Give your super a boost


It’s no secret that nobody likes paying tax.


But did you know that you could potentially be able to reduce the amount of tax you pay this financial year by boosting your super?

Just do it before 4pm (AEST) 26 June 2025.

Contribute now

Why make a personal contribution


Less tax, more invested in super

Personal super contributions can be tax deductible – which could allow you to boost your super and potentially reduce the tax you pay.1


Growth over time

Returns on your super contributions can go on to earn more returns, creating a cycle of growth that can boost your super balance over time.


A little extra from the government

Depending on how much you earn, you could get an extra boost to your super account from the government of up to $500.2

Making a personal contribution

Making a personal contribution to your Mercer Super account before the end of the financial year is easy.

All you’ll need is the Mercer Super Biller code and your unique reference number. You can find this by logging into your account and heading to the ‘Personal details’ section.

Using those details, make your contribution via BPAY® before 4pm (AEST) 26 June 2025. This will allow time for the contribution to be received and processed before 30 June 2025.

It's important to be aware that there are limits to how much you can add to your super without tax implications – these are known as 'contribution caps'. Learn more about personal contributions caps here.

Claiming your tax deduction

Complete the Notice of Intent form,3 save it and send it to us – it’s really that easy. There are two ways for you to send us the form:

  • Head to the ‘Contact us’ tab in your online account, then select ‘Contribution’ as the topic and attach the form.
  • Send your form directly to us at MST@Mercer.com.

Within 3-4 business days we’ll let you know that we’ve received and processed your form. You can then go ahead and claim a deduction on your tax return for the 2024/2025 tax year. If you have an accountant who does your tax return, they’ll know how to help with this.

 

A little today could mean a lot tomorrow

Our Retirement Income Simulator can help you estimate what your retirement income could look like, how long it might last, and how even a little extra today could mean a significant increase in your balance over the long-term.

Example

This example was prepared using Mercer’s Retirement Income Simulator on 24 March 2025. The amounts projected are estimates provided by the Simulator and are not guaranteed.4

Cooper is 25 years old, with a super balance of $37,500 and earns $78,000 per year. He decides that he’s going to make an extra one-off $250 personal contribution each year – that’s only 0.3% of his annual salary. He will then claim a tax deduction for his contribution, and save $80 in income tax.

Once Cooper reaches age 65 and is ready to retire, the Retirement Income Simulator estimates that he’ll have a potential balance of $793,524.

If he hadn’t made the extra $250 contribution each year, the Retirement Income Simulator estimates his balance would only be $775,993 – a difference of $17,531.

Over the 40-year period he could potentially save up to $3,200 in income tax.

Simulate my retirement

Top tax-time super tips webinar

Watch a recording of our most recent webinar to hear our tips on topics including, how your super is taxed, how extra contributions could help supercharge your super and other ways you could help boost your super.

Duration: 42 minutes
Recorded: 22 May 2025

Watch Recording

Want some extra help with your super?


From 24/7 digital advice to over the phone advice about your Mercer Super account, we’re ready to support you at no extra cost – explore your options.

Due to the time of year, it may take longer than normal for you to speak with a financial adviser. We recommend booking in early. Our digital advice is available 24/7 with no wait time.

Ready to supercharge your super?


Check this page regularly for updates on contribution cut-off dates, to ensure your contribution makes it in for this financial year.

Click ‘contribute now’ to find your BPAY® details in the ‘Personal details’ section of your online account and get boosting today.

Contribute now

Frequently asked questions

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  • What should I consider before adding to my super?

    Before adding to your super you should consider:

    • In order to accept your contribution, we need your Tax File Number (TFN). To provide your TFN, or check that we’ve got it, log into your account and head to the ‘Personal Details’ section.
    • If you've gone over the concessional (pre-tax) contribution cap of $30,000 and can't use previous years under the 'carry forward rule' you may not be able to claim a tax-deduction.
    • The current non-concessional (after-tax) contribution cap is $120,000 each financial year (this cap is $0 if your total super balance was $1,900,000 or over at the end of the 2023/2024 financial year).
    • If you’re under 75 years of age and eligible, you may be able to contribute up to $360,000 under the 'bring forward rule'.
    • As a Mercer Super member, you have access to personal financial advice about your Mercer Super account at no extra cost. You can register to speak with a Mercer financial adviser by filling out the callback form.


