- 27 - the taxpayer’s experience, knowledge, and education. Sec. 1.6664-4(b)(1), Income Tax Regs. Generally, the most important factor is the extent of the taxpayer’s effort to assess his or her proper tax liability. Stubblefield v. Commissioner, T.C. Memo. 1996-537; sec. 1.6664-4(b)(1), Income Tax Regs. Petitioners are no strangers to the section 6662(a) accuracy-related penalty. This Court sustained respondent’s determination that petitioners were liable for the section 6662(a) penalty for taxable year 2002 because of “their failure to maintain and produce the required documentation to support their deductions”. Jackson v. Commissioner, T.C. Memo. 2005-159. On Schedule C of their 2000 joint Form 1040, petitioners fully deducted startup costs incurred in 1998 and 1999 for Hansie Productions instead of amortizing the expenditures over a period of at least 60 months. The instructions to Schedule C clearly state that startup expenditures must be amortized. See 2000 Instructions for Schedule C, Profit or Loss From Business, General Instructions, Other Schedules and Forms You May Have to File, and Part V Specific Instructions, Other Expenses; 2000 Instructions for Form 4562, Part VI--Amortization, Line 40. Additionally, petitioners fully deducted the cost of office furniture and equipment they purchased in 2000, some of which they admitted was for personal use, without making the appropriate election under section 179. The instructions toPage: Previous 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 NextLast modified: March 27, 2008