Finance Minister Bill English said Mr Little's proposal was a bad idea.
"We've tried politicians setting interest rates before back in the 1970s and 80s and it doesn't work."
He said it was a "bit of a surprise" from the Labour Party, which had been fairly "mainstream" in its economic policy but was now opposing a major free trade agreement in the Trans-Pacific Partner and proposing setting interest rates.
He did not believe regulation was required to force the banks' hands, saying the market was competitive and some banks were passing the interest cuts on while others would come under pressure to do so.
NZH