Stamp duty calculator Northern Territory
Stamp duty on a Northern Territory purchase, worked out with the Territory Revenue Office formula, with the House and Land Package Exemption and the HomeGrown and FreshStart grants.
Checked by Radif Partners · Editorial policy · Methodology
NT stamp duty
$37,125
Territory stamp duty formula · 4.95 % of the price
| Duty at the general scale | $37,125 |
| Duty payable | $37,125 |
| Total to the revenue office | $37,125 |
Contract signed in 2026-27, residential property, one buyer profile for the whole purchase. How this is calculated
The Northern Territory does not use tax brackets for homes up to $525,000. Its calculator applies a curve instead: take the value in thousands of dollars, V, and duty is 0.06571441 times V squared plus 15 times V. On $400,000 that gives $16,514. Above $525,000 the curve gives way to a flat 4.95 % of the whole value, rising to 5.75 % from $3,000,000 and 5.95 % from $5,000,000. Duty is due within 60 days of signing, or at settlement if that is earlier. There is no first home concession on an established home. Help goes to new homes: a house and land package bought from a builder in one contract is exempt, and the HomeGrown Territory Grant pays first home buyers $50,000 on a new home with no price cap.
A formula instead of brackets
The Territory Revenue Office's online calculator contains the formula that this page uses, read from its code. For values up to $525,000:
duty = 0.06571441 × V² + 15 × V, where V is the value divided by 1,000.
Above that point the method changes to a single percentage of the whole value, stepping up twice at the very top of the market.
| Value | Stamp duty |
|---|---|
| up to $525,000 | formula above |
| $525,000 to $3,000,000 | 4.95 % of the whole value |
| $3,000,000 to $5,000,000 | 5.75 % of the whole value |
| $5,000,000 and over | 5.95 % of the whole value |
The formula and the flat rate meet almost exactly at $525,000, so there is no jump at the join. Because the formula has a squared term, the effective rate climbs steadily: 2.81 % at $200,000, 4.13 % at $400,000, then the flat 4.95 % from $525,000.
Duty and grants at Northern Territory prices
| Price | Established, any buyer | New home, first buyer: grant | New home, other buyer: grant | House and land package: duty |
|---|---|---|---|---|
| $350,000 | $13,300 | $50,000 | $30,000 | $0 |
| $450,000 | $20,057 | $50,000 | $30,000 | $0 |
| $525,000 | $25,988 | $50,000 | $30,000 | $0 |
| $650,000 | $32,175 | $50,000 | $30,000 | $0 |
| $800,000 | $39,600 | $50,000 | $30,000 | $0 |
| $1,000,000 | $49,500 | $50,000 | $30,000 | $0 |
The table shows where Territory support goes. On an established home nobody gets a break. On a new one, the HomeGrown grant is larger than the duty at every price in the table, and a package bought from a builder removes the duty too.
The House and Land Package Exemption
For contracts from 1 July 2022 to 30 June 2027, there is no stamp duty when you buy a house and land package from a building contractor in one transaction. It has no means test and no value cap, and it is not limited to first home buyers. You must live in the home within 12 months of completion, for six continuous months. The NT house and land page covers what counts as a package.
HomeGrown Territory and FreshStart grants
For contracts from 1 October 2024 to 30 September 2027, the HomeGrown Territory Grant pays $50,000 to first home buyers of a new home, including off the plan and owner-builders, with no price cap. Vacant land alone does not qualify. Buyers who have owned before can claim the FreshStart New Home Grant of $30,000 on a new home over the same period. Both require you to live in the home for 12 months. Applications close on 30 September 2028 for HomeGrown and 31 December 2027 for FreshStart. Run your own case:
Northern Territory new home: duty and grant
HomeGrown Territory Grant
$50,000
| Stamp duty | $30,690 |
| Grant minus duty | $19,310 |
| Duty rule | Territory stamp duty formula |
The full conditions are on the NT HomeGrown grant page.
Paying within 60 days
Territory duty falls due 60 days after the contract is signed, or at settlement if earlier. On a contract with a long settlement, for example a home still being built, that date can arrive well before the keys. Budget for it from the day you sign.
The Territory among the states
For a repeat buyer of an established home the NT is one of the dearer places: $29,700 on $600,000, against $12,850 in Queensland and $22,515 in WA. For foreign buyers it is among the cheapest, with no surcharge. The eight-state comparison shows where your price lands.