1. A land tax proposed for New Zealand could raise $3.8 billion in revenue annually based on taxing all landholdings at 1% of land value. Lower rates like 0.5% were estimated to raise less. 2. There are many issues to consider with a land tax including impacts on different sectors like farmers, disputes over land valuations, potential insolvency of highly leveraged landowners, and political pressures from groups seeking exemptions. 3. Specific sectors that could be impacted include owner-occupiers, residential and commercial rental properties, agriculture, forestry, and industry. Retired citizens with valuable land but low incomes would also be affected.