EO - Determination of Tax Liability
Internal Revenue Manual Part 4. Examining Process · 2026-10-03 edition · updated 2026-10-04 · United States
Examiners may rely on the following resources to help determine income taxes:
GCM 39813.
1990 CPE Text, Topic B, The Synanon Case.
CCH U.S. Master Tax Guide.
IRM Chapters 4.10, 4.11 and 4.12.
Income tax training textbooks.
Training Pub 11361–002, LMSB Corporate Taxation Participant Guide (Catalog 50286Q).
Consult with fellow examiners with strong income tax background.
Lexis-Nexis® and Westlaw®.
SB/SE or LB&I websites. See SB/SE’s Issues and Procedures website.
Form 990 to Form 1120 Conversion Table
Contributions, gifts, grants, and other receipts
Form 990 Description
Form 1120 Description
Direct public support
Non-taxable or Gross Receipts or Sales 1 & 2
Indirect public support
Non-taxable or Gross Receipts or Sales
Government contributions
Gross Receipts or Sales 3
Program service revenue including government fees and contracts
Gross Receipts or Sales
Membership dues and assessments
Gross Receipts or Sales 4
Interest on savings and temporary cash investments
Interest
Dividends and interest from securities
Dividends
Gross rents
Gross Rents 5
Less: rental expenses
Other Deductions 5
Other investment income
Other Income
Gross amount from sales of assets other than inventory
Capital Gain Income (net with Cost)
Less: cost or other basis and sales expenses
Capital Gain Income (net with Cost)
Net gain or (loss)
Capital Gain Income
Gross revenue from special events and activities
Gross Receipts or Sales
Cost of goods sold from special events and activities
Cost of Goods Sold
Gross sales of inventory, less returns and allowances
Gross Receipts or Sales
Less: cost of goods sold
Cost of Goods Sold
Other Revenue
Other Income
Expenses 6, 7 & 8
Form 990 Description
Form 1120 Description
Grants and allocations
Charitable Contributions, if qualified
Specific assistance to individuals
Other Deductions, if qualified
Benefits paid to or for members
Other Deductions, if qualified 4
Compensation of officers, directors, etc.
Compensation of Officers
Other salaries and wages
Salaries and Wages
Pension plan contributions
Pension, profit-sharing, etc., plans
Other employee benefits
Employee benefits programs
Payroll taxes
Taxes and Licenses
Professional fund-raising fees
Other Deductions, if qualified
Accounting fees
Other Deductions
Legal fees
Other Deductions
Supplies
Other Deductions
Telephone
Other Deductions
Postage and shipping
Other Deductions
Occupancy
Rents
Equipment rental and maintenance
Repairs and Maintenance
Printing and publications
Other Deductions
Travel
Other Deductions
Conferences, conventions, and meetings
Other Deductions
Interest
Interest
Depreciation, depletion, etc.
Depreciation or Depletion, if qualified
Other expenses
Other Deductions
1
IRC 61, Gross Income Defined. As a general rule, all income is taxable unless proven otherwise.
2
IRC 102, Gift and Inheritances. As a general rule, gross income does not include the value of property acquired by gift, bequest, devise, or inheritance. *See also: Synanon Church v. Commissioner, T.C. Memo. 1989-270 (Docket No. 20015-84). See Exhibit CPE 1990, Taxation of Revoked Tax-Exempt Organizations: The Synanon Case, and General Counsel Memorandum 39813. (Not citable as legal precedent)
**
Issues Examiner should consider:
Was there a good faith solicitation?
Was there a good faith contribution?
3
Government Grants are not excludable income under IRC 102.
4
IRC 277, Deductions by Certain Membership Organizations [non 501(c)(3)]. As a general rule, deductions shall be allowed only to the extent of income derived during such year from members or transactions with members.
501(c)(3) - generally deductible
**
Examiners need to distinguish between contributions and gross receipts. Scenarios would be:
All classified as contributions with member benefits all deductible.
Quid-pro-quo - only partially contributions and only partially deductible.
Member services for member benefits - where no part is attributable to charitable purpose, would not be deductible.
5
IRC 470, Property Leased to an Exempt Organization. If a corporation leases property to a governmental or other tax-exempt entity, the corporation cannot claim deductions related to the property to the extent that they exceed the corporation's income form the lease payments.
6
IRC 162, Trade of Business Expenses. Examiners should be aware of the "Income Offset Rules" for deductibility of expenses.
7
IRC 263 and IRC 263A, Capital Expenditures. Generally requires corporations to capitalize, or include in inventory certain costs incurred in connection with real property and inventory. Please be aware that this section applies to Form 990 as well
8
IRC 183, Activities not engaged in for profit. As a General Rule, in the case of an activity engaged in by an individual or an S Corporation, if such activity is not engaged in for profit, no deduction attributable to such activity shall be allowed under this chapter [26 USCS §§ 1 et. seq.] except as provided in this section.
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