The consultation launched today follows changes made in late 2018, which banned purchases of residential property by overseas persons and simplified forestry investments.
Parker said this second round of reforms is focused on reducing the Act's complexity, to better support high-quality overseas investment.
It would also ensure investments are in the national interest, Parker said.
"The Government recognises that overseas investment is an important issue and we want to encourage feedback on the options.
"To grow our economy and lift productivity we need investment – both by New Zealanders and by overseas investors. We know there is scope to simplify our overseas investment rules to ensure that New Zealand remains an attractive destination for productive investment."
The Treasury will hold a series of public meetings throughout the country, including meetings with iwi and professional groups regularly involved in overseas investment.