Employers - Social Security, Medicare, and withheld income tax. File form 941 for the second quarter of 2012. This due date applies only if you deposited the tax for the quarter in full and on time.

August 15

Employers - Nonpayroll withholding. If the monthly deposit rule applies, deposit the tax for payments in July.

Employers - Social security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in July.