NT Stamp Duty 2026-27: Formula-Based Rates, No Foreign Surcharge, and the $50,000 HomeGrown Grant

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The Northern Territory calculates stamp duty on property purchases using a mathematical formula for properties valued up to $525,000, rather than the sliding-scale approach used by every other Australian jurisdiction. For a property at this threshold, the formula yields a duty of approximately $25,988. Above $525,000, a tiered rate structure applies, with effective rates ranging from roughly 4.95% to 5.95% depending on the total property value. The NT imposes no foreign buyer stamp duty surcharge, making it one of only two jurisdictions (alongside the ACT) that do not levy an additional duty on foreign purchasers. First-home buyers in the Territory have access to the HomeGrown Territory Grant of $50,000 — the largest first-home grant in Australia — which replaced the old $10,000 First Home Owner Grant and applies to the purchase or construction of a new home with no price cap. A separate FreshStart grant of $30,000 is available to previous home owners building or buying a new home. All figures reflect FY2026-27 settings, as confirmed by the NT Territory Revenue Office and the Stamp Duty Act 1978.

How NT Stamp Duty Is Calculated

Unlike every other state and territory, which publish tables of price brackets and corresponding marginal rates, the Northern Territory uses a quadratic formula for properties with a dutiable value up to $525,000:

D = (0.06571441 × V²) + 15V

Where:

  • D is the duty payable in dollars
  • V is the dutiable value of the property divided by 1,000

For example, on a property valued at $400,000 (V = 400):

  • D = (0.06571441 × 400²) + (15 × 400)
  • D = (0.06571441 × 160,000) + 6,000
  • D = 10,514.31 + 6,000
  • Duty = $16,514.31

At the $525,000 threshold (V = 525):

  • D = (0.06571441 × 525²) + (15 × 525)
  • D = (0.06571441 × 275,625) + 7,875
  • D = 18,112.54 + 7,875
  • Duty = $25,987.54

For properties valued above $525,000, the Territory applies a tiered rate structure, with effective marginal rates between approximately 4.95% and 5.95%. At the upper end, the total duty as a percentage of property value converges towards the higher end of that range. Buyers should use the TRO online calculator or seek a formal assessment for exact figures on properties above $525,000.

No Foreign Buyer Surcharge

The Northern Territory does not impose any additional stamp duty surcharge on foreign purchasers of residential property. This distinguishes the NT from all other states, where foreign buyer surcharges range from 7% (WA, SA) to 9% (NSW).

The ACT also has no foreign surcharge on conveyance duty — however the ACT levies a separate 0.75% per annum surcharge on land tax for foreign owners, making the NT the only jurisdiction with neither a stamp duty surcharge nor an ongoing land tax surcharge solely attributable to foreign ownership status.

A foreign buyer purchasing an $800,000 property in the NT would pay the same duty as an Australian resident — approximately $39,600 — whereas the same buyer in NSW would face an additional $72,000 foreign surcharge on top of the standard transfer duty. This structural difference can reduce the total transaction cost for a foreign buyer in the NT by tens of thousands of dollars compared with the major east-coast markets. For a full breakdown of surcharges in every jurisdiction, see the article on foreign buyer stamp duty across Australian states.

The HomeGrown Territory Grant: $50,000 for First-Home Buyers

The NT replaced the former $10,000 First Home Owner Grant with a substantially larger HomeGrown Territory Grant of $50,000, available to first-home buyers who purchase or build a new home. Key features of the grant:

  • Eligibility: The applicant must be a first-home buyer purchasing or constructing a new home in the Northern Territory. The grant is available for both house-and-land packages and off-the-plan purchases.
  • No price cap: Unlike most state-based first-home grants, the HomeGrown grant does not impose a maximum property value. This makes it available across the full NT housing market.
  • Residency requirement: The applicant must occupy the home as their principal place of residence for a continuous period of at least 12 months, commencing within 12 months of settlement or completion of construction.
  • Interaction with stamp duty: The grant is a cash payment to the buyer and does not offset stamp duty liability. A first-home buyer purchasing a new home at $525,000 would pay stamp duty of approximately $25,988 and receive the $50,000 HomeGrown grant, leaving a net positive of roughly $24,012 on these two line items.

The old $10,000 FHOG — which was available for both new and established homes — no longer exists for new applicants. Existing FHOG applications lodged before the transition are honoured under the scheme that was in force at the time of application.

