CFR
- Title 1 - General Provisions
- Title 2 - Grants and Agreements
- Title 3 - The President
- Title 4 - Accounts
- Title 5 - Administrative Personnel
- Title 6 - Domestic Security
- Title 7 - Agriculture
- Title 8 - Aliens and Nationality
- Title 9 - Animals and Animal Products
- Title 10 - Energy
- Title 11 - Federal Elections
- Title 12 - Banks and Banking
- Title 13 - Business Credit and Assistance
- Title 14 - Aeronautics and Space
- Title 15 - Commerce and Foreign Trade
- Title 16 - Commercial Practices
- Title 17 - Commodity and Securities Exchanges
- Title 18 - Conservation of Power and Water Resources
- Title 19 - Customs Duties
- Title 20 - Employees' Benefits
- Title 21 - Food and Drugs
- Title 22 - Foreign Relations
- Title 23 - Highways
- Title 24 - Housing and Urban Development
- Title 25 - Indians
- Title 26 - Internal Revenue
- Title 27 - Alcohol, Tobacco Products and Firearms
- Title 28 - Judicial Administration
- Title 29 - Labor
- Title 30 - Mineral Resources
- Title 31 - Money and Finance: Treasury
- Title 32 - National Defense
- Title 33 - Navigation and Navigable Waters
- Title 34 - Education
- Title 35 - Panama Canal
- Title 36 - Parks, Forests, and Public Property
- Title 37 - Patents, Trademarks, and Copyrights
- Title 38 - Pensions, Bonuses, and Veterans' Relief
- Title 39 - Postal Service
- Title 40 - Protection of Environment
- Title 41 - Public Contracts and Property Management
- Title 42 - Public Health
- Title 43 - Public Lands: Interior
- Title 44 - Emergency Management and Assistance
- Title 45 - Public Welfare
- Title 46 - Shipping
- Title 47 - Telecommunication
- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
SUBCHAPTER A—INCOME TAX (Parts 1–19)
- PART 1—INCOME TAXES
- PART 2—MARITIME CONSTRUCTION RESERVE FUND
- PART 3—CAPITAL CONSTRUCTION FUND
- PART 4—TEMPORARY INCOME TAX REGULATIONS UNDER SECTION 954 OF THE INTERNAL REVENUE CODE
- PART 5—TEMPORARY INCOME TAX REGULATIONS UNDER THE REVENUE ACT OF 1978
- PART 5c—TEMPORARY INCOME TAX REGULATIONS UNDER THE ECONOMIC RECOVERY TAX ACT OF 1981
- PART 5e—TEMPORARY INCOME TAX REGULATIONS, TRAVEL EXPENSES OF MEMBERS OF CONGRESS
- PART 5f—TEMPORARY INCOME TAX REGULATIONS UNDER THE TAX EQUITY AND FISCAL RESPONSIBILITY ACT OF 1982
- PART 6a—TEMPORARY REGULATIONS UNDER TITLE II OF THE OMNIBUS RECONCILIATION ACT OF 1980
- PART 7—TEMPORARY INCOME TAX REGULATIONS UNDER THE TAX REFORM ACT OF 1976
- PART 8—TEMPORARY INCOME TAX REGULATIONS UNDER SECTION 3 OF THE ACT OF OCTOBER 26, 1974 (PUB. L. 93-483)
- PART 9—TEMPORARY INCOME TAX REGULATIONS UNDER THE TAX REDUCTION ACT OF 1975
- PART 11—TEMPORARY INCOME TAX REGULATIONS UNDER THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974
- PART 12—TEMPORARY INCOME TAX REGULATIONS UNDER THE REVENUE ACT OF 1971
- PART 13—TEMPORARY INCOME TAX REGULATIONS UNDER THE TAX REFORM ACT OF 1969
- PART 15—TEMPORARY INCOME TAX REGULATIONS RELATING TO EXPLORATION EXPENDITURES IN THE CASE OF MINING
- PART 15a—TEMPORARY INCOME TAX REGULATIONS UNDER THE INSTALLMENT SALES REVISION ACT
- PART 16—TEMPORARY REGULATIONS UNDER THE REVENUE ACT OF 1962
- PART 16A—TEMPORARY INCOME TAX REGULATIONS RELATING TO THE PARTIAL EXCLUSION FOR CERTAIN CONSERVATION COST-SHARING PAYMENTS
- PART 17—TEMPORARY INCOME TAX REGULATIONS UNDER 26 U.S.C. 103(c)
- PART 18—TEMPORARY INCOME TAX REGULATIONS UNDER THE SUBCHAPTER S REVISION ACT OF 1982
- PART 19—TEMPORARY REGULATIONS UNDER THE REVENUE ACT OF 1964
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