New Zealand

Overview

New Zealand historically employed land-value (LV) rating — a property tax levied on unimproved land value, close to a pure land value tax — as a primary local government funding mechanism. The country's gradual shift from land-value to capital-value (CV) rating bases, and the resulting variation across municipalities, has provided researchers with a quasi-natural experimental setting for studying how property tax base choices affect urban development. New Zealand is surveyed as a significant LVT jurisdiction in the standard comparative reference Land Value Taxation Around the World (Andelson, ed., 2001), whose New Zealand chapter — in Part VI, "The Antipodes" — was written by Robert D. Keall, honorary secretary and treasurer of the New Zealand Land Value Rating Association.[7]

Historical Land-Value Rating

New Zealand's local "rates" (property taxes) could legally be levied on either a land value (LV) basis — taxing unimproved land value, functionally close to a pure land value tax — or a capital value (CV) basis that also taxes the value of buildings and improvements. This choice was made at the level of individual territorial authorities (local councils), producing a patchwork of rating bases across the country. According to the Progress and Poverty Institute's 2025 research priorities report, New Zealand's historical use of pure-LVT local funding makes it one of the more significant real-world cases of land-only taxation at the local level.

The legislative history is documented in a Lincoln Institute study by McCluskey, Grimes & Timmins (2002).[8] A national Land Tax Act 1878 first taxed the unimproved value of land (it was replaced by a capital-value property tax in 1879; improvements were partially exempted in 1891 and fully exempted in 1892 under the Liberal government — a period in which, the authors note, the ideas of John Stuart Mill and Henry George "found ready support among the reformists"). At the local level, the Rating Acts Amendment Act 1893 let councils choose capital or annual value, and the Rating on Unimproved Values Act 1896 added unimproved value as a third option — adoptable, and abandonable, only by a poll of ratepayers. The companion Valuation of Land Act 1896 defined "unimproved value" as the community-created value of the land exclusive of improvements (the term was replaced by "land value" in 1970). After 1896 "there was a steady move away from annual value and capital value rating to unimproved value rating. By the Second World War, land value based rating had become the dominant system and this trend continued through to the 1980s."[8] For rating purposes, land values and capital values are assessed every three years by councils or by Quotable Value (a state-owned valuation enterprise) using mass-appraisal methods based on property attributes and local sales evidence.[2]

Decline to Capital-Value Rating

Since the mid-1980s, a growing number of New Zealand territorial authorities have shifted from land-value to capital-value rating bases. McCluskey, Grimes & Timmins (2002) report that between 1989 and 2002 nine local authorities switched from land-value to capital-value rating (out of the 57 — of the country's 74 territorial local authorities — that initially used land values) — including Dunedin City in 1989 and Hutt City in 1997 — while "no authorities have switched to land value rating."[8] The decline has continued: an analysis prepared for the 2019 Productivity Commission inquiry found that in 2007, 47% of councils set their general rates on land value against 51% on capital value (2% on annual value), whereas by 2019 only 29% used land value against 71% capital value, with annual value no longer used at all.[9] The Gemmell, Grimes & Skidmore (2019) study describes this as a national policy framework in which the LV-vs-CV base choice was a live institutional variable, not merely a historical curiosity.

The Auckland Amalgamation (2010)

The most consequential single event in New Zealand's rating-base history was the 1 November 2010 amalgamation of the Auckland region's eight local governments — seven territorial councils plus the Auckland Regional Council — into a single unitary Auckland Council, following a Royal Commission on Auckland Governance.[2] As part of the transition, "central government determined through legislation that the base for Auckland Council property taxes (called 'Rates' in New Zealand) would be capital value."[2] Four of the seven former territorial councils — Rodney, North Shore, Waitakere, and Papakura — had levied their general rates on land value, and were thereby exogenously shifted onto CV rating; the other three (Auckland City, Manukau City, and Franklin) were already on capital-value bases.[2]

The amalgamation also changed the relative level of rates across former council areas as they were harmonised into one system, and altered Development Contributions — a separate charge levied on new and altered buildings to fund growth-related infrastructure. Because individual property owners and developers did not choose the reform and could not have anticipated its precise design, this bundle of simultaneous, centrally imposed changes has been treated by researchers as a quasi-natural experiment.

