Upcoming Tax Deadlines
Major filing deadlines for individuals and businesses from IRS Publication 509 - Tax Calendars
Individuals - If you have an automatic 6-month extension to file your income tax return for 2015, file Form 1040, 1040A, or 1040EZ and pay any tax, interest, and penalties due.
Employers - Nonpayroll withholding. If the monthly deposit rule applies, deposit the tax for payments in September.
Employers - Social Security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in September.
Electing Large Partnerships - File a 2015 calendar year return (Form 1065-B). This due date applies only if you were given an additional 6-month extension. See March 15 for the due date for furnishing or substituting the Schedules K-1 to the partners.
November (no major deadlines to report)
Corporations - Deposit the fourth installment of estimated income tax for 2016.