There are a number of limitations associated with business demography data. These limitations include:
- Non-coverage of 'small' enterprises that fall below the economic significance criteria on the Statistical Business Register (SBR).
- Lags in recording business births and deaths.
- Difficulties in maintaining industrial and business classifications for smaller firms (that are primarily maintained using administrative data).
Business demography statistics are limited to economically significant individual, private-sector and public-sector enterprises that are engaged in the production of goods and services in New Zealand.
Changes to data collection/processing
Up to 2015 business demography series was based on the Stats NZ Longitudinal Business Frame (LBF).
From 2016 business demography series is based on the Statistical Business Register (SBR).