All due dates assume that the date falls on a business day. If the due date falls on a holiday or weekend, the due date will be the next business day.
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September 2018
Employers
Nonpayroll Withholding. If the monthly deposit rule applies, deposit the tax for payments in August.
Find out more »Employers
Social Security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in August.
Find out more »October 2018
Trusts and Estates
File Form 1041. This due date applies only if you were given an additional 5-month extension. Otherwise, see April 17.
Find out more »Employees Who Work for Tips
If you received $20 or more in tips during September, report them to your employer. You can use Form 4070…
Find out more »Individuals
If you have an automatic 6-month extension to file your income tax return, file Form 1040, 1040A, 1040EZ, FBAR Form…
Find out more »Corporations
File Form 1120 or 1120-A and pay any tax due. This due date applies only if you timely requested an…
Find out more »Employers
Nonpayroll Withholding. If the monthly deposit rule applies, deposit the tax for payments in September.
Find out more »Employers
Social Security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in September.
Find out more »Employers
Social Security, Medicare, and withheld income tax. File form 941 for the third quarter of the current year. Deposit any…
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Federal Unemployment Tax. Deposit the tax owed through September if more than $500.
Find out more »Employers
Income Tax Withholding. Ask employees whose withholding allowances will be different in the next calendar year to fill out a…
Find out more »November 2018
Employers
This due date applies only if you deposited the tax for the quarter in full and on time.
Find out more »Employees Who Work for Tips
If you received $20 or more in tips during October, report them to your employer. You can use Form 4070…
Find out more »Employers
Nonpayroll Withholding. If the monthly deposit rule applies, deposit the tax for payments in October.
Find out more »Employers
Social Security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in October.
Find out more »Exempt Organizations
File Form 990. This due date applies only if you timely requested an automatic 6-month extension. Otherwise, see May 15.
Find out more »December 2018
Employees Who Work for Tips
If you received $20 or more in tips during November, report them to your employer. You can use Form 4070…
Find out more »Corporations
Deposit the fourth installment of your estimated income tax. A worksheet, Form 1120-W, is available to help you estimate your…
Find out more »Employers
Social Security, Medicare, and withheld income tax – If the monthly deposit rule applies, deposit the tax for payments in…
Find out more »Employers
Nonpayroll Withholding. If the monthly deposit rule applies, deposit the tax for payments in November.
Find out more »