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How to Calculate Salary After Tax in Australia: A Guide Using the Salary Index
Learn how to calculate your salary after tax in Australia using the Salary Index. See where your gross pay sits against the national line and estimate your take-home pay.
The salary index compares your gross annual earnings to the national line of $108,352 (index 100). After-tax pay depends on tax brackets and Medicare levy.
How to calculate salary after tax using the Salary Index
When you want to calculate salary after tax in Australia, you need two things: your gross annual earnings and the current tax rates. The Salary Index gives you a quick way to see where your gross pay sits against the national line. The national line (index 100) is $108,352 a year, based on the Australian Bureau of Statistics Average Weekly Earnings for May 2026. Once you know your gross, you can estimate your take-home pay using the 2026–27 tax brackets and the Medicare levy.
Step 1: Find your gross salary index
Your salary index is your yearly gross divided by $108,352, multiplied by 100. For example:
- $80,000 gross → index 73.8 (well below the national line)
- $108,352 gross → index 100 (exactly at the national line)
- $120,000 gross → index 110.8 (above the national line)
This index helps you compare your pay to the average full-time adult ordinary-time earner. You can also see how your state or industry compares using the states and industries pages. For instance, the mining industry index is 154.7, meaning the average miner earns about 55% more than the national line. Retail trade sits at 75.9, well below.
Step 2: Estimate your tax and Medicare
Resident tax for 2026–27 (excluding Medicare) is:
- $0 – $18,200: nil
- $18,201 – $45,000: 15% on the amount over $18,200
- $45,001 – $135,000: 30% on the amount over $45,000
- $135,001 – $190,000: 37% on the amount over $135,000
- $190,001 and above: 45% on the amount over $190,000
Add the Medicare levy of 2% of your gross income. This estimate assumes you claim the tax-free threshold and are a resident. It ignores HELP repayments, salary sacrifice, and the Medicare levy reduction or surcharge.
Example: $80,000 gross
- Tax: $0 on first $18,200; $4,020 on next $26,800 (15%); $10,500 on remaining $35,000 (30%) = $14,520
- Medicare: 2% of $80,000 = $1,600
- Total deductions: $16,120
- Take-home: $63,880
- Salary index: 73.8
Example: $120,000 gross
- Tax: $0 on $18,200; $4,020 on $26,800; $22,500 on $75,000 (30%) = $26,520
- Medicare: 2% of $120,000 = $2,400
- Total deductions: $28,920
- Take-home: $91,080
- Salary index: 110.8
Step 3: Understand what the index doesn’t show
The salary index is a gross benchmark. It doesn’t include superannuation (the super guarantee is 12% from 1 July 2026, but that’s paid on top of your salary, not taken from it). It also doesn’t reflect award rates, which can be higher than the national minimum wage. For example, the national minimum wage from 1 July 2026 is $26.44 per hour ($52,255 annualised, index 48.2), but many modern awards set higher minimums. The pay guides on this site can help you check award rates.
State and industry variations
Your salary index might look different if you compare to your state’s average. For instance, the ACT has an index of 109.9 (average $119,090), while Tasmania is 88.6 ($96,008). If you earn $100,000 in Tasmania, your personal index is 92.3, which is above the state average but still below the national line. In Western Australia (index 106.9, $115,825), the same $100,000 gives a personal index of 92.3, which is below the state average. The how the index works page explains these comparisons in more detail.
Using the index to plan your after-tax pay
Once you calculate salary after tax, you can use the index to see if your gross pay is keeping up with the national average. For example, if you earn $90,000 (index 83.1) and your take-home is about $70,000, you might aim for a raise to reach the national line. The index is a simple tool to benchmark your earnings, but remember that after-tax pay depends on your exact tax situation.
For more topics on pay, awards, and super, visit the topics page. And if you’re comparing job offers, check the industry and state indices to see how the local market stacks up.
Final note on accuracy
These calculations use the standard tax rates and Medicare levy. Your actual take-home may differ if you have a HELP debt, salary sacrifice into super, or are eligible for the Medicare levy reduction. Always consult the ATO or a tax professional for your personal situation. The salary index is a benchmark, not a quote for a specific role or employer.
FAQs
(FAQs are provided in the faqs array above.)
Questions people ask
What is the salary index and how does it relate to after-tax pay?
The salary index compares your gross annual earnings to the national line of $108,352 (index 100). For example, a gross salary of $80,000 gives an index of 73.8. After-tax pay is calculated separately using tax brackets and the Medicare levy. The index itself does not show take-home pay, but it helps you see where your gross pay sits relative to the average Australian worker.
How do I calculate my take-home pay using the tax brackets?
For 2026–27, resident tax rates are: nil on the first $18,200; 15% on the next $26,800 (to $45,000); 30% on the next $90,000 (to $135,000); 37% on the next $55,000 (to $190,000); 45% above $190,000. Add Medicare levy of 2% of your gross income. For example, a gross salary of $80,000: tax = $14,520, Medicare = $1,600, take-home = $63,880. For $120,000: tax = $26,520, Medicare = $2,400, take-home = $91,080.
Does the salary index account for superannuation and tax?
No. The salary index is based on gross ordinary-time earnings before tax and before the super guarantee (12% from 1 July 2026). Your take-home pay is after tax and Medicare, and super is an additional contribution usually paid by your employer on top of your salary. The index is a benchmark for gross pay, not a net pay calculator.