The Gemmell, Grimes & Skidmore Null Result

Gemmell, Grimes & Skidmore (2019) exploited the Auckland amalgamation to test whether the structure of local property taxation affects the pace of new building development. Using difference-in-differences-style regression analysis of building consent data, they compared former council areas that moved from LV to CV rating against areas whose rating base did not change.

The paper's central finding is a null result for new construction: the authors report that "there is little evidence of tax effects on new building development after the amalgamation, but there is stronger support for such effects on building alterations."[2] In other words, shifting away from land-value rating — a move that, under Georgist theory, should discourage new construction by re-introducing a tax penalty on improvements — was not associated with a detectable change in new building consents in the approximately two years of post-reform data available.

This wiki records this as an honest caveat on the construction evidence. The finding complicates, but does not straightforwardly refute, the broader claim that split-rate or land-value taxation encourages construction — for several reasons the authors themselves flag:

• Short post-reform window. Only about two years of post-amalgamation data were available, which may be too short to detect effects on new construction given multi-year planning, financing, and construction lags.
• Confounded, bundled reform. The amalgamation simultaneously changed the rating base, relative rate levels, and Development Contributions, making it harder to isolate which specific change drives any observed effect.
• Direction opposite to the Georgist case. Where the Pennsylvania studies (e.g. Oates & Schwab (1997) and Plassmann & Tideman (2000)) examine jurisdictions moving toward heavier land taxation, the Auckland reform moved away from a land-only base — testing the same mechanism from the opposite direction, in a setting with a much shorter observation period.

The Gemmell et al. paper is therefore best read as a complicating data point alongside the Pennsylvania evidence, not as confirming or refuting it. It is not listed as supporting evidence for the split-rate-increases-construction outcome.

Current Debate

The rating-base question remains a live one in New Zealand official policy analysis. The New Zealand Productivity Commission's inquiry into local government funding and financing (final report, November 2019) found that "rates based on (unimproved) land values cause little or no economic distortion and therefore are a highly efficient way to raise revenue," while "rates on capital value are relatively less efficient because they can disincentivise land and building development."[10] The Commission noted that "many local authorities have shifted from land value to capital value for their rating base in recent years. This is likely to have reduced economic efficiency," and observed that with 71% of councils levying general rates on capital value, "by switching to land value rating (which is possible under current law except for Auckland Council), these councils would increase the tax burden on vacant relative to developed land without causing any distortion. Indeed, such a switch to land value taxation would improve productivity and economic efficiency more generally."[10] (Auckland Council's capital-value base is fixed by its amalgamation legislation.) No legislative change of rating base has followed, and the Commission itself was disestablished in 2024; the wiki has not identified any current (2025–2026) legislative proposal to restore land-value rating.

Significance for the Georgist Case

New Zealand matters for Georgist research for two reasons:

1. As a real-world case of pure land-value taxation at scale. The historical use of LV rating across many NZ councils represents one of the more extensive real-world implementations of land-only property taxation, making it valuable for comparative study alongside Australia's state-level land taxes, Denmark's grundskyld, and Estonia's land tax.
2. As a cautionary lesson on institutional context. The Gemmell et al. null result from Auckland demonstrates that the construction effects found in Pennsylvania do not automatically generalise to every institutional setting — particularly when the reform is a short-window, confounded, centrally imposed amalgamation moving away from rather than toward land-value taxation. This underscores the importance the wiki places on honest evidence assessment: a null result is recorded as a null result, not spun as confirmation.

