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

The Northern Territory has the most unusual stamp duty calculation in Australia — a quadratic formula for properties up to $525,000 — and two of the most attractive incentives for anyone buying or building a new home. The old $10,000 first home owner grant has been replaced by a $50,000 HomeGrown Territory Grant, and like the ACT, there’s no foreign buyer surcharge on transfer duty. Here’s the full picture for 2026-27.

NT transfer duty rates 2026-27

The NT uses two different methods to calculate duty, depending on the property’s dutiable value.

For properties up to $525,000: the formula method

For dutiable values up to $525,000, stamp duty is calculated using a quadratic formula:

D = (0.06571441 × V²) + 15V

Where V is the dutiable value divided by 1,000. This means the effective rate rises smoothly as the value increases, rather than jumping between discrete brackets.

For example, on a $500,000 property: V = 500. D = (0.06571441 × 500²) + (15 × 500) = (0.06571441 × 250,000) + 7,500 = 16,428.60 + 7,500 = $23,928.60. The effective rate is approximately 4.8%.

On a $400,000 property: V = 400. D = (0.06571441 × 160,000) + 6,000 = 10,514.31 + 6,000 = $16,514.31. Effective rate approximately 4.1%.

On a $300,000 property: V = 300. D = (0.06571441 × 90,000) + 4,500 = 5,914.30 + 4,500 = $10,414.30. Effective rate approximately 3.5%.

For properties above $525,000: tiered rates

Above $525,000, the NT applies tiered marginal rates ranging from approximately 4.95% to 5.95%, similar to the other state systems. The exact tiers and rates are specified in the Stamp Duty Act and administered by the NT Territory Revenue Office. Because the formula method already delivers effective rates in the 4.8% range at the $525,000 threshold, the step up to the tiered system is relatively smooth — there is no sudden jump.

First home buyer support: the $50,000 HomeGrown Territory Grant

The NT restructured its first home buyer support by replacing the old $10,000 First Home Owner Grant with two new grants:

HomeGrown Territory Grant — $50,000

Available to first home buyers who build or purchase a new home. There is no price cap — the full $50,000 applies regardless of the property value. This is the most generous new-home grant in Australia by a wide margin.

The grant is paid as a lump sum, usually at settlement or on completion of construction. It can be applied toward your deposit, stamp duty, legal fees or any other purchase cost — it is not restricted to a specific use.

Eligibility is straightforward: you must be a first home buyer (or your spouse/partner must be), the property must be a new dwelling, and you must intend to live in it as your principal place of residence for a continuous period of at least six months within the first 12 months.

FreshStart Grant — $30,000

Available to buyers who have previously owned a home and are now building or buying a new home in the NT. The FreshStart grant recognises that not everyone entering the NT housing market is a first-time buyer — people relocating, separating or re-entering the market after a period of renting or living elsewhere can access this $30,000 grant.

Both the HomeGrown and FreshStart grants are administered by the NT Government through the Territory Revenue Office. They are cash grants, not duty concessions — meaning you still pay the full transfer duty on your purchase, but you receive a lump sum that offsets your total costs.

No foreign buyer surcharge

The Northern Territory does not impose a foreign purchaser surcharge on transfer duty. If you’re a foreign person or temporary resident buying residential property in Darwin, Alice Springs or anywhere else in the NT, you pay the same stamp duty as an Australian citizen or permanent resident.

This makes the NT — alongside the ACT — one of only two Australian jurisdictions without a foreign buyer conveyance surcharge. In NSW, Victoria, Queensland, Western Australia, South Australia and Tasmania, foreign buyers face surcharges ranging from 7% to 9% on top of standard duty.

However, foreign buyers should still be aware of other federal-level restrictions, including Foreign Investment Review Board approval requirements and application fees, which apply nationwide regardless of state-level stamp duty treatment.

How NT compares to other states

For standard (non-first-home) purchases, NT stamp duty sits in the middle to upper range at typical price points. On a $500,000 property, NT duty of roughly $23,900 is comparable to South Australia ($21,300), more expensive than Queensland ($8,750) and Western Australia ($18,000), and cheaper than NSW ($24,000) and Victoria ($31,000).

But for first home buyers building or buying new, the NT becomes one of the cheapest jurisdictions in dollar terms. A first home buyer purchasing a $550,000 new home in Darwin would pay about $26,700 in stamp duty but receive $50,000 from the HomeGrown grant — a net gain of over $23,000. No other state or territory offers a net-positive grant-to-duty ratio at mid-range price points.

Use the stamp duty calculator to get your exact number

The NT’s formula-based calculation makes mental arithmetic unreliable — a $10,000 difference in purchase price changes the duty by more than a linear estimate would suggest, because the quadratic term amplifies the effect at higher values.

Use our stamp duty calculator to enter your exact property value, select Northern Territory, and get a precise figure. The calculator handles the formula-based and tiered-rate systems automatically, and you can factor in the HomeGrown or FreshStart grant to see your net position.

Related guides: See our breakdowns on stamp duty by state compared, first home buyer total costs for 2026, and foreign buyer property purchase costs across Australia.

Data sources and verification date

The rates, grants and concessions described in this guide are drawn from publicly available information published by the NT Territory Revenue Office and are current as of July 2026. Key sources include:

• NT Territory Revenue Office — Transfer Duty rates and calculators
• NT Government — HomeGrown Territory Grant and FreshStart Grant program guidelines
• Stamp Duty Act 1978 (NT), as administered by the Territory Revenue Office
• NT Government — Foreign investment and property purchase information

Data as at July 2026. The NT stamp duty formula and tiered rates are set by legislation and administered by the Territory Revenue Office. Grant programs, eligibility criteria and payment amounts are subject to change. Always confirm the current duty, grant eligibility and foreign-purchaser treatment with the Territory Revenue Office or a qualified conveyancer before making a purchase decision.

Disclaimer: This article provides general information only and does not constitute financial, tax or legal advice. Stamp duty calculations depend on your specific circumstances including purchase price, buyer status, property type, contract date and whether the property is new or established. Always verify your duty liability with the NT Territory Revenue Office or a licensed conveyancer or solicitor before making a purchase decision. For tax implications — including the treatment of government grants and the interaction with federal foreign-investment rules — consult a registered tax agent.