NT Stamp Duty Calculator 2026
Calculate stamp duty on your Northern Territory property purchase with current 2025–26 rates, including the unique NT formula for properties under $525,000.
On a $500,000 property in the Northern Territory, stamp duty is $23,928.60 using the NT formula (2025–26). The NT no longer offers a stamp duty concession for first home buyers, but the $50,000 HomeGrown Territory Grant is available for new-build homes.
Calculate Your NT Stamp Duty
Toggle to see stamp duty concessions
Cost Breakdown
Range: $750 – $1,600
Range: $30,450 – $31,300
Estimates only. Actual costs may vary. Consult a licensed conveyancer or settlement agent for accurate quotes.
How Stamp Duty Works in Northern Territory
The Northern Territory uses a unique formula-based system for calculating stamp duty on properties under $525,000. The formula D = 0.06571441 × v² + 15v (where v is the property value in thousands of dollars) produces a non-linear result that increases more steeply than progressive brackets. For example, on a $500,000 property, v = 500, so D = 0.06571441 × 250,000 + 15 × 500 = $23,928.60. For properties above $525,000, flat rates apply: 4.95% up to $3M, 5.75% up to $5M, and 5.95% above $5M.
NT stamp duty is administered by the Territory Revenue Office (part of the Department of Treasury and Finance). The duty is payable within 60 days of the transaction date. The Northern Territory property market is smaller than mainland states, with fewer conveyancers operating in the region.
The Northern Territory does not currently offer any stamp duty concession for first home buyers — the previous First Home Owner Discount ended on 30 June 2021. However, the HomeGrown Territory Grant (introduced October 2024) provides $50,000 for eligible buyers building or purchasing a new home. The House and Land Package Exemption (HLPE) also provides full stamp duty relief for qualifying new house-and-land contracts settled before 30 June 2027 — available to all buyers, not just first home buyers.
NT Stamp Duty Rates 2025–26
| Property Value | Rate |
|---|---|
| $0 – $525,000 | Formula-based |
| $525,001 – $3,000,000 | 4.95% |
| $3,000,001 – $5,000,000 | 5.75% |
| $5,000,000+ | 5.95% |
Rates current as of the 2025–26 financial year. Source: Territory Revenue Office.
First Home Buyer Concessions in NT
No stamp duty concession for first home buyers — the previous First Home Owner Discount ended 30 June 2021. The $50,000 HomeGrown Territory Grant (since October 2024) is available for new-build homes. The House and Land Package Exemption (HLPE) also provides full duty relief for qualifying new house-and-land contracts settled before 30 June 2027 (available to all buyers).
When and How to Pay Stamp Duty in NT
Within 60 days of the transaction date. Your conveyancer arranges payment to the Territory Revenue Office.
Frequently Asked Questions
How is NT stamp duty calculated differently?
The NT uses a mathematical formula for properties under $525,000 rather than progressive brackets. The formula is D = 0.06571441 × v² + 15v, where v is the property value in thousands of dollars. Above $525,000, flat rates apply: 4.95% up to $3M, 5.75% up to $5M, and 5.95% above $5M.
How much is stamp duty on a $400,000 property in the NT?
On a $400,000 property in the Northern Territory, stamp duty is $16,514.31 using the NT formula (2025–26). Calculation: v = 400, so D = 0.06571441 × 160,000 + 15 × 400 = $16,514.31.
Do first home buyers get a discount in the NT?
No. The Northern Territory does not currently offer any stamp duty concession for first home buyers — the previous First Home Owner Discount ended on 30 June 2021. However, the $50,000 HomeGrown Territory Grant (introduced October 2024) is available for eligible buyers building or purchasing a new home. The House and Land Package Exemption (HLPE) also provides full duty relief for qualifying new house-and-land contracts settled before 30 June 2027 — available to all buyers, not just first home buyers.
When is stamp duty due in the Northern Territory?
NT stamp duty is payable within 60 days of the transaction date. Your conveyancer will calculate the duty and arrange payment to the Territory Revenue Office.
Are there many conveyancers in the NT?
The NT has a smaller property market and fewer conveyancers than mainland states. Most are based in Darwin and Alice Springs. Due to limited availability, it's advisable to engage a conveyancer early in the purchasing process.