SECTION 3. BACKGROUND
Internal Revenue Bulletin 2010-7 · 2026-10-03 edition · updated 2026-10-04 · United States
.01 If section 6662 applies to any portion of an underpayment of tax required to be shown on a return, an amount equal to 20 percent of the portion of the underpayment to which the section applies is added to the tax (the penalty rate is 40 percent in the case of gross valuation misstatements under section 6662(h)). Section 6662(b)(2) applies to the portion of an underpayment of tax that is attributable to a substantial understatement of income tax.
.02 Section 6662(d)(1) provides that there is a substantial understatement of income tax if the amount of the understatement exceeds the greater of 10 percent of the amount of tax required to be shown on the return for the taxable year or $5,000. Section 6662(d)(1)(B) provides special rules for corporations. A corporation (other than an S corporation or personal holding company) has a substantial understatement of income tax if the amount of the understatement exceeds the lesser of 10 percent of the tax required to be shown on the return for a taxable year (or, if greater, $10,000) or $10,000,000. Section 6662(d)(2) defines an understatement as the excess of the amount of tax required to be shown on the return for the taxable year over the amount of the tax that is shown on the return reduced by any rebate (within the meaning of section 6211(b)(2)).
.03 In the case of an item not attributable to a tax shelter, section 6662(d)(2)(B)(ii) provides that the amount of the understatement is reduced by the portion of the understatement attributable to any item with respect to which the relevant facts affecting the item’s tax treatment are adequately disclosed in the return or in a statement attached to the return, and there is a reasonable basis for the tax treatment of the item by the taxpayer.
.04 Section 6694(a) imposes a penalty on a tax return preparer who prepares a return or claim for refund reflecting an understatement of liability due to an “unreasonable position” if the tax return preparer knew (or reasonably should have known) of the position. A position (other than a position with respect to a tax shelter or a reportable transaction to which section 6662A applies) is generally treated as unreasonable unless (i) there is or was substantial authority for the position, or (ii)
the position was properly disclosed in accordance with section 6662(d)(2)(B)(ii)(I) and had a reasonable basis. If the position is with respect to a tax shelter (as defined in section 6662(d)(2)(C)(ii)) or a reportable transaction to which section 6662A applies, the position is treated as unreasonable unless it is reasonable to believe that the position would more likely than not be sustained on the merits. See Notice 2009–5, 2009–3 I.R.B. 309 (January 21, 2009) for interim penalty compliance rules for tax shelter transactions.
.05 In general, this revenue procedure provides guidance for determining when disclosure is adequate for purposes of section 6662(d)(2)(B)(ii) and section 6694(a)(2)(B). For purposes of this revenue procedure, the taxpayer must furnish all required information in accordance with the applicable forms and instructions, and the money amounts entered on these forms must be verifiable.
.06 Fiscal and short tax year returns. (a) In general. This revenue procedure may apply to a return for a fiscal tax year that begins in 2009 and ends in 2010. This revenue procedure may also apply to a short year return for a period beginning in 2010 if the return is to be filed before the 2010 forms are available. (Note that individuals are generally not put in this position as a decedent’s final return for a fractional part of a year is due the fifteenth day of the fourth month following the close of the 12-month period which began with the first day of such fractional part of the year. See Treas. Reg. § 1.6072–1(b).) In the case of fiscal year and short year returns, the taxpayer must take into account any tax law changes that are effective for tax years beginning after December 31, 2009, even though these changes are not reflected on the form.
(b) Tax law changes effective after December 31, 2009. This document does not take into account the effect of tax law changes effective for tax years beginning after December 31, 2009. If a line referenced in this revenue procedure is affected by such a change and requires additional reporting, a taxpayer may have to file Form 8275, Disclosure Statement, or Form 8275–R, Regulation Disclosure Statement until the Service prescribes criteria for complying with the requirement.
February 16, 2010 405 2010–7 I.R.B.
(3) Differences in book and income tax reporting.
For Schedule M–1 and all Schedules M–3, including those listed in (a)-(f) below, the information provided must reasonably apprise the Service of the potential controversy concerning the tax treatment of the item. If the information provided does not so apprise the Service, a Form 8275 or Form 8275–R must be used to adequately disclose the item (see Part II of the instructions for those forms).
Note: An item reported on a line with a pre-printed description, shown on an attached schedule or “itemized” on Schedule M–1, may represent the aggregate amount of several transactions producing that item ( i.e., a group of similar items, such as amounts paid or incurred for supplies by a taxpayer engaged in business). In some instances, a potentially controversial item may involve a portion of the aggregate amount disclosed on the schedule. The Service will not be reasonably apprised of a potential controversy by the aggregate amount disclosed. In these instances, the taxpayer must use Form 8275 or Form 8275–R regarding that portion of the item. Combining unlike items, whether on Schedule M–1 or Schedule M–3 (or on an attachment when directed by the instructions), will not constitute an adequate disclosure.
Additionally, for taxpayers that file the Schedule M–3 (Form 1120), the new Schedule B, Additional Information for Schedule M–3 Filers, must also be completed. For taxpayers that file the Schedule M–3 (Form 1065), the new Schedule C, Additional Information for Schedule M–3 Filers, must also be completed. When required, these new Schedules are necessary to constitute adequate disclosure.
