August 5
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates July 29-31.

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

August 10
Employees who work for tips. Employees who received $20 or more in tips during July must report them to their employer using Form 4070.

Social security, Medicare, and withheld income tax. File Form 941 for the second quarter of 2015. This due date applies only if you deposited the tax for the quarter timely, properly, and in full.

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

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

August 17
Social security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in July. Nonpayroll withholding: If the monthly deposit rule applies, deposit the tax for payments in July.

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

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

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

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

September 2
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates August 26-28.

September 4
Employers. Semi-weekly depositors must deposit employment taxes for payroll dates August 29–September 1.