By Anytime
Employers – Income Tax Withholding. Ask employees whose withholding allowances will be different in 2014 to fill out a new Form W-4. The 2015 revision of Form W-4 will be available on the IRS website by mid-December.
November 10
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.
Employers – Social Security, Medicare, and withheld income tax. File Form 941 for the third quarter of 2014. This due date applies only if you deposited the tax for the quarter in full and on time.
November 17
Employers – Nonpayroll withholding. If the monthly deposit rule applies, deposit the tax for payments in October.
Employers – Social Security, Medicare, and withheld income tax. If the monthly deposit rule applies, deposit the tax for payments in October.