    Due to the time of year, it may take longer than normal for you to speak with a financial adviser. We recommend booking in early. Our digital advice is available 24/7 with no wait time.

  • Why do I claim a tax deduction for personal contribution?

    When you first make a personal contribution to your super, it’s considered an after-tax (also known as a ‘non-concessional’) contribution and it’s not subject to tax. When you submit a Notice of Intent form to us, we convert your after-tax contribution, to a pre-tax (also known as a ‘concessional’) contribution, and apply a tax rate of 15% to it.

    Following this conversion from post-tax to pre-tax, you’re then able to claim the contribution as a tax deduction.

  • Can I deduct tax for FY2024/25 personal contribution?

    Any personal contributions you’ve made in the FY 2024/25 year may be eligible for a tax deduction, if you do not contribute over the concessional contribution cap of $30,000 for the financial year.*

    To claim a tax deduction, you’ll need to complete a ‘Notice of intent to claim’ form. This form should be returned to us no later than the day you lodge your 2024/25 financial year tax return, or by 30 June 2026 – whichever comes first.

    * If your total super balance is below $500,000 at the start of the financial year you may be able to claim a deduction for contributions above the annual $30,000 concessional contributions cap by using any unused concessional cap amounts from previous five financial years under the 'carry forward rule'.

  • Can I deduct personal contributions made before FY2024/25?

    If you made after-tax contributions in the 2023/24 financial year these may be eligible for a tax deduction, if:

    • You do not breach the concessional contribution cap of $30,000 for the financial year**, and
    • you have not already filed your 2023/24 financial year tax return.


    If you meet this criteria, you’ll need to complete a ‘Notice of intent to claim’ form. This form must be returned to us no later than 30 June 2025. If the form is received after 30 June 2025, we’re legally unable to process it.

    Any personal contributions you’ve made prior to the 2023/2024 financial year will no longer be eligible for a tax deduction.

    ** Note: If your total super balance is below $500,000 at the start of the financial year you may be able to claim a deduction for contributions above the annual $30,000 concessional contributions cap by using unused concessional cap amounts from the five previous years financial years under the 'carry forward rule'.

  • Where do I send the Notice of Intent form?

    There are two ways for you to send in the Notice of Intent form:

    • Head to the ‘Contact us’ tab in your online account, then select ‘Contribution’ as the topic and attach the form.
    • Send your form directly to us at MST@Mercer.com.


    Within 3-4 business days we’ll let you know that we’ve received and processed your form. You can then go ahead and claim a deduction on your tax return. If you have an accountant who does your tax return, they will know how to help with this.

  • How do I use BPAY®?

    As each financial institution is different, we’re unable to provide detailed instructions on how to use BPAY.

    For further information, please contact your financial institution directly.

  • Do I need my Tax File Number to make personal contributions?

    To accept your contribution, we need your Tax File Number (TFN). To provide your TFN, or check that we’ve got it, log into your account and head to the ‘Personal Details’ section .

  • I can’t log in to Member Online or activate my account?

    For help with logging into Member Online or activating your account, head to our Member Online support page.

Need more help? We’ve got you covered.

Have questions about Mercer Super or need more information about becoming a member? We’d love to hear from you.

Member Online Support

Member Online support

Log in to your account for more information or to submit an online enquiry.

Contact Our Helpline

Contact our Helpline

Visit the member support page or call 1800 682 525, Monday to Friday, 8am-7pm (AEST/ AEDT).


# The competition promoter is Mercer Outsourcing (Australia) Pty Ltd.  Address: Level 22, Tower One 100 Barangaroo Avenue, SYDNEY, NSW, 2000, AUSTRALIA Tel: 03 8306 0900. For full details of the competition terms and conditions, please visit our website.  Mercer Financial Advisers are authorised representatives of Mercer Financial Advice (Australia) Pty Ltd (MFAAPL) ABN 76 153 168 293, Australian Financial Services Licence 411766. The trustee has appointed MFAAPL to provide financial advice services for members of the Mercer Super Trust.

