← All Articles Sellers · Tax & Legal · 7 min read

Capital Gains Tax When Selling Your Home in Brisbane 2026

Most Brisbane homeowners sell with no CGT liability at all. But the rules around partial exemptions, rental periods, and the 50% discount are worth understanding before you list.

For most Brisbane homeowners selling their primary residence, capital gains tax is not something they will ever pay. The main residence exemption under Australian tax law is broad and generous, and it covers the vast majority of owner-occupied sales. But the exemption is not automatic in every case, and there are several scenarios where a partial CGT liability can arise that surprises vendors who assumed they were fully covered.

This article explains the key rules as they apply in Queensland in 2026. It is a practical overview, not tax advice. Your accountant or tax agent is the right person to confirm how these rules apply to your specific ownership history.

The main residence exemption

The main residence exemption means that if a property has been your primary home for the entire period you owned it, the capital gain on sale is fully exempt from CGT. There is no dollar threshold and no limit on how large the gain can be. The exemption applies regardless of whether you are selling a two-bedroom unit in Hawthorne or a large family home in Bulimba.

For the exemption to apply in full, three conditions generally need to be met. The property must have been your main residence for the entire ownership period. You must not have used any part of the property to produce assessable income, such as through rental or running a business. And the land area must generally be less than two hectares (which covers virtually all residential properties in Brisbane's inner east).

If all three conditions are met, you have no CGT liability and nothing further to consider.

When the exemption is partial

The exemption becomes partial, and a CGT liability can arise, in several common situations that are worth being aware of if your ownership history is not straightforward.

The most common situation for Brisbane vendors is having rented out the property for a period before moving in, or having rented it out after moving out before selling. If you owned the property as a rental investment for three years and then moved in for two years before selling, the gain attributable to the rental period is not exempt. The calculation is based on the proportion of ownership days the property was your main residence versus when it was income-producing.

A second common scenario is renting out a room or a self-contained area of the home, such as a granny flat. If you have received rental income from part of your home, the exemption is reduced proportionally based on the floor area used for income-producing purposes. This is a detail that many homeowners overlook, particularly those who used Airbnb or rented to a housemate during their ownership period.

Home office deductions can also affect the exemption if you have previously claimed the actual cost method for a dedicated home office space. The proportional use approach typically does not affect the exemption, but it is worth checking with your accountant if you have ever claimed home office expenses under the actual cost method.

The six-year absence rule

One of the more favourable provisions for Brisbane investors who have previously lived in their property is the six-year absence rule. If you move out of your main residence and rent it out, you can continue to treat it as your main residence for CGT purposes for up to six years. This means that if you sell within that six-year window, you may still be entitled to the full main residence exemption even though you were not living there at the time of sale.

The rule resets each time you move back in and re-establish the property as your main residence. However, you can only have one main residence at a time under Australian tax law, so if you purchase and move into a new home during the absence period, the six-year exemption for the original property ceases.

For vendors who bought a property in Morningside, Carina, or Norman Park a decade ago, lived in it for a few years, then rented it out and are now considering selling, the six-year absence rule is often the most important thing to understand before making decisions about timing.

The 50% CGT discount

If you do have a partial or full CGT liability, the 50% discount is a significant concession that applies to most residential property sales. If you have owned the property for more than 12 months, only half the capital gain is added to your assessable income. The other half is permanently discounted.

The discount applies to individuals and eligible trusts but not to companies. It applies automatically to qualifying assets held for more than 12 months, so there is no election required.

The practical effect is significant. If you purchased an investment property in Camp Hill in 2018 for $650,000 and sell in 2026 for $1,100,000, the gross capital gain is $450,000. After the 50% discount, only $225,000 is added to your taxable income. The tax payable depends on your marginal rate and any other income you earn that year, but the 50% discount substantially reduces the effective tax rate on property gains.

What your cost base includes

Your capital gain is calculated as the sale proceeds minus your cost base. The cost base is not just the purchase price. It includes the purchase price, stamp duty paid on acquisition, legal and conveyancing costs on both purchase and sale, and capital improvements made during the ownership period. Repairs and maintenance do not count, but structural improvements, extensions, and significant renovations that add to the property's value or extend its life do form part of the cost base.

Keeping records of all capital expenditure on your property is important precisely because it reduces your cost base calculation when you eventually sell. Many Brisbane vendors underestimate their cost base because they have not kept receipts for extensions, new bathrooms, or significant landscaping work completed years earlier. Your accountant can help reconstruct a cost base from builder invoices, council approval records, and bank statements where original receipts are no longer available.

Foreign residents and the withholding rules

If you are not an Australian resident for tax purposes at the time of sale, different rules apply. Foreign residents do not qualify for the main residence exemption on property sales that occur after 30 June 2020, subject to limited transitional arrangements. Additionally, for property sales above $750,000, Australian buyers are required to withhold 12.5% of the purchase price and remit it to the ATO unless the vendor provides a clearance certificate confirming they are an Australian resident for tax purposes.

If you are an Australian resident selling in Brisbane, obtaining a clearance certificate is straightforward and prevents the withholding obligation from arising. Your conveyancer or solicitor will typically guide you through this as a standard part of the settlement process.