | Classification | Typical Underwriting Outcome |
|---|---|---|
| 18.5 to 24.9 | Normal weight | Standard terms. No impact on premiums. |
| 25.0 to 29.9 | Overweight | Generally standard terms. Some insurers may note it but apply no loading. |
| 30.0 to 34.9 | Obese (Class I) | Standard terms to moderate loading (+25% to +50%). Depends on overall health. |
| 35.0 to 39.9 | Obese (Class II) | Moderate to significant loading (+50% to +100%). May trigger additional medical enquiries. |
| 40.0 to 44.9 | Obese (Class III) | Significant loading (+75% to +150%) or possible deferral. Insurers will want detailed medical information. |
| 45.0 and above | Severe obesity | Deferral or decline likely with most insurers. Some may consider on a case-by-case basis with strong medical evidence. |
Important notes about this table:
- These are indicative ranges only. Different insurers have different thresholds and risk appetites.
- Your overall health profile matters enormously. A BMI of 33 with no associated health issues will be viewed very differently from a BMI of 33 with Type 2 diabetes and high blood pressure.
- Loadings are not necessarily permanent. Some insurers will review a loading after a set period, particularly if you can demonstrate sustained weight loss.
- A decline from one insurer does not mean all insurers will decline you. This is one of the key reasons to work with an licensed financial adviser who knows which insurers are more flexible on BMI.
What Premium Loadings Actually Mean
A premium loading increases your base premium by a set percentage to reflect the additional risk, and BMI loadings in New Zealand typically range from +25% to +150% depending on severity. BMI loadings are usually applied on top of any other loading, so a separate pre-existing condition that also attracts a loading can make the combined increase substantial.
Here is what that looks like in practice:
Take a 35-year-old non-smoking male applying for $500,000 of life cover. The loading is applied as a straight multiplier on whatever his standard premium would be:
| Loading | What you pay relative to the standard rate | Effect over a long policy |
|---|---|---|
| No loading (standard) | The base rate for his age, gender and cover amount | Baseline |
| +25% | A quarter more than the base rate | Modest at first, but it applies to every payment for the life of the policy |
| +50% | Half as much again as the base rate | The point at which most people start actively shopping other insurers |
| +75% | Three quarters more than the base rate | Worth a full market comparison, as appetites differ sharply at this level |
| +100% | Double the base rate | You are paying twice the standard price for identical cover |
| +150% | Two and a half times the base rate | The top of the usual BMI loading range before a decline becomes likely |
Because a loading is a percentage rather than a fixed amount, it scales with everything else that drives your premium: age, cover amount and premium structure. A 50% loading therefore adds real cost over time, which is why it is worth understanding what you can do to minimise or avoid it.
It is also worth noting that BMI loadings are typically applied on top of any other loadings. If you have a separate pre-existing condition that also attracts a loading, the combined increase can be substantial.
The Limitations of BMI as a Measure
BMI does not distinguish between muscle mass and fat mass, so a highly muscular person can sit in the obese range while being in excellent cardiovascular health. BMI categories were developed using predominantly European population data and do not always reflect health reality for Maori and Pasifika peoples, though most New Zealand insurers still use the standard WHO categories.
This is particularly relevant for:
- Athletes and regular gym-goers who carry significant muscle mass
- People with naturally larger builds, including many Maori and Pacific Island populations, where average body composition differs from the European populations that BMI categories were originally designed around
- Younger adults who may carry extra weight but have no associated health conditions
The New Zealand context is important here. BMI categories were developed using predominantly European population data, and they do not always reflect the health reality for Maori and Pasifika peoples, who tend to have higher proportions of lean muscle mass at the same BMI level. Some health researchers have argued that the BMI thresholds for obesity should be adjusted for different ethnic groups, though most insurers still use the standard WHO categories.
If you believe your BMI does not accurately reflect your health, the best approach is to provide supporting medical evidence. This might include blood test results showing healthy cholesterol and blood sugar levels, a clear cardiovascular assessment, or documentation of your fitness level and body composition.
What Information Insurers Ask For
When BMI is a factor in a New Zealand insurance application, insurers ask for your height and weight, your weight history over recent years, any related conditions such as diabetes, high blood pressure, high cholesterol, sleep apnoea or joint problems, your medications, and often a GP report plus blood tests covering fasting glucose, HbA1c, liver function and a lipid panel.
