What are catch-up super contributions and how should you use them?

Super is built up steadily over a working life, but life doesn't always run on a steady schedule. Career breaks, part-time work, time out for caring responsibilities, periods of unemployment; all of these can leave gaps in your contributions. Catch-up concessional contributions exist precisely for this reason.

Understanding catch-up concessional contributions

If you haven't used your full concessional contributions cap in previous years, you may be able to carry those unused amounts forward and contribute more than the standard annual cap in a later year. It's a practical way to rebuild your super balance if contributions have been lower than you'd have liked.

Eligibility criteria

To access catch-up contributions, two conditions need to be met:

• Total super balance. Your total superannuation balance must be under $500,000 at the end of the previous financial year.
• Unused cap amounts. You can carry forward unused concessional cap amounts from up to five previous financial years, with amounts tracked from 1 July 2018. Any unused amounts that aren't used within five years expire.

For example: if you have unused cap amounts from the 2020–21 financial year, you need to use them by the end of 2025–26, or they'll expire.

You can check your unused cap amounts through your myGov account linked to the ATO.

Types of concessional contributions

Concessional contributions go into your super before tax and are taxed at 15% within the fund. They come in three forms:

• Employer contributions. Mandatory contributions your employer makes under the Superannuation Guarantee. As of 1 July 2025, the rate is 12% of your ordinary time earnings.
• Salary sacrifice contributions. A voluntary arrangement where you redirect part of your pre-tax salary into super, reducing your taxable income in the process.
• Personal deductible contributions. Contributions you make from your own after-tax income, which you then claim as a tax deduction.

All three types count toward your annual concessional contributions cap, which sits at $30,000 from 1 July 2024.

Strategic use of catch-up contributions

For anyone who's had irregular income or taken time away from work, catch-up contributions can be a genuinely useful tool. Two main benefits worth knowing about:

• Tax efficiency. Making additional concessional contributions reduces your taxable income, which can lower your overall tax bill for that year.
• A stronger super balance. Topping up in years where you have more capacity to contribute can make a meaningful difference to where you end up at retirement.

One thing to be aware of: if your combined income and concessional contributions exceed $250,000 in a financial year, you may be liable for an additional 15% Division 293 tax on some or all of your concessional contributions. Worth factoring in if you're a higher earner.

Steps to make catch-up contributions

• Check your eligibility. Confirm your total super balance is below $500,000 and review your unused cap amounts via ATO online services through myGov.
• Choose your contribution type. You can contribute via salary sacrifice (arranged with your employer) or through personal deductible contributions (made directly and followed up with a 'Notice of intent to claim or vary a deduction for personal super contributions' form to your fund).
• Keep an eye on your caps. Make sure your total concessional contributions, including any catch-up amounts, stay within your available cap. Exceeding it triggers the excess contributions tax.

Making the most of what you've got

Catch-up concessional contributions won't suit everyone, but for those who've had gaps in their working life, they offer a real opportunity to close the distance and arrive at retirement in a stronger position. The key is understanding what you're entitled to and acting before those unused amounts expire.

A licensed financial adviser can help you work out whether this strategy makes sense for your situation and how to structure it effectively.

Sources:

• Australian Taxation Office, concessional contributions cap
• Australian Taxation Office, understanding concessional and non-concessional contributions
• Australian Taxation Office, personal super contributions
• Australian Taxation Office, Division 293 tax on concessional contributions by high-income earners
• Australian Taxation Office, options for adding to your super