Salary Sacrifice Explained: How It Affects Your Gross Pay, Super, and Tax

What Is Salary Sacrifice?

Salary sacrifice is a common way to structure your pay in Australia. You agree with your employer to reduce your gross salary in exchange for a benefit of equal value. The benefit is provided before tax, so your taxable income drops. This is different from a salary deduction for something like a union fee, which comes out after tax.

Because the sacrificed amount is not counted as part of your gross pay for tax purposes, you pay less PAYG withholding. But the arrangement must not reduce your base rate below the minimum set by your award or the national minimum wage. As of 1 July 2026, the national minimum wage is $26.44 per hour, or $1,004.90 per week (index 48.2). Your base rate must stay at or above that floor.

How Salary Sacrifice Affects Your Gross Pay and the Salary Index

The Salary Index measures full-time adult ordinary-time earnings. For May 2026, the national line is $2,083.70 per week, annualised to $108,352 (index 100). Salary sacrifice does not change this benchmark because the index is based on gross earnings before any sacrifice. If your gross pay before sacrifice is $100,000, your index would be about 92.3. After sacrificing $10,000, your cash salary drops to $90,000, but the index figure remains based on the original $100,000. So salary sacrifice does not alter where you sit against the national line.

However, your take-home pay changes. Using the 2026–27 resident tax rates (nil up to $18,200, 15% to $45,000, 30% to $135,000, 37% to $190,000, 45% above) plus 2% Medicare levy, a $100,000 gross salary yields about $74,000 after tax. Sacrifice $10,000 into super, and your taxable income becomes $90,000, giving about $67,500 after tax. The $6,500 difference goes into your super account, not your pocket. Your net cash is lower, but your super balance grows.

Salary Sacrifice and Super Guarantee

The super guarantee is 12% from 1 July 2026, paid by your employer on your ordinary time earnings (OTE). OTE generally includes your base salary, commissions, and allowances, but not salary sacrificed super contributions. So if you sacrifice $10,000 into super, your employer calculates the 12% on the reduced OTE of $90,000, contributing $10,800. Without sacrifice, the employer would contribute $12,000 on $100,000. The difference is $1,200 less compulsory super, but your salary sacrifice adds $10,000, so your total super inflow is $20,800 instead of $12,000. That is a significant boost.

But be careful: if you sacrifice for a non-super benefit like a car, the sacrificed amount is still part of OTE for super guarantee purposes, so your employer must pay 12% on the full original salary. The benefit itself may attract fringe benefits tax, which your employer might pass on to you.

Tax Implications of Salary Sacrifice

Salary sacrifice reduces your taxable income, saving you the marginal tax rate plus Medicare levy. For someone earning $108,352 (index 100), the marginal rate is 30% up to $135,000. Sacrificing $10,000 saves $3,200 in tax and Medicare. If you are in the 37% bracket (above $135,000), the saving is $3,900. The tax saved can be directed into super or other benefits.

However, salary sacrifice into super is subject to the concessional contributions cap ($27,500 for 2026–27). Exceeding that cap incurs additional tax. Also, the super guarantee counts towards the cap, so you need to track total contributions.

Examples Across States and Industries

Your salary sacrifice strategy might depend on where you live and work. State indices vary: NSW is 101.2, VIC 98, WA 106.9, ACT 109.9. Higher-index states tend to have higher average earnings, so the tax benefit of salary sacrifice is larger if you are in a higher tax bracket. Industry also matters: Mining index 154.7, Retail trade 75.9. A retail worker on $50,000 (index 46.2) may have less room to sacrifice without dropping below the award floor. Always check your pay guides for minimum rates.

Practical Considerations

Before entering a salary sacrifice arrangement, check your award or enterprise agreement. Some awards limit what can be sacrificed or require the employer to agree. Salary sacrifice is voluntary for both parties. You cannot be forced into it. Also, sacrificing for a car or other goods may reduce your entitlement to certain government benefits like Family Tax Benefit, because those benefits are based on adjusted taxable income.

For most people, salary sacrifice into super is the simplest option. It reduces tax, boosts retirement savings, and avoids FBT. If you want to sacrifice for a car, a novated lease is common, but factor in FBT and running costs.

Summary

Salary sacrifice is a legitimate way to reduce your tax and increase your super, but it lowers your cash salary. It does not affect the salary index because that measures gross pay before sacrifice. Always ensure your base rate stays above the minimum, and watch the super cap. For more detail, see how the index works and explore topics related to pay and super.