The FreshStart Grant: $30,000 for Previous Home Owners

The Territory also offers a FreshStart grant of $30,000 for applicants who have previously owned a home in Australia but do not currently own one. This grant is designed to encourage established residents to re-enter the housing market by building or buying a new home. Eligibility criteria mirror the HomeGrown grant in terms of the new-home requirement and the 12-month occupancy obligation, though the applicant must not have owned a residential property anywhere in Australia in the five years preceding the application. The FreshStart grant is not available to first-home buyers; an applicant who qualifies for both grants would receive only the higher-value HomeGrown grant.

How NT Compares with Other Jurisdictions

The NT’s stamp duty model diverges from the rest of Australia in several important ways. For a side-by-side numerical comparison of duty payable on an identical property value across all eight states and territories, see the Australian stamp duty comparison for 2026.

  • Formula vs scale: Every other state uses a sliding scale with price brackets and marginal rates. The NT’s quadratic formula for the sub-$525,000 range is unique.
  • No foreign surcharge: The NT and ACT are the only jurisdictions without a foreign buyer stamp duty surcharge. The ACT compensates with a land tax surcharge; the NT has neither.
  • Largest first-home grant: At $50,000, the HomeGrown grant is the highest-value first-home grant in the country — more than three times the $15,000 offered in South Australia and five times the $10,000 offered in NSW, Victoria, and Western Australia. For a comprehensive breakdown of all upfront costs facing a first-home buyer, see the article on first-home buyer costs in 2026.
  • No first-home stamp duty concession: Unlike most states, the NT does not offer a stamp duty exemption or concession specifically for first-home buyers. The HomeGrown grant serves as the Territory’s primary first-home support mechanism rather than a duty reduction.

For the broader tax environment affecting Australian property buyers in FY2026-27, including the reduction of the second marginal income tax rate from 16% to 15%, see Australia income tax rates 2026-27.

Frequently Asked Questions

How is NT stamp duty different from other states?

The NT uses a mathematical formula — D = (0.06571441 × V²) + 15V — for properties valued up to $525,000, while every other state relies on a sliding scale of price brackets and associated marginal rates. Above $525,000, the NT reverts to a tiered rate structure similar to other jurisdictions.

Does the Northern Territory have a foreign buyer stamp duty surcharge?

No. The NT imposes no additional conveyance duty on foreign purchasers of residential property. It is the only Australian jurisdiction with neither a stamp duty surcharge nor a land tax surcharge specifically attributable to foreign ownership.

Can I get both the HomeGrown grant and a stamp duty discount?

The HomeGrown Territory Grant is a cash payment of $50,000, not a stamp duty concession. The NT does not offer a separate stamp duty exemption or discount for first-home buyers. You would pay the full duty calculated under the formula or tiered rates and receive the grant as a separate benefit.

Who is eligible for the FreshStart grant?

The FreshStart grant of $30,000 is available to applicants who have previously owned a home in Australia, do not currently own one, and have not owned residential property anywhere in Australia in the five years before applying. The purchase must be a new home, and the applicant must occupy it as their principal residence for at least 12 months.

How does NT compare with the ACT for foreign buyers?

Both the NT and the ACT have no foreign buyer stamp duty surcharge. The ACT does levy a 0.75% per annum surcharge on land tax for foreign owners, whereas the NT has no equivalent. This makes the NT the lowest transaction-cost jurisdiction in Australia for a foreign purchaser, although the total cost will also depend on the property value and the standard duty payable.

Data Sources and Currency

This article is based on official rates and scheme rules published by the NT Territory Revenue Office and the Stamp Duty Act 1978 (NT). Key sources include:

Data current as at July 2026. Rates, grant amounts, and eligibility criteria may change. Verify with the NT Territory Revenue Office or a licensed conveyancer before making a purchase decision.

Disclaimer

This article provides general information only and does not constitute financial, legal, or tax advice. Stamp duty amounts, grant eligibility, and concession rules depend on individual circumstances, including the exact dutiable value of the property, the nature of the transaction, and the residency and ownership history of the buyer. Confirm all figures and eligibility with the NT Territory Revenue Office or a qualified conveyancer. Readers seeking personalised advice may consult a licensed conveyancer, property lawyer, or registered financial adviser.