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 2012.

September 6
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates August 29-31.

September 7
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 1-4.

September 10
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 12
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 5-7.

September 14
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 8-11.

September 17
Corporations. Corporations deposit the third installment of estimated tax for 2012.
Corporations. Corporations and S corporations with 6-month extensions file Form 1120 or 1120S and pay tax due.
Partnerships. Partnerships with 5-month extensions file Form 1065.

September 19
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 12-14.

September 21
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 15-18.

September 26
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 19-21.

September 28
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 22-25.

October 5
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 26-28.

October 6
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates September 29-30.