Salary sacrifice and after-tax super contributions can both increase retirement savings, but they affect taxable income and take-home pay differently. The suitable method depends on your income, contribution history, available cash and personal circumstances.
What Is Salary Sacrifice Into Super?
Salary sacrifice is an arrangement with an employer under which part of an employee’s future gross salary is contributed to super instead of being paid as ordinary cash salary.
For example, an employee could ask an employer to contribute A$100 from each weekly pay into super. Over 52 weeks, the additional contribution would total A$5,200.
A valid salary-sacrifice contribution is generally treated as a concessional contribution. It is usually taxed in the super fund at 15%, although additional tax can apply in some higher-income circumstances.
Because the sacrificed amount is directed to super before ordinary income tax is calculated, it generally reduces the employee’s taxable salary. It also reduces the cash available in each pay cycle.
The salary sacrifice calculator can estimate the effect using the options and fixed assumptions available in that tool.
What Is an After-Tax Super Contribution?
An after-tax contribution is money an individual pays into super from income or savings they have already received. It is commonly called a personal contribution or non-concessional contribution.
For example, an employee may receive their normal take-home pay and transfer A$5,200 from their bank account into their super fund. If they do not claim a tax deduction for it, the contribution is generally treated as non-concessional.
Ordinary non-concessional contributions are not normally subject to the standard 15% contributions tax when entering the fund because the money has already come from after-tax income.
However, making an after-tax payment does not automatically reduce taxable income. The immediate effect is a reduction in available savings or cash rather than a smaller pre-tax salary.
Salary Sacrifice vs After-Tax Super Contributions
The main difference is when the contribution is made and how it is treated for tax purposes.
Salary sacrifice:
- Comes from future pre-tax salary
- Is arranged through an employer
- Generally reduces taxable salary
- Usually counts towards the concessional contributions cap
- Normally reduces regular take-home pay
- Is generally taxed as a concessional contribution in the fund
An ordinary after-tax contribution:
- Comes from money already received
- Can usually be paid directly by the individual
- Does not automatically reduce taxable income
- Generally counts towards the non-concessional contributions cap
- Reduces cash or savings after it has been received
- Is not normally taxed again when entering the fund
Neither option creates free money. Both move funds that could otherwise be available outside super into an environment with access restrictions.
Before comparing contribution strategies, the simple salary calculator can provide an initial estimate of salary, tax, Medicare levy and employer super.
Salary Sacrifice Calculation Example
Assume an employee earns A$100,000 excluding employer super and sacrifices A$5,200 into super during the financial year.
The simplified adjusted salary amount is:
A$100,000 − A$5,200 = A$94,800
The A$5,200 salary-sacrifice contribution is generally included in concessional contributions. At a standard 15% contributions-tax rate:
A$5,200 × 15% = A$780
The amount remaining in super after this contribution tax would be:
A$5,200 − A$780 = A$4,420
This simplified example excludes investment returns, fees, insurance premiums, Division 293 tax and any effect of exceeding a contribution cap.
Salary sacrifice can reduce ordinary income tax, but the exact benefit depends on the employee’s marginal rate and other circumstances. The salary tax planning calculator can help compare the scenarios supported by that calculator.
After-Tax Contribution Example
Now assume the same employee contributes A$5,200 from their bank account and does not claim an income-tax deduction.
The employee’s taxable salary does not reduce merely because this payment was made. The contribution generally enters the fund as a non-concessional contribution and is not normally reduced by the standard 15% contributions tax.
This does not necessarily make the after-tax method better. The employee needed to earn enough gross income to retain A$5,200 after income tax and other deductions.
Salary sacrifice may provide a larger tax benefit for some people, while an after-tax contribution can offer greater payment flexibility. Results depend on income, caps, employer arrangements and the intended tax treatment.
What If You Claim a Deduction for a Personal Contribution?
A personal contribution initially paid from a bank account can sometimes be claimed as an income-tax deduction if eligibility and notice requirements are satisfied.
When a valid deduction is claimed, that contribution is generally treated as concessional rather than non-concessional. It may then be subject to contributions tax in the fund and count towards the concessional cap.
This means “after-tax contribution” can describe how money was physically paid, but its final tax classification depends partly on whether a deduction is claimed.
Anyone intending to claim a deduction should check the required notice process and fund acknowledgement before lodging a tax return. Do not assume every personal payment will remain non-concessional.
Check the Super Contribution Caps
Contribution caps limit how much can enter super under concessional tax treatment. Employer super, salary-sacrifice amounts and personal contributions for which a deduction is claimed generally share the concessional cap.
For 2026–27, the general concessional contributions cap is A$32,500. The general non-concessional cap is A$130,000, although a person’s available cap can be affected by total super balance, bring-forward rules, age, previous contributions and other conditions.
The ATO publishes the current super contribution caps. Check current figures and your contribution history before adding a large amount.
Exceeding a cap can create additional tax and administration. The headline cap should not be treated as an automatic recommendation to contribute that amount.
Which Contribution Method May Suit You?
Salary sacrifice may appeal to an employee who wants automatic contributions from every pay and is comfortable reducing regular take-home income.
After-tax contributions may be useful when someone wants to decide the amount and timing themselves, including making an occasional payment from savings.
Before committing money, consider:
- Regular living expenses
- Emergency savings
- Existing employer super
- Contributions already made during the year
- Expected changes in income
- Debts and short-term goals
- Access restrictions applying to super
The super retirement calculator can illustrate how contribution and growth assumptions may affect a future balance. Its result remains an estimate and cannot predict investment returns.
People also comparing complete employment offers should read salary package vs base salary in Australia because employer super may already be included in the advertised package.
If contributions compete with a property deposit or mortgage goal, the guide explaining how much house you can afford on your salary in Australia provides a separate budgeting perspective.
Frequently Asked Questions
Q1: Does salary sacrifice reduce take-home pay?
A: Yes. Part of future gross salary is directed to super, so less cash is normally available in each pay cycle.
Q2: Are salary-sacrifice contributions taxed?
A: They are generally concessional contributions and are usually taxed at 15% in the super fund, although different treatment can apply in some circumstances.
Q3: Does an after-tax contribution reduce taxable income?
A: Not automatically. A qualifying personal contribution may reduce taxable income only if a valid deduction is claimed and the required process is completed.
Q4: Do employer contributions count towards the concessional cap?
A: Generally yes. Employer contributions, salary sacrifice and deductible personal contributions usually share the same concessional cap.
Q5: Can I use both contribution methods?
A: It may be possible, but each contribution must be classified correctly and monitored against the relevant cap.
Q6: Are calculator results financial advice?
A: No. They are estimates based on entered information and fixed assumptions, not personal financial advice or a guarantee of tax outcomes.