Salary Sacrificing Calculator: How Awards and the National Minimum Wage Set Your Sacrifice Limit

What is a salary sacrificing calculator?

A salary sacrificing calculator is a tool that works out how much of your pre-tax pay you can put towards benefits like superannuation, a car, or electronic devices, and how much tax you save as a result. It also checks that your remaining salary stays above the legal minimum – that is, the rate set by your award or the national minimum wage. In Australia, you cannot sacrifice so much that your take-home pay (before tax) falls below the minimum you are entitled to under the Fair Work system.

Awards versus the national minimum wage

The national minimum wage from 1 July 2026 is $26.44 per hour, or $1,004.90 per week for a full-time adult. That works out to an annualised $52,255, which sits at index 48.2 on the Salary Index. In other words, it is less than half of the national line of $108,352 (index 100). Most modern awards pay more than the national minimum wage. For example, the entry-level rate under many awards is $25.74 per hour – slightly below the national minimum, but awards often have higher classifications. From 1 July 2026, award minima rose by 4.75%, so many award rates are now above the national minimum.

When you use a salary sacrificing calculator, you need to know which minimum applies to you. If you are covered by an award, your legal floor is the award rate for your classification. If you are award-free, the national minimum wage is your floor. The calculator will ask for your hourly or weekly pay and your award (if any) to determine the maximum sacrifice.

How the calculator uses the index

The how the index works page explains that index 100 equals full-time adult ordinary-time earnings. The national minimum wage at index 48.2 is a useful benchmark. If your pay is above that, you have room to sacrifice. For instance, a retail worker on a mid-level classification might earn $30 per hour, which is above the national minimum. The calculator would show that you could sacrifice up to $3.56 per hour (the difference between $30 and $26.44) without falling below the minimum. But if your award rate is $28 per hour, then your floor is $28, so the maximum sacrifice is only $2 per hour.

Concrete examples

Let’s take a full-time adult working in accommodation and food services. The industry index is 72.5, meaning average earnings are about $78,500 per year. But many workers are on award rates. Say you earn $25 per hour under the Hospitality Industry General Award. That is below the national minimum wage of $26.44, so you cannot sacrifice anything – your pay is already below the legal floor. In fact, your employer must pay you at least the national minimum wage, so your rate should be $26.44 or higher. A salary sacrificing calculator would flag this and remind you to check your award.

Now consider a professional in the scientific and technical sector (index 114.7, average around $124,000). If you earn $70,000 per year (about $33.65 per hour), you are above the national minimum. You could sacrifice up to $7.21 per hour. The calculator would also factor in your super guarantee (12% from 1 July 2026) and tax savings. For a resident, the tax rates for 2026–27 are nil up to $18,200, then 15% to $45,000, 30% to $135,000, 37% to $190,000, and 45% above. By sacrificing into super, you reduce your taxable income and pay less tax. The calculator shows the net benefit.

Junior rates and the calculator

Junior employees have lower minimum rates based on age. For example, a 17-year-old’s national minimum is $15.28 per hour. If that junior is on an award that pays $16 per hour, the calculator would use $16 as the floor. The salary sacrificing calculator must apply the correct junior percentage. The reference data shows junior rates from $9.73 (under 16) to $25.83 (20 years). Always check your award, as some awards set different junior percentages.

State differences

Your location also matters because state averages vary. For instance, Western Australia has an index of 106.9 (annualised $115,825), while Tasmania is 88.6 ($96,008). If you work in WA, your pay is likely higher, giving more room to sacrifice. But the minimum wage and award rates are national, so the floor is the same everywhere. The calculator doesn’t change the floor based on state, but it can help you compare your pay to the states average.

Why use a salary sacrificing calculator?

Without a calculator, you might accidentally sacrifice too much and end up below your legal minimum. That would be illegal and could lead to underpayment claims. The calculator also shows your tax savings, helping you decide if salary sacrificing is worth it. For example, if you are in the 30% tax bracket, every dollar sacrificed saves you 30 cents in tax plus 2% Medicare levy. Over a year, that adds up.

Links to pay guides and topics

For more detail on award rates, see the pay guides page. If you want to explore how different industries compare, visit the industries page. And for a broader look at how the index is calculated, read how the index works.

Summary

A salary sacrificing calculator is a practical tool for anyone considering a salary sacrifice arrangement. It ensures you stay above your legal minimum – whether that is the national minimum wage or a higher award rate. By understanding where your pay sits on the index, you can see how much room you have. Always use the latest rates from Fair Work and the ATO, and remember that your award may set a higher floor. The calculator takes the guesswork out of the process and helps you make an informed decision.