Making extra super contributions can reduce your tax bill. Concessional (pre-tax) contributions are taxed at 15% in the fund, often lower than your marginal rate. Non-concessional (after-tax) contributions don’t give a tax deduction but boost your retirement savings under concessional tax rules.

Understanding Concessional Contributions vs Non-Concessional Super Contributions

Concessional contributions are paid into super before personal income tax (e.g. salary-sacrifice or employer Super Guarantee). You (or your employer) claim these as deductions, and the fund pays 15% tax on them. Because this 15% rate is generally lower than most people’s marginal rate, making concessional contributions can provide immediate tax relief. The trade-off is your money goes into super, locking it until retirement.

Non-concessional contributions are after-tax (personal savings) contributions. You’ve already paid income tax on this money, so there’s no deduction when you contribute. These don’t reduce your current tax, but once inside super they benefit from the fund’s low tax environment (15% on earnings, often 0% in pension phase). Non-concessional contributions are useful for topping up super with excess savings or using strategies like the bring-forward rule (up to 3 years of caps).

Concessional Contributions: Tax Treatment and Limits

When you make concessional contributions, the fund taxes it at 15% on entry. For example, a $10,000 salary sacrifice from someone on a 37% marginal rate normally reduces their taxable income by $10,000. Without super, they’d pay $3,700 tax on that $10k. Inside super, the $10k is taxed at 15% ($1,500), so their tax saving is $2,200. If your income is high enough, you may pay an extra 15% (making 30%) on that $10k, but you still save versus paying 37% personally.

The concessional cap is the annual limit before extra tax applies. From 1 July 2024 it’s $30,000 (and from 1 July 2026 it rises to $32,500). This cap includes all before-tax contributions: employer Super Guarantee, salary sacrifice, and any personal deductible contributions. If you exceed the cap, the excess is taxed at your marginal rate.

Division 293 Tax (High-Income Earners)

Australia imposes a Division 293 tax on concessional super contributions for very high earners. If your income plus concessional super contributions exceed $250,000, an extra 15% tax is levied on the lesser of the excess or the contributions. In effect, a high earner pays 30% tax on contributions instead of 15%. For example, if you earn $260,000 and make $20,000 concessional contributions, you pay 30% (not 15%) on the portion that pushes you above $250k. Division 293 ensures the tax concession is reduced for wealthier individuals.

Carry-Forward Unused Caps

One tax advantage is the unused cap carry-forward rule. If you have a total super balance under $500,000 at 30 June last year, any unused concessional cap (from 1 July 2018 onwards) can be carried forward up to 5 years. This means you may contribute more than $30k in a year if you didn’t use your cap in previous years. For instance, if you earned irregular income or missed super contributions, carry-forward lets you “catch up” and still get the tax break later.

Non-Concessional Contributions: Rules and Benefits

Non-concessional contributions are paid from after-tax income. There’s no upfront tax deduction, but the benefit is they boost your super balance under concessional tax rules. The annual cap (before penalty tax) is $120,000 from 1 July 2024. If you’re under $1.84m total super at 30 June, you can use the bring-forward rule to contribute up to $360,000 in one year (by using the next two years’ caps).

Non-concessional super contributions are not taxed in the fund (you’ve already paid income tax). They can still save you tax indirectly: once inside super, investment earnings face only 15% (often much lower than personal tax), and become 0% in retirement phase.

Government Co-contribution (Low Earners)

For low-to-middle income earners, the government provides a co-contribution. If your income is below about $56,112 (2025/26) and you make a personal (non-concessional) contribution, you may get up to $500 from the government. This is effectively “free money” added to your super, boosting savings tax-free. The co-contribution phases out above a certain income.

Spouse Contributions Tax Offset

If you contribute to your spouse’s super (and they earn less than about $40,000), you can claim a tax offset up to $540. This encourages equalising super balances. For example, a higher-earning partner can get a deduction for topping up the other’s super, reducing the contributor’s tax bill by up to $540.

