- S.J.D. (Doctor of Juridical Science) Taxation University of Wisconsin Madison 2004
- LLM Taxation University of Wisconsin Madison 2000
- JD Drake University, Des Moines, Iowa 1983
- MBA Accounting UW Madison 1981
- BBA Accounting UW Milwaukee 1978
- Hagen, W. W. (2017). Recent Attacks by the IRS and the Tax Court on Facade Easement Contributions. Journal of Taxation, 127(1).
- Hagen II, W. W. (2014). The Tax Court's Arbitrary Determination of the Value of Facade Easement Contributions. Brian O'Neil (Ed.). Journal of Taxation, 121(4), 174-181.
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