Tax Year 2016 Business Income Tax Deadlines

With the commencement of the new year, it is very important for business owners and corporate executives to focus on the main 2016 business income tax deadlines. In this short review of 2016 business income tax deadlines, I will focus only on the most common income tax deadlines of a corporation that operates on a calendar-year basis (i.e. the corporate fiscal year is the same as the calendar year).

It is important to keep in mind that other 2016 business income tax deadlines (such as employment tax deadlines) may apply to your particular situation. Furthermore, one must remember that the exact deadlines will change if the corporation does not operate on the calendar-year basis, but on its own fiscal year.

Keeping in mind these two important exceptions, here are the most common 2016 business income tax deadlines:

March 15, 2016: Forms 1120 and 1120S for tax year 2015 are due. Schedules K-1 (for S-corporations) are due at that time as well. If, however, the corporation does not wish to file its tax return at that time, it can file Form 7004 by March 15, 2016 to obtain an automatic six-month extension to file 2015 Forms 1120 or 1120S. (However, the estimated 2015 tax liability must still be paid by March 15, 2016). Moreover, electing large partnerships must also furnish Schedule K-1 (Form 1065-B) at that time.

April 18, 2016: There are three major 2016 business income tax deadlines associated with April 18, 2016. (Normally, the deadline would be on April 15, but April 15 2016 falls on a Saturday and April 17 is a federal holiday; therefore, in 2016, the due date shifts to April 18). First, partnerships must file their 2015 Forms 1065 and supply Schedules K-1 to each partner. If a partnership wishes to file its Form 1065 later, it must file Form 7004 by April 18, 2016, in order to obtain an automatic five-month filing extension.

Second, Electing Large Partnerships must file their 2015 Forms 1065-B. Similarly, Form 7004 must be filed by April 18, 2016, if the Electing Large Partnership wishes to obtain an automatic five-month filing extension.

Third, corporations must make their first corporate estimated tax payments by April 18, 2016.

June 15, 2016: Second corporate estimated tax payments are due.

September 15, 2016: There are three major 2016 business income tax deadlines associated with September 15, 2016. First, all partnerships that filed Form 7004 must file their 2015 Forms 1065 by September 15, 2016.

Second, all corporations that obtained six-month extension by filing Form 7004 must file their 2015 Forms 1120 and 1120S by September 15, 2016.

Third, corporations must make their third corporate estimated tax payments by September 15, 2016.

October 17, 2016: Electing Large Corporations must file their extended 2015 Forms 1065-B.

December 15, 2016: Fourth corporate estimated tax payments are due.

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