Downsizer Contribution and CGT

From age 60, you may use proceeds from selling your home (or former home) to superannuation under the “downsizer” rule. You can contribute up to $300,000 per person (not counting as cap) to super. This lets you move unrealised capital gains into the concessional tax environment (super), potentially saving tax on those gains (since super earnings are taxed at most 15%). The downsizer contribution doesn’t need to fit under your caps, but you must meet eligibility (home was your main residence, etc.).

ATO Substantiation & Record-Keeping

Keep detailed records! For any concessional contributions you claim as a deduction, retain notices of intent (for personal deductible contributions), payslips (for salary sacrifice), and contribution statements. For non-concessional or spouse contributions, keep evidence of payments (statements, bank records). If accessing carry-forward, track previous years’ contributions. The ATO generally requires records to support claims, so hold onto documents for at least 5 years after lodgement. Use the ATO’s online resources to monitor caps and contributions. Always check current tax year caps as they change (e.g. after AWOTE adjustments).

Practical Tips to Maximise Tax Benefits

• Use Salary Sacrifice Wisely: Arrange extra Super Guarantee or sacrifice part of your salary into super up to the concessional cap. This directly lowers your taxable income.
• Stay Under Caps (or Plan Exceeding): Know the caps for your current year (e.g. $30k/yr concessional) and plan contributions accordingly. Exceeding caps can trigger penalty tax.
• Carry-Forward & Bring-Forward: If you have spare room, use carry-forward unused concessional caps (for low TSB) or bring-forward non-concessional caps (if under ~$1.5m TSB) to turbo-charge contributions.
• Check Spouse & Govt Incentives: If your spouse’s super is lower, consider contributing to their fund for a tax offset. If your income is modest, check if the co-contribution is available by contributing up to the co-contribution limit.
• Plan Around Taxes: If your income is near $250k, calculate if Div 293 will apply. Sometimes adjusting the timing of a contribution can avoid crossing the threshold. For example, delay a $10k salary sacrifice until a year when your income is lower.
• Downsizer for Equity: If you’re 60+ and selling your home, remember the downsizer contribution to sidestep CGT at up to $300k per person.

Note: Caps and rates may change – check current tax year rules.

FAQs

• Q: Can I claim a tax deduction for all my super contributions?
  A: Only concessional contributions (salary sacrifice, Super Guarantee, deductible personal) are tax-deductible, since they’re made pre-tax. Non-concessional (after-tax) contributions give no deduction.
• Q: What happens if I exceed the concessional cap?
  A: Excess concessional contributions are taxed at your marginal rate (so you lose the 15% benefit). Avoid going over $30k (2024/25) or ensure you understand the excess contribution rules.
• Q: How do I know if Division 293 tax applies to me?
  A: If your income plus concessional contributions exceeds $250,000, you may owe an extra 15% tax on some contributions. Check your ATO notice or consult an accountant if you’re near that threshold.
• Q: What records do I need for super contributions?
  A: Keep pay slips (showing SG or salary-sacrifice amounts), official super contribution statements, and any ATO notices of intent (for deductible personal contributions). If using carry-forward, maintain records of past contributions and total super balance. The ATO can audit these, so keep them for at least 5 years.
• Q: Can my spouse or I claim government incentives?
  A: Yes. You may get a government co-contribution (up to $500) if you earn under the threshold and make a personal contribution. Also, contributing to a low-earning spouse’s super can give you a tax offset up to $540. Check the ATO pages for eligibility details.

Conclusion and Next Steps

Super contributions offer real tax benefits by leveraging the concessional 15% rate and government incentives. To make the most of them, plan early: know your caps for the year, use salary sacrifice if possible, and consider carry-forward or bring-forward strategies. Always document your contributions and use ATO tools to check your caps. Remember, rules change yearly – check current tax year rules on the ATO site.

Finally, super is long-term saving. Boosting your super now not only cuts today’s tax but can greatly increase your retirement nest egg. If you’re unsure, consult a financial adviser or tax professional (HPartners can help!) Make a plan this financial year: every extra dollar you put in not only grows tax-sheltered but also works for you through the power of compounding in super!

Any advice is general in nature only and has been prepared without considering your needs, objectives or financial situation. Before acting on it, you should consider its appropriateness for you, having regard to those factors. Before making any decision about whether to acquire a financial product, you should obtain the Product Disclosure Statement.