The brightline test taxes capital gains on residential property sold within a set period. In New Zealand, the current brightline period is 2 years, following the National-led government’s reduction from the previous 5-year and 10-year rules. If you sell a residential property within 2 years of buying it and it doesn’t qualify for an exemption, any profit is treated as income and taxed at your marginal tax rate.
The NZ brightline test taxes gains on residential property sold within 2 years of purchase (from 1 July 2024). Your main home is exempt. The net gain is added to your income in the year of sale and taxed at your marginal rate — up to 39% if total income exceeds $180,000.
What the Brightline Test Is — and What It Isn’t
New Zealand doesn’t have a general capital gains tax. The brightline test is a specific, time-limited rule that taxes gains on residential property sales — it is not a broad property tax on all gains.
Key facts:
- Brightline period: 2 years (from 1 July 2024 onward)
- Tax applied to: gain on sale (sale price minus cost of acquisition, improvements, and eligible expenses)
- Tax rate: your marginal income tax rate (up to 39% if your total income including the gain exceeds $180,000)
- Administered by: Inland Revenue (IRD)
- Rules apply to: residential land in New Zealand
History of the Brightline Period in NZ
| Period | Brightline duration | Government |
|---|---|---|
| October 2015 – March 2018 | 2 years | National |
| March 2018 – March 2021 | 5 years | Labour |
| March 2021 – July 2024 | 10 years (new builds: 5 years) | Labour |
| From 1 July 2024 | 2 years | National (coalition) |
Properties purchased on or after 1 July 2024 are subject to the current 2-year rule. The date of acquisition for brightline purposes is generally the date the title transfers (settlement date), not the unconditional contract date.
What Property Is Subject to the Brightline Test?
The brightline test applies to residential land — broadly, land with a dwelling or capable of having one built on it.
Subject to brightline:
- Investment rental properties
- Holiday homes and baches
- Vacant residential sections
- Bare land zoned residential
Not subject to brightline (main exemptions):
Main home exemption
Your principal place of residence is exempt. This is the home you primarily live in. You can only have one main home at a time, and if you’ve used the property as your main home for most of the ownership period, any sale gain is exempt.
Māori land
Māori freehold land is exempt from the brightline test.
Relationship property transfers
Transfers of property between spouses or partners as part of a relationship property settlement are generally exempt.
Inherited property
Property inherited from a deceased estate is exempt.
Business premises
Commercial property used for business is not subject to the residential brightline test (though other tax rules may apply).
How the Tax Is Calculated
If the brightline test applies to your sale, the net gain is added to your other income for the tax year and taxed at your marginal rate.
Net gain calculation:
| Item | Amount |
|---|---|
| Sale price | $850,000 |
| Less: acquisition cost (purchase price) | ($700,000) |
| Less: legal and transaction costs on purchase | ($3,000) |
| Less: capital improvements during ownership | ($25,000) |
| Less: legal and transaction costs on sale | ($3,000) |
| Taxable brightline gain | $119,000 |
Note: you cannot deduct interest costs under the brightline calculation (the interest deductibility rules are separate from brightline).
Tax owed: If your total income for the year (salary + brightline gain) is $250,000, the brightline gain is taxed at 39% = $46,410 in additional tax.
If your total income including the gain is between $70,001 and $180,000, tax on the gain is 33%.
Interest Deductibility and the Brightline Test
The restoration of interest deductibility on rental properties (phased back in from 2023 under the National government, fully restored from 1 April 2025) is separate from the brightline test. Interest deductibility affects your rental income tax each year — brightline applies only when you sell.
See Rental Income Tax NZ for the annual tax treatment of investment properties.
How the Start Date Is Determined
The brightline clock starts on the date the title transfers to you — typically settlement day, not the unconditional contract date.
Example:
- Unconditional date: 10 June 2026
- Settlement (title transfer): 5 July 2026
- Brightline clock starts: 5 July 2026
- 2-year brightline period ends: 5 July 2028
- If sold before 5 July 2028 without an exemption, brightline applies
The end date is when you enter into the agreement to sell, not when settlement occurs.
Common Brightline Scenarios
Scenario 1: Investment property, sold within 2 years — brightline applies
Bought: October 2025. Sold: April 2026 (6 months later). No main home exemption. Brightline applies — gain is taxable income.
Scenario 2: Main home sold within 2 years — exempt
Bought: January 2025. Lived in it as primary residence throughout. Sold: December 2026. Main home exemption applies — no brightline tax.
Scenario 3: Main home, but rented for part of the period
If you lived in the property for most of the period but rented it out for a period, you may have partial brightline exposure. IRD assesses whether the property was your “main home” for the majority of the ownership period.
Scenario 4: Property bought pre-July 2024
If you bought an investment property in 2022 under the 10-year rule, and you sell in 2027, your brightline period is still determined by the rules at the time you acquired it. You may need to check which rules apply. IRD’s guidance confirms properties acquired before 1 July 2024 may still be subject to the 5-year or 10-year rules depending on the purchase date.
Brightline and Loss-Making Sales
If you sell a property at a loss under brightline, you can offset the brightline loss against other brightline gains — but not against ordinary income. If you have no other brightline gains in the year, the loss may be carried forward to future years.
Obligations When You Sell
When you sell residential property, your lawyer and IRD will be notified via the Land Transfer process. You’re required to self-assess and declare any brightline liability in your IR3 tax return for the relevant income year.
IRD has the ability to audit property transaction history. Failing to return a brightline gain correctly can result in penalties and interest.
Minimising Brightline Exposure
Hold for 2 years The simplest strategy. If you’re not actively in a position where you must sell, hold the property beyond 2 years.
Track all costs accurately Every dollar of acquisition cost, legal fee, stamp duty equivalent, and capital improvement reduces the taxable gain. Keep all invoices and records.
Understand the main home exemption If you move into a property and genuinely use it as your primary residence, the exemption applies. Ensure your documentation (mail, enrollment, utility accounts) reflects this.
Seek tax advice before selling If you’re within the 2-year period, get advice from an accountant or tax specialist before signing a sale agreement. IRD’s brightline rules have several nuances that interact with other provisions.
Frequently Asked Questions
What is the brightline test in New Zealand?
The brightline test is a targeted rule that taxes gains on residential property sold within a set period of purchase. As of 1 July 2024, that period is 2 years. Any gain from a sale within this window is treated as taxable income, added to your other income, and taxed at your marginal rate.
Is my main home exempt from the brightline test in NZ?
Yes. Your main home (principal place of residence) is exempt. You can only have one main home at a time, and the exemption applies where the property was your primary residence for most of the ownership period. If you’ve been renting it out for part of the time, partial brightline liability may apply.
How long is the brightline period in New Zealand in 2026?
As of 2026, the brightline period is 2 years. This was reduced from the previous 10-year rule (for properties acquired March 2021–June 2024) by the National-led government, effective 1 July 2024.
What tax rate applies to brightline gains in NZ?
Brightline gains are added to your other income for the tax year and taxed at your marginal income tax rate. If the gain pushes your total income above $180,000, the top marginal rate of 39% applies to that portion.
When does the brightline clock start in NZ?
The brightline period starts from the date the property title transfers to you — settlement day, not the unconditional contract date. It ends when you enter into the agreement to sell, not when settlement of the sale occurs.