How a Super Salary Sacrifice Calculator Can Help You Compare Pay Across States and Industries

What a Super Salary Sacrifice Calculator Does

A super salary sacrifice calculator helps you work out how much extra you could put into super by giving up part of your before-tax pay. It takes your gross annual salary, subtracts the amount you want to sacrifice, then applies the relevant tax rates and the Medicare levy. The result is your estimated take-home pay and the total super contribution (mandatory guarantee plus your sacrifice). Because pay levels vary so much across Australia, the calculator is most useful when it lets you choose a state or industry benchmark.

The Salary Index as a Starting Point

The Salary Index sets the national line at 100, which equals full-time adult ordinary-time earnings of $108,352 a year (based on ABS Average Weekly Earnings, May 2026). Your own pay index is your yearly gross divided by that national line, times 100. For example, if you earn $130,000 a year, your index is about 120. That means you earn 20% above the national average. A super salary sacrifice calculator can use this index to estimate where you sit relative to others, but you still need your actual pay to get a precise result.

State Differences in Pay

State indices show how average earnings differ around the country. The highest is the ACT at 109.9 ($119,090 annualised), followed by Western Australia at 106.9 ($115,825). At the lower end, Tasmania sits at 88.6 ($96,008) and South Australia at 94.6 ($102,450). New South Wales is slightly above the national line at 101.2, while Victoria and Queensland are just below at 98 and 97.9 respectively. The Northern Territory is 95.2.

If you live in a high-index state like WA, your base pay is likely higher, so you can sacrifice more without dropping below award minimums. A states page can help you compare the benchmarks. When using a super salary sacrifice calculator, entering your actual pay or selecting your state gives a more realistic outcome.

Industry Differences in Pay

Industry indices vary even more. Mining leads at 154.7, meaning the average full-time worker in mining earns about 55% more than the national average. Professional, scientific and technical services are at 114.7, and education and training at 105.5. Health care and social assistance is just below the line at 97.8. At the other end, retail trade is 75.9 and accommodation and food services is 72.5.

A worker in mining on a high base can salary sacrifice a larger amount and still stay within the concessional contributions cap ($30,000 from 1 July 2026, indexed). Someone in retail or hospitality on award wages may have less room to sacrifice because their base pay is closer to the minimum. The industries page provides more detail on each sector.

How Awards and Minimums Interact

Modern awards set minimum pay rates that are often higher than the national minimum wage. From 1 July 2026, the national minimum wage is $26.44 per hour ($1,004.90 per week, index 48.2). But a retail award might pay more, and a hospitality award might include casual loading. If you salary sacrifice, your reduced salary must still meet the award minimum. A super salary sacrifice calculator should warn you if your sacrifice would take your pay below the legal floor.

Tax and Super Considerations

Salary sacrifice reduces your taxable income. For 2026–27, the tax rates (excluding Medicare) are: nil up to $18,200; 15% from $18,201 to $45,000; 30% to $135,000; 37% to $190,000; and 45% above that. The Medicare levy is 2%. So if you sacrifice $10,000 and you're in the 30% bracket, you save $3,000 in tax plus $200 in Medicare levy – but the super fund pays 15% tax on the contribution, so net benefit is $3,200 minus $1,500 = $1,700. A calculator does this math for you.

Super guarantee is 12% from 1 July 2026, and the maximum contribution base is $270,830. Your employer must pay the guarantee on your reduced salary (after sacrifice), not on your original salary. That means salary sacrifice can lower the mandatory super your employer pays, but your total super (guarantee plus sacrifice) should still increase if you sacrifice enough.

Example: Comparing a WA Miner and a Tasmanian Retail Worker

Imagine a miner in Western Australia earning $130,000 a year (index about 120, well above the WA state index of 106.9). They decide to salary sacrifice $15,000. Their taxable income drops to $115,000, saving about $5,250 in tax and Medicare (assuming 30% bracket). The super fund gets $15,000, taxed at 15% ($2,250), so net contribution is $12,750. Plus the employer pays 12% on $115,000 = $13,800 super guarantee. Total super for the year: $26,550.

Now a retail worker in Tasmania earning $55,000 a year (index about 50.8, below the state index of 88.6). They can only sacrifice up to the award minimum. If they sacrifice $5,000, taxable income falls to $50,000, saving about $750 in tax (15% bracket). The super fund gets $5,000, taxed $750, net $4,250. Employer pays 12% on $50,000 = $6,000. Total super: $10,250. The calculator shows the miner benefits more because of higher pay and tax bracket.

Using the Calculator with Index Benchmarks

To get the most out of a super salary sacrifice calculator, start with your actual gross salary. If you don't know it exactly, you can use the how the index works page to estimate your index from your industry and state. Then adjust the calculator inputs accordingly. Remember that the index figures are benchmarks, not your personal pay. Always check your award or enterprise agreement for minimum rates.

Other Factors to Consider

• Junior rates: If you're under 21, your minimum wage is lower (e.g., $9.73/hr under 16). Salary sacrifice may not be practical on low pay.
• Casual loading: Casual employees get a loading (e.g., $33.05/hr for minimum wage casual). This loading is part of ordinary time earnings, so it affects the super guarantee base.
• Concessional cap: Total concessional contributions (including super guarantee and salary sacrifice) cannot exceed $30,000 per year (2026–27). A calculator should warn if you're close to the cap.
• Medicare levy surcharge: If you earn above $90,000 (single) and don't have hospital cover, you pay an extra 1% to 1.5%. Salary sacrifice can reduce your income below the threshold.

Conclusion

A super salary sacrifice calculator is a practical tool for anyone considering boosting their super. But the result depends heavily on your state and industry pay level. Use the Salary Index to understand where you stand, and check the states and industries pages for benchmarks. Always verify with your own pay slip and award conditions. The calculator gives an estimate; the real numbers come from your employer and super fund.