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.
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).
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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