Car Insurance: Agreed vs Market Value (Australia)
Compare agreed value vs market value car insurance Australia-wide: the extra premium, the extra cover and the cost per $1,000 of protection.

What it does
This calculator compares an agreed value and a market value car insurance quote, showing the extra premium agreed value costs, the extra cover it buys, and the price per $1,000 of that extra protection.
Data sources & parameters
This calculator uses standard financial formulas and runs entirely in your browser. It needs no external rate data — your result is computed only from the values you enter above.
We always strive to use the latest data for every variable so our results and reports are as accurate as possible. Even so, errors are possible — you should not rely on this tool or its report alone, and we accept no liability for any decision made based on it.
The formula
Extra premium = agreed premium − market premium; Extra cover = agreed value − market value; Cost per $1,000 = extra premium ÷ (extra cover ÷ 1,000)
How it works
It subtracts the market value quote from the agreed value quote for both the premium and the cover, then divides the extra premium by the extra cover to give a cost per $1,000.
Where it is used
- Deciding between agreed and market value cover
- Pricing the value of a guaranteed payout
- Comparing two insurer quotes fairly
Worked example
Agreed value cover costs … more per year and locks in … of extra payout, which works out to … for every $1,000 of additional cover.
What the agreed value vs market value car insurance australia tool does
The agreed value vs market value car insurance australia tool compares the two ways an Australian comprehensive policy can set the payout on your car. It takes the cover amount and the annual premium for each option, then shows three things: how much extra agreed value costs each year, how much extra cover that buys, and the price you pay for every A$1,000 of that additional protection. Those three numbers turn a vague "is agreed value worth it?" into a decision you can actually reason about.
Insurers rarely present the comparison this cleanly. The quotes arrive as two separate premiums with two different payout figures, and the value trade-off is left for you to work out. This calculator does that arithmetic in one step.
Agreed value versus market value
The two options answer the same question differently: how much will the insurer pay if your car is written off or stolen and never recovered.
- Agreed value fixes the payout when you buy the policy. You and the insurer settle on a figure, and that is what you receive for a total loss, regardless of what the market does over the year. It gives certainty and usually a higher payout, and it costs more.
- Market value leaves the payout open. The insurer pays what the car is judged to be worth at the moment of the claim, using guides and comparable sales. Because a car depreciates through the year, that figure is often lower than it was when you bought the policy, and it is cheaper as a result.
Neither is automatically better. Agreed value protects you against depreciation and disputes over what the car was worth; market value saves you money if you are comfortable accepting whatever the car is valued at when something goes wrong.
How the calculation works
The tool uses three simple steps:
- It subtracts the market value premium from the agreed value premium to find the extra premium agreed value costs each year.
- It subtracts the market value cover amount from the agreed value cover amount to find the extra cover agreed value guarantees.
- It divides the extra premium by the extra cover, expressed in thousands, to give a cost per A$1,000 of additional protection.
For example, if agreed value is quoted at A$1,200 with A$30,000 of cover and market value at A$1,000 with A$25,000, the extra premium is A$200, the extra cover is A$5,000, and the cost is A$40 for every A$1,000 of extra payout. That single figure is what makes different quotes comparable.
Why the cost per $1,000 matters
Comparing raw premiums is misleading because the two policies guarantee different amounts. A cheaper agreed value quote might guarantee much less cover, while a more expensive one might lock in a far higher payout. Reducing the difference to a cost per A$1,000 strips out the noise and shows the true price of certainty.
A low cost per A$1,000 means agreed value is buying you a lot of extra guaranteed payout for a modest premium, which usually makes it worth taking. A high figure means you are paying dearly for a small increase in cover, and market value may be the smarter choice, particularly for an older car whose value is already low and falling slowly.
What you need to enter
To compare fairly, gather these four figures from your quotes:
- The agreed value cover amount offered.
- The market value cover amount, or the insurer's current market estimate.
- The annual premium quoted for agreed value.
- The annual premium quoted for market value.
Use quotes for the same car, the same excess, and the same optional extras wherever possible. If the excess or inclusions differ, note that the comparison covers premium and payout only, and adjust your thinking for the other differences.
Reading your result
The output gives the extra premium, the extra cover, and the cost per A$1,000. Read them together. The extra premium is what leaves your pocket; the extra cover is what you gain; the cost per A$1,000 ties the two together into a value ratio you can compare against other quotes or against your own sense of how much certainty is worth to you.
For a new or high-value car, agreed value often wins because depreciation is steep and the guaranteed payout protects a large amount. For an older car worth only a few thousand dollars, the extra premium can be hard to justify, and market value frequently comes out ahead.
When to use this tool
Reach for this calculator when you want to:
- Decide between agreed and market value at renewal or on a new policy.
- Put a price on the certainty of a guaranteed payout.
- Compare quotes from two insurers on a like-for-like basis.
- Sanity-check whether the pricier option is genuinely better value.
Running the comparison each year is worthwhile because a car's value, and the gap between the two options, changes as it ages. What made sense when the car was new may not hold three years later.
This is general information only and not financial advice.
About This Tool: Agreed Value vs Market Value Car Insurance Australia
Agreed value vs market value car insurance australia: use this tool to get an instant estimate based on the figures you enter. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.
