On September 29, 2017, Judge Mark Holmes of the United States Tax Court (Tax Court) issued an order in the estate tax valuation case brought by the Estate of Michael Jackson (the Estate). In the case, the Estate moved to strike the testimony of the Internal Revenue Service’s (IRS) valuation expert witness on the grounds that he lied. The IRS acknowledged that its expert “did not tell the truth when he testified that he did not work on or write a valuation report for the IRS Examination Division in the third-party taxpayer audit.” Apparently, the expert had worked on the valuation of Whitney Houston’s Estate on behalf of the IRS, and failed to list the engagement in his report. He also omitted one publication that he wrote and one case in which he provided expert-witness testimony at a deposition.

The question for the Court was the proper remedy for the omissions, with sanctions ranging from striking all of the expert’s testimony (and thereby depriving the IRS of the only evidence in its favor on the key issues in the case) to discounting the expert’s testimony and weight to be given to his opinions. The Court decided to take the latter route.

The Court explained that striking expert testimony pursuant to Tax Court Practice and Procedure Rule 143(g) (governing expert witness reports) occurs when a putative expert omits information from the report without good cause for the omission. In this case, the Court explained that the IRS’s expert failed to disclose his valuation work on his long list of expert-testimony engagements attached to his resume, but ruled that the omission was merely a “clerical error.” However, the expert did provide false testimony at trial when he testified he did not work on or write a valuation report in the matter involving Whitney Houston’s Estate. The Court determined that there had to be some negative consequences for the expert’s false testimony, and settled on discounting his credibility and opinions.

Practice Point: The order in Estate of Michael Jackson, as well as the Tax Court’s prior opinion in Tucker v. Commissioner, TC Memo. 2017-183, highlight a very important aspect of preparing an expert report for submission in Tax Court: it must be complete and accurate at the time of its submission. It is good practice to run a litigation database search (e.g., Lexis or Westlaw) on your expert’s testimony experience as a check on what the expert has listed in his report.