- Height and weight. This is standard on every application form.
- Weight history. Have you gained or lost significant weight in recent years? Sudden or unexplained weight changes can raise flags beyond the BMI itself.
- Related medical conditions. Do you have diabetes, high blood pressure, high cholesterol, sleep apnoea, or joint problems? These comorbidities significantly influence the underwriting outcome.
- Medications. Are you taking any medications related to weight management or associated conditions?
- GP or specialist reports. For higher BMIs, the insurer may request a report from your doctor. This report typically covers your medical history, recent test results, and your doctor's assessment of your health.
- Blood tests. The insurer may request fasting blood glucose, HbA1c, liver function tests, and a lipid panel to assess metabolic health.
Honesty is essential. If you understate your weight or fail to disclose related conditions, you risk having a claim declined later on the grounds of non-disclosure. Insurers can and do request medical records to verify the information provided at application.
Strategies for Getting Better Outcomes
Getting a better BMI outcome in New Zealand starts with recent blood tests showing normal cholesterol, blood sugar, blood pressure and liver function, because insurers view a high BMI with clean health markers far more favourably. A GP letter documenting a stable or declining weight over the past two to three years, fitness evidence and adviser pre-assessment all help.
1. Get your medical evidence in order
Before applying, visit your GP and get recent blood tests done. If your cholesterol, blood sugar, blood pressure, and liver function are all within normal ranges, this is powerful evidence that your weight is not currently causing health problems. Insurers view a high BMI with clean health markers much more favourably than a high BMI with associated complications.
2. Document a stable weight history
Insurers are more concerned by a BMI that is rising than one that is stable or declining. If your weight has been stable for several years, or if you have been gradually losing weight, make sure the insurer knows this. A GP letter documenting your weight trend over the past two to three years can help.
3. Provide fitness evidence
If you are physically active despite a higher BMI, providing evidence of your fitness can support your application. This might include gym records, participation in organised sports, or results from a fitness assessment. Some insurers take note of an active lifestyle even if the BMI number is above their standard threshold.
4. Consider the timing of your application
If you are actively losing weight and expect your BMI to be significantly lower in six to twelve months, it may be worth waiting before applying, provided you have no urgent need for cover. However, this needs to be balanced against the risk of applying at an older age or experiencing a health event in the interim. An adviser can help you weigh up these factors.
5. Work with a licensed financial adviser
This is arguably the most important strategy. An adviser who works across multiple insurers knows which companies are more lenient on BMI thresholds, which underwriters are more receptive to supporting medical evidence, and how to present your application in the best possible light. They can also arrange pre-assessment with multiple insurers to find the best terms before lodging a formal application.
Get a free, no-obligation insurance review. QuoteHub's licensed advisers work across all major NZ insurers and can help you find suitable cover at a fair price, regardless of your BMI. Start your free check here.
How Different Insurance Types Are Affected
BMI affects New Zealand insurance products unequally. Life insurance is the most accessible, with outright declines uncommon unless BMI is above 45 or comorbidities exist. Income protection and trauma cover attract higher loadings than life cover at the same BMI, while private health insurers generally apply pre-existing condition exclusions rather than BMI-based loadings.
Life insurance (death cover)
Life insurance is generally the most accessible cover for people with a high BMI. While loadings apply, outright declines are relatively uncommon unless BMI is very high (typically above 45) or there are significant comorbidities. This is because the correlation between elevated BMI and mortality, while real, develops over longer timeframes.
Income protection insurance
Income protection is more sensitive to BMI than life cover. Insurers are concerned about the risk of disability claims related to conditions associated with higher BMI, such as musculoskeletal problems, cardiovascular events, and diabetes complications. Loadings tend to be higher for income protection than for life cover at the same BMI level, and some insurers may apply exclusions for specific conditions.
Trauma (critical illness) insurance
Trauma cover is particularly affected by BMI because many of the conditions it covers, including heart attack, stroke, cancer, and diabetes complications, are statistically more common at higher BMI levels. Expect higher loadings for trauma cover compared to life cover, and be prepared for the possibility of specific condition exclusions.
Health insurance
Private health insurance in New Zealand generally does not use BMI-based loadings in the same way that life insurers do. Most health insurers apply pre-existing condition exclusions rather than premium loadings. However, if you have existing conditions related to your weight (such as diabetes or sleep apnoea), these may be excluded from your health cover.
