Learn how 0% interest car loans work, check eligibility, and understand key finance terms. Make an informed choice before driving away!
Zero interest car finance gets a lot of attention, and for good reason. Not paying interest sounds hard to beat. This guide explains how these deals work in Australia, where the costs can hide, and what to look at before you sign anything. It’s general information only, not financial advice.
It’s car finance at 0%. You pay back what you borrowed and nothing extra for interest. Manufacturers offer it through their dealers, usually on particular new or demo models, and only for a limited time.
Sometimes it really is the cheapest way to buy. Other times the saving gets swallowed by a higher sticker price, extra fees, a short term with big repayments or a balloon at the end, so a comparison is worth the effort.
Here’s the basic idea. Borrow $36,000 over 36 months at 0% and you pay $1,000 a month, plus any fees. A normal car loan adds interest each month, which means part of every repayment goes to interest and only the remainder reduces what you owe.
One thing people miss is how long the 0% lasts. Some deals keep it for the full term. Others drop to a standard rate after a year or two, and that rate applies to whatever you still owe.
The lender is usually the car brand’s own finance company, and it pays for the lost interest out of its marketing budget. Cheap finance sells cars. Banks and brokers don’t normally do 0% because nobody subsidises them.
The timing isn’t random either. Offers tend to pop up around the end of the financial year when sales targets are due, or when a new model is about to land and the old stock needs to move.
The interest cost doesn’t actually disappear, though. It tends to turn up somewhere else in the deal:
You sort it out at the dealership. The loan comes from the manufacturer’s finance arm, or a lender the dealer works with, and it only covers the models and stock named in the promotion.
Most offers have conditions attached:
The amount you borrow is the drive-away price minus your deposit and trade-in. Dealers usually have less wiggle room on a promotional car, so getting 0% and a big discount together doesn’t happen often.
Lenders can be stricter with promotional finance than with a regular car loan, so approval isn’t guaranteed. Typically you’d need:
If you’re self-employed, expect to be asked for tax returns or BAS statements. Some offers want a deposit too.
Seeing a 0% ad doesn’t mean you’re approved. The lender still has to check you can afford the loan. If you don’t pass, the dealer may put a standard rate in front of you instead, and that’s a sensible time to compare it with pre-approved offers from banks and other lenders.
Here’s how the two stack up.
| Feature | 0% Car Finance | Low-rate Car Loan |
|---|---|---|
|
Who offers it |
Manufacturer finance arm, via dealer |
Banks and other lenders |
|
Eligible cars |
Selected new or demo models |
New and used cars |
|
Price negotiation |
Often limited |
Full, as a pre-approved buyer |
|
Typical term |
3 to 4 years |
1 to 7 years |
|
Repayments |
Higher, due to the short term |
Lower over a longer term |
|
Balloon payment |
Common |
Optional |
Not always. Say the car is $42,000. Here are three ways to buy it over 36 months.
| Feature | A: 0% at full price | B: $5,000 off + 7% loan | C: 0% with 30% balloon |
|---|---|---|---|
|
Amount financed |
$42,000 |
$37,000 |
$42,000 |
|
Monthly repayment |
$1,166.67 |
$1,142.45 |
$816.67 |
|
Final lump sum |
None |
None |
$12,600 |
|
Total paid |
$42,000 |
$41,128 |
$42,000 |
Option B ends up about $870 cheaper than the 0% deal, even after paying interest. Option C has the lowest repayment, but you still owe $12,600 at the end, and if you refinance that you’ll be paying interest on it.
A rough break-even guide:
At some point, giving up a discount to get 0% stops making sense. With a 7% loan, the standard option usually wins when the discount you’d lose is bigger than roughly this share of the car’s price:
It climbs with the term because a longer loan collects more interest.
Take $40,000 at 0% over 48 months. That’s about $833 a month, and you pay $40,000 in total. Put the same $40,000 on a 7% loan over 60 months and the repayment drops to about $792, which looks like the better deal.
Then you add it up. The total comes to around $47,500, so roughly $7,500 goes to interest. The terms are different, which is exactly why the monthly number alone doesn’t tell you much.
The examples above leave fees out so the effect of interest is easy to see. In practice they matter. Give Option A a $500 establishment fee and a $10 monthly account fee over 36 months, and the total jumps to $42,860. The “free” loan now costs $860.
In June 2026, ASIC published a review of more than 350,000 car loans from eight lenders (Report 832). It found establishment fees as high as $9,000 on a loan of about $49,000. The review covered car loans in general rather than 0% offers specifically, but it shows how much fees can matter.
If you want to test your own numbers, a car loan calculator does the job quickly.
A 0% deal can work well when the price is fair. Most of the downsides come from the conditions attached to it.
For a lot of buyers, a low-rate secured car loan with pre-approval works out better. With the finance already sorted, you walk in like a cash buyer and can haggle on the price. Some dealers will also take a discount off the car instead of the 0% deal, though most won’t give you both.
A few other routes are worth a look:
A 0% credit card is one idea that rarely works. The intro period runs out, and the rate after it is usually high.
Here are the frequently asked questions about zero interest car loans, so you know what to check before you sign.
Yes. No Interest Loans (NILs) for Vehicles let you borrow up to $5,000 at 0% interest over up to 48 months. You may qualify if your income is under $70,000 (single) or $100,000 (with a partner or children), or if you hold a Health Care Card or Pension Card. You’ll still need to show you can afford the repayments.
Get these in writing: the cash price, the total amount payable including fees, whether a balloon applies, whether the rate changes later, your trade-in value with and without the finance, and any early payout fee.
Yes. Lenders count your repayments, not just the rate. A 0% loan over 3 or 4 years often has a high monthly repayment, which can reduce how much a home loan lender will let you borrow.
You can pay it in cash, refinance it, or sell or trade in the car. Refinancing means paying interest and a new credit assessment. If the car is worth less than the balloon, you cover the gap.
The loan has to be paid out first. If the sale price is lower than the balance, you owe the difference. Ask your lender for a payout figure and check for early termination fees.
Possibly, with extra checks. Casual workers are often asked for 6 to 12 months in the same job, and self-employed applicants usually need recent tax returns or BAS statements and an active ABN. See our car loans for casual workers page for more.
Many lenders require comprehensive insurance while the loan is active. Check your contract, and include the premium in your budget.
It depends on the offer. Rolling fees and extras into the loan increases the amount financed, so the deal may no longer be truly free. Check the total amount payable and the comparison rate before you agree.
Explore how zero-interest car finance works, compare the potential costs and see whether a 0% offer could save you money.
