September 2016 Federal Tax Deadline.

September 15Individuals:

Form 1040.    This form is due on the 15th day of the 4th month after the end of your tax year. Form 4868 is used to request an extension of time to file Form 1040.

Estimated tax payments (Form 1040-ES).   Payments are due on the 15th day of the 4th, 6th, and 9th months of your tax year and on the 15th day of the 1st month after your tax year ends.

Make a payment of your 2016 estimated tax if you are not paying your income tax for the year through withholding (or will not pay in enough tax that way). Use Form 1040-ES. This is the third installment date for estimated tax in 2016.

 

September 15Corporations:

File a 2015 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. Deposit the third installment of estimated income tax for 2016. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

Estimated tax payments.   Payments are due on the 15th day of the 4th, 6th, 9th, and 12th months of the corporation's tax year.

Form 7004 is used to request an extension of time to file Form 1120 or Form 1120S.

 

September 15S Corporations:

File a 2015 calendar year income tax return (Form 1120S) and pay any tax due. This due date applies only if you timely requested an automatic 6-month extension. Provide each shareholder with a copy of Schedule K-1 (Form 1120S) or a substitute Schedule K-1. Also, keep in mind, Form 2553 is the required form to be used when electing S corporation treatment. It is due no more than two months and 15 days after the beginning of the tax year the election is to take effect or at any time during the preceding tax year.

Estimated tax payments.   Payments are due on the 15th day of the 4th, 6th, 9th, and 12th months of the corporation's tax year.

      Form 7004 is used to request an extension of time to file Form 1120 or Form 1120S.

 

      September 15Partnerships:

     File a 2015 calendar year return (Form 1065). This due date applies only if you were given an additional 5-month                   extension.

Form 1065:   This form is due on the 15th day of the 4th month after the end of the partnership's tax year.  Provide each partner with a copy of their Schedule K-1 (Form 1065) or substitute Schedule K-1 (Form 1065) by the 15th day of the 4th month after the end of the partnership's tax year. Form 7004 is used to request an automatic 6-month extension of time to file Form 1065.

Form 1065-B (electing large partnerships):   This form is due on the 15th day of the 4th month after the end of the partnership's tax year. Provide each partner with a copy of their Schedule K-1 (Form 1065-B) or substitute Schedule K-1 (Form 1065-B) by the first March 15 following the close of the partnership's tax year. This due date for filing Schedule K-1 (Form 1065-B) applies even if the partnership requests an extension of time to file Form 1065-B. Form 7004 is used to request an automatic 6-month extension of time to file Form 1065-B.