As an individual or business, it is your responsibility to be aware of and to meet your tax filing/reporting deadlines. This calendar summarizes important tax reporting and filing data for individuals, businesses and other taxpayers for the month of September 2011.

September 2

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates August 27-30.

September 8

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates August 31-September 1 and 2.

September 9

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 3-6.

September 12

Employees who work for tips. Employees who received $20 or more in tips during August must report them to their employer using Form 4070.

September 14

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 7-9.

Monthly depositors. Monthly depositors must deposit employment taxes for payments in August.

September 15

Individuals. Third installment of estimated income tax for 2011 is due, using Form 1040-ES.

Corporations.  Third installment of estimated income tax for 2011 is due, using worksheet, Form 1120-W.

Corporations.  Corporations that timely requested an automatic six-month extension to file a 2010 calendar year income tax return Form 1120 (Form 1120S for S corporations) must file and pay any tax, interest and penalties due.  S corporations on such extension must also provide each shareholder with a copy of Schedule K-1 (Form 1120S).

Partnerships.  Partnerships that timely requested an automatic five-month extension to file a 2010 calendar year income tax return Form 1065 must file, using Form 1065 and provide each partner with a copy of Schedule K-1 (Form 1065).

September 16

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 10-13.

September 21

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 14-16.

September 23

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 17-20.

September 28

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 21-23.

September 30

Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 24-27.

If and only to the extent that this publication contains contributions from tax professionals who are subject to the rules of professional conduct set forth in Circular 230, as promulgated by the United States Department of the Treasury, the publisher, on behalf of those contributors, hereby states that any U.S. federal tax advice that is contained in such contributions was not intended or written to be used by any taxpayer for the purpose of avoiding penalties that may be imposed on the taxpayer by the Internal Revenue Service, and it cannot be used by any taxpayer for such purpose.