The Statistics of Income Division has released Special Studies in Federal Tax Statistics:

Selected papers given in 2005 at the annual meetings of the American Statistical Association and the National Tax Association have been included in a recent edition of Special Studies in Federal Tax Statistics . . . .  The papers are organized into seven areas of interest:

1. New research from the IRS
2. Corporate book-tax differences
3. Effects of taxation on corporate financial policy
4. Issues in quantifying measurement error
5. Methodological topics related to IRS tax statistics
6. Estate and personal wealth sample design
7. IRS area-to-area migration data