Your insurance premium is not a random number. It is the result of dozens of factors that insurers use to assess how likely you are to make a claim and how much that claim could cost. This guide breaks down the key drivers behind insurance pricing in NZ - and explains what you can (and cannot) do to influence them.
Several characteristics about you as an individual feed into the premium you are quoted. These vary by the type of insurance, but a number of personal factors are common across most products.
Age - Age is one of the biggest rating factors, especially for car insurance and life insurance. Younger drivers (under 25) statistically have a higher accident rate, so they tend to pay more for car cover. With life insurance and health insurance, premiums typically increase as you get older because the likelihood of a claim rises with age.
Occupation - Some insurers factor your occupation into their pricing. Certain jobs are associated with higher risk - either because of the nature of the work itself or because of statistical patterns in claims data. For income protection insurance, occupation is one of the most significant rating factors because it directly affects the chance of being unable to work.
Claims history - If you have a history of making claims, insurers see you as a higher risk. This applies across all types of insurance. A clean claims record, on the other hand, is rewarded - often through a no-claims bonus that can reduce your premium by up to 65%.
Credit history - In New Zealand, some insurers may consider your credit history as part of their risk assessment. The Consumer NZ guide to credit reports explains how your credit file works and how to check it. Not all insurers use credit data, and its influence on pricing varies.
Driving record - For car and motorcycle insurance, your driving history matters. Demerit points, licence suspensions, and at-fault accidents all signal higher risk. A clean licence with no incidents tells insurers you are a safer bet.
What you are insuring matters just as much as who you are. The characteristics of your vehicle, home, or other property directly affect the cost to insure it.
Vehicle type, make, and model - Insurers maintain detailed data on how different vehicles perform in terms of claims. Cars that are expensive to repair, frequently stolen, or more likely to be involved in serious accidents attract higher premiums. A high-performance sports car will cost more to insure than a modest hatchback - not just because it is worth more, but because the risk profile is different. Vehicles with strong safety ratings from ANCAP may attract lower premiums with some insurers.
Vehicle value - The higher the value of your car, the more it costs to replace or repair, and the more you will pay in premiums. Whether you insure for market value or agreed value also affects the premium - agreed value policies tend to cost slightly more because the payout is fixed.
Vehicle age and modifications - Older vehicles may cost less to insure (lower replacement value) but can also lack modern safety features. Modifications - such as turbo kits, lowered suspension, or aftermarket body kits - can increase premiums because they raise the repair or replacement cost and may affect the vehicle's risk profile.
Property construction and age - For house insurance, your home's construction materials, age, and condition all play a role. Older homes may have outdated wiring, weathertight issues, or less resilient building materials. A well-maintained modern home built to current NZ Building Code standards will generally attract a lower premium.
Sum insured - This is the maximum amount your insurer will pay out. A higher sum insured means more potential exposure for the insurer, which translates to a higher premium. Getting your sum insured right is important - too low and you may be underinsured, too high and you may be overpaying. The Sorted.org.nz insurance guide has useful advice on calculating the right sum insured.
While many premium factors are outside your control, two of the most powerful levers are entirely in your hands: the level of cover you choose and the excess you set.
Level of cover - The more comprehensive your insurance, the more it costs. With car insurance, for example, comprehensive cover (which protects your own vehicle as well as third-party damage) costs significantly more than third-party fire and theft or third-party only. Choosing the right level of cover for your situation - rather than defaulting to the most expensive option - can make a real difference to your premium.
Excess amount - Your excess is the amount you pay out of pocket when you make a claim. The relationship is simple: a higher excess means a lower premium, because you are agreeing to absorb more of the cost yourself. Most NZ insurers let you choose a voluntary excess on top of their standard (compulsory) excess.
There is also a special excess that applies in certain situations. Young driver excess is common on car insurance policies when a driver under 25 is behind the wheel. Natural disaster excess applies on property insurance for earthquake and flood events. These are set by the insurer and are not typically negotiable.
The key is balance. Setting your excess too high to chase a lower premium can backfire if you cannot afford to pay it when you need to claim. A useful rule of thumb: set your excess at an amount you could cover from your savings right now without stress.
For a detailed breakdown of how excess works, including the different types and how to choose the right amount, see our guide: What is an Insurance Excess?
Where you live has a major influence on your insurance premium, and New Zealand's unique geography and natural hazard profile make location an especially significant factor here.
