Prime Minister John Key says the Government reserves the right to apply a land tax in order to restrict overseas buyers of residential property in New Zealand.
But the Government was waiting for better data on whether there was actually a problem.
His own "gut instinct" was that Chinese buyers in the Auckland market were New Zealand-based.
Mr Key made his comments on TVNZ's Q and A during an interview conducted in China when he was there last week.
Any such tax would not apply to investors from a specific county.