Capital gains tax often feels like a one way conversation with the Australian Taxation Office, until you realise the timing of your moves can be the deciding factor between paying a hefty bill and keeping more of your windfall in your pocket.

In this article, we peel back the curtain on how a few well timed decisions can quietly reshape your tax outcome.

If you’re sitting on a property with a big unrealised gain, the timing of your sale could be the difference between a hefty CGT bill and keeping tens of thousands more in your pocket.

TIMING TACTIC 1

The ‘financial year flip’ for property
Sometimes the smartest move isn’t whether to sell, but when to sell, especially if your income is about to change.

The scenario
You’re a high income earner ($250,000+ salary) planning to take a career break or retire in 18 months. You’ve got an investment property with a $300,000 unrealised gain.

OPTION A
Sell now (2026 financial year)

• Taxable gain after 50% discount: $150,000
• Marginal tax rate: 45% + 2% Medicare Levy = 47%
• Tax payable: $70,500

OPTION B
Sell after retirement (2027 financial year)

• Expected taxable income: $80,000 (part year salary + super drawdown)
• Marginal tax rate on the gain: 32.5% + 2% = 34.5%
• Tax payable: $51,750

Saving
$18,750 by delaying the contract date by 14 months.

Pro tip for property investors
If you’re planning to sell multiple properties, consider staggering contracts across two or more financial years to avoid pushing yourself into a higher marginal tax bracket. Selling two properties with $200,000 discounted gains in the same year could push a $150,000 earner into the 45% bracket. Split them, and both gains could be taxed at 32.5% or lower.

TIMING TACTIC 2

The main residence exemption overlap
Here’s where property gets unique compared to other assets. The main residence exemption can partially or fully eliminate CGT, even on a property you once rented out.

The rule
If a property was your main residence at some point, you can claim a partial exemption based on the proportion of time it was your home vs an investment.

Worked example
You bought a home in 2014, lived in it for 4 years, then moved out and rented it for 8 years before selling in 2026.

Gross gain: $500,000.

• Total ownership: 12 years
• Main residence period: 4 years + final 6 years (the “absence rule”) = 10 years exempt
• Taxable period: 2 years (the 2 years beyond the 6 year absence rule)
• Exempt proportion: 10/12 = 83.3%
• Taxable proportion: 2/12 = 16.7%

Calculation:

• Gross gain: $500,000
• Taxable portion: $500,000 × 16.7% = $83,500
• Less 50% discount (held 12+ years): $41,750 taxable gain
• Tax at 37% marginal rate: $15,448

Without the main residence exemption, tax would have been $111,000 (50% discount only).

Saving: $95,552.

The 6 year absence rule
You can treat a property as your main residence for up to 6 years after you move out, as long as you don’t treat another property as your main residence during that time. This is one of the most underused CGT strategies in Australia.

Trap
If you move back into the property for even a day after the 6 year period expires, the clock resets and you get another 6 years of exemption from that new move out date.

Plan your moves carefully.

TIMING TACTIC 3

The downsizer contribution arbitrage
Selling the family home?
If you’re 55 or older, you can contribute up to $300,000 per person ($600,000 per couple) from the sale proceeds into super as a downsizer contribution – tax free, regardless of your super balance or work status.

Why this matters for CGT
The family home is already CGT exempt, so there’s no direct CGT saving.

Here’s the crossover play:

1. Sell the family home (CGT free).
2. Contribute $600,000 into super (tax free downsizer contribution).
3. Use the freed up cash flow to purchase an investment property inside super (via SMSF) or personally.
4. If purchased via SMSF in pension phase, future rental income and capital gains are tax free.

The long game math

• Investment property grows from $600,000 to $1.2 million over 15 years.
• Sold inside SMSF pension phase: $0 CGT.
• Sold personally (at 45% marginal rate, after 50% discount): ~$135,000 in tax.

Saving
$135,000+ by routing the reinvestment through super.

Eligibility checklist

• You’re 55 or older (downsizer age threshold dropped from 60 to 55 in 2022 and remains in 2026).
• The home was owned for at least 10 years.
• It qualifies for the main residence exemption (full or partial).
• You haven’t made a downsizer contribution before (or you’re using your second chance if eligible under 2025 changes).

The crossover
Where property and personal planning collide
Here’s where most advisers drop the ball. They treat investment property CGT and personal tax as separate universes. They’re not.

SCENARIO 1
The family trust distribution
Your discretionary trust sells a rental property with a $600,000 gain. After the 50% discount, the taxable gain is $300,000. Instead of streaming it all to you (45% marginal rate), the trustee distributes:

• $150,000 to you (45% marginal) = $67,500 tax
• $150,000 to your adult child (no other income, 0% marginal) = $0 tax

Combined tax
$67,500 vs $135,000 if distributed solely to you.

Saving
$67,500.

SCENARIO 2
The SMSF property swap
Your SMSF (in pension phase) sells an investment property it rented to a third party. The gain is tax free because the SMSF is in pension phase (0% tax on earnings). Meanwhile, you personally buy a replacement property with the proceeds, claiming depreciation and negative gearing losses against your salary.

This is the ultimate property consumer crossover: tax free capital gain in super, deductible losses personally.

Compliance check
The SMSF must meet the sole purpose test, and the property can’t be purchased from or rented to a related party (unless it’s business real property, and residential rentals are not).

THE TRAP

What not to do with property
Don’t sign the contract too early
Let’s say you agreed to sell an investment property on 10 March 2026. You originally purchased it on 12 March 2025- just two days short of the 12 month threshold. As a result, the $350,000 is fully taxable, costing you an extra $157,500 in tax (at a 45% marginal rate).

The fix
If you’re close to the 12 month mark, negotiate a later contract date or insert a condition precedent that pushes the contract formation date past the threshold. Remember: it’s the contract date, not settlement, that matters.

Don’t assume the 6 year absence rule is automatic
You must elect to treat the property as your main residence in your tax return for the years you’re absent. If you forget to claim it in Year 1 of your absence, the ATO may argue you’ve lost the exemption for that period. Keep records of where you lived, electoral roll enrolment and utility bills to substantiate your claim.

Don’t ignore the political risk.
The ACTU and several think tanks have formally proposed reducing the 50% CGT discount to 25% or replacing it with indexation ahead of the 2026 -27 Budget next month.

While nothing has passed yet, if you’re sitting on a large unrealised property gain and the policy debate intensifies, it may be worth crystallising the gain now rather than gambling on the status quo.