On August 11, 2021, the Tax Court issued a Memorandum Opinion in the case of Wathen v. Commissioner (T.C. Memo. 2021-100). The primary issues presented in Wathen v. Commissioner were whether the petitioner failed to report income, whether the petitioner is entitled to deductions on Schedule C, whether the petitioner is liable for the failure to file penalty for 2010 and 2011, and whether the petitioner is liable for the substantial understatement accuracy-related penalty. Background to