INTERNAL REVENUE SERVICE - IRS
Information about IRS office locations, making appointments, etc.
Phone numbers:
Individuals
800-829-1040
7 a.m. to 7 p.m. local time
Businesses
800-829-4933
7 a.m. to 7 p.m. local time
Non-profit taxes
877-829-5500
8 a.m. to 5 p.m. local time
Estate and gift taxes (Form 706/709)
866-699-4083
8 a.m. to 3:30 p.m. Eastern time
Excise taxes
866-699-4096
8 a.m. to 6 p.m. Eastern time
Callers who are hearing impaired
TTY/TDD 800-829-4059
Web pages