What is third party car insurance?

Claudia AinsleyWritten byClaudia Ainsley
Reviewed byMatt Leeburn
Updated 26 Aug 2026

Third party car insurance is motor cover for damage you cause to other people's vehicles and property, with no cover for your own car beyond a fire and theft add-on.

Also known as: third party property damage, third party fire and theft, TPPD

Key points

  • Third party property damage is the basic level: it pays the other driver when you are at fault, and nothing toward your car.
  • Third party fire and theft adds limited cover for your own vehicle if it is stolen or burnt out.
  • Compulsory third party differs: injury cover needed to register a vehicle, included with rego in most states, a green slip in New South Wales.
  • Many policies include a capped amount for damage caused by an uninsured driver, set out in the product disclosure statement.
  • A lender financing a car loan will usually require comprehensive cover instead, because the vehicle is its security.

What third party car insurance covers

Third party, CTP and comprehensive

Example

Not to be confused with

Write-off
a third party policy will not pay to replace your own written off car
Car loan
a car loan is the finance; lenders often will not accept third party cover on it

Frequently asked questions

What does third party car insurance cover?

Damage you cause to other people's vehicles and property when you are at fault, including repair costs and their associated expenses. It does not pay for your own car. A fire and theft version adds limited cover for your vehicle if it is stolen or burnt out.

Is third party insurance enough?

It depends on whether you could replace your own car tomorrow. Third party protects you from the biggest risk, which is a repair bill on someone else's expensive vehicle. What it leaves exposed is your own car, so it suits older vehicles more than newer or financed ones.

What is the difference between CTP and third party property insurance?

CTP is compulsory and covers injury to people hurt in a crash. It is included with registration in most states and bought as a green slip in New South Wales. Third party property damage is optional and covers damage to other people's cars and property. Neither repairs your own vehicle.

Does third party insurance cover my car?

No, not for collision damage. Basic third party property damage pays only for what you damage belonging to someone else. Third party fire and theft adds a payout if your car is stolen or destroyed by fire. For your own crash damage you need comprehensive cover.

Is third party car insurance cheaper than comprehensive?

Generally yes, because the insurer carries less risk. The gap can be smaller than people expect for some drivers and vehicles, so it is worth quoting both before deciding. Weigh the premium difference against what you would lose if your own car was written off.

Broader term: Insurance

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Sources

This article is general information only and is not financial advice.