This joint report by CEPR and the Political Economy Research Institute (University of Massachusetts, Amherst) gives an estimate of $177-354 billion in revenue that could be raised by taxing financial transactions in the United States.

The economic crisis of the last two years has led to serious concerns about the sharp growth in the federal government’s fiscal deficit as well as the government’s overall debt burden as a share of total U.S. GDP. Many analysts also believe that an excessive share of the economy’s...