(a) Form 1065. Schedule M–3 (Form 1065), Net Income (Loss) Reconciliation for Certain Partnerships : Column (a), Income (Loss) per Income Statement, of Part II (reconciliation of income (loss) items) and Column (a), Expense per In- come Statement, of Part III (reconciliation of expense/deduction items); Column (b), Temporary Difference, and Column (c), Permanent Difference, of Part II (reconciliation of income (loss) items) and Part III (reconciliation of expense/deduction items); and Column (d), Income (Loss)
(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); or (3) Is not properly substantiated or the taxpayer failed to keep adequate books and records with respect to the item or position.
(6) Disclosure also will have no effect for purposes of the section 6694(a) penalty as applicable to tax return preparers if the position is with respect to a tax shelter (as defined in section 6662(d)(2)(C)(ii)) or a reportable transaction to which section 6662A applies. .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 15, supplying all required information. This section 4.02(1)(c) does not apply to (i) amounts disallowed under section 163(d) unless Form 4952, Invest- ment Interest Expense Deduction, is completed, or (ii) amounts disallowed under section 265.
(d) Contributions: Complete lines 16 through 19, supplying all required information. Enter the amount of the contribution reduced by the value of any substantial benefit (goods or services) provided by the donee organization in consideration, in whole or in part. Entering the value of the contribution unreduced by the value of the benefit received will not constitute adequate disclosure. If a contribution of $250 or more is made, this section will not apply unless a contemporaneous written acknowledgment, as required by section 170(f)(8), is obtained from the donee organization. If a contribution of cash of less than $250 is made, this section will not apply unless a bank record or written communication from the donee, as required by section 170(f)(17), is obtained from the donee organization. If a contri
bution of property other than cash is made and the amount claimed as a deduction exceeds $500, attach a properly completed Form 8283, Noncash Charitable Contri- butions, to the return. In addition to the Form 8283, if a contribution of a qualified motor vehicle, boat, or airplane has a value of more than $500, this section will not apply unless a contemporaneous written acknowledgment, as required by section 170(f)(12), is obtained from the donee organization and attached to the return. An acknowledgment under section 170(f)(8) is not required if an acknowledgment under section 170(f)(12) is required.
(e) Casualty and Theft Losses: Complete Form 4684, Casualties and Thefts, and attach to the return. Each item or article for which a casualty or theft loss is claimed must be listed on Form 4684.
(2) Certain Trade or Business Expenses (including, for purposes of this section, the following six expenses as they relate to the rental of property):
(a) Casualty and Theft Losses: The procedure outlined in section 4.02(1)(e) must be followed.
(b) Legal Expenses: The amount claimed must be stated. This section does not apply, however, to amounts properly characterized as capital expenditures, personal expenses, or non-deductible lobbying or political expenditures, including amounts that are required to be (or that are) amortized over a period of years.
(c) Specific Bad Debt Charge-off: The amount written off must be stated.
(d) Reasonableness of Officers’ Compensation: Form 1120, Schedule E, Com- pensation of Officers, must be completed when required by its instructions. The time devoted to business must be expressed as a percentage as opposed to “part” or “as needed.” This section does not apply to “golden parachute” payments, as defined under section 280G. This section will not apply to the extent that remuneration paid or incurred exceeds the $1 million-employee-remuneration limitation, if applicable.
(e) Repair Expenses: The amount claimed must be stated. This section does not apply, however, to any repair expenses properly characterized as capital expenditures or personal expenses.
(f) Taxes (other than foreign taxes): The amount claimed must be stated.
2010–7 I.R.B. 406 February 16, 2010
per Tax Return, of Part II (reconciliation of income (loss) items) and Column (d), Deduction per Tax Return, of Part III (reconciliation of expense/deduction items).
(b) Form 1120. (i) Schedule M–1, Rec- onciliation of Income (Loss) per Books With Income per Return.
(ii) Schedule M–3 (Form 1120), Net Income (Loss) Reconciliation for Corpo- rations with Total Assets of $10 Million or More : Column (a), Income (Loss) per Income Statement, of Part II (reconciliation of income (loss) items) and Column (a), Expense per Income Statement, of Part III (reconciliation of expense/deduction items); Column (b), Temporary Difference, and Column (c), Permanent Difference, of Part II (reconciliation of income (loss) items) and Part III (reconciliation of expense/deduction items) and Column (d), Income (Loss) per Tax Re- turn, of Part II (reconciliation of income (loss) items); and Column (d), Deduction per Tax Return, of Part III (reconciliation of expense/deduction items).
(c) Form 1120–L. Schedule M–3 (Form 1120–L), Net Income (Loss) Reconcilia- tion for U.S. Life Insurance Companies With Total Assets of $10 Million or More : Column (a), Income (Loss) per Income Statement, of Part II (reconciliation of income (loss) items) and Column (a), Expense per Income Statement, of Part III (reconciliation of expense/deduction items); Column (b), Temporary Differ- ence, and Column (c), Permanent Differ- ence, of Part II (reconciliation of income (loss) items) and Part III (reconciliation of expense/deduction items); and Column (d), Income (Loss) per Tax Return, of Part II (reconciliation of income (loss) items) and Column (d), Deduction per Tax Return, of Part III (reconciliation of expense/deduction items).
(d) Form 1120–PC. Schedule M–3 (Form 1120–PC), Net Income (Loss) Rec- onciliation for U.S. Property and Casualty Insurance Companies With Total Assets of $10 Million or More : Column (a), In- come (Loss) per Income Statement, of
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