Tax Calendar: 2013 Federal Due Dates
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March 15
File a 2012 calendar year income tax return (Form 1120) and pay any tax due. If you want an automatic 6-month extension of time to file the return, file Form 7004, Application for Automatic Extension of Time To File Certain Business Income Tax, Information, and Other Returns, and deposit what you estimate you owe.
April 15
Deposit the first installment of estimated income tax for 2013. A worksheet, Form 1120-W, Estimated Tax for Corporations, is available to help you estimate your tax for the year.
June 17
Deposit the second installment of estimated income tax for 2013. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.
September 16
File a 2012 calendar year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6-month extension. Otherwise, see March 15.
Deposit the third installment of estimated income tax for 2013. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.
December 16
Deposit the fourth installment of estimated income tax for 2013. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.
If you operate on a fiscal year, see tax calendar information for Fiscal-Year Taxpayers.
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