Expat Tax Residency in New Zealand

New Zealand operates a worldwide income tax system for its tax residents. Inland Revenue (IRD, Te Tari Taake) administers residency rules under the Income Tax Act 2007 (ITA 2007). Understanding which test makes you a resident -- and which conditions break residency -- is the starting point for any expat tax position in New Zealand.

How does New Zealand determine tax residency?

Section YD 1 of the ITA 2007 sets out two independent tests. Satisfying either one makes a person a New Zealand tax resident. The 183-day test applies when an individual is physically present in New Zealand for more than 183 days in any 12-month period (not necessarily a calendar year). Parts of days, such as arrival and departure days, count as full days toward this threshold, and the days do not need to be consecutive. When the 183-day count is reached, resident status is backdated to the first of those days, which can create unexpected tax obligations for income received earlier in the period. The permanent place of abode (PPOA) test applies when an individual has a place where they ordinarily live in New Zealand, regardless of how long they have been physically outside the country. Ownership is not required -- a rented flat to which a person returns regularly can constitute a PPOA. In May 2025, IRD released updated interpretation statement IS 25/16 (Tax Residence), replacing the nine-year-old IS 16/03 and clarifying that home availability, family presence (partner and children), and personal connections such as possessions and stated intent to return all weigh toward PPOA status [1][6].

What factors establish a permanent place of abode?

No single factor is determinative. IRD and the courts (see Diamond v CIR [2014]) examine a cluster of ties: the availability and continuity of a dwelling in New Zealand, whether a property is maintained for personal use even if temporarily rented out; a partner and dependent children residing in New Zealand; personal possessions kept in New Zealand; frequency and regularity of returns; employment, business, and professional registrations; NZ bank accounts and investments; and subjective intention to return to live in New Zealand. A person working overseas for several years who retains a family home in New Zealand and whose spouse and children remain there will typically be found to have a PPOA despite prolonged physical absence. IS 25/16 confirmed that a dwelling in New Zealand must actually exist for family-presence and possessions factors to support a PPOA finding -- those ties alone, without any available dwelling, are insufficient [6].

How does a New Zealand tax resident stop being a resident?

Under Section YD 1 ITA 2007, once acquired, tax residency continues until both of the following conditions are simultaneously met. First, the individual must have no permanent place of abode in New Zealand -- meaning the dwelling is sold, let on a genuine long-term tenancy, or otherwise no longer available for personal use, and the family and social ties that would constitute a PPOA are severed. Second, the individual must be physically absent from New Zealand for more than 325 days in any 12-month period. Parts of days spent in New Zealand, such as departure day, do not count toward that 325-day absence. When both conditions are met, non-resident status is backdated to the first day of the 325-day absence period [1][2]. New Zealand does not impose a departure tax that deems disposal of assets on ceasing residency, which contrasts with the Australian CGT event I1 regime.

What income is taxed, and at what rates?

New Zealand tax residents are assessed on worldwide income. The five progressive marginal rates applying from 1 April 2025 are shown in the table below. These brackets were updated on 31 July 2024 when thresholds were raised [3][4].

Non-residents pay tax only on New Zealand-sourced income and are subject to Non-Resident Withholding Tax (NRWT) on investment income at standard rates of 15% (interest) and 30% (dividends), reduced under applicable double-tax agreements. New Zealand has no general capital-gains tax, though specific regimes apply: the bright-line property test (currently two years for residential property disposals post-July 2024), Foreign Investment Fund (FIF) rules for offshore portfolios above NZD 50,000 cost basis, and intent-based revenue-account provisions [3].

What is the transitional resident exemption and who qualifies?

Section HR 8 ITA 2007 provides a temporary exemption -- commonly called the transitional resident exemption or transitional residency -- for individuals who become New Zealand tax residents on or after 1 April 2006 and who were not a New Zealand tax resident at any time in the 10 years before becoming resident. Both new migrants and New Zealanders returning home after 10 or more years overseas are eligible. The exemption lasts for up to 48 months from the date the person first satisfies either of the Section YD 1 residency tests. During those approximately four years, most foreign-source income -- including overseas interest, dividends, Foreign Investment Fund income, and rental income -- is exempt from New Zealand income tax. FIF rules are also suspended during the transitional period, which is a material concession for new arrivals holding substantial offshore portfolios. Overseas employment income for services performed in New Zealand is not exempt and remains taxable as NZ-source income [5][6]. The exemption is automatic for those who qualify; an opt-out election is available before the tax return deadline for individuals where opting out produces a better outcome, for instance because they have foreign losses they wish to offset against New Zealand-source income [5]. IRD updated guidance in IS 25/16 (May 2025) warns that applying for Working for Families payments (including Best Start) -- by either the transitional resident or their partner -- terminates the transitional residence exemption earlier [1][6].

What is an IRD number and when is it needed?

An IRD number (Inland Revenue Department number) is New Zealand's equivalent of a tax file number. It is required for anyone who earns income, opens a New Zealand bank account, receives government entitlements, or makes KiwiSaver contributions. Without an IRD number, employers and financial institutions deduct tax at the maximum no-notification rate -- 39% on salary and wages and on interest. New arrivals can apply through the IRD new-arrival process, which verifies identity against Immigration New Zealand records; the IRD aims to issue numbers within two working days by text or email. Existing New Zealand residents who have not yet applied use form IR595 through an Automobile Association (AA) Driver Licensing Agent, with the number typically issued within ten working days online or twelve working days on paper. Individuals overseas can apply via the offshore individual form IR742 [1]. For most new migrants, obtaining an IRD number as soon as possible after arrival avoids the higher no-notification withholding rate on any NZ-source income during the waiting period.

For the broader New Zealand tax picture, see the New Zealand country overview, which covers the double-tax agreement network, ACC Earner Levy, and GST obligations. The rules above carry real complexity in practice -- particularly the PPOA test and the transitional resident exemption interaction with FIF and Working for Families. Consulting a Chartered Accountant Australia and New Zealand (CA ANZ) member or a registered tax agent before filing or ceasing residency is the appropriate step for any individual situation.