Notice of Intent to Claim: ATO Super Deduction Guide

If you’ve been putting extra money into your super fund, there’s a good chance you’re leaving a tax deduction on the table. Australian workers can claim personal super contributions as a tax deduction, but only if they notify their fund before lodging their return — and many miss the window without realising it.

Form Code: NAT 71121 · Issued By: Australian Taxation Office · File Size: 378KB PDF · Purpose: Personal super contributions deduction · Section Reference: 290-170

What is a notice of intent to claim?

A notice of intent to claim is a formal declaration you send to your super fund telling them you plan to deduct personal super contributions from your taxable income. Without this notice, those after-tax contributions stay non-concessional — meaning you miss out on the tax break. The ATO issues the official form (NAT 71121) under section 290-170 of the Income Tax Assessment Act, and you can also submit a signed letter with the required details if it meets their format rules.

Definition from ATO

The Australian Taxation Office requires individuals to give a notice of intent to claim a deduction for personal super contributions to their super fund on or before whichever of the following days occurs earliest: the day they lodge their tax return, or the last day of the income year after contributions were made. The notice must be in writing and include your fund’s name, ABN, member account number, and USI if known.

“You must give a notice of intent to claim a deduction to your super fund on or before whichever of the following days occurs earliest.”

Australian Taxation Office (Government authority issuing official form instructions)

Section 290-170 details

The governing section 290-170 notice covers the legal framework for deducting personal super contributions. Per the Resolution Life guide to section 290-170, the form requirements include specifying the financial year of contributions, total personal contributions amount, and eligible deduction amount in whole dollars only — cents are not accepted and remain non-concessional.

When should I complete this notice of intent?

Timing matters more than most people realise. The ATO sets a hard deadline: your notice must reach your super fund before you lodge your tax return, or by 30 June of the following financial year — whichever comes first. Contributions count when the fund receives them, not when you initiate the bank transfer, so factor in processing delays.

Deadlines before June 30

If you want the deduction to apply to the current financial year, submit your notice well before 30 June and ensure your contribution clears before the deadline. Many taxpayers lodge their return months later, but the notice itself needs to be in your fund’s hands before that lodgment date. Missing this window means the deduction shifts to the next tax year, which may not align with your planning.

Fund acknowledgment required

Your super fund must acknowledge receipt of a valid notice in writing before you can claim the deduction on your tax return. The acknowledgment must include receipt dates, your member details, and your current intended deduction amount. Once acknowledged, the notice cannot be revoked — though you can apply to reduce the claimed amount within the allowed timeframes.

The implication for workers who miss the acknowledgment step is that they lose the deduction even if they submitted the notice on time.

Is it worth claiming super contributions?

For many Australians, yes — particularly those on the 37% or 45% marginal tax rate. Every dollar you claim as a deduction reduces your taxable income, and the contribution itself is taxed at just 15% inside super. That spread can translate to thousands saved annually, depending on how much you can afford to divert from take-home pay into your fund.

Tax benefits calculation

Clean Slate explains the mechanics clearly: tax-deductible super contributions reduce your taxable income while boosting long-term retirement savings. If you’re on the 37% marginal rate and claim a $10,000 deduction, your taxable income drops by that amount — saving roughly $3,700 in income tax. The $10,000 lands in your super account but faces only the 15% contributions tax, which amounts to $1,500. Net benefit: approximately $2,200 compared to keeping the money in a savings account subject to your marginal rate.

Contribution caps

The concessional contributions cap for 2025–26 is $30,000, which bundles together employer Super Guarantee, salary sacrifice, and any deductible personal contributions. The non-concessional cap sits at $120,000 for the same period. Exceeding the concessional cap triggers additional taxes, so coordinating your notice with employer contributions is essential to avoid penalties.

The pattern here is that employer SG contributions silently eat into headroom under the $30,000 cap, making personal deductible contributions more likely to breach the limit than workers expect.

Can you amend a notice of intent to claim?

Yes, but only to reduce the amount, never to increase it. If you’ve already claimed a deduction and need to adjust it downward, you can lodge a variation notice with your fund before lodging your tax return — or by 30 June of the following financial year if you haven’t yet filed. You cannot revoke the notice entirely, but you can scale it back if your financial situation changes.

Vary deduction amount

The variation process mirrors the original notice: complete the same ATO form or write a letter with updated figures and submit it to your fund. The fund will issue a new acknowledgment reflecting the reduced amount. Per the ATO instructions, variation notices allow reducing a previously claimed deduction amount if before lodging tax return and by 30 June of the following financial year.

Amended return process

If you’ve already lodged your tax return with the original deduction, you’ll need to file an amended return using the appropriate ATO process. Keep copies of all notices and acknowledgments as proof — funds like HESTA advise completing the ATO notice of intent form and posting or emailing it to them for their records.

What this means for workers who submit late is that they forfeit the deduction for the original financial year with no administrative remedy available from the ATO.

What is a Section 290-170 notice?

Section 290-170 of the Income Tax Assessment Act is the specific legal provision that authorises individuals to claim deductions for personal super contributions. The ATO Notice of Intent form is the administrative tool that operationalises this section — it translates the legal right into a practical process that both members and funds use.

Legal reference

The Resolution Life guide notes that the ATO provides guidance under section 290-170 of Income Tax for the Notice process. The ATO’s official instructions confirm that valid notice formats include the official form, a member letter with specific details and declaration, or an approved electronic form. The legal framework applies uniformly across Australia with no state variations.

Form requirements

To be valid, your notice must include your fund’s ABN, your member account number, the USI if you know it, and the specific dollar amount you’re claiming as a deduction. You must also declare the financial year the contributions relate to and sign and date the form. Fund details are verifiable via ATO Online, your member statements, or the ATO’s Super Fund Lookup tool.

The catch for workers who ignore the non-concessional cent rule is that any cents in the deduction amount automatically remain non-deductible, reducing the claimed amount’s tax benefit.

Step-by-step guide to lodging your notice

Following the ATO process methodically helps avoid the common pitfalls that invalidate deductions. Each step builds on the previous one, and skipping the fund acknowledgment step is the most frequent error.

1. Gather fund details: Locate your super fund’s ABN, your member account number, and USI. Verify these via ATO Online or Super Fund Lookup if needed.
2. Download or prepare the form: Get ATO form NAT 71121 from ato.gov.au, or write a letter containing the required details, your signature, and date.
3. Calculate your deduction amount: Enter whole dollars only. Include the financial year, total personal contributions, and eligible deduction amount.
4. Submit to your super fund: Post or email the notice to your fund. Keep a copy for your records. Some funds like LegalSuper offer online notice forms on their websites.
5. Receive written acknowledgment: Wait for your fund to confirm receipt in writing. This letter is required before you can claim on your tax return.
6. Claim on your tax return: Once you receive the acknowledgment, enter the deduction amount when lodging your personal income tax return.

What fund members say

Super funds themselves provide practical guidance beyond the ATO’s official instructions. Several funds have published their own step-by-step guides that complement the regulatory framework.

“Tax-deductible super contributions reduce your taxable income while boosting long-term retirement savings.”

Clean Slate (Financial blog covering superannuation strategies)

“Complete the ATO Notice of intent form and post or email to us.”

LegalSuper (Industry super fund for legal sector employees)

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