This article provides general information only and does not constitute personal financial advice. It has been prepared without taking into account your objectives, financial situation or needs. Before acting on any information in this article, you should consider whether it is appropriate for you and seek advice from a licensed financial adviser if necessary.

Salary sacrifice into super is an arrangement where you ask your employer to pay part of your pre-tax salary directly into your superannuation fund instead of paying it to you as cash wages. The contribution goes in before income tax is deducted, reducing your taxable income and the amount of tax you pay. Inside the fund, the contribution is taxed at 15%, which is lower than most marginal tax rates. The strategy is a common way for Australian workers to boost retirement savings while reducing their current tax bill.

What Salary Sacrifice Means

Salary sacrifice (also called salary packaging or salary exchange) is a formal agreement with your employer. You agree to receive less take-home pay, and your employer redirects the difference into your super account as a concessional contribution. The arrangement must be set up before you earn the income. You cannot sacrifice income you have already received.

According to the ATO, salary sacrifice contributions are treated as employer contributions, even though you initiated the arrangement. They count toward your concessional contributions cap alongside the compulsory Superannuation Guarantee (SG) your employer already pays.

How It Works

Your employer deducts the agreed amount from your gross salary and pays it into your nominated super fund. Because the money never reaches you as salary, you do not pay income tax on it at your marginal rate. Instead, the super fund pays 15% contributions tax when it receives the money.

For example, if you earn a gross salary of $90,000 per year and arrange to salary sacrifice $10,000 into super:

  • Your taxable income drops to $80,000.
  • Your employer pays $10,000 directly to your super fund.
  • The super fund receives $8,500 after paying 15% contributions tax ($1,500).
  • You save the difference between your marginal tax rate and the 15% super tax.

If your marginal tax rate (including the Medicare levy) is 34.5%, you would have paid $3,450 in tax on that $10,000 if it had been paid as salary. By salary sacrificing, you pay only $1,500 in contributions tax, saving $1,950 in tax.

Tax Treatment and Caps

Salary sacrifice contributions are concessional contributions. As of September 2026, the concessional contributions cap is $30,000 per financial year (verify current caps at ato.gov.au, as these amounts are subject to indexation). This cap includes all concessional contributions: your employer’s SG payments, any salary sacrifice amounts, and any personal deductible contributions you claim.

If you exceed the cap, excess contributions are taxed at your marginal rate (minus a 15% tax offset), which removes the tax benefit. The ATO will issue an excess concessional contributions determination and give you the option to withdraw the excess or leave it in super.

Concessional contributions are taxed at 15% inside the super fund. High-income earners (those with income and concessional contributions exceeding $250,000 per year) pay an additional 15% Division 293 tax, bringing their effective rate to 30%. Even at 30%, this is lower than the top marginal rate of 47% (including Medicare levy).

Read also: How to Maximise Your Superannuation Contributions Before 30 June in Australia: Strategy Comparison

Why It Matters

Salary sacrifice works best when your marginal tax rate is higher than 15%. The larger the gap, the greater the tax saving. For someone on the 34.5% bracket, every dollar salary sacrificed saves 19.5 cents in tax. For someone on the 47% bracket, the saving is 32 cents per dollar.

The strategy also compounds over time. The tax savings remain in your super fund and benefit from investment returns, as outlined in foundational texts such as Principles of Finance. Over decades, this compounding can significantly increase your retirement balance compared to taking the income as salary and investing after-tax dollars.

Practical Considerations

Salary sacrifice reduces your take-home pay. Before setting up the arrangement, check that you can meet your living expenses on the lower net income. The money goes into your super fund and is preserved until you reach your preservation age (currently between 55 and 60, depending on your date of birth) or meet another condition of release.

You can start, stop, or adjust a salary sacrifice arrangement at any time by agreement with your employer. Many employers allow you to change the amount each pay period, while others require notice or limit changes to once per year. Check your workplace policy.

Not all employers offer salary sacrifice. Small employers and some industries may not have systems in place to manage it. If your employer does offer it, you will need to complete a salary sacrifice agreement form. The arrangement should be documented in writing before the income is earned.

Other Benefits

Salary sacrifice can help you reach retirement savings goals faster without feeling the full impact on your lifestyle. Because the contribution happens automatically each pay period, it builds discipline into your savings routine.

Some people use salary sacrifice to make up for years when they did not maximise super contributions. If you have a total super balance below $500,000, you may be able to carry forward unused concessional cap amounts from the previous five years, allowing you to contribute more than $30,000 in a single year. The ATO tracks your unused cap space, which you can view through myGov.

When It May Not Suit

Salary sacrifice is less effective if you earn below the tax-free threshold ($18,200 for the 2025-26 financial year) or if your marginal tax rate is already close to 15%. In those cases, you may be better off taking the income as salary and making non-concessional (after-tax) contributions if you want to boost your super.

If you have high-interest debt (such as credit card debt), paying down that debt may deliver a better effective return than the tax saving from salary sacrifice. Similarly, if you need the money in the short term (for a house deposit, for example), locking it in super may not align with your goals.

Salary sacrifice into super is a straightforward way to reduce tax and build retirement savings. The arrangement works by directing pre-tax income into your super fund, where it is taxed at 15% instead of your marginal rate. For most Australian workers on middle to high incomes, the tax saving is immediate and the long-term benefit is compounding growth inside a concessional tax environment. The strategy requires planning around cash flow and contribution caps, but when used correctly, it is one of the most tax-effective ways to prepare for retirement. Rates, caps, and tax thresholds are subject to change; verify current rules at ato.gov.au or consult a licensed financial adviser for personal advice.