About
Federal
Internal Revenue Service
An eligible domestic corporation can avoid double taxation from the Federal Government by electing to be treated as an "S corporation."
Generally, an S corporation is exempt from federal income tax, other than tax on certain capital gains and passive income. Shareholders must include their share of the corporation's income on their tax returns.
S corporations must file an Election of Small Business Corporation form to register with the IRS. S corporations and their shareholders must include special forms when filing their income and employment taxes.
Additional resources
Internal Revenue Service (IRS)
Address
Business Questions Hotline
Business Questions Hotline
Website
http://www.irs.gov/
Phone
(800) 829-4933
7 a.m. to 7 p.m. local time