Your Details
Do you have a HECS/HELP loan?
$2,175
$181
$84
Before vs After Comparison
| Before | After | Difference | |
|---|---|---|---|
| Take-Home Pay (monthly) | $3,345 | $2,693 | -$652 |
| Tax Paid (annual) | $4,863 | $2,688 | -$2,175 |
| Super Added (annual) | $4,590 | $13,090 | +$8,500 |
| Effective Tax Rate | 10.8% | 6.0% | -4.8% |
How does salary sacrifice save tax?
Instead of receiving $10,000 as salary (taxed at your marginal rate), it goes directly into your super fund, where it's only taxed at 15%. The difference between your marginal rate and 15% is your tax saving.
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Before vs After: $10,000 Salary Sacrifice
How a $45,000 salary changes when you sacrifice $10,000 into super (2025–26 rates, no HECS debt).
| No Sacrifice | $10K Sacrifice | Difference | |
|---|---|---|---|
| Gross Salary | $45,000 | $45,000 | — |
| Taxable Income | $45,000 | $35,000 | -$10,000 |
| Income Tax + Medicare | $4,863 | $2,688 | -$2,175 |
| Super Contributions | $5,400 | $15,400 | +$10,000 |
| Net Take-Home Pay | $40,137 | $32,312 | -$7,825 |
Your take-home pay drops by $7,825, but you save $2,175 in tax and add an extra $10,000 to super.
Contribution Breakdown on $45K
How your super contributions break down with a $10,000 salary sacrifice.
| Annual | Monthly | Fortnightly | Weekly | |
|---|---|---|---|---|
| Gross Salary | $45,000 | $3,750 | $1,731 | $865 |
| Employer Super (SG 12%) | $5,400 | $450 | $208 | $104 |
| Salary Sacrifice | $10,000 | $833 | $385 | $192 |
| Total Super | $15,400 | $1,283 | $592 | $296 |
Total concessional contributions: $15,400 of the $30,000 annual cap (51% used).
Understanding Salary Sacrifice on $45K
On a $45,000 salary, you sit in the 16% tax bracket ($18,201–$45,000) for the 2025–26 financial year. Your marginal tax rate is 16%, plus the 2% Medicare levy, for a combined marginal rate of 18%.
When you salary sacrifice into super, the redirected amount is taxed at just 15% inside the super fund instead of your marginal rate. That means every dollar you sacrifice saves you 3 cents in tax — the difference between 18% and 15%.
Your employer already contributes $5,400 in Superannuation Guarantee (12% of $45,000). With a $10,000 salary sacrifice on top, your total concessional contributions reach $15,400, leaving $14,600 of the $30,000 cap unused. Contributions above the cap are added back to your assessable income and taxed at your marginal rate.