The Internal Revenue Service lists several phone numbers so that those seeking help in a variety of tax-related categories can obtain information specific to their needs. The IRS also lists a phone number for assistance via TDD for the hearing impaired, according to the IRS website.
The IRS website separates its phone numbers by tax category, including a tax help line for individuals and businesses. Additional phone numbers listed on the site include some for tax practitioners, such as professionals who assist filers with e-file tax return submissions.
Most of the phone numbers for the IRS reach agents during set hours, while the automated Refund Hotline and Electronic Federal Tax Payment System are available around the clock, as indicated by the IRS website.