If you plan to buy a car in the next year or so and you already salary sacrifice into super, or are thinking about starting, the same pre-tax dollars cannot do both jobs. Money sacrificed into super is taxed lightly but stays there for decades. Money taken as pay is taxed at your marginal rate but can go towards a deposit and cut the interest on your car loan.
This guide is for salaried employees with a clean credit history who are planning a car purchase. It sets out the 2026-27 rules from the Australian Taxation Office, works through one example both ways and ends with a checklist. All ATO and Moneysmart pages were checked on 10 November 2026.
How salary sacrifice super works in 2026-27
The ATO explains that salary sacrificing super has part of your pre-tax pay paid into your super fund instead of to you. The sacrificed amount is not counted as assessable income and is not subject to PAYG withholding. In the fund it is taxed as a concessional contribution at 15%, which the ATO notes is generally less than your marginal tax rate. It is on top of the super guarantee your employer must pay, and your employer must still pay the full super guarantee as though there were no sacrifice.
The limits for 2026-27:
- Concessional contributions cap: $32,500 from 1 July 2026, up from $30,000. It includes your employer's super guarantee as well as anything you sacrifice.
- Super guarantee: 12% for 1 July 2026 to 30 June 2027, now calculated on qualifying earnings for each payday.
- Division 293 tax: if your income plus concessional contributions is more than $250,000, an extra 15% applies to some or all of those contributions.
The trade-off is access. Moneysmart says you can generally only access super after your preservation age, which is between 55 and 60 depending on when you were born, and you must also meet a condition of release. Super cannot be used for a car deposit; our guide on whether you can use super to buy a car covers the limited exceptions.
Worked example: $6,000 into super or into a deposit
Our own calculation, using the ATO's 2026-27 resident tax rates. The assumptions are a taxable salary of $95,000, so the marginal rate is 30% plus the 2% Medicare levy, $500 a month of pre-tax pay for 12 months ($6,000 in total), no Division 293 tax, and a $45,000 car loan over five years at an illustrative 8.50% p.a. with monthly repayments and no fees. Investment earnings and any interest on savings are left out.
Option 1: salary sacrifice the $6,000 into super
- Tax in the fund at 15% is $900, so $5,100 is added to your super.
- Your concessional contributions for the year are about $11,400 in super guarantee (12% of $95,000, treating salary as qualifying earnings) plus $6,000, or $17,400, well under the $32,500 cap.
- Your car loan stays at $45,000: about $923.24 a month.
Option 2: take the $6,000 as pay and add it to the deposit
- Income tax and Medicare levy at 32% is $1,920, so $4,080 reaches your bank account.
- Putting that $4,080 towards the car reduces the loan to $40,920: about $839.54 a month, $83.71 less.
- Over five years you repay about $5,022 less, which is the $4,080 itself plus about $942 of interest saved.
What the example shows
The super route leaves $1,020 more in total ($5,100 against $4,080) because of the tax difference, but it is locked away until you can access super. The deposit route saves about $942 in loan interest over five years and lowers the repayment you need to budget for every month. At an illustrative 12% loan rate, the interest saved on the same $4,080 rises to about $1,365. The higher your car loan rate, the more the deposit route is worth. Neither option includes investment returns in super, which over decades can be substantial.
Questions that decide it for you
- Do you need the car within a year? If the purchase is close, cash you can actually use matters more than a tax saving you cannot touch.
- What rate will you actually pay? A quoted rate at the higher end of a lender's range makes each dollar of deposit worth more. Our guide to how much deposit to put down on a car loan covers the other side of that decision.
- Will you still have a cash buffer? Putting every spare dollar into the deposit leaves nothing for repairs or a change in income.
- Are you near the cap? The $32,500 cap includes the super guarantee. Higher earners and anyone already making large contributions should check before adding more. Our guide to catch-up super contributions and your car loan explains the carry-forward rules.
- Can you pause and restart? Salary sacrifice is an agreement with your employer. Ask how to change or pause it and when the change takes effect.
How a sacrifice shows up when you apply
Salary sacrifice reduces the take-home pay on your payslip. The ATO says the sacrificed amount is still included in your reportable super contributions on your tax return. If you apply for a car loan while a sacrifice is in place, ask the lender which pay figure it will use for its assessment, and have your payslips and income statement ready. Our guide to proving your income for a loan lists the documents lenders commonly ask for.
The bottom line
On our example, salary sacrificing $6,000 adds $5,100 to super, while taking it as pay puts $4,080 towards a car and saves about $942 of loan interest over five years. The tax saving is real but locked away; the deposit saving is smaller in total but available now. If a purchase is close, compare the two using your own marginal rate and your actual loan quote, and keep a buffer either way. When you are ready to compare finance, you can explore car loan options with us.
The rates and thresholds here are the ATO's and Moneysmart's published figures, checked on 10 November 2026. Our calculations are labelled and rely on the stated assumptions. This article is general information only and is not tax, superannuation or financial advice. Speak to a registered tax agent or licensed financial adviser about your situation.
