Skip to content

Rev. Proc. 2005-74

SEC. 4. PROCEDURE

Internal Revenue Bulletin 2005-50 · 2026-10-03 edition · updated 2026-10-04 · United States

.01 General. (1) Additional disclosure of facts relevant to, or positions taken with respect to, issues involving any of the items set forth below is unnecessary for purposes of reducing any understatement of income tax under section 6662(d) (except as otherwise provided in section 4.02(3) concerning Schedules M–1 and M–3), provided that the forms and attachments are completed in a clear manner and in accordance with their instructions.

(2) The money amounts entered on the forms must be verifiable, and the information on the return must be disclosed in the manner described below. For purposes of this revenue procedure, a number is verifiable if, on audit, the taxpayer can demonstrate the origin of the number (even if that number is not ultimately accepted by the Internal Revenue Service) and the taxpayer can show good faith in entering that number on the applicable form.

(3) The disclosure of an amount as provided in section 4.02 below is not ad

equate when the understatement arises from a transaction between related parties. If an entry may present a legal issue or controversy because of a related party transaction, then that transaction and the relationship must be disclosed on a Form 8275, Disclosure Statement, or Form 8275-R, Regulation Disclosure Statement . (4) Where the amount of an item is shown on a line that does not have a preprinted description identifying that item (such as on an unnamed line under an “Other Expense” category) the taxpayer must clearly identify the item by including the description on that line. For example, to disclose a bad debt for a sole proprietorship, the words “bad debt” must be written or typed on the line of Schedule C that shows the amount of the bad debt. Also, for Schedule M–3, Part II, line 26, Other income (loss) items with differences, or Part III, line 35, Other expense/deduction items with differences, the entry must provide descriptive language; for example, “Cost of non-compete agreement deductible not capitalizable.” If space limitations on a form do not allow for an adequate description, the description must be continued on an attachment.

(5) Although a taxpayer may literally meet the disclosure requirements of this revenue procedure, the disclosure will have no effect for purposes of the section 6662 accuracy-related penalty if the item or position on the return: (1) Does not have a reasonable basis as defined in Treas. Reg. § 1.6662–3(b)(3); (2) Is attributable to a tax shelter item as defined in section 6662(d)(2) and Treas. Reg. § 1.6662–4(g); or (3) Is not properly substantiated or the taxpayer failed to keep adequate books and records with respect to the item or position. See Treas. Reg. § 1.6694–2(c) regarding limitations on the effectiveness of a disclosure regarding the section 6694 return preparer penalty.

.02 Items. (1) Form 1040, Schedule A, Itemized Deductions :

(a) Medical and Dental Expenses: Complete lines 1 through 4, supplying all required information.

(b) Taxes: Complete lines 5 through 9, supplying all required information. Line 8 must list each type of tax and the amount paid.

(c) Interest Expenses: Complete lines 10 through 14, supplying all required in

2005–50 I.R.B. 1138 December 12, 2005

Provisions & Judicial Practice Division). For further information regarding this revenue procedure, contact Branch 2 of the Administrative Provisions & Judicial Practice Division at (202) 622–4940 (not a toll-free call).

26 CFR 601.201: Rulings and determination letters. (Also, Part I, § 7805; § 301.7805–1.)

Rev. Proc. 2005–76

Get a plain-English answer with a citation back to this text.

Ask AI about this code
▸Contents — Internal Revenue Bulletin 2005-50

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.