What is the phone number for IRS customer service?

The Internal Revenue Service's assistance number for individual taxpayers is 800-829-1040, and for businesses it is 800-829-4933. Other customer service numbers are as follows: for exempt organizations, retirement plan administrators, and government entities, 877-829-5500, and for the hearing-impaired, 800-829-4933.

Callers can use the number when seeking assistance in preparing tax forms or when inquiring about a notice received in the mail. However, telephone wait times can be long and there are a limited number of problems the agents can handle. Assistance with many issues is available online at IRS.gov, such as setting up payment plans and getting transcripts of tax returns.