What Voids Car Insurance?

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Last Updated 31/03/2026
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Written by

Kervin Mathew

Last Updated 31/03/2026

Our aim is to help you make better informed decisions. That’s why iSelect’s content is produced in accordance with our fact-checking and editorial guidelines.

Edited by

Andrew Kemp

Reviewed by

Adrian Bennett

Find out more about how we make money.

View our Privacy Policy.

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Long story short

1
A voided car insurance typically means the insurer treats it as if it never existed

Breaching your policy’s T&Cs may also cause your insurer to reject your claim or cancel your policy entirely.

2
Common breaches can include unpaid premiums, fraudulent claims, or non-disclosure

You need to disclose things like changes to where you park, how you use the car or who drives it.

3
Your safest bet is being honest with your insurer and knowing your PDS

Pay your premium on time, keep your insurer informed, and avoid surprises that could leave you uninsured.

What can void a car insurance policy?

Generally, a car insurance policy can be voided if its terms and conditions are breached – in other words, if you don’t keep up your end of the deal. This could include things like providing false information to your insurer, engaging in fraudulent activities, or using your car illegally. Here’s a bit more on what can void your car insurance policy.

Withholding or misrepresenting information

As a policyholder, you’re legally obliged to be honest about anything that could affect your car’s market value, how the policy covers you, and how your premium is calculated, including if:

  • you change your address or where you park your car
  • your car has existing damage before you buy your policy
  • your car is damaged during the policy term
  • you or someone else uses your car for ridesharing or deliveries
  • you modify your car.

Failing to provide this information to your insurer may lead to rejected claims, reduced payouts, or cancelled policies.

Driving under the influence

Driving under the influence of alcohol or drugs (including certain over the counter medicinal ones) is a safety risk. If you test positive for prohibited drugs or with a blood alcohol concentration (BAC) that’s over the legal limit while driving, any related car insurance claim you make could be rejected and your policy may be cancelled.

Driving an unroadworthy car

If your car is unsafe to drive it can increase your chances of having an accident. Generally, insurance providers place a lot of importance on the fact that they’re insuring a roadworthy vehicle. So, failing to keep your car roadworthy can impact the outcome of your claims. Look out for issues such as:

  • worn tyres
  • defective brakes
  • rust on the body or chassis
  • faulty seatbelts
  • broken indicators or headlights
  • windshield chips or cracks.

Dangerous driving or using your car illegally

Breaking traffic rules, reckless driving, Illegal car modifications or street racing, or using your car to commit crimes can severely impact your policy’s validity. There also may be other recognised illegal activities based on the location that can affect your coverage.

Allowing restricted or unlicensed drivers to drive your car

If you allow someone without a valid licence to drive your car, it can lead to your policy being voided. In the same vein, specifying someone underage on your policy to drive your car and allowing them to do it can impact any claim involving accidents caused by said driver.

Insurance fronting and other forms of fraud

Insurance fronting is a form of insurance fraud where someone falsely lists another person, like a more experienced driver, as a car’s main driver to pay a lower premium. So, when buying car insurance, you must tell your insurer who the primary driver is – that is, who drives your car the most. Providing false or misleading information at any stage, including when making a claim, may result in your claim being declined and your policy being cancelled.

While it’s not a serious breach, not paying your premium on time could lead to a cancelled policy. Your car insurance premium is what keeps your policy alive and kicking. If you don’t make your premium payment within, say, 14 days of its due date, your insurer could refuse your claim. If it’s been more than a month since you missed your premium payment your insurer may cancel your policy.

There are several other potential policy breaches that can void your car insurance. Make sure you check your product disclosure statement (PDS) carefully, as it usually lists the exclusions and conditions that state when your policy won’t cover you.

If you want more protection against unexpected repair costs, making sure you choose the right level of cover matters. And while it generally costs more, comprehensive car insurance offers wider coverage than any other type of policy. It’s the only type of car insurance that can cover repair costs for your car as well as any third-party property damage even if you’re found at fault. That’s maximum protection for your car and more peace of mind for you!

Adrian Bennett

General Manager for General Insurance

How do I prevent my car insurance from being voided?

You can keep your car insurance from being voided by keeping up with your premium payments, providing your insurer with accurate information, and making sure you’re up to speed on your PDS’ rules. These generally include stuff like not breaking traffic laws and keeping your car in a good driving condition.

Be honest with your insurer

Disclose all the necessary details about your car and situation to your insurance company. Where you park your car, what you use it for, who drives it, any modifications you’ve added or intend to add – they all matter and can save a whole heap or trouble (and money) further down the line. After all, honesty is the best (pun incoming) policy!

Read through your PDS

Grab a cuppa, find a comfortable spot, and ready yourself for some reading. Your policy’s PDS might not be the most riveting read, but it can at least be enlightening. Pay close attention to the exclusions, conditions of cover, and other sections that refer to refused claims or policy cancellations.

Be aware of your local laws

The legal blood alcohol concentration (BAC) limit can vary by licence type. For example, while drivers with a full licence can have a maximum BAC of 0.05, L- or P-plate drivers need to have a BAC of 0.00 in most Australian states and territories. You could check with your doctor about any medication side effects and how it might affect your driving. Also consider checking which car mods or aftermarket parts are illegal in your state or territory.

Keep your car roadworthy

Get your car serviced and checked regularly to identify any potential issues that could make it unroadworthy. For example, you’ll need to ensure that your car’s tyre tread depth is at least 1.5mm – the minimum limit required in Australia.

Pay your premiums on time

Set up a direct debit, ensure that your bank account has enough funds or your credit card is active, or set a calendar reminder if you prefer to pay your premium manually. And even if you miss a premium payment, try to pay it within at least a month of its original due date.

Frequently asked questions

Can my car insurance be voided after an accident?

Where can I find the product disclosure statement (PDS) for my policy?

What does a void car insurance policy mean?

Is there an easy way to compare multiple policies?

If you’re in the market for cheaper car insurance cover, there’s an easy way that beats hopping from one insurer’s website to another to manually compare their policies!

Use iSelect’s online comparison tool to compare policies and get car insurance quotes from a range of well-known car insurance brands in Australia, whether it’s a third-party or comprehensive policy you’re after. If you find the policy you want, you can sign up for cover in minutes!

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