Natural hazard zones - New Zealand sits on the Pacific Ring of Fire, making it one of the most seismically active countries in the world. Insurers use detailed mapping data to assess the earthquake, flood, landslip, and volcanic risk at your specific address. Tower, for example, uses address-level risk pricing, meaning two homes on the same street could receive different premiums depending on their precise location relative to fault lines or flood plains. The Natural Hazards Commission (NHC) provides government-backed cover for the first $300,000 (plus GST) of natural hazard damage to residential buildings, but your private insurer covers anything above that.
Flood and weather exposure - After the Auckland Anniversary floods and Cyclone Gabrielle in early 2023, flood risk has become an even more significant factor in NZ insurance pricing. Properties in low-lying areas, near rivers, or in known flood zones can attract substantially higher premiums. Some properties in the highest-risk areas have seen insurers decline to offer cover altogether.
Crime rates - For car insurance and contents insurance, the crime rate in your area matters. Suburbs with higher rates of vehicle theft, burglary, or vandalism attract higher premiums. NZ Police crime statistics by area feed into the models insurers use. Urban areas tend to cost more than rural areas for theft-related cover, though rural properties may face higher natural hazard premiums.
Proximity to emergency services - How close you are to a fire station can affect house insurance premiums. Properties in remote areas with limited fire service access may attract higher premiums because the potential severity of fire damage is greater.
You cannot change where you live to save on insurance (at least, not easily). But if you have recently moved, make sure your insurer has your correct address - moving from a high-risk area to a lower-risk one could result in a meaningful premium reduction.
Your claims history is one of the most influential factors in determining your premium - and unlike your age or location, it is something you have direct influence over.
Every time you make a claim, it is recorded. Insurers view a pattern of claims as a signal that you are more likely to claim again in the future. Even a single at-fault claim can increase your premium at renewal. Multiple claims within a short period can push your premium up significantly or, in some cases, make it harder to find cover.
The flip side of this is the no-claims bonus (NCB) - a discount that builds up for each year you go without making a claim. With many NZ insurers, a maximum NCB can reduce your premium by up to 65%. That is a substantial saving, and it is one of the biggest incentives for careful driving and avoiding small claims.
This creates an important decision point for minor incidents. If the damage is only slightly above your excess, it may be worth paying for the repair yourself rather than making a claim and losing years of built-up NCB. The maths varies case by case, but it is always worth doing the calculation before lodging a claim.
Several NZ insurers offer NCB protection as an optional extra. This allows you to make one claim (sometimes more) without losing your bonus. Whether this is worth the additional cost depends on the size of your current NCB and how much you would lose if it were reset.
For car insurance specifically, our guide on how to save on car insurance goes into more detail on protecting your NCB and other strategies for keeping premiums down.
While many rating factors are common across insurance types, each product has its own set of key drivers. The table below summarises the main factors that affect premiums for the most common types of insurance in New Zealand.
Keep in mind that every insurer weights these factors differently. The relative importance of each factor can vary between providers, which is why the same person can receive meaningfully different estimates from different insurers for the same type of cover.
| Factor | Car | House | Contents | Health | Life | Travel |
|---|---|---|---|---|---|---|
| Age | High | Low | Low | High | High | High |
| Location | High | Very High | High | Low | Low | Medium |
| Claims history | High | High | High | Medium | Low | Low |
| Value insured | High | High | High | N/A | High | Medium |
| Excess chosen | Medium | Medium | Medium | Medium | N/A | Medium |
| Cover level | High | Medium | Medium | High | High | High |
| Natural hazard zone | Low | Very High | High | N/A | N/A | N/A |
| Crime rate in area | High | Medium | High | N/A | N/A | N/A |
| Occupation | Low | Low | Low | Low | Medium | Low |
| Health / smoking status | N/A | N/A | N/A | Very High | Very High | Medium |
| Vehicle type / safety | Very High | N/A | N/A | N/A | N/A | N/A |
| Building construction | N/A | High | Low | N/A | N/A | N/A |
| Travel destination | N/A | N/A | N/A | N/A | N/A | Very High |
| No-claims bonus | High | Medium | Medium | N/A | N/A | N/A |
While you cannot control every factor that affects your premium, there are several practical steps that may help keep costs manageable. None of these are guaranteed to lower your premium, but each one addresses a factor that insurers take into account.
The Sorted.org.nz insurance guide and Consumer NZ both highlight the importance of shopping around as the single most effective way to manage insurance costs. Insurers price risk differently, which means the cheapest option for one person may not be the cheapest for another.
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