August 1

Employers – Social Security, Medicare, and withheld income tax. File Form 941 for the second quarter of 2016. Deposit any undeposited tax. (If your tax liability is less than $2,500, you can pay it in full with a timely filed return.) If you deposited the tax for the quarter in full and on time, you have until August 10 to file the return.

Employers – Federal unemployment tax. Deposit the tax owed through June if more than $500.

Employers – If you maintain an employee benefit plan, such as a pension, profit-sharing, or stock bonus plan, file Form 5500 or 5500-EZ for calendar-year 2015. If you use a fiscal year as your plan year, file the form by the last day of the seventh month after the plan year ends.

Certain Small Employers – Deposit any undeposited tax if your tax liability is $2,500 or more for 2016 but less than $2,500 for the second quarter.

August 10

Employees Who Work for Tips – If you received $20 or more in tips during July, report them to your employer. You can use Form 4070.

Employers – Social Security, Medicare, and withheld income tax. File Form 941 for the second quarter of 2016. 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.