Internal Revenue Service (IRS)
The Internal Revenue Service is available 24 hours a day, 7 days a week via the internet, available Monday through Friday via phone, and available at local offices for face-to-face consultations.
Address
1111 Constitution Ave. NW , Washington, DC 20224
Hours of Operation
Monday - Friday 8:30am - 4:30pm
Phone
1-800-829-1040
Emergency Phone
Website
https://www.irs.gov/