All TACs provide service by appointment. The Contact Your Local Office tool on IRS helps taxpayers find the closest IRS TAC, the days and hours of operation, and a list of services the TAC provides. Once they make an appointment, taxpayers will receive an automated email to the address they provide.
267-941-1000 for international callers or overseas taxpayers. (Overseas taxpayers may also fax a tax question to 681-247-3101 or use our international contact address page.)
Contact an IRS customer service representative to correct any agency errors by calling 800-829-1040 (see telephone assistance for hours of operation).
You can get in-person help at your local IRS Taxpayer Assistance Center (TAC). Locate a Taxpayer Assistance Center near you. Check what services are available at that location, then call 844-545-5640 to schedule an appointment. IRS offices are closed on federal holidays.
A good rule of thumb: Call as early in the morning as possible. Phones are open from 7 a.m. to 7 p.m. (your local time) Monday to Friday, except: Residents of Hawaii and Alaska should follow Pacific time.
What happens if I can't verify online or by phone? We'll ask you to schedule an appointment and bring the documents listed above to your local IRS office to verify in person.