Bright-Line Test
The bright-line test taxes profits from selling residential property if the property was acquired and sold within a specified period. Since 1 July 2024, a uniform 2-year bright-line period applies to any residential property sale — if the date you sign the sale agreement is within 2 years of the date your title was registered, the profit is taxable, regardless of when you originally bought it. This replaced the earlier tiered system, under which the period depended on acquisition date (10 years for property acquired between 27 March 2021 and 30 June 2024, 5 years for property acquired between 29 March 2018 and 26 March 2021, and 2 years for property acquired between 1 October 2015 and 28 March 2018) — those longer periods no longer apply to sales completed on or after 1 July 2024.
The test applies to the profit (sale price minus purchase price and allowable costs). This profit is taxed as ordinary income at your marginal tax rate — it is not a separate capital gains tax. The main home exemption generally applies if the property was your primary residence for the majority of the ownership period.
Other exceptions include inherited property and property transferred under a relationship property agreement. New builds were never exempt: under the 10-year rules a new build bought within 12 months of becoming new build land had a 5-year period instead. If you're selling an investment property, it's essential to check whether the bright-line test applies before completing the sale.
How it works
The exact dates that count for acquisition and disposal follow specific IRD rules that don't always match the date you think of as 'buying' or 'selling' — for example, off-the-plan purchases and settlement timing can affect which date starts the clock. If you're close to the 2-year boundary, it's worth confirming your specific acquisition and disposal dates against IRD's guidance rather than assuming from memory.
The main home exemption isn't all-or-nothing based on ever having lived there — it turns on whether the land was used predominantly, for most of the bright-line period, for a dwelling that was your main home. A property used mostly as a rental with only a brief period of owner-occupation is less likely to qualify than one you lived in for most of that period.
Because bright-line profit is added to your other taxable income and taxed at your ordinary marginal rate rather than a separate capital gains rate, a large bright-line gain in a single year can itself push part of your income into a higher bracket for that year — and if the resulting residual income tax exceeds $5,000, it can also trigger a provisional tax obligation for the following year.
Example: bright-line profit taxed at marginal rates
An investor buys a rental property for $600,000 and sells it 18 months later — within the 2-year bright-line period — for $700,000, after $20,000 of allowable costs such as agent and legal fees.
Bright-line profit = $700,000 − $600,000 − $20,000 = $80,000.
The profit is added to the investor's other income and taxed through the normal brackets. If their other income is $85,000, the whole $80,000 profit falls inside the 33% band ($78,101–$180,000), so tax on it = 33% x $80,000 = $26,400. With lower other income, part of the profit would be taxed at 30% instead; with very high income, part could reach the 39% band.
Frequently asked questions
Does the bright-line test apply if I sell at a loss?
If you sell within the bright-line period for less than your cost base, you generally have a bright-line loss rather than taxable income, which may be able to offset other taxable income in some circumstances — the rules around residential property losses are complex, so check current IRD guidance for your situation.
Is bright-line profit taxed separately, like a capital gains tax rate?
No — New Zealand doesn't have a separate capital gains tax; bright-line profit is added to your other taxable income for the year and taxed at your ordinary marginal income tax rate, so a large gain can itself push part of your income into a higher bracket.
Does the bright-line period reset if I renovate or change how I use the property?
No — the bright-line period runs from your acquisition date to your disposal date regardless of how you used the property in between; what does affect the outcome is whether the land was used as your main home for most of the bright-line period.
Related Terms
Income Tax
New Zealand income tax is calculated using a progressive bracket system.
IRD
Inland Revenue Department (IRD), commonly known as Inland Revenue or simply IRD, is the New Zealand government agency responsible for collecting taxes, distributing social support payments, and enforcing tax compliance.
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