Stamp duty in Australia: how buyers should think about it

What stamp duty actually is

Stamp duty (transfer duty) is a state and territory tax paid when you buy property. It is not a federal tax, and it is not the same as council rates, land tax, or lender fees. On many purchases it is one of the largest cash items you need at settlement — often larger than legal fees and often larger than a few years of rate rises.

Each jurisdiction publishes its own rate tables and concession rules. That is why a $750,000 purchase in Queensland can produce a different duty figure to the same price in New South Wales or Victoria, even before first-home-buyer settings change the result.

How the brackets usually work

Most states use progressive brackets: you pay a base amount for reaching a threshold, then a marginal rate on the next slice of the purchase price. A small price change near a bracket edge can move duty more than buyers expect.

Duty is usually calculated on the dutiable value — typically the greater of purchase price and market value for genuine arm’s-length contracts. Special rules can apply to off-the-plan, related-party transfers, and some company or trust acquisitions. DutyStack models mainstream residential purchase paths; unusual structures still need a conveyancer.

Owner-occupier vs investment

In most states the standard residential table is the same whether you will live in the property or rent it out. Queensland is the important exception for everyday buyers: home concession rates can sit below the standard (investment) schedule, so purpose is not a cosmetic toggle.

Foreign purchaser surcharges are separate again. They stack on top of the base duty in several jurisdictions and can dominate the cash required if they apply.

• Confirm whether you qualify as a foreign person under that state’s surcharge rules
• Do not assume “investment” only changes lender policy — in QLD it can change duty
• Treat online calculators as estimates until your conveyancer lodges the assessment

Concessions are narrow on purpose

First-home-buyer concessions, pensioner concessions, and new-home pathways are designed around living arrangements, prior ownership, and sometimes contract date or build type. Ticking “first home buyer” while selecting an investment purpose often removes the concession path — and that is intentional policy, not a calculator quirk.

If your situation is close to a threshold (price cap, prior ownership, or living-in requirements), verify with the state revenue office before you exchange.

How DutyStack helps

DutyStack estimates transfer duty, typical government fees, deposit cash, scheme pathways, repayments, and indicative LMI from the inputs you enter. It is free, runs without an account, and is built for Australian residential purchases.

It is not a Revenue Office assessment, not credit advice under the NCCP, and not a substitute for your conveyancer’s figures on the actual contract.