NZ Property Sale Tax Triggers Calculator (All Rules)

This calculator checks a property sale against all eight land sale tax rules in the Income Tax Act 2007, not just the bright-line test that most people focus on. You enter the property type, the acquisition and sale dates, whether you had any intention of resale when you bought, whether it was used as your main home, whether you or an associated person is a property dealer, developer or builder, whether you built on the land yourself, whether the sale involves a subdivision or rezoning and the percentage of value uplift the rezoning caused, plus your cost base, sale price and marginal tax rate. Each rule, purpose of resale, bright-line, dealer, developer, builder, subdivision and rezoning, is tested independently, and the calculator returns a verdict banner showing whether the sale is taxable, borderline or likely clear, together with a rule-by-rule table showing which specific provisions caught or missed your situation. Where any rule applies, it also works out an estimated capital gain, the tax owed at your marginal rate, and your net proceeds after tax. Because only one rule needs to catch a sale to make it taxable, use this to see the full picture before you sell rather than relying on the bright-line test alone. The tax figures are indicative estimates only; each provision carries technical sub-tests and exclusions, so get professional advice before relying on the result.

Updated April 2026  Income Tax Act 2007 ss CB 6, CB 6A, CB 7, CB 8, CB 9, CB 12, CB 13, CB 14.
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Property basics

Intention and use

Section CB 6 - purpose of resale catches sales regardless of timeframe.

Business / pattern tests

Subdivision / rezoning

%
Section CB 14 only catches if rezoning drove 20% or more of the uplift.

Financials

$
$

The eight land sale rules

  • s CB 6 - Purpose of resale: Intention-based, no time limit. Broadest provision.
  • s CB 6A - Bright-line test: 2 years for sales from 1 July 2024. Residential only.
  • s CB 7 - Land dealer: Business of dealing in land. All sales taxable, no holding period.
  • s CB 8 - Developer: Business of developing/dividing land. All sales taxable.
  • s CB 9 - Builder (10 years): Sales within 10 years of building work by you or associated persons.
  • s CB 12 - Minor subdivision (10 years): Subdivisions sold within 10 years with more-than-minor work.
  • s CB 13 - Subdivision scheme: Undertaking or scheme involving development. No time limit.
  • s CB 14 - Rezoning (10 years): Sales within 10 years of rezoning where rezoning drove 20%+ of value uplift.

What's NOT on this list

Farmland (mostly excluded from bright-line and residential rules). Business premises (excluded from bright-line but can be caught by dealer/purpose rules). Main home sales (excluded from bright-line, subdivision and rezoning rules under specific conditions). Shares in a company that owns land (different rules - "land-rich company" anti-avoidance). Overseas property owned by NZ tax residents (bright-line can still apply).

Sources

This is a screening tool only. Property sale tax is fact-specific and each provision has technical sub-tests, exclusions, and associated-person rules. Get professional tax advice before selling property where any of these rules might apply.

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