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Business taxes: Income tax for S corporations

Small Business BasicsIf you elected to be an S corporation, you report income, deductions, gains and other required information on Form 1120S.

An S corporation has to file a return by the 15th day of the third month after the close of its tax year. If you don't think you will make the deadline, file Form 7004 to request a six-month extension. The extension excuses you temporarily from filing a return only -- you still have to pay the tax due.

An S corporation should make estimated tax payments as it receives income. Use Form 1120-W to figure each required installment of estimated tax. Payments are due on April 15, June 15, Sept. 15 and Dec. 15 if using a calendar year; and on the 15th day of the fourth, sixth, ninth and 12th months of the corporation's tax year.

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How to file
In addition to the traditional snail mail, here are a few filing options available for personal and business use:

  • IRS e-file or electronic filing either through an authorized e-file tax professional or through your own personal computer.
  • TeleFile with your home telephone.
  • 1040PC computerized return, prepared at home and sent in by mail.

 

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