Chapter I, Subchapter D – MISCELLANEOUS EXCISE TAXES
- Part 40 – EXCISE TAX PROCEDURAL REGULATIONS
- Part 41 – EXCISE TAX ON USE OF CERTAIN HIGHWAY MOTOR VEHICLES
- Part 43 – EXCISE TAX ON TRANSPORTATION BY WATER
- Part 44 – TAXES ON WAGERING; EFFECTIVE JANUARY 1, 1955
- Part 46 – EXCISE TAX ON CERTAIN INSURANCE POLICIES, SELF-INSURED HEALTH PLANS, AND OBLIGATIONS NOT IN REGISTERED FORM
- Part 48 – MANUFACTURERS AND RETAILERS EXCISE TAXES
- Part 49 – FACILITIES AND SERVICES EXCISE TAXES
- Part 50 – REGULATIONS RELATING TO THE TAX IMPOSED WITH RESPECT TO CERTAIN HYDRAULIC MINING
- Part 51 – BRANDED PRESCRIPTION DRUG FEE
- Part 52 – ENVIRONMENTAL TAXES
- Part 53 – FOUNDATION AND SIMILAR EXCISE TAXES
- Part 54 – PENSION EXCISE TAXES
- Part 55 – EXCISE TAX ON REAL ESTATE INVESTMENT TRUSTS AND REGULATED INVESTMENT COMPANIES
- Part 56 – PUBLIC CHARITY EXCISE TAXES
- Part 141 – TEMPORARY EXCISE TAX REGULATIONS UNDER THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974
- Part 143 – TEMPORARY EXCISE TAX REGULATIONS UNDER THE TAX REFORM ACT OF 1969
- Part 145 – TEMPORARY EXCISE TAX REGULATIONS UNDER THE HIGHWAY REVENUE ACT OF 1982 (PUB. L. 97-424)
- Part 148 – CERTAIN EXCISE TAX MATTERS UNDER THE EXCISE TAX TECHNICAL CHANGES ACT OF 1958
- Part 156 – EXCISE TAX ON GREENMAIL
- Part 157 – EXCISE TAX ON STRUCTURED SETTLEMENT FACTORING TRANSACTIONS