The Role of an Adviser
A licensed financial adviser makes the biggest difference for New Zealand applicants with a high BMI, because insurers set meaningfully different thresholds. An adviser can arrange informal pre-assessments with several insurers before any formal record is created, present supporting medical and fitness evidence upfront, and revisit a loading after 12 to 24 months of documented improvement.
Market knowledge. Different insurers have meaningfully different approaches to BMI. Some are stricter on their thresholds while others take a more holistic view. An adviser who works across the market knows where to place your application for the best outcome.
Pre-assessment. A good adviser will arrange informal pre-assessments with multiple insurers before lodging a formal application. This means you can find out the likely terms without creating a formal record of enquiry. If one insurer is likely to decline, the adviser simply does not apply there.
Application presentation. How your application is presented matters. An adviser can ensure that supporting medical evidence, fitness information, and weight history are included upfront, rather than leaving the underwriter to form a view based solely on a BMI number.
Ongoing review. If you receive a loading now, your adviser can help you review it in the future. If your BMI decreases or your health markers improve, there may be grounds to have the loading reduced or removed. Some insurers are open to reassessment after 12 to 24 months of documented improvement.
Comparing overall value. An adviser does not just find the cheapest price. They compare policy features, claims processes, and insurer track records to make sure the cover you get will actually perform when you need it.
Talk to a QuoteHub adviser today. We will compare options across all major NZ insurers and find you suitable cover on fair terms. It is free, and there is no obligation. Get started here.
Frequently Asked Questions
Can I get life insurance if my BMI is over 40?
Yes, it is possible, though your options will be more limited and premiums will be higher. At a BMI above 40, many insurers will apply significant loadings (75% to 150% or more), and some may defer or decline. Working with an adviser is essential at this level, as they can identify the insurers most likely to offer cover and present your application with full supporting medical evidence.
Will losing weight reduce my premiums?
It can. If you lose a significant amount of weight after your policy is in force, you can ask your insurer (or your adviser) to reassess your loading. Most insurers require that your new weight has been stable for at least 12 months before they will consider a reduction. You will typically need to provide updated medical evidence, including current height and weight, and recent blood test results.
Do insurers only look at BMI, or do they consider other measures?
BMI is the primary metric, but it is not the only factor. Insurers also consider waist circumference in some cases, and they look at the overall health picture: blood pressure, cholesterol, blood sugar, liver function, and any associated medical conditions. If your BMI is high but your other health markers are normal, the outcome is generally better than the BMI alone would suggest.
Is BMI assessed differently for Maori and Pasifika applicants?
Most New Zealand insurers still use the standard WHO BMI categories regardless of ethnicity. However, many underwriters are aware that BMI can overestimate health risk for Maori and Pacific Island populations due to differences in body composition. Providing supporting medical evidence (blood tests, fitness data, body composition analysis) can help demonstrate that a higher BMI is not associated with the health risks the underwriter might otherwise assume.
What happens if I do not disclose my correct weight?
Non-disclosure is a serious issue in insurance. If you understate your weight on your application and later make a claim, the insurer can investigate and may decline the claim if the undisclosed information would have changed their underwriting decision. Always provide accurate information. If you are concerned about the impact on your application, work with an adviser who can manage the process and find the right insurer for your situation.
Does BMI affect my ability to increase my cover later?
It depends on your policy structure. Some policies include built-in increase options (sometimes called guaranteed insurability options or future insurability benefits) that allow you to increase your cover at certain life events without additional medical underwriting. If your BMI is likely to increase over time, securing a policy with strong increase options while your health profile is favourable can be a smart strategy.
Disclaimer: This article is general information only and does not constitute personalised financial advice. Insurance terms, loadings, and underwriting criteria vary between providers and individual circumstances. For advice tailored to your situation, speak with a licensed financial adviser. Financial advice is provided by Craig Smith Business Services Limited, trading as Smiths Insurance & KiwiSaver, a licensed Financial Advice Provider (FSP712931). QuoteHub is a trading name. Henry Smith is a Financial Adviser (FSP1010699).
References
- Financial Markets Authority (FMA), Insurance guidance
- ACC New Zealand
- Sorted.org.nz, Insurance guides
- Insurance & Financial Services Ombudsman (IFSO)
- MoneyHub NZ, Insurance resources
- Diabetes New Zealand
- Cancer Society of New Zealand
- Heart Foundation NZ
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