The chair of a taxpayer funded government inquiry has been referred by Labor to the Australian Federal Police after being accused of sharing the details of voters with a high-profile fund manager as part of a co-ordinated campaign against Labor's franking credit policy.

Multiple voters who registered to attend the parliamentary inquiry are outraged that they are now receiving advertising material from Wilson Asset Management, a company that has $3 billion in funds under management, some of which could be put at risk if Labor wins the next election.

Mr Wilson and his distant relative Geoff Wilson, who owns Wilson Asset Management, have co-ordinated protests, petitions and voter information to maximise the political hit on Labor's policy that would see up to 900,000 retired non-taxpaying shareholders lose a tax refund worth thousands of dollars each year. Mr Wilson has also declared his investment in two seperate funds run by Wilson Asset Management.

Tim Wilson chairing the franking credit public hearing in Chatswood. Credit:James Brickwood

Momentum is gathering within Parliament to refer Mr Wilson to the privileges committee when it returns next week. Labor and the Greens have called for Mr Wilson to resign while independent Kerryn Phelps has also indicated her concerns.