Car insurance for Australian homeowners: common questions
Do I need to update my car insurance when I move house in Australia?
Yes, within 14 to 30 days of moving in most insurer policy terms. Your address is one of the top three pricing inputs for car insurance, and failing to update it is a non-disclosure that can reduce or void a future claim. Set the effective date on the address change to your settlement / move-in day so cover is continuous on the new postcode.
How much does moving house change my car insurance premium?
Typical range is 10 to 30% in either direction. Moving to a higher-theft postcode, a more accident-prone arterial-road suburb, or to kerbside parking from off-street parking can lift the premium 15 to 30%. Moving the other way (to a quieter suburb, off-street parking, lower-density area) often drops the premium 10 to 25%. The only way to know your exact number is to re-quote on the new postcode.
What is the difference between CTP, third party property and comprehensive car insurance?
CTP (Compulsory Third Party / Green Slip in NSW) is mandatory by law and covers personal injury you cause to other people: it does NOT cover any vehicle damage. Third party property is optional cover for damage you cause to other people's vehicles and property: it does NOT cover your own car. Comprehensive covers damage to your car AND damage you cause to others, plus theft, weather and vandalism. Most homeowners with a financed or under-10-year-old car choose comprehensive.
Do I need new CTP if I move interstate?
Yes. CTP is regulated state-by-state in Australia. Each state runs its own scheme with different insurers and pricing rules. Moving NSW to QLD, VIC to SA, or any interstate move requires re-registering your vehicle at the destination state's transport authority (Service NSW, VicRoads, TMR Queensland, etc.). You choose your CTP insurer in NSW (Green Slip), QLD, SA and ACT; VIC, TAS, WA and NT use a single scheme included with registration. The destination state's transport authority handles the transition.
Does my car insurance follow my old postcode if I forget to update?
Yes, until your renewal date. Insurers re-price annually based on the address you give them, so if you don't update, you'll keep paying the old-postcode premium until renewal automatically pulls in current data. The risk is that any claim during that period can be reduced or voided for non-disclosure of the actual address. Always update within 14 to 30 days of moving.
Will my no-claim bonus transfer if I switch insurers?
Formal no-claim bonus tiers have largely disappeared from Australian car insurance. Most insurers now price your claims and insurance history directly into the premium, so a claim-free record still lowers your quote. Answer the claims-history questions accurately when you compare, and if an insurer asks for proof, request a Letter of Experience or Claims History Letter from your current insurer, free and usually issued within 24 to 48 hours.
Why is comprehensive car insurance required by my lender?
When you finance a car with a secured loan, the lender takes the vehicle as security against the debt. If the car is damaged or destroyed, the lender needs the insurance payout to cover the outstanding loan balance: that's why they require comprehensive cover (not just third party) and require their financial interest to be noted on the policy. This continues for the life of the loan and is checked at each renewal.
How much does car insurance cost per year in Australia?
Wide range. Comprehensive cover for a 35-year-old driver with a 5+ year claim-free history on a 5-year-old mid-size sedan in a low-risk suburb typically costs $800 to $1,400 per year. Younger drivers under 25 can pay 2x to 4x that. Higher-risk vehicles (utes, performance cars), higher-risk postcodes (kerbside parking, high-theft suburbs), and additional drivers all lift the premium. The same cover can vary significantly between insurers: comparison saves real money.
How much can I save by increasing my excess?
Roughly 12 to 18% premium saving by lifting the basic excess from $750 to $1,500. Beyond $1,500 the marginal saving per excess dollar diminishes. The rule of thumb: pick the highest excess you could comfortably pay in one hit. Don't take a $2,000 excess just to save $200 a year if you'd struggle to find $2,000 cash for a claim.
What is a young driver excess and when does it apply?
Most insurers add a young driver excess (often $400 to $1,200) for any claim involving a driver under 25. Some also add an inexperienced driver excess (often $400 to $800) for drivers with less than 2 years of full-licence experience. Both apply on top of the basic excess. If you have a teen driver in the household, this can lift the effective per-claim cost meaningfully: factor it into the comparison.
Can I bundle car insurance with home and contents for a discount?
Yes, many Australian insurers offer a multi-policy discount of typically 5 to 15% off each policy when you bundle two or more on a single account. Compare the bundled price against standalone quotes so you can see the apples-to-apples math. Sometimes the discount unlocks a better total cost; sometimes it doesn't: comparison is the only way to know.
What is agreed value vs market value cover?
Agreed value sets a specific sum-insured at policy start: you and the insurer agree on what the car is worth, locked in for the term. Market value is calculated at claim time based on what a similar vehicle is selling for in the AU used market that month. Agreed value usually costs 10 to 20% more in premium but gives you certainty on the payout. Market value is cheaper but can disappoint after rapid market shifts (early 2022 to 2023 saw used-car prices spike then crash).
What does my car insurance cover for hire car or rental car use?
Standard Australian comprehensive policies generally cover you in any car you have legal possession of, including hire cars and rentals, but at the basic third party level only, not comprehensive damage on the rental vehicle itself. Rental companies sell their own excess-reduction cover for the rental, which is separate. Always check your PDS before declining the rental company cover, and consider whether a credit card with rental insurance benefit applies.
How do I cancel my old car insurance policy after switching?
Call the old insurer or use their online cancellation form. You'll get a pro-rata refund of any premium paid for the unused portion of the policy. Time the cancellation date to start the day AFTER the new policy starts to avoid any gap in cover. If your car is financed, tell the lender about the switch and forward the new certificate of currency with their interest noted.
How often should I re-shop my car insurance?
Annually. Australian insurer pricing is competitive and renewal premiums creep up 5 to 15% per year even with no claims: loyalty costs money. Setting a calendar reminder for 4 weeks before renewal to get 3 fresh comparison quotes is the simplest way to keep your premium honest. Comparing via Compare the Market takes only a few minutes with details you already have on hand.
What is roadside assistance and is it worth bundling with car insurance?
Roadside assistance covers things like flat batteries, lockouts, fuel delivery and tows when your car breaks down. Insurers typically offer it as an add-on for $80 to $150 per year, often slightly cheaper than buying it separately from RACV, NRMA or RAC. Whether to bundle depends on whether your state-based motoring body (RACV, NRMA, RAC, RACQ, RAA) already gives you cheaper or better roadside as a membership benefit. Compare the bundled price to the standalone motoring-body membership before deciding.
