Using a Salary Sacrifice Calculator in Australia: A Step-by-Step Guide
Shows how salary sacrificing into super changes your take-home pay and how much extra ends up in your fund. This guide walks through what each input means, the formula behind the answer and a worked example using typical Australian figures. You can follow along in the free Salary Sacrifice Calculator.
Why it matters
Australia taxes individuals on a progressive scale, so each extra dollar can be taxed at a different rate from the last. On top of income tax, most residents pay the 2% Medicare levy, and many carry HELP debts that are repaid through the tax system. Employers withhold tax from each pay under PAYG, and the annual tax return squares up the difference.
What you need to enter
The calculator asks for 2 inputs. The table shows each one with the example value used later in this guide.
| Input | Example value |
|---|---|
| Annual gross salary ($) | 100000 |
| Amount sacrificed to super per year ($) | 10000 |
The formula
Sacrificed pay is taxed at 15% inside super instead of your marginal rate. The gain is (sacrifice × 0.85) − (the drop in your after-tax pay).
Worked example
Entering the example values above gives these results:
| Result | Value |
|---|---|
| Net gain to your wealth | $1,700.00 |
| Take-home without sacrifice | $77,212.00 |
| Take-home with sacrifice | $70,412.00 |
| Reduction in take-home | $6,800.00 |
| Added to super after 15% tax | $8,500.00 |
The headline figure is $1,700.00 (net gain to your wealth). Change any input in the calculator and every result updates instantly, so you can test different scenarios side by side.
How the net gain to your wealth changes with amount sacrificed to super per year
The table below keeps every other input at the example value and moves only “Amount sacrificed to super per year ($)” up and down by 10% and 20%. It shows how sensitive the net gain to your wealth is to that one figure.
| Amount sacrificed to super per year ($) | Net gain to your wealth |
|---|---|
| 8,000 | $1,360.00 |
| 9,000 | $1,530.00 |
| 10,000 | $1,700.00 |
| 11,000 | $1,870.00 |
| 12,000 | $2,040.00 |
At 8,000 the result is $1,360.00; at 12,000 it is $2,040.00. If a small change in this input moves the answer a lot, it is worth double-checking that figure before you rely on the result.
A practical tip
Keep total concessional contributions, including your employer’s super guarantee, under the annual cap or the excess is taxed at your marginal rate.
Keep going
Before relying on the number, read Common Salary Sacrifice Mistakes (and a Better Way). You might also find these guides useful:
- Hourly to Salary Calculator Explained for Australians
- How the Salary to Hourly Calculator Works (With a Worked Example)
- Overtime Pay Calculator: Formula, Example and What the Result Means
Frequently asked questions
- Are these results exact?
- They are estimates based on standard resident rates. Your actual tax depends on your full circumstances, offsets and any private health insurance position. The ATO’s own tools or a registered tax agent give a definitive answer.
- Do the calculators work for non-residents?
- No. Non-residents have different rates, no tax-free threshold and no Medicare levy. These calculators assume you are an Australian resident for tax purposes.
- When do tax rates change?
- Rates usually change on 1 July, the start of the Australian financial year. Check the ATO website each July for the current figures.
Run your own numbers in the Salary Sacrifice Calculator.
Open the calculatorGeneral information only. Rates and thresholds change, usually on 1 July. Confirm current figures with the ATO or the relevant authority, and get personal advice for decisions about your situation.