The catch-up or "carry-forward" super rules let people with less than $500,000 in super at 30 June 2025 use any unused concessional (tax-deductible) contribution limits from the previous five financial years. In practice, that means anyone who has not always maxed out their employer super and salary sacrifice since 2018-19 may have extra room to contribute and claim a tax deduction, provided they meet the balance test and have spare cash after covering higher everyday living costs.
Because the rules only look back five years, the clock is now ticking on unused space from 2020-21, when the annual concessional cap was $25,000, compulsory employer super sat at 9.5% of wages and the average full-time wage was about $90,000. In that year, a typical worker had roughly $8,550 tipped into super by their employer, leaving around $16,450 of concessional cap unused, often more because many people earned less during the Covid downturn. However, you can only tap this backlog after you fully use this year’s higher $30,000 concessional cap, which already includes your employer’s contributions and any salary sacrifice.
For high earners, especially those in the top tax bracket, the numbers can be compelling. A $50,000 personal concessional contribution could cut taxable income by the same amount, delivering an immediate tax saving at their marginal rate while the super fund pays only 15% contributions tax. That sort of strategy tends to work best for people with stable finances, no high-interest debt and a focus on bringing retirement forward, including those who had patchy super due to career breaks or parental leave. Some older workers who can already access their super may even structure withdrawals to keep their total balance under the $500,000 threshold so they can keep using carry-forward caps in future years, but this needs careful professional advice to avoid unintended consequences.
Looking ahead, the catch-up rules seem to be becoming a go-to tool when people receive bonuses, inheritances, redundancy payouts or realise capital gains because they allow flexible, last-minute decisions late in the financial year. Still, this is not a one-size-fits-all fix. Cost-of-living pressure means many households simply cannot spare extra cash and there are alternative strategies such as co-contributions or spouse contributions that may fit better. Anyone considering catch-up contributions must also get the timing and paperwork right. Contributions need to reach the fund by 30 June and a valid notice of intent to claim a deduction has to be lodged and acknowledged before the tax return is filed and within the statutory deadline. Used carefully, the rules look like a powerful way to smooth out irregular saving patterns and give late-career balances a meaningful lift while trimming tax along the way.
