Capital gains tax in Tasmania works exactly the same way it does everywhere else in Australia. There is no separate state tax on capital gains. When you sell an asset for more than it cost you, the profit is added to your income for the year and taxed at your marginal rate under federal rules administered by the Australian Taxation Office.
How the Tax Is Calculated
Capital gains tax isn’t really a tax of its own. It’s part of your income tax. Sell an asset at a profit, and the net gain sits on top of your salary and other income for that financial year. You then pay tax on the whole amount at whatever marginal rate applies.
For the 2025–26 financial year, the individual tax rates for Australian residents are:
- $0 to $18,200: no tax
- $18,201 to $45,000: 16 cents per dollar over $18,200
- $45,001 to $135,000: $4,288 plus 30 cents per dollar over $45,000
- $135,001 to $190,000: $31,288 plus 37 cents per dollar over $135,000
- $190,001 and above: $51,638 plus 45 cents per dollar over $190,000
The 2% Medicare levy applies on top.1Australian Taxation Office. Tax Rates – Australian Resident A big gain can push you into a higher bracket for the year. Someone earning $80,000 in wages who realises a $60,000 net capital gain is taxed as though they earned $140,000, with part of the gain falling into the 37% bracket.
Which Assets Are Caught
The Income Tax Assessment Act 1997 defines a CGT asset broadly. For most Tasmanian taxpayers the common triggers are selling an investment property, disposing of shares, or selling cryptocurrency.2Australian Taxation Office. What Is Capital Gains Tax Business goodwill, contractual rights, and interests in trusts or partnerships are also included.
Several categories sit outside CGT. Your car or motorcycle is exempt regardless of price. Personal-use items such as furniture, appliances, and electronics are exempt if you acquired them for $10,000 or less; above that, gains are taxable but losses are ignored. Collectables like artwork, jewellery, antiques, rare coins, and stamps are exempt if acquired for $500 or less, and losses on collectables can only offset gains on other collectables.3Australian Taxation Office. List of CGT Assets and Exemptions
Anything acquired before 20 September 1985, the day the CGT regime started, is completely exempt.
Selling Your Home
Your main residence is generally exempt from CGT, and the exemption applies automatically as long as the property was your home for the whole time you owned it.3Australian Taxation Office. List of CGT Assets and Exemptions
Things change if you’ve used part of the home to earn income. Renting out a room, running a business from a dedicated home office, or hosting on a short-stay platform triggers a partial exemption. You lose the CGT-free treatment on the portion of the floor area used to earn income, apportioned by time. The ATO uses an interest deductibility test: if you could have claimed a deduction for mortgage interest on that portion, that same portion is subject to CGT.4Australian Taxation Office. Using Your Home for Rental or Business
The Six-Year Absence Rule
If you move out and rent the property, you can still treat it as your main residence for CGT purposes for up to six years. This is useful if you relocate temporarily for work or move interstate. You don’t need to do anything special to claim it, but you can’t treat another property as your main residence during the same period.5Australian Taxation Office. Treating Former Home as Main Residence
Move back in before six years is up and the clock resets, so each new absence gets its own six-year window. Rent it out for longer than six years in one stretch and CGT applies to the time beyond that limit. If you leave the property vacant instead of renting it, there is no time limit at all.
The 50% Discount for Assets Held Over 12 Months
Hold a CGT asset for at least 12 months before selling and you can reduce the capital gain by half. This is the single most valuable concession for most individual investors. Work out your gain, subtract any capital losses, then halve what remains. Only the discounted amount is added to your income.6Australian Taxation Office. CGT Discount
Trusts also get the 50% discount. Complying superannuation funds get one-third. Companies get no discount at all.
Foreign residents face tighter rules. If you were a foreign resident for the entire ownership period and acquired the asset after 8 May 2012, you get no discount. If you were an Australian resident for part of the ownership period, an apportioned discount may apply.7Australian Taxation Office. CGT Discount for Foreign Residents
Working Out the Gain
The formula is simple: sale proceeds minus cost base. A positive result is a capital gain; a negative result is a capital loss.
