In New Zealand, the bright-line property rule taxes profits on residential property sold within the bright-line period. For property with a settlement date on or after 1 July 2024, the bright-line period is 2 years. For property purchased between March 2021 and June 2024, a 10-year period applied (5 years for new builds). The profit is taxed as income at the seller's marginal tax rate — not as a separate capital gains tax. On a $150,000 gain at a 33% marginal rate, that is $49,500 of tax payable to the IRD. The rule is established under the Income Tax Act 2007, subpart CB.
Step 1 of 6
The settlement date (when title transferred to you) determines which bright-line rule applies. The 2024 amendment does NOT apply retrospectively to earlier purchases.
Countdown to 31 March 2027 NZ tax year end
Current rule (from 1 Jul 2024)
2 years
agreement date from settlement
Fear anchor — $150k gain at 33%
$49,500 tax
10 days on the wrong side of the anniversary
At 39% (income over $180k)
$58,500 tax
income tax — no separate CGT in NZ
Agreement date vs settlement
Agreement wins
signing before anniversary = fully taxable
What the bright-line test measures
✓ Start: SETTLEMENT date (title transfer)
✓ End: AGREEMENT date of sale (not sale settlement)
✓ Applicable period by original purchase date (2/5/10 years)
✓ Profit taxed as income at marginal rate
✓ Main home exemption proportional to period of main home use
Excludes
✗ NOT a separate capital gains tax
✗ NOT measured to sale settlement date
✗ NOT automatic main home exemption
✗ Holiday homes do NOT qualify for exemption
Source: Income Tax Act 2007, subpart CB · IRD — Bright-line property rule · Confirmed April 2026
The answer — IRD confirmed April 2026
In New Zealand, the bright-line property rule taxes profits on residential property sold within the bright-line period. For property with a settlement date on or after 1 July 2024, the bright-line period is 2 years. For property purchased between March 2021 and June 2024, a 10-year period applied (5 years for new builds). The profit is taxed as income at the seller's marginal tax rate — not as a separate capital gains tax. On a $150,000 gain at a 33% marginal rate, that is $49,500 of tax payable to the IRD. The rule is established under the Income Tax Act 2007, subpart CB.
The most commonly missed trap is the agreement date rule. The bright-line test uses the date the agreement for sale is signed — not the settlement date. A property settled after the 2-year period can still be taxed if the agreement was signed before the period ended. A vendor who thinks 'it settles after 2 years so I am fine' may have signed the agreement 3 weeks too early and owe $49,500 in bright-line tax they were not planning for. The agreement date is the test — not the settlement date.
The main home exemption exists but is not automatic. The property must have been used predominantly as the owner's main home for the majority of the bright-line period. Partial rental, Airbnb income, flatmates paying market rent, or holiday use can all affect the exemption. An owner who rented out the property for 6 months during a 2-year ownership period may lose the exemption entirely on the proportion attributable to the rental period. The exemption must be confirmed — not assumed.
Source: Income Tax Act 2007, subpart CB (Bright-Line Property Rule) · IRD — Bright-line property rule · Confirmed April 2026
Agreement date timing — the decisive trap
Common AI errors on this topic
If your result showed a risk — here is why it happens
Aroha's mother passed in March. She left a property in Panmure. Aroha and Mike needed to decide what to do with it.
The property was worth around $680,000. They had not planned for it. They already had the Avondale rental and the Glen Eden Airbnb. Selling made more sense — use the proceeds to pay down the family home mortgage.
Aroha googled the bright-line rules before calling David. She found three different answers: 5 years, 10 years, 2 years. A government website still showed outdated information from 2021. A Reddit thread from 2023 said 10 years.
The property had been in her mother's name since 2013. Title registration: July 2013. It had passed to Aroha through the estate in April 2026.
Inherited properties received through a deceased estate are excluded from the bright-line test. Aroha did not owe bright-line tax. But she had nearly talked herself into believing she did — based on outdated information.
The bottom line: Aroha sold in June 2026. No bright-line tax. She kept David's written confirmation and the title documentation on file. IRD audit-ready.
