CHAPTER I - INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
- SUBCHAPTER A - INCOME TAX (CONTINUED) (§§ 1.61-1 — 18.1379-2)
- SUBCHAPTER B - ESTATE AND GIFT TAXES (§§ 20.0-1 — 26.7701-2)
- SUBCHAPTER C - EMPLOYMENT TAXES AND COLLECTION OF INCOME TAX AT SOURCE (§§ 31.0-1 — 36.3121)
- SUBCHAPTER D - MISCELLANEOUS EXCISE TAXES (§§ 40.0-1 — 49.5000B-1)
- SUBCHAPTER D - MISCELLANEOUS EXCISE TAXES (CONTINUED) (§§ 50.1 — 157.7701-1)
- SUBCHAPTER E [RESERVED]
- PARTS 170-299 [RESERVED]
- SUBCHAPTER F - PROCEDURE AND ADMINISTRATION (§§ 300.0 — 420.0-1)
- SUBCHAPTER G - REGULATIONS UNDER TAX CONVENTIONS (§§ 509.101 — 521.117)
- SUBCHAPTER H - INTERNAL REVENUE PRACTICE (§§ 601.101 — 801.8)