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No matter the product or service, we all want to get the best bang for buck when we make a purchase, especially considering the financial stress many households are now facing. While choosing car insurance may not feel like an exciting shopping expedition, it’s an essential for many Australians, and the value equation is no different.

The price you pay for insurance coverage is referred to as a ‘premium’, and it’s tailored to each driver based on a complex set of personal and demographic factors. We’re going to explore them all here, including how you can lower your premiums and haggle for a better deal.

Related: Our Pick of the Best Car Insurance Providers

How Are Car Insurance Premiums Calculated?

If two people approach an insurance company and apply for the same car insurance policy, it’s unlikely they will be quoted the same price for that cover. This is because car insurance premiums, whether they’re for third party policies or comprehensive cover, are based on how risky you appear as a driver and insurance customer.

Insurance providers take numerous factors into account when determining your risk profile, from your personal demographics to details about your car and your driving record. If they expect you’re more likely to make an insurance claim based on this information—and if they anticipate the claim will be more costly—then you’ll likely be charged a higher premium than others.

Every provider has its own methods for calculating premiums and may apply different weighting to certain factors in the risk mix. That’s why it’s important to compare quotes to find the most affordable offer that ticks all of your car insurance boxes.

When it comes to compulsory third party (CTP) car insurance, which every driver is legally required to hold in Australia, the factors that impact price vary based on the state or territory you live in. In some cases, private insurance companies administer this cover, so premiums are calculated similarly to other levels of car insurance and drivers have greater choice between policies.

Other states operate on a community model, where CTP prices are set by vehicle classes, not insurance history or demographics. However, these premiums do generally have upper and lower limits, with factors like driving infringements and parking location still impacting price.

Factors That Affect Car Insurance Premiums

While every provider has its own method for calculating premiums, there are a few common factors that will usually be considered in this determining a premium. You’ll usually be asked to provide this information when you apply for car insurance.

Age: Insurance providers consider young or inexperienced drivers as more risky (which is reflected in road accident statistics), so those new to the road will usually pay a higher premium.

Gender: Women may be quoted slightly lower premiums, as women are statistically less likely to be involved in accidents or violate road rules. Insurance companies may refer to road crash and casualty statistics showing gender-based trends when weighing this up.

Location: Living in an area with higher levels of crime or road incidents that result in insurance claims will generally increase premiums.

Where you park: Parking on the roadside instead of a secure garage increases chances of vandalism, theft and side-swiping, which could result in an insurance claim so it comes with a premium bump-up.

Driving history: If your road record is tarnished with traffic offences, demerit points and a history of crashes, you may be quoted more costly insurance.

Insurance history: Making insurance claims usually results in a higher premium at renewal time, but if you have a claim-free history, you could score discounts. Holding insurance with the same provider for a certain number of years could also shave money off your premium.

Car model, age and modifications: If your insurance covers damages to your own car (i.e. fire and theft or comprehensive), your car’s specs will impact the premium. Providers need to know the cost of repairing or replacing your vehicle, and doing so for certain models and modifications will cost more than others.

Car valuation: You and the insurance company must agree on what your car is worth if you’re covering it for damages. You can usually choose between the ‘market value’ (a reasonable selling price at the time you make a claim) or an ‘agreed value’ which you set for the entire policy period. Market value is generally the cheaper option, as it isn’t based on customer preference and can vary alongside the car market.

Excess choices: When you make an insurance claim, you usually pay an agreed fee (the ‘excess’) before the policy covers the remaining costs of the damages. Setting your excess higher will generally decrease your premium, and vice versa.

Policy level: The more your car insurance covers, the more it will cost. Third-party policies are generally the cheapest option, followed by fire and theft cover and comprehensive car insurance.

8 Ways To Lower The Cost Of Your Car Insurance Premiums

If you know how to make the most of these discounts and premium-slashing choices, you can cut your car insurance costs considerably.

