REGULATIONS
Rulings
AD/CVD
Notices
HTSUS
U.S. Code
Regs
More
Ports
About
Updates
Apps
Larger font
Smaller font
SEARCH
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
Regulations last checked for updates: Aug 14, 2026
Title 26 - Internal Revenue last revised: Aug 10, 2026
All Titles
Title 26 - Internal Revenue
Chapter I [§ 1.0-1 - § 1.60] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY
Chapter I [§ 1.61-1 - § 1.139E-2] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.141-0 - § 1.169-4] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.170-3 - § 1.300] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.301-1 - § 1.400] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.401-0 - § 1.409(p)-1T] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.410(a)-1 - § 1.440] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.441-0 - § 1.500] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.501(a)-1 - § 1.640] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.641 - § 1.850] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.851-1 - § 1.907(f)-1] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.908 - § 1.1000] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.1001-1 - § 1.1400Z2(f)-1] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.1401-1 - § 1.1502-77B] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 1.1551-1 - § 1.9300-1] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 2.1 - § 28.7701-1] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 31.0-1 - § 36.3121(l)(10)-4] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 40.0-1 - § 49.5000B-1] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 50.1 - § 157.7701-1] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 300.0 - § 420.0-1] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 509.101 - § 521.117] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
Chapter I [§ 601.101 - § 801.8] - CHAPTER I—INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED)
.list_box li,p,.cm-search-info,.cm-search-detail,.abt span,.expand-collapse_top
Get the CustomsMobile app!