Catch-Up Concessional Contributions: Using Unused Cap Space
If you haven't maxed out your concessional super contributions in recent years, you may be sitting on a significant opportunity. The carry-forward rule lets you use up to five years of unused cap space to supercharge your retirement savings.
How Carry-Forward Contributions Work
Since 1 July 2018, the Australian Government has allowed individuals to carry forward unused concessional contribution cap amounts from up to five previous financial years. This means if your employer's Super Guarantee (SG) payments and any salary sacrifice arrangements didn't fully utilise your $30,000 annual concessional cap, the unused portion rolls forward.
The carry-forward rule was designed to recognise that not everyone can consistently maximise their concessional contributions every year. Career breaks, periods of reduced income, or simply not being aware of the opportunity can all result in unused cap space accumulating over time.
Unused amounts began accruing from the 2018-19 financial year onwards. Any unused cap from years prior to 2018-19 cannot be carried forward, regardless of how little you contributed during those years.
Key requirement: To access carry-forward contributions, your total superannuation balance must be below $500,000 as at 30 June of the previous financial year. If your balance exceeds this threshold, you're limited to the standard $30,000 annual cap.
Eligibility and Conditions
The carry-forward rule has specific eligibility criteria that you need to satisfy before making additional concessional contributions. Understanding these conditions will help you avoid inadvertently exceeding the caps and facing excess contributions tax.
To be eligible, you must meet all of the following conditions:
- Total super balance under $500,000: Measured at the previous 30 June. If you have multiple super accounts, all balances are combined.
- Unused amounts exist: You must have unused concessional cap amounts from one or more of the previous five financial years (starting from 2018-19).
- Standard eligibility: You must be eligible to make concessional contributions in the first place (generally under age 75, or working if between 67 and 74).
Your super fund or the ATO can confirm your available carry-forward amounts. The easiest way to check is through your myGov account linked to the ATO, where your unused concessional contribution cap amounts are displayed under the "Super" section.
Checking Your Unused Cap on myGov
Log in to myGov and navigate to the ATO section. Under "Super," select "Carry-forward concessional contributions." You'll see a breakdown of unused amounts for each financial year since 2018-19, along with your total available cap for the current year.
Calculating Your Available Cap Space
Your available concessional contribution cap for any given year equals the current year's cap ($30,000 for 2024-25) plus any unused amounts from the previous five years. The oldest unused amounts are applied first, which means amounts from six years ago expire and can no longer be accessed.
It's important to remember that "concessional contributions" includes all before-tax contributions: your employer's SG, salary sacrifice, and any personal contributions you claim as a tax deduction. Many people underestimate their total concessional contributions because they forget to include employer SG.
Example: Catch-Up Calculation
Sarah earns $95,000 and her employer contributes 11.5% SG, which equals $10,925 per year. She has never salary sacrificed or made personal deductible contributions.
Over the past five years, her unused concessional cap space has been approximately $19,075 per year (the $30,000 cap minus $10,925 SG). That's roughly $95,375 in accumulated unused cap space.
If Sarah receives a $60,000 bonus this year, she could salary sacrifice a large portion into super and pay just 15% contributions tax instead of her 34.5% marginal rate (including Medicare Levy).
Keep in mind that the concessional cap has changed over the years. It was $25,000 from 2017-18 to 2020-21, and increased to $27,500 for 2021-22 to 2023-24, before rising to $30,000 for 2024-25. Your unused cap for each year is based on the cap that applied in that specific year.
Strategic Uses of Catch-Up Contributions
Catch-up contributions are particularly valuable in certain life circumstances. Understanding when to deploy this strategy can make a meaningful difference to your retirement outcome.
Bonus or Windfall Years
If you receive a significant bonus, commission, or other windfall, catch-up contributions let you shelter a much larger amount from your marginal tax rate. Instead of paying up to 47% tax (including Medicare Levy) on that income, you pay just 15% by directing it into super as a concessional contribution. The tax saving alone can be substantial.
Late Starters to Super
If you're in your 40s or 50s and haven't prioritised super until now, catch-up contributions provide a mechanism to accelerate your savings. Combined with compound investment returns, even a few years of larger contributions can significantly improve your retirement position.
Return-to-Work After a Career Break
Parents who took time off to raise children, people who travelled, or those who experienced periods of illness may have years of minimal super contributions. The carry-forward rule is specifically designed to help in these situations, allowing you to make up for lost time when your income recovers.
Strategy tip: If you're planning to use catch-up contributions, consider the timing carefully. Making a large contribution in a year when your marginal tax rate is highest will deliver the greatest tax benefit. Conversely, if you're expecting a lower-income year, it may be better to wait.
Potential Pitfalls to Watch
While catch-up contributions are a powerful tool, there are several pitfalls that can catch people off guard. Being aware of these will help you execute the strategy effectively.
Division 293 tax: If your income plus concessional contributions exceeds $250,000, you'll pay an additional 15% tax on the contributions above the threshold. A large catch-up contribution could push you over this limit, reducing the net tax benefit.
Timing of contributions: Contributions must be received by your super fund before 30 June to count for that financial year. Electronic transfers can take several business days, so don't leave it to the last minute. Many advisers recommend completing catch-up contributions by mid-June at the latest.
Claiming the deduction: If you're making personal concessional contributions (rather than salary sacrifice), you must lodge a "Notice of intent to claim a deduction" with your super fund before lodging your tax return or before the end of the financial year following the year of contribution, whichever comes first. Your fund must acknowledge the notice before you can claim.
- Check your total super balance before 30 June to confirm eligibility
- Verify unused cap amounts via myGov before committing to large contributions
- Consider the interaction with Division 293 if you're a high earner
- Allow sufficient time for funds to be received by your super fund
- Lodge the notice of intent to claim a deduction if making personal contributions
How Talk Through Wealth Helps
Maximising catch-up contributions requires careful tracking and forward planning. Talk Through Wealth can help you model different scenarios so you make the most of your available cap space.
- Calculate your accumulated unused concessional cap space year by year
- Model the tax savings of catch-up contributions at different income levels
- Project how additional contributions affect your retirement balance
- Identify the optimal timing for catch-up contributions based on expected income
- Factor in Division 293 impacts for high-income scenarios
Maximise Your Unused Super Cap Space
See how catch-up contributions could accelerate your retirement savings.
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