Listed below are some factors used by the IRS in order to determine whether an operation is a hobby or a business. I lifted these from
http://www.irs.gov/individuals/display/0,,i1=1&genericId=6977,00.html#IRC183.
IRC section 183(d) provides for a presumption that the activity is carried on for a profit if it produces a profit in at lease 3 out of the last 5 consecutive tax years (2 out of the last 7 years if the activity is breeding, training, showing or racing horses.) If the taxpayer is just starting out in the activity, he or she may elect under IRC section 183(e) to postpone the determination of whether the presumption applies to the activity until the close of the 4th (or 6th) year after his or her first year engaged in the activity. In that case, the taxpayer files a Form 5213 which automatically extends the statute of limitation for all relevant years until the close of the presumption period.
In determining whether a farming activity is carried on for profit, all the facts in regard to the activity are taken into account. No one factor alone is decisive. Publication 225 provides guidance to taxpayers who are analyzing their situation. Among the factors listed:
Is the farm operated in a businesslike manner?
Does the time and effort spent on farming indicate an intent to make it profitable?
Is there a dependence on income from farming for livelihood?
Are losses due to circumstances beyond control? Are the losses normal in the start-up phase of farming?
Are methods of operation changed in an attempt to improve profitability?
Are profits from farming made in any year and in what amounts?
Does the taxpayer, or advisors, have the knowledge needed to carry on the farming activity as a successful business?
Has the taxpayer made a profit in similar activities in the past?
Is the farming activity carried on for personal pleasure or recreation?
Look at the following court cases where the disallowance of expenses for not-for-profit activities was upheld:
Hendricks, Daniel E, et ux. v. Commissioner, 32 F.3d 94 (4th Cir 1994), 74 AFTR2d Par. 94-5281
surgeon with cattle operation
Westbrook, Billie R, et ux. v. Commissioner, 68 F.3d 868 (5th Cir 1995), 76 AFTR2d Par. 95-5623
veterinarian with embryo transplant, cattle and miniature horse operation
DeMendoza, Mario G, III v. Commissioner, T.C. Memo. 1994-314
lawyer with polo ponies
Borsody, Frank J, et ux. v. Commissioner, T.C. Memo. 1993-534 aff'd per curiam, US-CT-APP-4 [96-2 USTC _50,415], 78 AFTR2d Par. 96-5260
horse breeding/training
Lujan, Arthur G, et ux. v. Commissioner, T.C. Memo. 1992-417
retired with small cattle operation.
PS: Sabi, my farm is north of Charlotte.