What Is Stamp Duty and When Is It Payable in the Northern Territory?
Stamp duty in the NT is a one-off tax on conveyances of dutiable property (most commonly land), administered by the Territory Revenue Office under the Stamp Duty Act 1978. Duty is generally payable on the greater of the consideration paid or the property's unencumbered value.
How Is Stamp Duty Calculated in the NT?
The NT is the only jurisdiction covered by this site that uses a genuine mathematical formula rather than a simple band table for lower-value transactions. Taken directly from Schedule 1 of the Stamp Duty Act 1978: for a dutiable value up to $525,000, duty is calculated as D = (0.06571441 × V²) + 15V, where V is the dutiable value divided by 1,000. This produces a smoothly increasing effective rate as the value rises. Above $525,000, the calculation switches to a flat percentage of the entire dutiable value: 4.95% up to $3,000,000, 5.75% up to $5,000,000, and 5.95% at $5,000,000 and above.
First Home Buyer Support
Not confirmed as a general duty concession scale — the NT's primary first-home support appears to be cash grants (HomeGrown Territory $50,000 + FreshStart $30,000, for eligible transactions 1 October 2024–30 September 2026) plus a House and Land Package Exemption (100% duty waiver, no price cap, for new house-and-land packages, contracts 1 July 2022–30 June 2027) rather than a rate-scale relief like other states use. Whether a separate discount applies to established homes could not be confirmed from a primary source.
Family Farm Exemption
Section 87, Stamp Duty Act 1978: a conveyance of "farming property" (land used solely or principally for farming purposes, including the business of primary production) is exempt from duty where its main purpose is passing the property between generations of the same family, or between members of the same generation, and it is conveyed to a family member, a company wholly owned by family members, or a trust with only family-member beneficiaries (none of whom is a natural-person conveyor acting as trustee). The exemption does not apply where the Commissioner considers it a tax-avoidance scheme, the conveyee won't use the land solely/principally for farming, non-farming property is included in the same conveyance, or the same property already received this exemption within the last 5 years.
Family Farming Property Exemption Checker (Northern Territory)
A quick indication only — Section 87's actual conditions are detailed and the Territory Revenue Office's actual process requires a formal application.
Source: Stamp Duty Act 1978 (NT), Section 87 (see sources below).
Frequently Asked Questions
Who pays stamp duty — the buyer or the seller?
The purchaser (conveyee) is responsible for stamp duty on a conveyance in the NT.
Is there a first-home-buyer duty exemption in the NT?
Not confirmed as a rate-scale relief. The NT's headline first-home support appears to run through cash grants (HomeGrown Territory, FreshStart) and a House and Land Package Exemption for new builds, rather than a general duty discount like other states use.
Is there a young farmer duty concession in the NT?
No — no distinct young-farmer duty scheme was found for the northern territory.
Where can I get an exact stamp duty figure?
This page provides general information only — use the Territory Revenue Office's own online calculator, or speak with a conveyancer or solicitor, for a precise figure.
Updated on 2026-07-13 — what changed
13 July 2026: promoted from a cornerstone stub to a full article using a link to the NT Government's "Examples of duty and rates" page. The exact rate formula and the family farm exemption detail were then confirmed directly against Schedule 1 and Section 87 of the Stamp Duty Act 1978 itself (as in force 1 July 2025) — replacing a previously unconfirmed secondary-source formula that had been deliberately left out of the live calculator.