Tax Calendar: Federal Due Dates

Corporations

March 17

File a 2007 calendar year income tax return (Form 1120 or 1120-A) 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 6-Month 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 2008. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

June 16

Deposit the second installment of estimated income tax for 2008. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

September 15

File a 2007 calendar year income tax return (Form 1120 or 1120-A) 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 17.

Deposit the third installment of estimated income tax for 2008. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

December 15

Deposit the forth installment of estimated income tax for 2008. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.