Bright-Line Test Date Calculator NZ

This bright-line test date calculator helps you check whether the sale of a residential property in New Zealand falls inside the bright-line period, which can make any gain taxable. The bright-line test treats profit on a property sold within a set window as taxable income, even when you would not otherwise think of yourself as a property trader. From 1 July 2024 the period was shortened to two years, so a property sold more than two years after you acquired it generally sits outside the test, while a sale inside two years can be caught. To use the tool, enter the date you acquired the property and the date you sold it, and it tells you whether the sale falls within the two-year period, how many days you held the property, and the date the bright-line period ends. Property owners, investors and people selling a former rental or second home use this to get an early read on their exposure before they talk to an accountant. A few cautions matter. The acquisition and sale dates that count for the test are specific legal dates, often the date of the binding sale agreement rather than settlement, so confirm which dates apply to your deal. The main home is usually excluded, and other rules and exceptions can apply, including for inherited property and relationship settlements. This tool only checks the timing against the two-year window, it does not calculate any tax owed or decide whether an exclusion applies. Use it as a quick first step, then get advice from a tax professional or Inland Revenue before you make decisions.

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Within period - potentially taxable
Bright-line status
Days held669
Period ends2026-08-01

Bright-line period is 2 years from acquisition for properties under the rules from 1 July 2024. Estimate only, not financial or tax advice.

How it works

The bright-line period ends exactly two years after the acquisition date. If the sale date is on or before that end date the sale is within the period and any gain may be taxable, otherwise it is outside the period. Days held is the count of days between acquisition and sale.

Worked example

With an acquisition date of 1 August 2024 the two-year period ends on 1 August 2026. A sale on 1 June 2026 is before that end date, so it falls within the period and is potentially taxable, with 669 days held.

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Data sources: the rates and thresholds on this page are maintained against Inland Revenue. Figures are checked twice monthly.

Frequently asked questions

How long is the bright-line period now?

From 1 July 2024 the bright-line period is two years. A residential property sold more than two years after it was acquired generally falls outside the test, while a sale within two years can be taxable on any gain.

Which dates does the test use?

The relevant dates are specific legal dates and are often the dates of the binding sale and purchase agreements rather than settlement. Because this affects whether you are inside the window, confirm the correct dates with your lawyer or accountant.

Does the bright-line test apply to my family home?

Usually not. The main home is generally excluded, and other exceptions exist for inherited property and relationship property. This tool only checks timing, so confirm whether an exclusion applies before relying on the result.