Historical Tax Rates by Income Group: Part 2

In an earlier post, I had a graph showing the Historical Tax Rates by Income Group using data from Pitketty & Saez. Here is another graph (found on Greg Mankiw's Blog) which shows historical tax rates by income group but this time the data is from the Congressional Budget Office. CBO total effective tax rate

Addendum 3/3/08 The large difference between the two graphs is due to the treatment of payroll taxes paid by employers and the corporate income tax. The Pitketty & Saez data assumes these taxes are actually paid by employees and stockholders but the CBO data in the above graph does not include them.