Purchase New Policies Online

If you are taking out car insurance for the first time or looking to switch providers, apply online. You’ll often be rewarded with a discount for saving the insurance company’s time compared to an application submitted over the phone or in person. These discounts often range from 5% to 20%, but are usually only applied to the first year of your premium.

Pay Annually

Some insurance providers will reward customers who pay their premium in full up-front. Having the option to pay monthly or even weekly may work better in your budget, so be sure to carefully consider each option when signing your insurance contract.

Bundle Your Insurance

If you need home, contents or life insurance, or have other cars in your household that need insuring, you can often bundle these in a multi-policy or multi-car deal with a single provider and earn a discount. Be sure to compare other options and providers for each of these insurance products to ensure the discount makes it the most competitive option for you.

Drive Less

Many car insurance companies now offer or specialise in pay-as-you-drive cover that rewards those who drive less and are thus less likely to be involved in an accident. Most of these policies set a limit on the distance you drive each year (usually less than 20,000km), and as long as you stay below the limit, you receive a premium reduction. This is a great option for people driving infrequently, only for short trips or if you use public transport for regular commuting. Make sure you stick to the limit, as you won’t be covered if you exceed it and get in an accident. You can usually increase the limit if necessary, but this can come with a fee.

Stay Loyal to Your Insurance Provider

If you hold insurance with the same provider for many years, you may be offered a loyalty discount. This usually increases over time, often starting at 5% or less for a few years’ loyalty,  but climbing beyond a 60% discount once you get into the decades territory. You may need to contact your provider to receive this discount.

Don’t Make Claims Unless Necessary

If you’re lucky enough to avoid situations where an insurance claim is required for a number of years, you may receive or request a no-claims discount. Saving the insurance company money in this way could earn you as much as a 70% discount over time, and it’s often transferable if you change providers. Just remember if you do make a claim, this discount will usually be dropped.

Don’t Let Everyone Drive Your Car

Do any young or inexperienced drivers use your car? If the answer is ‘no’, then let your insurance company know about it and you could score a restricted driver discount. These types of drivers are statistically more likely to get in a road accident or make an insurance claim, so banning them from sitting behind your wheel is a good way to avoid that risk and keep your premiums down.

Compare the Market and Switch to a Cheaper Option

It’s a good idea to reassess your car insurance in the lead up to your policy renewal each year. If you get a few quotes from other providers and find a better deal, consider switching providers. Be sure to communicate this with your current car insurance company first—they may match or beat the offers you have on the table to retain you as a customer.

Why Do Car Insurance Premiums Go Up Every Year?

In August 2023, the Australian Prudential Regulation Authority (APRA) noted that insurance companies raised premiums over the last quarter “in response to recent higher claims costs”. This increase isn’t tied to a rising number of claims, but rather what it costs insurance providers to fulfil claims. This is often outside of a customer’s control, generally coming down to a combination of four main factors: inflation, taxes, natural disasters and personal circumstances.

Inflation: This will be biting many motorists the hardest at the moment. The consumer price index (CPI) has seen seismic shifts over the last year. Most recently, it was recorded as rising 6% in the 12 months to June 2023 which is well above the Reserve Bank’s 2% to 3% target. Insurance costs, like most other goods and services, increase as inflation rises, reflecting the higher cost of organising spare parts and repairs, as well as the overall value of insured vehicles.

Taxes: If the governing bodies in your state or territory decide to increase duties and levies related to road users, this will impact your premium (including CTP). States may periodically review these costs and overhaul compulsory insurance requirements if they recognise that costs are unmanageable or coverage isn’t suitable (this recently occurred in NSW).

Natural disasters: Whether it’s storms, fires, floods or hail, unforeseeable natural events spark insurance claims which drives up premiums. Insurance Australia Group (IAG)—the country’s biggest general insurance company that underwrites brands including NRMA Insurance, CGU, SGIO and many others—raised vehicle insurance premiums by a whopping 14% over the last year. In its 2023 end of financial year report, “climate change and natural perils” were cited as key drivers of rising insurance premiums.

