Corporate Tax
March 15 / Corporate Tax / Deadliness
Partnerships: File a 2016 tax return (Form 1065). Provide each partner with a copy of
Schedule K-1 (Partner’s Share of Income, Deductions, Credits, etc.) of
Form 1065, or a substitute Schedule K-1. To request an automatic 6-month
extension of time to file the return and provide Schedules K-1, use
Form 7004 to extend your filing deadline to September 15. You can file
Form 7004 online.
Electing Large Partnerships: File a 2016 tax return (Form
1065-B). Provide each partner with a copy of Schedule K-1 (Partner’s
Share of Income/Loss from an Electing Large Partnership) of Form 1065-B,
or a substitute of Schedule K-1. This due date applies even if the
partnership requests an extension of time to file Form 1065-B by filing
Form 7004. To request an automatic 6-month extension of time to file the
return and provide each partner with a copy of their amended (if
required) Schedule K-1, use Form 7004 to move your filing deadline to
September 15.
Corporations: File a 2016 income tax return (Form 1120S) and pay any tax
due. Provide each shareholder with a copy of Schedule K-1
(Shareholder’s Share of Income, Deductions, Credits, etc.) of Form
1120S, or a substitute of Schedule K-1. To get an automatic 6-month
extension of time to file, use Form 7004 (Application for Automatic
Extension of Time to File Certain Business Income Tax, Information, and
Other Returns) and pay what you estimate you owe on your return. You can
file a business extension online.
S Corporation Election: File
Form 2553 (Election by a Small Business Corporation) to elect to be
treated as an S corporation beginning with calendar year 2017. If Form
2553 is filed late, S corporation treatment will begin with calendar
year 2018.
March 31
Electronic Filing of Forms 1097, 1098,
1099, 3921, 3922, and W-2G: File these forms with the IRS. This due
date applies only if you file these forms electronically. Otherwise, see
February 28. (The due date for giving the recipient these forms
generally remains January 31.) For more information, see IRS Publication
1220.