We've been through this before....many times before. Since 1950 tax revenues have increased every year except 1992, 2002-2003 and 2009-2010. 1992 was a Clinton year, 2002-2003 was due to the crash after 9/11 and 2008-2010 was due to the crash of 2007. The most dramatic increase in tax revenues began in 2003....just after the implementation of the Bush tax cuts. Here's the chart