Guidance on How to Calculate the Built-in Capital Gains Tax?! Estate of Richmond is well known among experienced valuation professionals for at least two reasons. First, the U.S. Tax Court was critical of the experts’ lack of credentials and the fact that the estate submitted an unsigned, marked-up report with the 706. Second, the U.S. Tax Court did not allow a 100 percent BICG tax reduction. Rather, the Court provided guidance regarding the extent of the BICG deduction. The author, an experienced valuation advisor, shares his views on both of these issues.