A novated lease calculator estimates what a salary-packaged car actually costs you, by working out your repayments from pre-tax income and showing the take-home difference against paying with after-tax cash or a normal car loan. In plain terms, it bundles the lease, running costs and tax into one figure so you can see whether the arrangement leaves you better off. The catch is that every result rests on assumptions, so the number it spits out is a starting point, not gospel.
What a novated lease calculator is actually doing
A novated lease is a three-way agreement between you, your employer and a finance provider. Your employer pays the lease and running costs from your salary before tax is taken out, which lowers your taxable income. The calculator’s job is to translate that arrangement into dollars you can compare.
To do that, it pulls together several moving parts:
- The lease payment, based on the car’s price and the lease term, usually one to five years.
- Running costs that get packaged in, such as fuel or charging, insurance, registration, servicing and tyres.
- Your marginal tax rate, which determines how much tax you avoid by paying from pre-tax income.
- GST savings, since you generally do not pay GST on the car purchase price or on packaged running costs.
- The residual, or balloon, value owed at the end of the lease, set using ATO minimum percentages tied to the lease term.
Change any one of those inputs and the headline saving moves. That is why two calculators can hand you different answers for the same car: they are quietly making different assumptions about how far you drive and what it costs to keep the thing on the road.
Where the real savings come from
The biggest lever, by a wide margin, is the FBT exemption on eligible electric vehicles. Since the exemption arrived, an eligible EV priced under the luxury car tax threshold for fuel-efficient vehicles can be packaged without fringe benefits tax applying, which removes the cost that used to claw back a chunk of the benefit. That is why calculator results for EVs often look dramatically better than for a petrol equivalent.
For a petrol or diesel car, savings still exist, but they are more modest. They come mainly from the GST you avoid and the slice of running costs you pay before tax rather than after. The Employee Contribution Method is often used to manage the FBT on non-exempt cars, which adds another wrinkle the calculator handles behind the scenes.
A quick word of caution on the EV side. The FBT exemption has eligibility rules and a price threshold that is reviewed over time, and there has been ongoing policy discussion about plug-in hybrids specifically. Details change, so treat any calculator’s EV result as indicative and confirm the current rules with the Australian Taxation Office before you commit.
Reading the numbers without fooling yourself
A calculator is only as honest as the assumptions you feed it. The two that trip people up most are annual kilometres and running costs. Lowball your fuel or charging bill and the packaged saving looks bigger than it will be. Overstate your kilometres and you may end up over-contributing to a running-cost budget you never spend, with reconciliation sorting it out later.
The residual is the other figure worth staring at. At the end of the lease you owe that balloon amount, and you have to do something about it: pay it out, refinance it, or roll into a new lease. The calculator shows you a tidy monthly number, but it rarely shouts about the lump sum waiting at the finish line.
A novated lease calculator answers one question well: what does this cost me each pay. It is quieter about the balloon you owe at the end.
It also helps to know what is not included. Excess kilometres, early termination fees and end-of-lease charges sit outside the neat monthly figure, and they can reshape the maths if your circumstances change. Always compare the all-in cost over the full term, not just the weekly headline.
Novated lease versus a loan or cash
The honest way to use a calculator is to run your own numbers three ways and line them up: a novated lease, a regular car loan, and paying cash. The right answer depends on your marginal tax rate, the car you choose and how long you keep it. A higher earner packaging an eligible EV tends to see the strongest case; someone on a lower tax rate buying a cheap used petrol car may find a plain loan or cash works out simpler and not much dearer.
| Option | Where it tends to win | What to watch |
|---|---|---|
| Novated lease | Higher tax rate, eligible EV, new car | Residual owed at lease end, packaging fees |
| Car loan | Used cars, lower tax rate, flexibility | Interest paid from after-tax income |
| Cash | No debt, simplest exit | Opportunity cost of the lump sum |
If a straightforward loan looks like the better fit once you have run the figures, it is worth seeing what is actually on offer before you decide. You can compare car finance options to get a feel for rates and terms, then weigh that against the packaged result. For a deeper walk through how the arrangement works end to end, our guide to a novated lease in Australia goes further than a calculator can, and if you are leaning toward borrowing instead, our overview of personal loans in Australia covers the trade-offs.
A few sensible checks before you sign
Run the calculator more than once. Try a realistic kilometre figure and a conservative one. Try the car you want and the cheaper one you could live with. Ask the provider for a full quote in writing, including all fees, the residual, and what happens if you leave your employer mid-lease, since the lease travels with you but the arrangement does not run itself.
It is also worth remembering that a car is one line in a bigger budget. If you are juggling a mortgage at the same time, the cash flow effect of a novated lease deserves a look alongside your other commitments, and our home loans guide is a useful companion when you are mapping out the whole picture.
This is general information only and not personal financial, tax or legal advice. Figures and FBT rules quoted here were last checked June 2026 and can change; your own result depends on your income, the car and your employer’s arrangement, so confirm the details with a licensed adviser and your lease provider before acting.
The bottom line
A novated lease calculator is a genuinely useful tool for seeing whether salary-packaging a car stacks up for you, and for eligible EVs the savings can be substantial thanks to the FBT exemption. Just treat the output as an estimate built on assumptions you control. Run your own numbers, factor in the residual, compare it honestly against a loan or cash, and confirm everything with the provider before you sign. The calculator points you in the right direction. It does not sign the paperwork for you.