Associated Press: Iowa House Republicans on Monday proposed eliminating retirement income taxes. State revenue experts estimated eliminating retiree benefits from income tax would cost the state about $2 billion in the first six years. The proposal is part of efforts to encourage retirees to remain in Iowa rather than move to other states, said Rep. Gary Mohr, chairman of the House Appropriations Committee. Mohr said data from the Iowa Public Employees Retirement System shows Florida and Texas — both states without an income tax — are top destinations for Iowa retirees in the system. State revenue experts estimated eliminating retiree benefits from income tax would cost the state about $2 billion in the first six years.