- 21 - assets, computer program, and files. The fact that petitioner is known on the basis of her name to her clients in the equestrian world does not somehow make her activities with her equestrian- related contacts separate from her design business, which also bears her name. We also are aware that for the years at issue, C.P.A. Borofsky reported the activities on two separate Schedules C. Positions taken by a taxpayer in a tax return are treated as admissions and cannot be overcome without cogent proof that they are erroneous. Mendes v. Commissioner, 121 T.C. 308, 312 (2003); Estate of Hall v. Commissioner, 92 T.C. 312, 337-338 (1989). Based on the plethora of evidence that the two undertakings constitute a single activity, we find that petitioner has overcome that position. We find that a close organizational and economic relationship exists between the equestrian and the design undertakings. Accordingly, we determine that for purposes of section 183, the equestrian undertaking and the design operation constitute a single activity. We need not consider whether petitioner engaged in the equestrian-based design business with the objective of making a profit because the combined activities were profitable in each of the years at issue.4 4Petitioner argues that the presumption under sec. 183(d) applies. Under sec. 183(d), in the case of an activity consisting in major part of the breeding, training, showing, or (continued...)Page: Previous 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 NextLast modified: November 10, 2007