1. There are annual limits on how much you can contribute into your superannuation. If these are exceeded there may be tax implications. Find out more on our website.

2. The super co-contribution has an eligibility criteria that applies. Find out more on the Australian Taxation Office website.

3. The Notice of Intent form should be completed prior to any withdrawals or rollovers as this may reduce available deduction. The final date to submit your Notice of Intent form is either no later than the day you lodge your 2024/25 financial year tax return, or by 30 June 2026 – whichever date comes first.

By submitting the Notice of Intent form, you are requesting that we convert your after-tax (non-concessional) personal contributions into pre-tax (concessional) personal contributions. There are limits on how much you can contribute each year without tax implications – these are known as contribution caps. You can find more information on our website.

4. This example was prepared using Mercer’s Retirement Income Simulator (the Simulator) on 24 March 2025. The amounts projected are estimates provided by the Simulator and are not guaranteed.

The parameters input was for a 25-year-old male with a $37,500 super balance, a $78,000 per year salary and an intended retirement age of 65.

The Simulator illustrates the possible effect variable factors such as superannuation contributions, investment returns, and retirement income may have on your super balance over time and how long it may last.

It uses default assumptions about future investment returns and inflation, which are considered reasonable at the current date based on long-term economic modelling (by Mercer Investment Consulting). The investment option chosen was the default variable ‘Lifecycle’ investment option. While these assumptions can be modified by the user, for this example they were not. You can learn more about these assumptions by visiting the Simulator.

The Simulator assumes Cooper’s super is invested in a standard accumulation fund, and grows with contributions (from him, his employer and Government contributions) and investment earnings over his working life. The Simulator provides for the deduction of all fees and costs, insurance premiums and taxes from his super balance.

The results provided are in today's dollar value which have been calculated by deflating the projected dollar amounts based on the assumed rate of wage inflation up to retirement age, and price inflation after retirement as described on the assumptions panel within the Simulator.

Issued by Mercer Superannuation (Australia) Limited (MSAL) ABN 79 004 717 533, Australian Financial Services Licence 235906, the trustee of the Mercer Super Trust ABN 19 905 422 981(‘Mercer Super’). Any advice provided is of a general nature and does not take into account your objectives, financial situation or needs. Before acting on any advice we recommend you obtain your own financial advice and consider the Product Disclosure Statement and Financial Services Guide available at mercersuper.com.au. The product’s Target Market Determination setting out the class of people for whom the product may be suitable can be found at mercersuper.com.au/tmd.

Any information on tax or references to legislation in this document is based on our interpretation of current laws which are subject to change. We recommend you obtain your own tax or other professional advice when considering the application and impact of tax laws or other laws that may affect you. No warranty as to the accuracy or completeness of this information is given and no responsibility is accepted by Mercer or any of its related entities for any loss or damage arising from reliance on the information.

We strongly recommend that you obtain advice from a licensed or appropriately authorised financial or tax adviser about how tax laws affect you, especially if you are considering making large contributions or retiring because the tax treatment of super is complex and may change at any time.

Our priority is to keep you informed about the changing superannuation landscape. For up-to-date financial planning tools and investment option resources, visit the Contact Us page at www.mercersuper.com.au. If you are considering making any changes to your superannuation, we recommend seeking advice from a licensed, or appropriately authorised financial adviser before taking action. As a Mercer Super Trust member, you have access to limited financial advice at no extra cost.

Mercer Financial Advisers are authorised representatives of Mercer Financial Advice (Australia) Pty Ltd (MFAAPL) ABN 76 153 168 293, Australian Financial Services Licence 411766. The trustee has appointed MFAAPL to provide financial advice services for members of the Mercer Super Trust.

‘MERCER’ is an Australian registered trademark of Mercer (Australia) Pty Ltd ABN 32 005 315 917. © 2025 Mercer. All rights reserved.