What Is a Salary Sacrifice Form and How Does It Affect Your Pay?

What Is a Salary Sacrifice Form?

A salary sacrifice form is a written agreement between you and your employer to swap part of your pre-tax salary for a benefit of equivalent value. In Australia, this is a common way to pay for things like a car, laptop, or extra super contributions using before-tax dollars. The form records the details: the benefit, the amount sacrificed, and how long the arrangement lasts.

Because the sacrificed amount comes out of your gross pay before tax, your taxable income drops. But your gross ordinary-time earnings—the figure used to calculate your position on the Salary Index—stay the same. The index is based on what you earn before any deductions, including salary sacrifice.

How the Salary Index Works with Salary Sacrifice

The Salary Index compares your annual gross pay to the national line of $108,352 (index 100). That line comes from the ABS Average Weekly Earnings for full-time adult ordinary-time workers. If you earn $120,000 gross, your index is about 110.7. If you then sacrifice $15,000 for a car, your taxable income falls to $105,000, but your index remains 110.7 because the sacrifice is a post-earnings arrangement.

This is an important distinction. The index measures your earning power, not your take-home amount. So a salary sacrifice form doesn't move your position on the index. It only changes how much tax you pay and what benefits you receive.

Examples of Salary Sacrifice in Australian Workplaces

Consider a retail worker earning $80,000 a year. That's an index of about 73.8, below the national line. If they use a salary sacrifice form to salary sacrifice a laptop worth $3,000, their taxable income drops to $77,000. Their index stays at 73.8. The benefit is they pay less tax on that $3,000.

A nurse on an award earning $95,000 (index 87.7) might salary sacrifice into super. The extra contributions reduce their taxable income and boost their retirement savings. Again, the index doesn't change.

For high earners, say a professional on $150,000 (index 138.4), salary sacrifice can be a way to reduce the 37% or 45% tax bracket impact. But the index remains 138.4.

Rules and Limits from Fair Work and the ATO

The Australian Taxation Office (ATO) sets rules on what benefits can be salary sacrificed without incurring fringe benefits tax (FBT). Common exempt items include additional super contributions, certain work-related items, and some cars under novated leases. The Fair Work Ombudsman also requires that salary sacrifice does not reduce your pay below the relevant award or minimum wage. For example, if the national minimum wage is $26.44 per hour (index 48.2), you cannot sacrifice so much that your effective hourly rate drops below that.

Your salary sacrifice form must be signed before the benefit is provided. It's a legal document that outlines the agreement. Employers often have their own templates, but the key is that both parties agree on the amount and the benefit.

Impact on Super and Tax

From 1 July 2026, the super guarantee is 12% on your ordinary-time earnings. If you salary sacrifice into super, those contributions count toward the 12% minimum. Your employer must still pay the guarantee on your gross salary, but the sacrifice can reduce their top-up if the total exceeds 12%. For you, the benefit is lower taxable income and more super savings.

Tax savings depend on your marginal rate. For a resident using the tax-free threshold, the 2026–27 rates are: nil up to $18,200, 15% to $45,000, 30% to $135,000, 37% to $190,000, and 45% above. Plus a 2% Medicare levy. Salary sacrifice reduces the income taxed at these rates. But remember, the how the index works page explains that the index uses gross figures, so your index is unaffected.

Common Misunderstandings

Some people think salary sacrifice lowers their salary index, but it doesn't. The index is a benchmark of your gross earning capacity. Others think it always saves tax, but if the benefit is subject to FBT, the tax outcome can be neutral or even worse. Always check with a tax professional.

Your salary sacrifice form should clearly state the benefit, the amount, and the period. Keep a copy for your records. If you change jobs, the arrangement usually ends unless the new employer agrees to continue it.

Where to Learn More

For more on how pay compares across Australia, see the states page. If you're in a specific industry, check the industries page for typical index ranges. And for general pay topics, browse the topics section.

Summary

A salary sacrifice form is a tool to swap pre-tax salary for a benefit. It reduces your taxable income but not your gross earnings, so your position on the Salary Index stays the same. Use it wisely, keeping award minimums and ATO rules in mind.