Cost of Complexity. According to the 2012 TAS, U.S. taxpayers directly spend $168 billion a year complying with income tax requirements, an amount that equals 15% of the total amount of income taxes collected. According to an April 2011 report issued by The Laffer Center, the cost of compliance may actually equal $431.1 billion per year, when man hours and secondary costs are considered.
The 2012 TSA report notes: