How the ATO Salary Sacrifice Calculator Affects Your Gross Pay, Super, and Tax

What the ATO Salary Sacrifice Calculator Means for Your Pay

The ATO salary sacrifice calculator is a tool that helps you see how swapping part of your gross salary for a non-cash benefit—most commonly extra super contributions—changes your tax and take-home pay. In Australia, salary sacrifice is an arrangement with your employer where you agree to forgo some cash wages in return for benefits such as additional super, a car, or electronic devices. The calculator works out the income tax and Medicare levy on your reduced salary, and shows the net effect on your pocket.

Gross Pay and the National Index

Your gross pay is the starting point. The national line for full-time adult ordinary-time earnings is $108,352 a year (index 100), based on the ABS Average Weekly Earnings of $2,083.70 per week (May 2026). If you earn that amount, your index is 100. A salary sacrifice arrangement reduces your gross pay for tax purposes, but the benefit you receive may still be counted as part of your remuneration. The Salary Index measures gross ordinary-time earnings, so if you sacrifice $10,000 into super, your taxable gross drops to $98,352, which would put you at index 90.8. However, your total remuneration package (including the super contribution) is still around $108,352. The index is a benchmark for cash earnings, not total package value.

How Salary Sacrifice Affects Tax

When you salary sacrifice, your employer pays the benefit directly from your pre-tax salary. This lowers your assessable income. For the 2026–27 year, resident tax rates are:

• Nil up to $18,200
• 15% from $18,201 to $45,000
• 30% from $45,001 to $135,000
• 37% from $135,001 to $190,000
• 45% above $190,000

Plus a 2% Medicare levy. If you earn $100,000 and sacrifice $10,000 into super, your taxable income becomes $90,000. You save tax at your marginal rate (30% in this bracket) on the sacrificed amount, plus 2% Medicare levy—a total saving of $3,200. The super fund pays 15% tax on the contribution ($1,500), so you effectively gain $1,700 compared to receiving the cash and then contributing after-tax. The ATO salary sacrifice calculator runs these numbers for you.

Super Guarantee and Caps

Your employer must pay super guarantee of 12% on your ordinary-time earnings (from 1 July 2026). Salary sacrifice contributions are on top of that, but they count towards the concessional contributions cap of $30,000 per year (2026–27). If you exceed the cap, the excess is taxed at your marginal rate plus an interest charge. The calculator helps you stay within the cap. For example, if your salary is $80,000, the super guarantee is $9,600. You could sacrifice up to $20,400 extra without hitting the cap. The pay guides on this site explain award-specific rules, but salary sacrifice is generally available to most employees under an agreement with their employer.

State and Industry Context

Your gross pay relative to the index varies by state and industry. For instance, the ACT has an index of 109.9 ($119,090 annualised), while Tasmania is 88.6 ($96,008). If you work in mining (index 154.7) or professional services (114.7), your gross pay is well above the national line. Salary sacrifice can be more beneficial at higher marginal rates. The states page shows local benchmarks, and industries gives sector averages. Remember that the index is for ordinary-time earnings, not total package.

Take-Home Pay Example

Consider a resident earning $108,352 (index 100) with no other deductions. Without salary sacrifice, tax (including Medicare) is roughly $26,938, leaving $81,414 take-home. If they sacrifice $10,000 into super, taxable income falls to $98,352. Tax on that is about $23,738, a saving of $3,200. The super fund receives $10,000 and pays $1,500 tax, so net super gain is $8,500. Take-home cash is $74,614, but total wealth (cash plus super net) is $83,114—better than the no-sacrifice scenario by $1,700. The ATO salary sacrifice calculator shows this trade-off clearly.

Important Caveats

• Salary sacrifice cannot reduce your pay below the national minimum wage ($26.44/hr, $1,004.90/week) or the relevant award rate. Modern awards set minimums that may be higher.
• The calculator assumes you use the tax-free threshold and pay the Medicare levy. It ignores HELP repayments, the Medicare levy surcharge, and the low-income tax offset.
• Super contributions are preserved until retirement, so you lose access to that cash.
• Always check your award or enterprise agreement; some restrict salary sacrifice.

For a deeper understanding of how your pay compares nationally, see how the index works. The topics page covers related subjects like tax brackets and super caps.