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. Consumers can also check the status of a refund through the IRS website. The organization also assists customers at numerous local offices across the country, explains the IRS.
The IRS also provides TDD service for hearing-impaired individuals at 800-829-4059 from 7 a.m. to 7 p.m. local time Monday through Friday, according to the IRS.