December 15: 4th Quarter 2015 estimated tax payments are due for calendar-year corporations November payroll and nonpayroll withholding taxes are due January 15: 4th Quarter 2015 estimated tax payments are due for individuals and calendar-year estates and trusts December payroll and nonpayroll withholding taxes are due February 1: W-2s and 1099s are due to employees and other payees Employer Form 941 (for 4th Quarter) and Form 944 (for 2015) are due Employer Form 940 is due for 2015 Form 945 to report income withheld for 2015 on all nonpayroll items. *If the appropriate taxes are paid in full, deposited on
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