Corporations

March 15

File a 2015 calendar year income tax return (Form 1120) and pay any tax due. If you want an automatic 6-month extension of time to file the return, file Form 7004, Application for Automatic Extension of Time To File Certain Business Income Tax, Information, and Other Returns, and deposit what you estimate you owe.

April 18

Deposit the first installment of estimated income tax for 2016. A worksheet, Form 1120-W, Estimated Tax for Corporations, is available to help you estimate your tax for the year.

June 15

Deposit the second installment of estimated income tax for 2016. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

September 15

File a 2015 calendar year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6-month extension. Otherwise, see March 15.

Deposit the third installment of estimated income tax for 2016. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

December 15

Deposit the fourth installment of estimated income tax for 2016. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

If you operate on a fiscal year, see tax calendar information for Fiscal-Year Taxpayers.

August 2016
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Upcoming Tax Dates

August 1 — Form 720 taxes
File Form 720 for the second quarter of 2016.

August 1 — Wagering tax
File Form 730 and pay the tax on wagers accepted during June.

August 1 — Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in June.

August 1 — Social security, Medicare, and withheld income tax
File Form 941 for the second quarter of 2016. Deposit or pay any undeposited tax under the accuracy of deposit rules.

August 1 — 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 1 — Federal unemployment tax
Deposit the tax owed through June if more than $500.

August 1 — All employers
If you maintain an employee benefit plan, such as a pension, profitsharing, or stock bonus plan, file Form 5500 or 5500EZ 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.

August 10 — Employees who work for tips
If you received $20 or more in tips during July, report them to your employer - Details

August 10 — 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 timely, properly, and in full.

August 10 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the first 15 days of July.

August 12 — Regular method taxes
Deposit the tax for the last 16 days of July.

August 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in July.

August 15 — Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in July.

August 25 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the last 16 days of July.

August 29 — Regular method taxes
Deposit the tax for the first 15 days of August.

August 31 — Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in July.

August 31 — Wagering tax
File Form 730 and pay the tax on wagers accepted during July.

View More Tax Dates