KEY TAX DEADLINES

1. Taxpayers adopting Calendar Years
A. Estimated Tax 
1st Quarter April 15
2nd Quarter June 15
3rd Quarter September 15
4th Quarter January 15
B. Tax ReturnsRegularExtended
Form 990 – Non Profit OrganizationsMay 15November 15
Form 1040 – IndividualsApril 15October 15
Form 1041 – Trusts & EstatesApril 15October 15
Form 1065 – Partnerships March 15September  15
Form 1120 S – S CorporationsMarch 15September  15
Form 1120 – C CorporationsApril 15September 30
2. Fiscal Year Filers 
Partnership & S Corporations 15th day of the third month after the end of their fiscal tax year
C Corporations tax returns will be due the 15th day of the fourth month after the end of their fiscal tax year
3. ‘1099’s / W2’s / W3’s & Others
W2/W3 – Paper FilingJanuary 31
1099/1096 – Paper FilingJanuary 31
1094-C/1095-C – Paper FilingJanuary 31
W2/W3 – efileMarch 31
1099/1096 – efileMarch 31
1094-C/1095-C – efileMarch 31
4. Quarterly 941’s – Payroll Report
1st QuarterApril 30
2nd QuarterJuly 31
3rd QuarterOctober 31
4th QuarterJanuary 31
5. Annual 940’s FUTA Report 
Annual – Form 940January 31
Form 5500 Series – Employee Benefit PlanJuly 31
Form 5500 Series – Employee Benefit Plan – ExtendedOctober 15
Employee Benefit Plan tax returns are due The last day of the seventh month after the plan year ends

If the tax due date would fall on a Saturday, Sunday or Federal holiday, then the due date is next Federal working day.