Business 1120 Edition

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Corporations

April 18

Deposit the first installment of estimated income tax for 2017. A worksheet, Form 1120-W, Estimated Tax for Corporations, is available to help you estimate your tax for the year.

File a 2016 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.

June 15

Deposit the second installment of estimated income tax for 2017. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.

September 15

File a 2016 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 2017. 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 2017. 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.

March 2017
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Upcoming Tax Dates

March 1 — Farmers & fishermen
File your 2016 income tax return (Form 1040) and pay any tax due Details

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

March 11 — 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 February. Details

March 14 — Regular method taxes
Deposit the tax for the last 13 days of February.0

March 15 — S Corporations
File a 2016 calendar year income tax return (Form 1120S) and pay any tax due Details

March 15 — S Corporation election
File Form 2553, Election by a Small Business Corporation, to elect to be treated as an S corporation beginning with calendar year 2017. If Form 2553 is filed late, S corporation treatment will begin with calendar year 2018.

March 15 — Partnerships
File a 2016 calendar year return (Form 1065) Details

March 15 — Electing larger partnerships
Provide each partner with a copy of Schedule K1 (Form 1065B), Partner's Share of Income (Loss) From an Electing Large Partnership, or a substitute Schedule K1. This due date applies even if the partnership requests an extension of time to file the Form 1065B by filing Form 7004

March 15 — Partnerships
Electing large partnerships: File a 2016 calendar year return (Form 1065-B) Details

March 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule Page 6 Publication 509 (2015) applies, deposit the tax for payments in February.

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

March 25 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the last 14 days of February.

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

March 31 — Electronic filing of Forms W2
File copies of all the Forms W2 you issued for 2016. This due date applies only if you electronically file.

March 31 — Electronic filing of Forms W2G
File copies of all the Forms W2G you issued for 2016. This due date applies only if you electronically file.

March 31 — Electronic filing of Forms 8027
File Forms 8027 for 2016. This due date applies only if you electronically file.

March 31 — Wagering tax
File Form 730 and pay the tax on wagers accepted during February.

View More Tax Dates