Super Calculator

Carry-Forward Super Contributions

How to use unused concessional cap space from the last 5 years to catch up on your super.

Updated March 20266 min read
Based on published ATO ratesUpdated for 2025–26

TSB threshold

<$500,000

Lookback period

5 years

Current CC cap

$30,000/yr

Available from

2018–19

How carry-forward works

The carry-forward rule allows you to use unused concessional cap space from the previous 5 financial years to make additional before-tax contributions in the current year. This means your effective concessional cap can be significantly higher than the standard $30,000.

For example, if you only contributed $20,000 in concessional contributions last year (against the $30,000 cap), you have $10,000 of unused cap space that can be carried forward. If you had similar unused amounts across multiple years, your total available cap could be substantially higher.

Eligibility requirements

To use carry-forward contributions, you must meet two conditions:

  • Total super balance under $500,000 — your TSB at 30 June of the prior financial year must be below $500,000 (across all super funds)
  • Unused cap space available — you must have concessional cap amounts from the last 5 years that you didn't fully use

Balance check timing

The $500,000 balance check uses your TSB at 30 June of the prior financial year. For 2025–26 contributions, it's your balance at 30 June 2025 that matters, not your current balance.

5-year carry-forward timeline

For the 2025–26 financial year, you can access unused cap space from the following years:

Financial yearCC capStatus
2020–21$25,000Expired
2021–22$27,500Available (oldest)
2022–23$27,500Available
2023–24$27,500Available
2024–25$30,000Available
2025–26$30,000Current year

Unused cap from 2018–19 and 2019–20 has expired for 2025–26 contributions. The 2020–21 unused cap expired at the end of 2025–26.

Worked example

Sarah earns $100,000 and has a total super balance of $320,000. Her employer pays 12% SG ($12,000/year). She hasn't made any additional concessional contributions in recent years. Here is her unused cap space:

YearCapSG contributedUnused
2021–22$27,500$10,000$17,500
2022–23$27,500$10,500$17,000
2023–24$27,500$11,000$16,500
2024–25$30,000$11,500$18,500

Sarah has $69,500 in unused carry-forward cap space, plus the current year's $30,000 cap = a total available concessional cap of $99,500 for 2025–26. After her $12,000 employer SG, she could make up to $87,500 in additional concessional contributions this year.

Tax benefit

If Sarah is in the 30% tax bracket (including Medicare levy of 2%), contributing an extra $20,000 via salary sacrifice would save her approximately $3,000 in tax ($20,000 × 15% difference). The money also grows tax-efficiently inside super.

Carry-forward calculator

Enter your contribution history and super balance to estimate your available carry-forward cap space:

Carry-forward strategies

Here are some common scenarios where the carry-forward rule can be particularly valuable:

After a career break

If you've taken time off work (parental leave, study, travel), you likely have years of significant unused cap space. When you return to a higher income, you can use carry-forward to catch up.

Bonus or windfall year

If you receive a large bonus, commissions, or windfall, you can redirect more into super using the carry-forward cap to reduce your tax bill in a high-income year.

Capital gains event

If you've sold an investment property or shares and have a significant capital gain, making a large deductible super contribution using carry-forward can offset the capital gain and reduce your overall tax.

Frequently Asked Questions

Assumptions last updated: March 2026