Some of the ways to contact the Internal Revenue Service, or IRS, about taxes include the Internet and telephone, according to About.com. Others include fax and mail.
To contact the IRS through the Internet, an individual goes to the IRS website, which features IRS information and forms, notes About.com. The information found on the website includes frequently asked questions and tax law changes. In the absence of the Internet, telephone contact is an option. The telephone numbers through which to conduct the IRS include 1-800-829-3676 and 1-800-829-1040. While the former is handy when in need of tax forms, publications and instructions, the latter is applicable when asking tax questions.