Salary sacrifice can help you put more of your income towards retirement while potentially reducing the income tax you pay today. In theory, that’s as simple as asking your employer to send more money to super. In practice, there’s paperwork, a cap to track and a chunk of your pay packet you won’t see again until retirement says so. You need to understand how contributions affect your concessional cap, whether your employer can offer the arrangement and how much money you can afford to lock away.
Here’s how salary sacrifice in Australia works, what to check before you start and who may benefit most.
What is salary sacrifice?
Salary sacrifice is an arrangement where you agree with your employer to give up part of your future salary or wages in return for a benefit. When you salary sacrifice into super, your employer pays the agreed amount into your super fund as an employer contribution.
The arrangement generally needs to be agreed before you earn the salary being sacrificed. It should be documented, and your employer needs to agree to it. You can’t retro-actively sacrifice salary you’ve already earned; the tax office is many things, but not a time machine.
Salary sacrifice is different from your employer’s compulsory super guarantee (SG). From 1 July 2026, the general SG rate is 12%. Your employer must meet their SG obligations separately; salary sacrifice should not be used to reduce the SG they owe you. However, both SG and salary-sacrifice contributions count towards your concessional contributions cap (currently, as of FY2026-2027 $32,500).
How can salary sacrifice reduce your taxable income?
When salary sacrifice is set up effectively, the agreed amount is generally paid into super before it is included in your taxable salary. This can reduce your taxable income. The contribution is usually taxed in your super fund at 15%, rather than being taxed as salary at your marginal income tax rate.
Here’s the logic with numbers: if your marginal tax rate is 37% (plus 2% Medicare levy), every dollar you send to super instead of your payslip saves roughly 24 cents in tax, because it’s taxed at 15% in the fund rather than 39% as salary. Small percentage, real money. But the potential benefit depends on your circumstances. Your income, tax offsets, contribution limits and other rules can all affect the outcome. Some higher-income earners may also be liable for additional tax on concessional contributions, which can eat into that saving.
There are trade-offs. You generally can’t access money in super until you meet a condition of release, such as reaching preservation age and retiring under the relevant rules. Money you salary sacrifice is effectively locked in a safe you can’t open until the rules allow it, so don’t put the rent money in there. Salary sacrifice may also affect income tests used for some government benefits, surcharges or other purposes because reportable employer super contributions can be counted in certain calculations.
Before you decide, compare the possible tax benefit with the loss of take-home pay and your need for accessible savings.
The concessional contributions cap
The concessional contributions cap is the annual limit for super contributions that generally receive concessional tax treatment. For the 2026–27 financial year, the general cap is $32,500.
It includes all of your:
- Employer SG contributions
- Salary-sacrifice contributions
- Personal contributions for which you claim a tax deduction
The cap applies across all your super funds. So, if you have more than one account, include contributions to each one.
For example, suppose your qualifying salary is $100,000 and your employer pays $12,000 in SG at 12%. If you also salary sacrifice $10,000, your concessional contributions would total $22,000. That leaves $10,500 under the general cap for the year, before accounting for any other concessional contributions or eligible carry-forward amounts. Blow past the cap and the extra amounts are generally taxed at your marginal rate, plus an excess contributions charge, which turns the clever tax strategy into an expensive maths error.
Check your figures throughout the year. Employer contributions may not line up exactly with your pay cycle, and contributions are generally counted in the financial year they reach your super fund. If you have two super funds, both count, and the cap doesn’t care which one the money went to. You can check your contribution information and available carry-forward amounts through ATO online services.
Note: If you have a GESB West State account, an untaxed fund or a closed plan, recheck your rules as they may apply differently.
Salary sacrifice or personal deductible contributions?
Both options can put money into super as a concessional contribution, but the process is different.
With salary sacrifice, your employer pays the contribution from your pre-tax salary under an agreed arrangement. You generally don’t claim a personal tax deduction for it. Your employer needs to agree, and you should check how the arrangement affects your pay and SG calculations.
With a personal deductible contribution, you make a contribution to your fund yourself, usually from money you have already received. If you’re eligible, you can give your fund a notice of intent to claim a tax deduction and wait for the fund to acknowledge it before claiming the deduction in your tax return. The contribution still counts towards your concessional cap.
A personal contribution can offer more control over when you contribute, but it has specific notice and timing requirements. Salary sacrifice can make regular contributions easier, but depends on your employer’s payroll process. Read the ATO guidance on personal super contributions and check which approach fits your circumstances.
What can and can’t you salary sacrifice?
Salary packaging arrangements can cover different benefits, depending on your employer and the rules that apply. Common examples can include super contributions, a car or certain work-related benefits. The tax treatment varies. Some benefits may have fringe benefits tax (FBT) implications, while salary-sacrificed contributions to a complying super fund are generally treated differently from other fringe benefits.
You can’t simply re-label money you’ve already earned as a salary-sacrifice contribution, no matter what the person at the BBQ says. Nor should salary sacrifice replace your employer’s SG obligations. Ask your payroll team what benefits are available, how the arrangement will be documented, what fees or FBT may apply and whether your take-home pay or other employment entitlements could be affected.
How the carry-forward rule works
If you haven’t used your full concessional cap in an earlier year, you may be able to carry forward unused amounts from up to five previous financial years.
For 2026–27, you generally need a total super balance below $500,000 at 30 June 2026 to use eligible carry-forward amounts. The oldest available amounts are used first, and each unused amount expires after five years. Your employer SG, salary sacrifice and any personal deductible contributions all count towards your available cap.
Carry-forward amounts can be useful if your income has increased, you receive a bonus or you return to work after time away. Say you took two years off travelling and barely contributed: those unused cap amounts may still be sitting there, waiting like an unopened birthday present. They may give you extra room to contribute in a year when your cash flow allows, such as the year a decent bonus lands. Check the amount recorded in ATO online services rather than estimating it yourself, and read the ATO’s guidance on concessional contributions caps.
Who may benefit most?
Salary sacrifice may suit you if you:
- Have regular surplus cash flow and can manage a lower take-home pay.
- Want to build your retirement savings over time.
- Pay tax at a rate where concessional contributions may be beneficial.
- Have checked your employer contributions and available cap space.
- Can afford to leave the money in super until you meet a condition of release.
It may be less suitable if you need that money for near-term expenses, have high-interest debt, lack an emergency fund or are close to exceeding your cap. Locking money away in super while paying 19% interest on a credit card is a bit like buying a discount for a store you’re banned from. Lower-income earners may also find the tax comparison less straightforward, so it’s worth checking the full picture rather than assuming salary sacrifice will always save tax.
Make your next step practical
Start by checking your latest payslip and super account. Estimate your SG contributions for the year, add any salary sacrifice or personal deductible contributions, then compare the total with your cap. If you’re considering regular contributions, ask payroll how to set up the arrangement and confirm when payments reach your fund.
You can also use Advice360’s Grow Your Super calculator to explore how different contribution amounts and time frames could affect an estimated balance. It’s a useful starting point, not a prediction or personal recommendation. For more ideas on reviewing contributions, fees and investment choices, read our guide to superannuation growth strategies.
Advice360’s Wealth Strategy & Accumulation service can help you consider super alongside your cash flow, investments and wider financial goals.
We're more than happy to have a complimentary chat about salary sacrifice. Just reach out to our team and we'll find a time that suits you.
Important information: This article contains general information only and does not take your objectives, financial situation or needs into account. It is not personal financial or tax advice. Salary sacrifice requires employer agreement, and tax outcomes depend on individual circumstances. Super rules and caps can change. Confirm your contribution limits and potential tax outcomes with a qualified professional before making a decision.
