There are more ways to pay for a car in Australia than most buyers realise, and the differences between them are not mainly about the interest rate. They are about who owns the car, whether the money is pre-tax or post-tax, what you owe at the end, and what happens if things go wrong.
Two questions sort almost every option: who owns the car, and is the money pre-tax or post-tax. A lease where you never own the car is not a bad deal by definition, and a purchase where you own it from day one is not automatically good. What matters is whether the structure matches how long you will keep the car and how you are taxed. Work out those two answers before you compare a single rate.
Paying cash
No interest, no fees, no contract, no one's permission required. You own the car outright, and if you need to sell in a hurry nothing stands in the way.
The cost is opportunity cost, plus concentration: money in a depreciating asset is not in an offset account or an emergency fund. And there is no consumer-credit protection to fall back on, because there is no credit — which matters less than it sounds, since the Australian Consumer Law guarantees apply to the car itself either way.
A car loan in your own name
A personal loan repaid over a fixed term, usually one to seven years. It comes in two shapes:
- Secured — the car is security. If you do not keep up repayments the lender can repossess and sell it. Rates are lower.
- Unsecured — the car is not security, so the lender cannot repossess it, but the rate is usually higher.
You own the car from the start. The lender's interest is registered on the Personal Property Securities Register, which is also how a later buyer finds out there is money owing. Our guide to car loans and dealer finance covers what these actually cost once fees are counted.
Dealer or manufacturer finance
The same product, arranged at the point of sale. Convenient, sometimes genuinely cheaper when a manufacturer is subsidising a rate to move stock, and sometimes considerably more expensive once the fees are added up.
The thing to understand is that the dealer is usually not the lender. There may be a lender, a broker and a dealer in the same transaction, each charging separately, and the finance contract has to disclose the broker fee. ASIC's 2026 review found loans typically carried two establishment fees, and in one case three.
A novated lease
Your employer pays the lease from your salary while you work there. The car is yours to choose and use, the tax treatment is what creates the saving, and fringe benefits tax is what caps it.
It suits an employee on a higher marginal rate whose employer offers packaging and who is reasonably settled in the job. It suits poorly anyone likely to change employers mid-term, because the novation ends with the employment. See novated leases explained.
A chattel mortgage
A business purchase. You own the car from the start and the lender registers a mortgage over it. Because it is a purchase rather than a supply of services, GST sits on the purchase price rather than on each payment — which has a real consequence above the car limit, covered in buying a car through your business.
Finance lease and operating lease
Both are business arrangements in which the financier owns the car and you pay to use it. The difference is who carries the risk on what it is worth at the end.
- Under a finance lease you carry it. There is a residual, and you are generally the one who has to deal with it.
- Under an operating lease the financier carries it. You hand the car back at the end of the term and walk away, within agreed kilometre and condition limits.
The ATO's own description of the distinction is that a finance lease has a residual with a practical opportunity to purchase, while an operating lease is simply a contract for the use of the car for a fixed term.
Consumer leases and rent-to-buy
Regulated consumer leases exist for cars as they do for appliances, and the arithmetic deserves care. Payments look small because they are weekly or fortnightly, and at the end of the term you do not own the item. ASIC's Moneysmart notes that repayments are capped at 10% of your after-tax income over the repayment period, that there is usually no cooling-off period, and that ending the lease early can cost an amount equal to all the remaining rental payments.
A rent-to-buy agreement is a different thing again: you do own the item at the end, after paying an agreed amount. Read which one you are being offered, because the words are used loosely.
Comparing them honestly
Interest rates are not comparable across these structures, because they are not all charging interest on the same thing. What is comparable is total cost of ownership over the period you will actually keep the car:
- Add up every payment you will make over the term.
- Add every fee — establishment, broker, monthly service, early exit.
- Add the balloon or residual you will owe at the end.
- Subtract what the car is realistically worth at that point, if you will own it.
Then compare that single number, and only then look at the rate. A lower monthly payment with a large residual routinely loses this comparison, which is the whole point of running it.
The costs that arrive whichever way you pay
Stamp duty, registration, compulsory third party insurance, a transfer fee and comprehensive insurance land on you regardless of the finance structure. Duty in particular is charged on the higher of the price and the market value, and it differs sharply between jurisdictions — see stamp duty on cars, state by state.
And whatever you sign, the checks on the car itself do not change: a PPSR search, an inspection and a look at the paperwork. Our guides to buying a used car and the used car inspection checklist cover that side.