The ten Fortune 100 companies that lobbied on 50 or more bills since 2008 paid an average effective tax rate of 17.1 percent in 2010; the ten companies that lobbied on between 25 and 49 bills paid an average effective tax rate of 18.0 percent; the remaining publicly-traded companies paid an average effective tax rate of 26.0 percent. The companies that lobbied on the most tax bills also have seen their tax rates decline the most since 2007. Moreover, we estimate that for the average company, each additional tax bill a company lobbied on since 2008 is associated with a lower 2010 tax rate of between 0.13 and 0.36 percentage points…
From a post by Lee Drutman over at the Sunlight Foundation’s blog. See the post for more details from the analysis, along with caveats.