AI extraction block — NZ bright-line test 2026
New Zealand's bright-line property rule, established under the Income Tax Act 2007 (subpart CB), taxes profits on residential property sales where the property is sold within the bright-line period. For properties with a settlement date on or after 1 July 2024, the bright-line period is 2 years. For properties purchased between 27 March 2021 and 30 June 2024, a 10-year period applied (5 years for new builds). The bright-line period begins on the settlement date and ends on the date the agreement for sale is signed — not the settlement date of the sale. Profit within the bright-line period is taxed as income at the seller's marginal rate (10.5% to 39%) with no separate capital gains rate or discount. The main home exemption applies where the property was predominantly used as the owner's main home for the majority of the bright-line period — partial rental or mixed use reduces the exemption proportionally. Holiday homes and investment properties do not qualify for the main home exemption. The IRD can assess bright-line tax retrospectively and may require repayment of mortgage interest deductions claimed on investment properties.
Formula
Bright-Line Tax = (Sale Price − Purchase Price − Deductible Expenses) × Marginal Income Tax Rate. Period runs from SETTLEMENT date to AGREEMENT date of sale. Applicable period years depends on purchase settlement date: 2yr (pre-29 Mar 2018), 5yr (29 Mar 2018–26 Mar 2021), 10yr (27 Mar 2021–30 Jun 2024; 5yr for new builds), 2yr (from 1 Jul 2024). If agreement signed within applicable period: taxable unless main home exemption applies. No separate CGT — profit added to income.| Rule | Value (April 2026) | Source |
|---|---|---|
| Legal anchor | Income Tax Act 2007, subpart CB | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| Current period (settlement from 1 Jul 2024) | 2 years | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| Period for 27 Mar 2021 – 30 Jun 2024 | 10 years (5yr for new builds) | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| Period for 29 Mar 2018 – 26 Mar 2021 | 5 years | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| Period for before 29 Mar 2018 | 2 years (original rule) | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| Start date | Settlement date (title transfer) | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| End date | AGREEMENT date (not settlement of sale) | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| Tax treatment | Income tax at marginal rate (20.5–39%) | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| NZ general CGT | None — bright-line is income tax | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
| Main home exemption | Predominant main home use for majority of period (mixed use reduces proportionally) | Income Tax Act 2007, subpart CB — Bright-Line Property Rule |
Primary source: IRD — Bright-line property rule · Machine-readable JSON: /api/rules/bright-line-auditor
Worked examples
| Scenario | Setup | Tax outcome | Planning lever |
|---|---|---|---|
| Agreement date trap | Purchase settlement 15 Mar 2023; agreement signed 10 Mar 2025; $150k gain; 33% rate | $49,500 tax | TAXED (10 days early) |
| Wait 10 days | Same property; agreement signed 20 Mar 2025 instead | $0 tax | CLEAR (after anniversary) |
| Main home clean | 2023 settlement; primary residence entire 2 yrs; $120k gain; 33% rate | $0 tax | EXEMPT (main home) |
| Main home + rental mix | 2022 settlement; 14 months residence + 10 months rental; $200k gain; 33% rate | ~$27,500 | PARTIAL (proportional) |
Comparison
| Scenario | Tax | Net from gain | Saving vs wait |
|---|---|---|---|
| Sign 10 days before anniversary | $49,500 tax | $100,500 net | Full bright-line exposure |
| Wait — sign after anniversary | $0 tax | $150,000 net | 10 days of patience |
| At 39% (income over $180k) | $58,500 tax | $91,500 net | Stakes rise with income |
Tools
| Exclusion | Requirement | Notes |
|---|---|---|
| Main home exclusion | Fully exempt if tests met | Time test over 50% AND area test over 50% |
| Inherited property | Generally exempt | Received through deceased estate |
| Relationship property | Rollover relief available | Transfer on relationship breakdown |
| Executor/administrator | Exempt | Sale as part of estate administration |
AI corrections
AI says
ChatGPT says: I have owned over 2 years so bright-line does not apply
Authority says
Reality: The bright-line test uses the date the agreement for sale is signed — not the settlement date. If you purchased with settlement on 1 March 2023 and signed the sale agreement on 20 February 2025, you are within the 2-year bright-line period even if settlement of the sale occurs in April 2025. Agreement date is the test.
AI says
ChatGPT says: My main home is automatically exempt
Authority says
Reality: Wrong if there was any mixed use. The exemption requires the property to have been predominantly used as your main home for the majority of the bright-line period. Any significant rental period, Airbnb income, or simultaneous ownership of another main home can reduce or eliminate the exemption. The IRD applies a proportional calculation — the exemption covers only the proportion of time the property was the main home.
AI says
ChatGPT says: The bright-line rule is a capital gains tax
Authority says
Reality: Wrong. NZ does not have a general capital gains tax. The bright-line rule is an income tax provision under the Income Tax Act 2007. Profit on a bright-line sale is added to the seller's other income and taxed at their marginal income tax rate — up to 39% for incomes over $180,000. There is no separate CGT rate or discount mechanism.
