Most people assume selling land produces a capital gain, and that the main residence exemption or the general discount will take care of it. Sometimes that is right. Often the answer turns on questions that were settled years earlier, when the land was acquired.
Capital gain, or ordinary income?
If land was held as a long-term investment, the proceeds are generally a capital gain. If it was acquired with the intention of resale at a profit, or sold as part of a business or a profit-making undertaking, the proceeds can be ordinary income instead — with no general discount available. Subdividing, developing and selling multiple lots pushes firmly toward the second category, and the label on the transaction does not decide it.
Is GST in play?
A private sale of a long-held investment property is usually outside the GST system. A sale that forms part of an enterprise may not be, and the margin scheme, the going-concern rules and GST at settlement all become live. Getting this wrong changes the net proceeds materially and it is decided by the contract, so it needs to be worked out beforehand.
What is actually in the cost base?
More than the purchase price. Stamp duty, legal fees, agent commission, and in some cases holding costs such as rates, land tax and interest where the property was not income-producing. Records going back to acquisition are what make this claimable, which is the strongest argument for keeping the settlement file for as long as you hold the asset.
Who owns it, and when did the clock start?
The owning entity determines the rate applied and whether the general discount is available at all — companies are treated differently to individuals and trusts. The contract date, not settlement, generally starts the holding period. A sale signed a week before an anniversary can cost real money for no reason other than timing.
Where the main residence sits in it
Vacant land generally does not attract the main residence exemption in its own right, and land subdivided off a main residence is usually treated separately from the dwelling. This is one of the most commonly misunderstood parts of a subdivision, and the assumption is typically discovered after contracts are exchanged.
None of this is a reason not to sell. It is a reason to have the conversation before you sign, while the structure of the transaction can still be changed.