For many homebuyers and investors, purchasing off the plan property can be an exciting opportunity. By buying a property before it's constructed, buyers can secure a potentially lower price and enjoy the excitement of seeing their dream home come to life. However, like any property purchase, off the plan transactions are subject to certain taxes such as stamp duty. This article will delve into what you need to know about off the plan stamp duty and guide you through the process of how it’s calculated.
Stamp duty is a tax imposed by the government on certain transactions, including property purchases. The amount of stamp duty varies based on factors such as the property's value, location and type of buyer (e.g. first homebuyer, investor or foreign buyer). When buying off the plan, stamp duty is generally calculated based on the property's market value at the time you sign the contract and not at the time of settlement.
The first step in calculating off the plan stamp duty is to figure out the property's market value at the time you sign the contract. This value can be obtained from the developer or through a registered valuer. The market value will serve as the basis for calculating the stamp duty.
Before proceeding further, it's crucial to check if you are eligible for any stamp duty exemptions or concessions. Some jurisdictions offer concessions for first homebuyers, pensioners or properties below a certain threshold. These concessions can significantly reduce the stamp duty burden so make sure to research your local government's policies.
In certain cases, some jurisdictions may offer specific concessions for off the plan purchases. These concessions are designed to promote property development and may provide relief to buyers. Check with your local revenue office to see if any concessions apply to your off the plan purchase.
As mentioned earlier, off the plan stamp duty is based on the property's market value at the time of contract signing. However, the actual settlement date may be months or even years in the future, allowing time for the property to be constructed.
In some cases, this gap between contract signing and settlement could affect the stamp duty calculation as the market value may change during this period. It's advisable to speak with a tax expert or with your local revenue office to clarify how such scenarios would be handled in your jurisdiction.

Stamp duty rates are typically progressive, meaning the percentage increases as the property value rises. Different jurisdictions have different stamp duty rate structures so it's essential to check the relevant revenue office or government website to determine the applicable rates for your area.
To calculate the stamp duty amount, multiply the market value of the property by the appropriate stamp duty rate.
For example, if the market value of the property is $600 000 and the applicable stamp duty rate is 4%, the calculation would be:
Stamp Duty = $600 000 x 4% = $24 000
Keep in mind that some regions may have additional surcharges for foreign buyers or investment properties. These surcharges are usually applied on top of the standard stamp duty rate so be sure to account for them in your calculations.

While purchasing property off the plan can be quite advantageous, it is crucial to be fully informed about the associated costs, including stamp duty. Remember to determine the property's market value at the time of contract signing, research any available concessions and be aware of the applicable stamp duty rates in your region.
Always consult with a tax professional and a financial advisor if you have any doubts or questions about the calculation process. With this knowledge, you'll be better prepared to make an informed decision and avoid any surprises when it comes to off the plan stamp duty.
Buying off the plan property can be a daunting process, but there’s an easier way. iBuyNew is your all in one solution that supports you at every stage, from search to settlement.
We take the pressure off you by doing the research, shortlisting the best properties that suit your needs, connect you to excellent brokers and conveyancers and keep you updated throughout the construction process, all the way until you get your keys. Book a FREE discovery call today or call 1300 123 463.
Sign up to our Free VIP membership for a personalised service.
Learn more