Dates

Jan
31
Wed
2018
W-2 due
Jan 31 all-day

Employers must file W-2s with Social Security Administration & 1099s with IRS.

1099 MISC due
Jan 31 all-day
Feb
28
Wed
2018
1099 due (filed by mail)
Feb 28 all-day
Mar
15
Thu
2018
Foreign Trusts with U.S. Owner Form 3520-A due
Mar 15 all-day
Partnership Form 1065 due
Mar 15 all-day
S Corporation Form 1120S due
Mar 15 all-day
Mar
31
Sat
2018
1099 due (filed electronically)
Mar 31 all-day
Apr
15
Sun
2018
C Corporation Form 1120 due
Apr 15 all-day
Individual Form 1040 due
Apr 15 all-day
FinCEN Report 114 due
Apr 15 all-day
Trust and Estate Form 1041 due
Apr 15 all-day
Apr
30
Mon
2018
1st Quarter Payroll Reports due
Apr 30 all-day
May
15
Tue
2018
Form 990 Due
May 15 all-day

Last day for exempt organizations to file 2013 income tax returns unless 3 month extension is requested.

Exempt Organizations Form 990 due
May 15 all-day
Jul
31
Tue
2018
2nd Quarter Payroll Reports Due
Jul 31 all-day
Employee Benefit Plans Form 5500 due
Jul 31 all-day
Sep
15
Sat
2018
C Corporation Form 1120 extension
Sep 15 all-day
Foreign Trusts with U.S. Owner Form 3520-A extension
Sep 15 all-day
Partnership Form 1065 extension
Sep 15 all-day
S Corporation Form 1120S extension
Sep 15 all-day