The National Party says as many as 570,000 businesses will be caught by a capital gains tax if it goes ahead.
It says small businesses make up 97 percent of the business sector but the government is ignoring the damage they'd suffer. A capital gains tax on businesses, farms and second homes were among recommendations by the Tax Working Group, headed by Sir Michael Cullen.
The government's response to the group's report is expected some time this month.
Leader of the Opposition Simon Bridges joins Guyon Espiner in the studio to discuss tax, and politics after the Christchurch terror attacks.
"The Tax Working Group and indeed the prime minister would give the impression here that a capital gains tax really just applies to this other group, this very small group of the very wealthy and my point here is that's not true," he says.
"The other point that's very important is ... we know from an MYOB survey last week that 67 percent of these 570,000-odd businesses, they dislike this."