"It has become pretty much unacceptable in the developed world at least to be running a tax haven that undermines other people's tax bases," English said, referring to the controversy over Luxembourg.
Fletcher Building chief executive Mark Adamson, who is representing New Zealand on the sidelines of the G20 meeting as part of the B20 business group, said he expected a breakthrough on tax, following talks with Australian Treasurer Joe Hockey and Prime Minister Tony Abbott.
"They were quite hopeful that the base erosion, as they call it, would be resolved by, in principal, taxing earnings where they are accrued rather than multinationals moving them around the world for tax advantage," Adamson said. "I think there's going to be a breakthrough this weekend."
New Zealand expected to be part of an international plan to combat tax avoidance being developed by the OECD, English said. The first steps would be in 2016/17.
"Multinational initiatives usually struggle to get momentum, this one is really moving along even though it's quite a difficult area."
English said tax payments needed to be transparent.
"If a company is present in New Zealand, we want to be able to understand whether and where they are paying tax elsewhere, so I think the transparency is the first step."