The cost base is more than the purchase price. It also includes incidental costs such as stamp duty, legal fees, valuer fees, and agent commissions on both purchase and sale; ownership costs like rates, land tax, insurance, and non-deductible loan interest (only where you haven’t already claimed them as tax deductions); capital improvements such as extensions or permanent additions; and legal costs of preserving or defending your title. Every dollar you can legitimately add to the cost base reduces your taxable gain, which is why records matter.8Australian Taxation Office. Cost Base of Assets Keep purchase contracts, settlement statements, and receipts for the whole time you own the asset, plus five years after you sell.9Australian Taxation Office. Records of Capital Gains or Losses From Capital Gains Tax Assets
One trap catches family transfers. If you give an asset away, transfer it to a relative for less than market value, or sell in a non-arm’s-length deal, the ATO treats the market value at the time as your sale proceeds regardless of what you actually received.10Australian Taxation Office. Capital Proceeds From Disposing of Assets
Offsetting Gains With Capital Losses
Capital losses are your first line of defence. If you sold one asset at a profit and another at a loss in the same year, subtract the loss from the gain before applying the 50% discount. The order matters: losses first, then discount. Get that sequence wrong and you’ll pay more than you owe.11Australian Taxation Office. 18 Capital Gains 2026
If losses exceed gains, you can’t deduct the excess from your salary. The unused loss carries forward indefinitely against future capital gains. Two restrictions catch people out: losses on personal-use assets are always disregarded, and losses on collectables can only offset gains on other collectables.
Inherited Property
No CGT is triggered when property passes to a beneficiary on death. The tax event comes when the beneficiary later sells. If the property was the deceased’s main residence and wasn’t earning rental income at the time of death, the beneficiary can sell CGT-free provided settlement happens within two years of the date of death. The same window applies if the deceased acquired the property before 20 September 1985.12Australian Taxation Office. Extensions to the 2-Year Ownership Period
Miss the two-year deadline and CGT applies on the gain from the date of death onwards. The ATO can grant automatic extensions of up to 18 months where delays came from legal challenges to the will, complex estate administration, or other factors beyond your control. Waiting for the market to lift, or holding on to renovate before sale, doesn’t qualify.
If You’re Selling a Business Asset
Tasmanian small business owners have access to four extra concessions when selling an active business asset:
- The 15-year exemption disregards the gain entirely if you owned the asset for at least 15 continuous years and you’re 55 or older (or permanently incapacitated) when you sell.
- The 50% active asset reduction halves the remaining gain and stacks with the standard 50% discount.
- The retirement exemption exempts gains up to a lifetime limit of $500,000, with amounts directed into superannuation if you’re under 55.
- The rollover defers the gain for up to two years, or longer if reinvested in a replacement asset or superannuation.
To use any of these, you must first be a small business entity with aggregated turnover under $2 million, or pass the maximum net asset value test (your and your connected entities’ net CGT assets can’t exceed $6 million). The asset itself must also pass the active asset test, and depreciating assets don’t qualify. When multiple concessions apply, work through them in order: small business concessions first, then capital losses, then the standard CGT discount.13Australian Taxation Office. CGT Concessions Eligibility Overview
Reporting and Paying
You report capital gains and losses in the capital gains section of your individual income tax return for the year the CGT event happened. You can lodge through myTax or through a registered tax agent.2Australian Taxation Office. What Is Capital Gains Tax
Self-lodgers have until 31 October following the end of the financial year. Using a registered tax agent generally buys you a later deadline under the ATO’s lodgment program, but you need to be on the agent’s books before 31 October to get the extension.14Australian Taxation Office. Lodge Your Tax Return With a Registered Tax Agent
Once the return is processed, the ATO issues a notice of assessment with the amount owing and the payment date.
What Happens If You Lodge Late
The ATO charges a failure-to-lodge penalty of one penalty unit for every 28-day period (or part) the return is overdue, capped at five penalty units. As of November 2024, one penalty unit is $330, so the maximum individual penalty is $1,650.15Australian Taxation Office. Failure to Lodge on Time Penalty16Australian Taxation Office. Penalty Units
The ATO generally won’t apply the penalty if your late return produces a refund or nil balance. That exception rarely helps if you have a capital gain to report, because the gain almost always increases the tax you owe. Interest also accrues on unpaid tax from the due date, so the longer you leave it, the more it costs.