Stamp Duty Calculator NT

How stamp duty is calculated in the Northern Territory

The Northern Territory does not use the bracket system found in most states. Schedule 1 of the Stamp Duty Act 1978 sets out a formula for dutiable values up to $525,000: D = (0.06571441 × V²) + 15V, where D is the duty in dollars and V is the dutiable value divided by 1,000. Because the value is squared, the effective rate rises smoothly with the price rather than stepping up at fixed thresholds. The dutiable value is generally the greater of the price paid and the unencumbered value of the property, so for an ordinary sale on the open market it is the contract price.

Applying the formula to some common prices shows how it behaves. A property with a dutiable value of $300,000 attracts duty of about $10,414, a $400,000 property attracts about $16,514, and a $500,000 property attracts about $23,929. At $525,000 the formula produces about $25,988, which is very close to 4.95% of that value, so the move from the formula to the flat rate does not create a sudden jump in duty at that point.

Above $525,000 the Act applies a single percentage to the whole dutiable value. A value above $525,000 but below $3,000,000 attracts 4.95%, so a $600,000 home attracts $29,700 and a $750,000 home attracts $37,125. A value of $3,000,000 or more but below $5,000,000 attracts 5.75%, and a value of $5,000,000 or more attracts 5.95%. Because each flat rate applies to the entire value, crossing the $3,000,000 or $5,000,000 threshold by a single dollar increases the duty on the whole amount. On these rules a property valued at $2,999,999 attracts about $148,500, while a property valued at $3,000,000 attracts $172,500.

Northern Territory stamp duty for first home buyers in 2026

As at September 2026 the Northern Territory has no general stamp duty exemption or concession for first home buyers. The first home owner concession in the Stamp Duty Act does not apply to conveyances first executed on or after 4 December 2012, and the first home owner discount applied only to conveyances first executed between 24 May 2016 and 7 May 2019. The Territory home owner discount, which provided up to $18,601 of relief, sits within the home incentive schemes division of the Act, and section 88A limits that division to conveyances first executed on or before 30 June 2021 unless a provision expressly says otherwise.

The practical result is that a first home buyer purchasing an established home in the Territory pays the same stamp duty as any other purchaser at the same price, which is why the calculator shows identical figures for the three buyer types. The Territory instead directs its support for first home buyers through the HomeGrown Territory Grant, a first home owner grant of $50,000 for eligible new homes where the contract is signed between 1 October 2025 and 30 September 2027. The grant does not reduce the duty assessment itself, but it adds to the funds available at settlement. The grant, its conditions and the FreshStart New Home Grant for existing home owners are explained on the Northern Territory grants page of this site.

The Northern Territory House and Land Package Exemption

Division 2A of the Stamp Duty Act exempts from duty certain purchases of residential land from a building contractor, commonly known as the House and Land Package Exemption. It applies to conveyances first executed between 1 July 2022 and 30 June 2027. The exemption is not limited to first home buyers, and the Act sets no cap on the value of the land or the home.

The conditions are specific. The purchaser must be an individual aged at least 18 who is an Australian citizen or permanent resident, and must acquire the whole beneficial interest in land owned by a registered building contractor. Under the same contract the builder must agree to build or place a detached new home on the land, to complete a partially built detached new home on it, or to transfer a completed detached new home that has not previously been occupied or sold as a residence. The builder must have bought the land from the person who developed it as a residential lot and must have paid duty on that purchase.

The purchaser must also become entitled to possession within 12 months after settlement and occupy the home as a principal place of residence for a continuous period of at least six months, commencing within the period the Act allows for occupancy. The Commissioner may vary these requirements where special reasons exist. Units, townhouses and established homes do not meet the detached new home condition, and land bought from a party other than a building contractor does not qualify. The exemption conditions in the Act do not exclude a purchaser who also receives a first home owner grant, although eligibility for each should be confirmed with the Territory Revenue Office before contracts are signed.

Buying vacant land and building a home in the Territory

Where a purchaser buys vacant land from one party and signs a separate contract with a builder, duty is assessed on the conveyance of the land only. The building contract is not a conveyance of land, so the cost of construction does not add to the dutiable value. On the Territory formula, a block with a dutiable value of $250,000 attracts duty of about $7,857, which is considerably less than the duty on a completed home of similar total cost.

