Why "last-minute" actually matters in tax planning
Most Australian tax deductions only count if the expense was incurred on or before 30 June of the financial year. Once the clock ticks over to 1 July, the same dollar moves into the next year's return.
If you're reading this in early-to-mid June 2026, there are still several deduction-generating actions you can take in the next few weeks that will land squarely in your FY2025–26 return.
This guide is a triaged checklist — the highest-ROI moves first, the housekeeping ones last.
The 6 highest-ROI moves before 30 June 2026
1. Top up your concessional super (up to $30,000 cap)
Concessional contributions reduce your taxable income at the contribution amount × your marginal tax rate. For a salaried employee at the 30% Stage 3 bracket, every $1,000 contributed saves $300 in tax — and stays in your super for compounding.
FY2025–26 cap: $30,000 (employer SG + salary sacrifice + personal deductible contributions combined).
If your total super balance was under $500,000 on 30 June 2025, you can also use unused cap from the previous 5 years (carry-forward concessional contributions). Check your unused cap in myGov → ATO → Super → Information → Carry forward concessional contributions before contributing.
Timing trap: Contributions must be received by your fund before 30 June, not just initiated. Allow 3–5 business days. After mid-June, BPAY may be too late; consider direct deposit via the fund's online portal.
To claim the deduction on personal contributions, you must submit a Notice of intent to claim to your super fund before lodging your FY2025–26 return.
2. Pre-pay deductible work expenses
If you're a salaried employee, you can prepay up to 12 months of deductible expenses and claim the full amount in FY2025–26. The most common candidates:
- Professional subscriptions (e.g. CPA, Engineers Australia, Law Society) — renew now for the year ahead
- Income protection insurance premiums (premiums are tax deductible; pre-pay 12 months)
- Self-education course fees (if work-related)
- Trade-journal / industry publication subscriptions
This is a timing-shift, not free money — but it brings the deduction forward by 12 months, useful if you expect to be in a lower tax bracket next year.
3. Make tax-deductible donations to a DGR
Donations of $2 or more to a Deductible Gift Recipient (DGR) are tax deductible. The deduction reduces your taxable income, so a $500 donation at a 32% marginal rate effectively costs you $340 after the refund.
Check the recipient is a DGR at abr.business.gov.au before donating — many charities are not DGR-endorsed and the donation won't be deductible.
Keep the receipt or tax-receipt email (DGR-endorsed organisations are required to issue one).
4. Capital losses — sell loss-making investments before 30 June
If you have unrealised capital losses on shares or crypto, selling before 30 June crystallises the loss against any FY2025–26 capital gains.
The wash-sale rule disallows the loss if you buy back the same asset shortly after — the ATO doesn't publish a precise window but 30 days is the conservative interpretation.
If you have no FY2025–26 capital gains, the losses still carry forward indefinitely — useful in any future year you do realise a gain.
5. Bring forward FY2026–27 expenses you'd incur anyway
Deductible-expense timing isn't always about the calendar — it's about which financial year captures the deduction. If you're going to buy a deductible item in the first weeks of July anyway, consider whether buying in late June makes more sense for cash-flow or tax planning.
Examples:
- Professional development course
- Home-office equipment you need (claimable as either immediate deduction up to $300 or depreciating asset over its effective life)
- Industry tools / equipment
6. Reconcile your receipt records
The single highest-ROI 30-minute task most people skip: walk through the past 12 months of expenses and identify what you forgot to capture.
Common forgotten categories:
- Phone / internet bills (work-use portion)
- WFH electricity / gas (if not using the fixed-rate method)
- Tax-related expenses (last year's accountant / tax-agent fee is deductible this year)
- Investment management fees (subscription to share-analysis platforms etc.)
- Charity micro-donations via online checkout
Use AusTax AI's email-forward + bulk-upload flow to capture these in one sitting — most people add 5–15% to their deduction total this way.
What doesn't help (despite popular myth)
- Buying a new car in June to "claim the depreciation" — depreciation is spread across the asset's effective life, so the June-vs-July deduction difference for FY2025–26 is tiny
- Negative-gearing-on-purpose to reduce tax — this works mathematically but only if you'd buy the investment anyway; the deduction never exceeds your actual loss
- Investing in tax-effective schemes marketed in June — high-yield-but-deductible offers in late June are a major ATO Part IVA / scheme-promoter target. Genuine tax planning happens year-round, not in June panic-buying
If your return is complex, hand it off
Reading this checklist and realising you need help executing it across CGT events / multiple properties / business income / foreign accounts? a registered tax agent (see the directory) See our decision guide if you're not sure which path fits.
The 30 June checklist in 5 lines
- Top up concessional super (before mid-June for processing time)
- Pre-pay deductible work expenses if your cash flow allows
- Donate to DGRs you care about (any amount over $2 is deductible)
- Crystallise capital losses against any capital gains realised this year
- Walk through your receipts and bulk-upload anything you missed
Do those five things before 30 June and your FY2025–26 return will be in materially better shape than the average self-lodger.
AI analysis on this page is general information only, not tax advice. For lodgement of your return, self-lodge via the ATO's myTax or engage a TPB Registered Tax Agent.
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*Disclaimer: This is general information only and does not constitute personal tax advice. Consult a registered tax agent for advice tailored to your specific situation. Always verify against the latest ATO guidelines at ato.gov.au.*