Can I salary sacrifice into my super? How it works and what it means for your pay

What does 'can I salary sacrifice into my super' mean?

When someone asks "can I salary sacrifice into my super", they are really asking whether they can redirect part of their pre-tax salary straight into their superannuation account instead of receiving it as cash in hand. The short answer is yes, most employees can do this if their employer offers a salary sacrifice arrangement. But the longer answer involves understanding how it changes your gross pay, your tax bill, and your overall financial picture.

Salary sacrifice is a voluntary agreement. You choose to give up a portion of your future salary, and your employer pays that amount into your super as an employer contribution. Because the money never hits your bank account as income, it is not taxed at your marginal rate. Instead, it is taxed inside the super fund at 15%, up to the annual concessional contributions cap. This can be a tax-effective way to save for retirement, especially if you are on a higher marginal tax rate.

How salary sacrifice affects your gross pay and tax

Your gross pay is the amount you earn before any deductions. When you salary sacrifice into super, your gross pay for tax purposes is reduced by the sacrificed amount. For example, if your annual salary is $120,000 and you sacrifice $10,000, your assessable income becomes $110,000. You pay less income tax and Medicare levy on that lower figure. The $10,000 goes into your super and is taxed at 15% (plus possibly a 2% Medicare levy if your income is above certain thresholds, but inside super the levy is not applied the same way).

Let's use the Salary Index to see where this sits. The national line is 100, which equals $108,352 a year. A $120,000 salary has an index of about 110.8. That means you earn roughly 10.8% above the average full-time adult ordinary-time earner. Your marginal tax rate for 2026–27 is 30% (on income between $45,001 and $135,000) plus a 2% Medicare levy, so your combined marginal rate is 32%. By salary sacrificing $10,000, you save 32% of that amount in tax – that is $3,200. The super fund pays 15% tax on the contribution, so the net tax saving is 17% of $10,000, or $1,700. Plus, the money grows inside super, which is also taxed concessionally.

Now consider someone on the national minimum wage, which is $52,255 a year (index 48.2). Their marginal rate is 15% on income between $18,201 and $45,000, and 30% on the portion above $45,000. For a $10,000 sacrifice, the tax saving is smaller because part of that sacrifice would have been taxed at only 15%. Salary sacrifice still works, but the benefit is less dramatic.

Using the Salary Index to see where you stand

The how the index works page explains that the index is your yearly gross pay divided by the national line ($108,352) times 100. If your index is above 100, you earn more than the average full-time worker. If it is below, you earn less. This helps you decide whether salary sacrifice is worth it. Generally, the higher your index, the more you save in tax by sacrificing into super.

State indices also matter. For example, the ACT has an index of 109.9, meaning the typical full-time worker there earns about $119,090. In Tasmania, the index is 88.6 ($96,008). A Tasmanian worker on the state average might have a marginal rate of 30% on part of their income, but the benefit of salary sacrifice is still real. You can check states for more details.

Industry matters too. If you work in mining (index 154.7), your pay is well above the national line, and salary sacrifice is very tax-effective. In retail trade (index 75.9) or accommodation and food services (index 72.5), pay is lower, so the tax saving is smaller, but salary sacrifice can still help build super over time.

Things to watch out for

Salary sacrifice is not automatic. You need to ask your employer if they offer it. Some employers have a standard form; others may require a formal agreement. Also, salary sacrifice contributions count towards the annual concessional contributions cap. If you exceed the cap, the excess is taxed at your marginal rate, which defeats the purpose. The ATO sets the cap each year; check their website or your myGov account.

Another point: salary sacrifice reduces your take-home pay. If you are living pay cheque to pay cheque, sacrificing even a small amount might cause cash flow problems. On the other hand, it forces you to save for retirement. Also, salary sacrifice can affect your eligibility for some government benefits or the Medicare levy surcharge, because it lowers your income for means tests.

Finally, remember that the super guarantee (12% from 1 July 2026) is calculated on your ordinary time earnings before salary sacrifice. Your employer must still pay the compulsory 12% on your full salary, not the reduced amount. Salary sacrifice is on top of that. For more on pay structures, see pay guides or topics.

The bottom line

Yes, you can salary sacrifice into your super, provided your employer agrees and you stay within the concessional cap. It reduces your taxable income, saves you tax, and boosts your retirement savings. Use the Salary Index to see where your pay sits relative to the national line, and talk to your employer or a financial adviser to set up an arrangement that suits your situation.