Windfall gains tax in Victoria, explained for buyers

Most property taxes are triggered by something you do: buying, selling, holding. The windfall gains tax is triggered by something a government does to your land, a rezoning that lifts its value. For most home buyers it never comes up. But if you are looking at land on the edge of a growth area, a former commercial site, or anything with development potential, it is worth understanding, because a deferred windfall gains tax liability can travel with the land to you.

What is the windfall gains tax?

The windfall gains tax (WGT) is a Victorian state tax on the increase in land value that results from a government rezoning. The idea behind it is that when a planning scheme amendment rezones land in a way that makes it worth substantially more, the owner receives a "windfall" they did nothing to earn, and the state takes a share of that uplift. It started on 1 July 2023 and is administered by the State Revenue Office (SRO).

When does it apply?

It applies when a government rezoning causes a "taxable value uplift" to the land of more than $100,000. The uplift is the difference in the land's value before and after the rezoning, as assessed by the Valuer-General. If the uplift is $100,000 or less, no windfall gains tax is payable. So this is not a tax on ordinary market growth or on renovating a home; it is specifically tied to the value a rezoning creates.

How much is the windfall gains tax?

The rate depends on the size of the uplift, and the two brackets work quite differently:

• Uplift above $100,000 and below $500,000: a rate of 62.5 per cent applies, but only to the portion above $100,000. So an uplift of $300,000 is taxed on $200,000 of it.
• Uplift of $500,000 or more: a rate of 50 per cent applies to the entire uplift, from the first dollar.

That structure means the tax can be very large in absolute terms on genuinely rezoned development land, which is exactly why the rules around who pays it, and when, matter so much.

Who pays it?

The person who owns the land at the time it is rezoned is the one liable for the windfall gains tax. That is the critical point for a buyer to hold onto: the liability is created by a rezoning that happened while someone else owned the land. Whether any of it ends up being your problem depends entirely on the next section, deferral.

Deferral, and why it matters when you buy

The owner does not have to pay the windfall gains tax the moment the rezoning happens. They can defer it, until the land next changes hands or for up to 30 years, whichever comes first. Interest is added to the amount while it is deferred.

Here is the buyer's angle. A sale or transfer of the land is one of the events that ends a deferral, and the deferred tax (plus accrued interest) becomes payable, with payment due within 30 days. So when you buy land that carries a deferred windfall gains tax liability, your purchase can be the very event that crystallises it. Who actually bears that cost is a matter for the contract and the settlement adjustments, and it is precisely the kind of thing your conveyancer needs to identify and account for before you sign, not discover afterwards.

How would you know the land is affected?

A windfall gains tax liability is a financial obligation attached to the land, so it is the sort of thing that should surface in the Section 32 vendor statement and the contract. For land with development potential or a recent change of zone, the questions that matter are whether the land has been rezoned since 1 July 2023 and whether any windfall gains tax has been assessed or deferred. A clean-looking title does not necessarily settle those questions; a deferred liability is a figure that can be checked with the SRO, and confirming it is a matter for a conveyancer.

When does it not apply?

Several categories of land are exempt or excluded, and the residential exemption is the one that keeps this tax away from most ordinary home buyers. The exclusions include:

• Residential land, up to 2 hectares, that has a home on it (or is being built on) at the time of the rezoning.
• Land rezoned to or from the urban growth zone within the growth areas infrastructure contribution (GAIC) area, which is dealt with under that separate scheme instead.
• Land rezoned to a rural zone (other than the rural living zone).
• Rezonings that merely correct an obvious or technical error in the planning scheme.

Because the residential exemption covers up to 2 hectares with a dwelling, a standard house purchase is almost never caught. The windfall gains tax is really a development-land tax, and the reason to understand it as a buyer is narrow but important: so that a deferred liability on a development-potential block does not become an unpriced surprise at settlement.

Sources

• State Revenue Office Victoria, "Understanding windfall gains tax": the 1 July 2023 start date; the trigger of a rezoning causing a taxable value uplift over $100,000; the rate structure (62.5 per cent on the portion above $100,000 for uplifts under $500,000; 50 per cent of the total uplift for uplifts of $500,000 or more); liability resting with the owner at the time of rezoning; and deferral until the land next changes hands or 30 years, with interest added and payment due within 30 days of the triggering event. https://www.sro.vic.gov.au/owning-property/windfall-gains-tax/understanding-windfall-gains-tax
• State Revenue Office Victoria, "All exemptions and exclusions": the residential land exemption of up to 2 hectares, the urban growth zone / GAIC exclusion, the rural zone exclusion, and the technical-error exclusion. https://www.sro.vic.gov.au/owning-property/windfall-gains-tax/all-exemptions-and-exclusions

Sources verified 18 August 2026. Windfall gains tax rates, thresholds, and exemptions are set by legislation and can change; a deferred liability on specific land must be confirmed with the State Revenue Office or your conveyancer before relying on any figure.