Transfer duty is one of the biggest acquisition costs in a development feasibility, and it is one of the easiest lines to misread if you jump between states. Developers who treat duty as "about five per cent" usually either overbid, under-model or both.

The Fast Answer

Across Australia, the practical duty questions are:

  1. What does this state call the tax and what are the current thresholds?
  2. Is there a foreign buyer or foreign acquirer surcharge?
  3. What happens if the site is held long enough to trigger land tax pain?
  4. Does the buyer or end buyer get any useful first home or off-the-plan settings?

Get those wrong and the whole feasibility is wrong.

Property contract, calculator, and state revenue documents on a desk

The stamp duty puzzle: five states, five different rate structures, five different surcharge and concession settings. Getting the right number means checking each state's current revenue authority page, not relying on an old spreadsheet.

Why State Comparisons Matter

Factor NSW VIC QLD WA SA
Top marginal duty rate Premium above $3.4M 5.5% above $960K 5.75% above $1M 5.15% above $725K 5.5% above $500K
Foreign surcharge 8% (Surcharge Purchaser Duty) 8% (AFPD) 7% (AFAD) 7% (FTD) 7% (FSS)
Off-the-plan concession Yes, time-limited Yes Limited Up to $50K rebate Limited
First home buyer nil duty Up to $800K Up to $600K Up to $700K Up to $430K Up to $650K
Land tax threshold (individual) $1.075M $50K (general) $600K $300K $450K

Developers compare sites across states all the time. The acquisition cost structure is not interchangeable.

  • NSW can look harsher once you combine transfer duty, surcharge purchaser duty and the premium band above $3.4M. On a $5M site with foreign exposure, you can be looking at well over $400K in duty alone
  • Queensland can look more workable with nil duty for first homes up to $700K, but AFAD at 7% and holding structure still matter on anything with foreign capital
  • Victoria brings its own pain: the $50K land tax threshold means holding costs bite fast, and AFPD at 8% matches NSW as the highest foreign surcharge in the country
  • WA can still be comparatively lighter on transfer duty, and the off-the-plan rebate (up to $50K) is one of the more generous nationally, but FTD at 7% and MRIT need to be modelled
  • SA may look more affordable on site price, but the 5.5% top rate kicks in at just $500K, which is lower than every other mainland state

Duty Is Only Part of the Acquisition Story

Developers should never model duty in isolation.

The bigger acquisition-cost stack usually includes:

  • transfer duty or land transfer duty
  • foreign surcharge exposure
  • land tax while holding
  • GST and margin-scheme consequences
  • legal and structuring implications around trusts or entities

Same site, different buyer structure, different number at the bottom of the page.

Entity structure risk: Buying through a trust, company or joint venture can trigger different duty rates, surcharge exposure or land tax thresholds compared to an individual purchase. In VIC, for example, trusts that can benefit foreign persons attract the 8% AFPD regardless of whether any beneficiary is actually foreign. Get the structure wrong before exchange and the cost is locked in. Always confirm entity treatment with a duty-aware adviser before signing.

First Home Buyer Settings Can Change Exit Pricing

The developer never gets the concession directly. But first home buyer settings still shape how attractive completed product is to the end buyer.

Most relevant for:

  • townhouses
  • smaller apartments
  • grouped dwellings
  • house-and-land style product in growth corridors

Off-the-Plan Rules Are Not the Same in Every State

Off-the-plan rules are one of the biggest sources of confusion in duty discussions.

  • In some states, the main practical benefit is timing or a concession tied to the construction component
  • In others, the settings are temporary, expanded, or targeted to specific product types

Treat off-the-plan duty settings as state-specific and time-specific. They are not a generic national discount.

GST Still Sits Next to Duty

Transfer duty and GST are different taxes. Developers feel them together in feasibility.

If the acquisition and later sales qualify, the margin scheme can materially change the GST result. A duty-only view is never the whole tax picture.

Practical Advice Across States

  1. Use the current state revenue authority page, not an old spreadsheet.
  2. Check foreign surcharge exposure before exchange.
  3. Model land tax under the actual holding entity.
  4. Treat first home buyer settings as an exit-pricing issue, not just a buyer issue.
  5. Separate transfer duty from GST, but model both.
Watch out: Old duty tables are everywhere online. Always check the current state revenue authority page before modelling. A stale rate on a $1.5M acquisition can mean a $20-40K error in your feasibility.

The Bottom Line

There is no single Australian stamp duty rule for developers. The useful comparison is not "which state is cheapest" in the abstract. It is which state's live duty, surcharge, land tax and buyer settings still allow your project to stack up after real acquisition costs are loaded.

For state-specific detail, use the linked guides for NSW, Queensland, SA, and WA. And if you are comparing sites across states, run them through a proper feasibility framework first.

Sources and Further Reading