The government's taken aim at property speculators with investment houses bought from this Saturday subject to tough new tax rules.
The blanket exemption the family home has also been quietly removed - allowing for a scenario where if it's not used as a such for more than a year, it becomes subject to the bright-line test.
Two main changes are designed to hit investors' back pockets and discourage them buying multiple properties and flicking them off for a healthy profit.
The first is doubling the bright-line test from five to ten years, the second removing the ability for landlords to claim a tax rebate on the interest paid on their mortgage.
The Finance Minister disregarded the advice of Treasury, to push the bright-line test out to 20 years.
Here's political editor, Jane Patterson.
