ABOUT THIS FORM
  1120, U.S. Corporation Income Tax Return

FEDERAL

WHEN AND WHERE

File this form before the 15th day of the 3rd month after the end of the corporation's tax year.

Internal Revenue Service
Cincinnati, OH  45999-0012 

MORE INFORMATION

Internal Revenue Service (IRS)

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(800) 829-1040   information 

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A corporation files either Form 1120, U.S. Corporation Income Tax Return, or the short Form 1120-A, U.S. Corporation Short-Form Income Tax Return, and pays tax on its income.  A corporation's owners may be shareholders only, or employees also.  If the corporation paid dividends during the year, it gives each shareholder a Form 1099-DIV, Dividends and Distributions.  It gives each employee a Form W-2, Wage and Tax Statement.  The shareholders and employees use these forms to complete their individual returns.  Publication 334 and Publication 542 show a filled-In Form 1120-A.  In order to estimate and/or calculate income tax for a corporation, you should see IRS Publication 542, Tax Information on Corporations.  Each corporation must file a tax return even if it had no taxable income for the year and regardless of its gross income for the tax year.

Every corporation must make estimated tax payments.  Use Form 1120-W to figure the corporation's estimated tax and determine the required installment to pay by the due date of each payment period.  Use Form 8109 to make each of these deposits.  If a corporation figures its taxable income on a calendar year basis, file its Income tax return by March 15 following the close of the tax year.  If a corporation uses a fiscal year, file its return by the 15th day of the third month following the close of its fiscal year.  A corporation files its income tax return with the Internal Revenue Service Center serving the area for the location of the principal office for keeping its books and records.  The instructions to the forms have the service center locations.