Finance Minister Bill English told reporters at Parliament this afternoon that the tax measure was not being considered by the Government.
Asked why officials were looking into it, Mr English said: "It's a tool that's been used in other jurisdictions. We've been back two or three times to have a look at whether there's versions of it that could work.
"But the advice is always that it's a pretty inefficient tax."
There was little evidence that stamp duty had an impact on house prices, he said.
The Government has previously said that stamp duty would also breach New Zealand's free trade agreement with Korea.
The absence of stamp duty or a land tax in New Zealand is promoted by real estate companies who specialise in sales to offshore buyers.
In the United Kingdom, stamp duty is charged on all house purchases worth more than $270,000. In Hong Kong and Singapore, a stamp duty of 15 per cent is applied to foreigners.
The New Zealand Government has said a land tax would be its preferred option if non-residents were shown to be shutting New Zealanders out of the housing market.
However, Mr English said a land tax was also not part of the Government's work programme at this time.
Data released earlier this month showed that just 3 per cent of New Zealand homes were bought by non-residents over a three-month period.
However, officials warned that the data was incomplete and the real figure could be higher.
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