Because the formula rises more steeply as values increase, splitting the purchase in this way can make a noticeable difference to the upfront cost. Whether a particular arrangement is a single conveyance of land and home, or a purchase of land followed by a separate building contract, depends on the documents, and the Territory Revenue Office assesses the substance of the transaction. A land purchase followed by a comprehensive home building contract may also be an eligible transaction for the HomeGrown Territory Grant, subject to the grant conditions. The calculator on this page models an established home, so it does not apply the House and Land Package Exemption or separate the land and building components.

Senior, pensioner and carer concession in the Northern Territory

Earlier guidance on Northern Territory stamp duty often refers to a senior, pensioner and carer concession. Under section 89A of the Stamp Duty Act this concession reduced duty by up to $10,000 for a home bought by a purchaser aged 60 or over, or by the holder of an NT Pensioner and Carer Concession Card, subject to value limits and an occupancy requirement. The concession sits in the same home incentive schemes division as the Territory home owner discount and is limited by section 88A to conveyances first executed on or before 30 June 2021.

Some older government pages describing the concession remain accessible online. A purchaser who expects to rely on it should confirm its status with the Territory Revenue Office before signing a contract, because the current consolidation of the Act does not extend the concession to later conveyances. The House and Land Package Exemption, described above, has no age or first home requirement and remains available to older purchasers who meet its conditions.

Foreign purchasers and investors in the Northern Territory

Most Australian states impose an additional duty or surcharge on foreign purchasers of residential property. The Northern Territory Stamp Duty Act, as currently consolidated, contains no such surcharge, so a foreign purchaser pays duty at the ordinary rates set out in Schedule 1. Foreign purchasers remain subject to the Australian Government foreign investment framework, which is separate from Territory stamp duty and may require approval and fees before a purchase proceeds.

The Territory also applies one schedule to owner-occupiers and investors. An investor buying a $600,000 unit in Darwin pays the same $29,700 in duty as an owner-occupier buying at the same price. For tax purposes, stamp duty paid on the purchase of an investment property is generally included in the cost base of the asset for capital gains tax rather than claimed as an immediate deduction. A registered tax agent is able to confirm the treatment that applies in a particular case.

When NT stamp duty is payable and how it is lodged

Under section 9 of the Stamp Duty Act, a dutiable instrument such as a contract for the sale of land must be lodged with the Commissioner of Territory Revenue for assessment within 60 days after it is first executed. Duty must be paid on or before the last day allowed for lodgement, unless a later date is fixed in the notice of assessment. In most Territory purchases the conveyancer or solicitor acting for the buyer lodges the contract with the Territory Revenue Office and arranges payment, and in practice duty is often paid at or before settlement.

Section 9A prohibits the registration of a dutiable instrument that has not been duly stamped, so a transfer cannot be registered until the duty has been assessed and paid or an exemption has been recorded. Where an exemption such as the House and Land Package Exemption is claimed, the application and supporting declaration are lodged with the Territory Revenue Office as part of the assessment. A purchaser who later fails to meet an occupancy condition must notify the Commissioner, and the Commissioner may reassess the duty that was exempted.

Territory stamp duty, the deposit and lenders mortgage insurance

Lenders generally expect stamp duty to be paid from the purchaser's own funds, in addition to the deposit, rather than added to the loan. On a $600,000 home in the Northern Territory, a purchaser with a 10% deposit therefore needs $60,000 for the deposit and a further $29,700 for duty, before conveyancing fees, inspections and loan costs. Money spent on duty cannot also count towards the deposit, so a higher duty bill reduces the deposit available and may push the loan to value ratio above 80%.

Once the loan to value ratio exceeds 80%, most lenders require lenders mortgage insurance, which is a one-off premium that protects the lender and may be paid upfront or added to the loan. The premium rises sharply as the deposit falls, so the combined effect of duty and insurance deserves close attention. Eligible purchasers in the Territory may be able to avoid lenders mortgage insurance through the Australian Government 5% Deposit Scheme, subject to its property price caps for Darwin and the rest of the Territory. BorrowWise is an education site that can connect readers with an accredited broker, who is able to set out the deposit, duty and insurance costs for a particular purchase.