See Also

• Land Value Tax
• Split-Rate Taxation
• Gemmell, Grimes & Skidmore — NZ Property Tax Experiment
• Split-Rate Taxation Increases Construction
• New South Wales, Australia
• Denmark
• Estonia

Sources

1. Robert V. Andelson, ed. (2001), Land-Value Taxation Around the World, 3rd ed., Blackwell / American Journal of Economics and Sociology. Publisher — used for the survey of NZ among covered LVT jurisdictions worldwide; the chapter text itself remains paywalled, but the chapter's authorship and placement are confirmed by Andelson's introduction (source 7).
2. Norman Gemmell, Arthur Grimes & Mark Skidmore (2019), "Do Local Property Taxes Affect New Building Development? Results from a Quasi-Natural Experiment in New Zealand," The Journal of Real Estate Finance and Economics 58(2):310–333. DOI; free full text as Victoria University of Wellington Working Paper in Public Finance 08/2016 (PDF) — used for the description of NZ's LV-vs-CV rating system, the Auckland 2010 amalgamation (7 territorial councils plus the Auckland Regional Council; LV bases in Rodney, North Shore, Waitakere, Papakura; CV in Auckland City, Manukau City, Franklin), the centrally legislated capital-value base, Development Contributions, the three-yearly Quotable Value mass-appraisal system, the two-year post-reform window, and the null result for new construction (abstract quotation verified against the working-paper full text).
3. Motu Economic and Public Policy Research, working paper summary page for Gemmell & Grimes. Motu — used for the plain-language description of the Auckland amalgamation, the LV-to-CV rating shift, Development Contributions, and confirmation of the null finding.
4. Progress and Poverty Institute (2025), "Advancing Land Value Taxation: Research Priorities for 2025 and Beyond." PPI — used for discussion of NZ's historical pure-LVT local funding and shift to property tax as a research setting.
5. Gemmell, Grimes & Skidmore — wiki summary — used for cross-referencing the research page's detailed treatment of the study's methodology, findings, and limitations.
6. Split-Rate Taxation Increases Construction — wiki outcome page — used for the contextual framing of the Gemmell et al. null result as an honest caveat on the Pennsylvania construction evidence.
7. Robert V. Andelson, introduction to Land-Value Taxation Around the World, 2nd ed. (1997), reproduced at the School of Cooperative Individualism — used for the identity of the NZ chapter author (Robert D. Keall, honorary secretary and treasurer of the New Zealand Land Value Rating Association), the chapter's placement in Part VI ("The Antipodes"), and Andelson's observation that "serious reversals have occurred in New Zealand and Denmark, where it had seemed most solidly entrenched."
8. William McCluskey, with Arthur Grimes & Jason Timmins (2002), Property Taxation in New Zealand, Lincoln Institute of Land Policy Working Paper WP02WM1. PDF — used for the legislative history (Land Tax Act 1878; Rating Acts Amendment Act 1893; Rating on Unimproved Values Act 1896 and its ratepayer-poll requirement; Valuation of Land Act 1896; the 1970 terminological change), the dominance of land-value rating from the Second World War through the 1980s, the swing back to capital value since the mid-1980s, and the count of nine LV-to-CV switches (out of 57 LV authorities of 74 TLAs) between 1989 and 2002 with none in the reverse direction.
9. Insight Economics (Fraser Colegrave & Tom Winter) (2019), Analysis of the Current and Past Use of Council Rating Tools in New Zealand, final report to the New Zealand Productivity Commission, 7 May 2019. PDF via NZ Treasury archive — used for the 2007 (51% CV / 47% LV / 2% AV) and 2019 (71% CV / 29% LV) general-rate base shares.
10. New Zealand Productivity Commission (2019), Local Government Funding and Financing: Final Report, November 2019. PDF via NZ Treasury archive — used for the Commission's findings on the efficiency of land-value versus capital-value rating and its observation that a switch back to land-value rating is possible under current law except for Auckland Council.