Complexity of U.S. Tax Code Causes $67 to $378 Billion in Annual Accounting Costs

To put numbers in perspective, the entire state budget of Montana is less than $5 billion annually. Many other states operate on annual budgets of less than $5 or $10 annually.

A study by the Mercatus Center has recently found that Americans spend $67  billion to
$378 billion in annual accounting costs in the process of filing their tax returns.

See here.