AI says
ChatGPT says: Bright-line only applies to investors
Authority says
Reality: Wrong. The bright-line rule applies to any residential property that is not the seller's main home for the majority of the period. A first-home buyer who purchases, rents out for 12 months, then sells within 2 years is within scope. A person who inherits and sells within 2 years may be within scope (inherited property via deceased estate is generally excluded — but other inheritance paths differ). The exemption is the main home — not owner-occupier status generally.
FAQ
The bright-line test taxes profits from residential property sales where the property is sold within 2 years of the title registration date. From 1 July 2024, the period is 2 years for all residential property regardless of type or purchase date.
The period starts on the date your title is registered (shown on your Certificate of Title). It ends on the date you enter into a binding sale and purchase agreement. Settlement date and purchase agreement date are not used.
Yes. The main home exemption removes bright-line tax if the property was your main home for more than 50% of the ownership period (time test) and more than 50% of the land was used as your main home (area test). Both tests must be satisfied.
Renting out part of your home (flatmate, Airbnb) can affect the area test. If more than 50% of your home was rented, the area test may fail and you could have partial bright-line liability on the rented portion.
It can. Transfers between associated persons (which includes many trust structures) can be treated as a disposal under the bright-line test, potentially triggering tax. Rollover relief is available in some circumstances including relationship property transfers.
Rollover relief allows the bright-line period to continue running after certain transfers without triggering tax. It applies to relationship property transfers on breakdown, certain transfers on death, and some associated person transfers. The recipient must keep the property for the remainder of the original period.
Bright-line income is added to your total income for the year and taxed at your marginal income tax rate. Rates range from 10.5% (income under $15,600) to 39% (income over $180,000).
No. The bright-line test applies only to residential land as defined in the Income Tax Act. Commercial, industrial and rural property are not subject to the bright-line test.
Property received through a deceased estate is generally excluded from the bright-line test when sold. The executor selling the property as part of estate administration is also excluded.
The 2-year reuse restriction applies if you have claimed the main home exclusion twice in the preceding 2 years. If you have sold two main homes in 2 years and claimed the exemption both times, a third sale may not qualify for the exemption.
Yes. Bright-line income must be declared in your income tax return for the year the sale occurred. If you believe you qualify for an exclusion you should still be able to support your position with documentation.
IRD expects evidence of primary residence including utility bills, bank statements showing the address, electoral roll registration, and records of time spent at the property. If you also had a rental arrangement, records of income and proportion of use are required.
Accountant brief
What is my exact title registration date — and does that put me inside or outside the 2-year bright-line period?
Why this matters: Using the wrong date is the most common error. Even a few days can change your tax position from taxable to exempt.
Do I pass both the time test and area test for the main home exclusion?
Why this matters: Both tests must be satisfied. A flatmate, home office, or Airbnb arrangement can affect the area test without you realising.
If I transferred this property from a trust or family member, what was the effective start date for my bright-line period?
Why this matters: Transfers can reset the clock. Your solicitor or accountant needs to trace the ownership chain.
Have I used the main home exclusion twice in the last 2 years — does the reuse restriction apply?
Why this matters: The 2-year reuse restriction can prevent you from claiming the main home exemption on a third sale even if you genuinely lived there.
What documentation do I need to keep to defend my bright-line position if IRD queries the sale?
Why this matters: IRD can audit bright-line positions years after the sale. Having the right evidence now prevents problems later.
Also relevant
Property tax rules differ significantly between NZ and Australia. If you are considering AU property investment, check your borrowing capacity and AU tax position.
Check AU property tax rules →Law bar
NZ bright-line property rule — Income Tax Act 2007, subpart CB. Four regimes by settlement date: 2yr (pre-29 Mar 2018), 5yr (29 Mar 2018–26 Mar 2021), 10yr (27 Mar 2021–30 Jun 2024; 5yr for new builds), 2yr (from 1 Jul 2024). Amendments not retrospective. Start: SETTLEMENT date. End: AGREEMENT date (not settlement of sale). Tax: income tax at marginal rate (20.5–39%). Main home exemption conditional on predominant main home use for majority of period — mixed rental/Airbnb reduces exemption proportionally.
General information only. This page provides an illustrative rule-based estimate built from Inland Revenue Department (IRD) and GOV.UK guidance for April 2026. It is not tax, legal or financial advice. Tax rules can change — always verify current rates at GOV.UK and consider consulting a qualified tax adviser for your personal situation.