Changes to Your Circumstances: If over the course of your last coverage period you’ve made a car insurance claim, received road fines or moved somewhere with a higher crime rate, you’ll likely see a premium bump-up. On paper, changes like these increase the probability that you may be involved in future incidents that could result in an insurance claim. Insurance companies try to mitigate the potential risk of having to pay out claims by charging you more.

How To Negotiate Car Insurance Premiums

You’d be surprised by how flexible many insurance companies are when it comes to price. If you come properly prepared, you may be able to knock a considerable amount off of your premium. Follow the tips below to help you haggle down your car insurance costs.

  1. Do your research: Whether you want to switch providers or stay where you are with a better deal, you need to have an accurate understanding of the current car insurance market and the cards you hold as a driver. All insurance providers must list the product disclosure statement (PDS) for each policy online, and there are numerous online resources for additional insight. Read through all of this information to better understand what is and isn’t commonly covered by your preferred insurance companies. It also costs nothing to get an online quote, so fill out a few and see what kind of premiums you’re offered based on your personal circumstances.
  2. Approach your current insurance provider with quotes: Even if you find a cheaper policy on the market with more features, it’s worth asking your current provider if they can match this price or inclusions. It’s in their best interest to keep you as a customer, but you may also have accrued loyalty discounts or other bonuses with this company that are worth keeping intact. The ideal time to have this conversation is towards the end of your policy period, as it creates some urgency for the provider to offer a better deal to keep you on.
  3. Reference changes in your circumstances: If you’re driving less or no longer classify as a young or inexperienced driver, make sure your insurance company knows about it. These factors and a stellar driving and claims history make you an appealing insurance customer.
  4. Be ready to bluff, but also to walk away. If your provider knows you’re serious about potentially switching policies, they may be more likely to meet your request. But if they’re not willing to give an inch and there is a superior policy that will be more affordable in the long run, be prepared to make the switch.
  5. Nervous? Haggle online. If you get a little flustered by confrontation over the phone, put all of this information down in writing instead. Most insurance customers are happy to negotiate (to a point) via email or web-chat, so take that route if it’s going to serve you best.

Frequently Asked Questions (FAQs)

How much does car insurance cost in Australia?

This is the big question on every cautious motorist’s mind, but it’s very difficult to answer outright. Because insurance premiums are set based on each driver’s risk profile, it’s nearly impossible to suggest an accurate average insurance premium in Australia. As an overarching rule, you can expect third party premiums to be lower, and comprehensive options to be considerably higher.

What is a good premium for car insurance?

The best premium for any one driver is a price that fits in their budget on a policy that covers all their needs as a car owner and driver.

There’s no point purchasing a very cheap insurance policy if your car is quite valuable and an essential transport method in your life. While you may save on premiums, you’ll find yourself in a tricky spot if your insurance doesn’t cover repairs or replacement and you need a car to get to work or support your family. Conversely, if you have extensive cover that goes beyond what your car is worth or how you use it, then you’re throwing money away.

Does car insurance increase after making a claim?

It’s not a certainty, but it is likely that your car insurance premium will increase at renewal time if you make a claim in the previous year. It won’t happen until you do reach the end of your policy period, since your insurance company has effectively taken on the risk that you make a claim in that time. If they consider that the event and claim has increased your risk profile as a driver and insurance customer, then they will generally increase your premium.

You aren’t obligated to stay with the same insurance provider each year, so be sure to consider other options if your insurance gets bumped up because of a claim. Just don’t forget about any discounts or bonuses you may lose when switching providers.

Will a cheap car insurance policy be enough?

As long as you’ve factored in your needs as a driver, a more affordable policy isn’t necessarily less effective than an expensive option. If you’re only concerned with covering potential damages you may cause to other people’s vehicles and property while driving, a cheaper third party policy is adequate.

If you do choose the generally more expensive comprehensive option, prices will vary considerably depending on you and your car. There’s not point insuring your vehicle beyond what it’s worth, so a cheaper option within this level of insurance may still be the best fit.

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