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Recent research by Motu Economic and Public Policy (Maré & Fabling, 2019a) highlights different aspects of competition within industries in New Zealand. This work draws on a redeveloped firm-level productivity dataset (Maré & Fabling, 2019b) and forms the basis for a summary report and web-based data visualisation tool (competition explorer) (Schiff & Singh, 2019). (The data files for this tool are available in the downloads section above.)

This research was funded by the Ministry of Business, Innovation and Employment, New Zealand Productivity Commission, and The Treasury, with the Commerce Commission and Stats NZ providing advice on the project. A Cut to the Chase explains why these agencies undertook this work and some of the key messages that emerged.


Use of this material is at the user’s own risk and no responsibility is accepted for errors, omissions, or losses experienced as a result of its use. The results presented in this research are not official statistics. They have been created for research purposes from the Integrated Data Infrastructure (IDI), managed by Stats NZ. The opinions, findings, recommendations, and conclusions expressed are those of the author(s), not Stats NZ, or other Productivity Hub agencies. Access to the anonymised data used in this study was provided by Stats NZ under the security and confidentiality provisions of the Statistics Act 1975. Only people authorised by the Statistics Act 1975 are allowed to see data about a particular person, household, business, or organisation, and the results in this report have been confidentialised to protect these groups from identification and to keep their data safe. Careful consideration has been given to the privacy, security, and confidentiality issues associated with using administrative and survey data in the IDI. Further detail can be found in the Privacy impact assessment for the Integrated Data Infrastructure available from The results are based in part on tax data supplied by Inland Revenue to Stats NZ under the Tax Administration Act 1994. This tax data must be used only for statistical purposes, and no individual information may be published or disclosed in any other form, or provided to Inland Revenue for administrative or regulatory purposes. Any person who has had access to the unit record data has certified that they have been shown, have read, and have understood section 81 of the Tax Administration Act 1994, which relates to secrecy. Any discussion of data limitations or weaknesses is in the context of using the IDI for statistical purposes, and is not related to the data’s ability to support Inland Revenue’s core operational requirements.


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