What is the Brightline Test?

The Brightline test is a New Zealand tax rule that requires you to pay income tax on any capital gain if you sell a residential property within a certain period after buying it. It's designed to discourage short-term property speculation.

Current Brightline Periods (2026)

2 years: For properties acquired before 27 March 2021 — not common anymore
5 years: For properties acquired between 27 March 2021 and 30 June 2024
2 years: For properties acquired on or after 1 July 2024 — the government shortened it back to 2 years

Currently (2026): The Brightline test is 2 years for most properties acquired after 1 July 2024. However, for new builds acquired between 27 March 2021 and 30 June 2024, the period was 5 years (now reverted).

Who is Exempt?

As a first home buyer, you may be exempt from the Brightline test if:

You sell your home and the gain is from your main home (your primary place of residence) — the "main home exclusion" applies
You have lived in the home for the majority of the time you owned it
The property is on land less than 4,500m² (i.e., not a lifestyle block or farm)

When the Brightline Test DOES Apply

Even as a homeowner, you may be caught by the Brightline test if:

You sell within 2 years and it's not your main home (e.g., an investment property you never lived in)
You have a regular pattern of buying and selling homes (the taxman may view you as a property trader)
The property is on more than 4,500m² of land
You sell a home you never actually lived in (e.g., you bought it intending to move in but never did)

How It Affects First Home Buyers

For most first home buyers: The Brightline test is unlikely to apply. If you buy a home, live in it as your main residence, and sell it after more than 2 years (or even within 2 years if it genuinely was your main home), you won't pay tax on the gain.

But be careful: If you buy a property, renovate it, and sell it within 2 years without living in it as your main home — you may owe tax on the profit.

How Much Tax Would You Pay?

If the Brightline test applies, you pay income tax at your marginal rate on the net capital gain:

Gain = selling price − purchase price − costs (agent fees, legal, improvements)
Taxed at your income tax bracket (10.5%–39%)
You must declare it in your IRD tax return

Example

You buy a $700,000 home, live in it for 18 months, then need to relocate for work. You sell for $780,000. Because it was your main home, the Brightline test does not apply — no tax on the $80,000 gain.

Record Keeping

Always keep records of:

Purchase and sale agreements
Costs of improvements (receipts, invoices)
Dates you lived in the property
Agent commissions and legal fees

If IRD ever questions a sale, you'll need to prove it was your main home.