Tax calendar
2027 tax calendar for small businesses.
Every federal date for a calendar-year business, by type. Pick yours.
Every date, as a list
By business type.
The same dates as the calendar above, for printing or reading aloud.
Sole proprietor
Jan 15
Q4 estimated tax
Calculated
Feb 1
1099-NEC to contractors
We file
Apr 15
Form 1040 + Q1 estimate
We file
Jun 15
Q2 estimated tax
Calculated
Sep 15
Q3 estimated tax
Calculated
Oct 15
Extended Form 1040
We file
Partnership / LLC
Jan 15
Q4 estimated tax
Calculated
Feb 1
1099-NEC to contractors
We file
Mar 15
Form 1065 + K-1s
We file
Apr 15
Owners’ 1040s + Q1 estimate
We file
Jun 15
Q2 estimated tax
Calculated
Sep 15
Extended 1065 + Q3 estimate
We file
Oct 15
Extended 1040s
We file
S corporation
Jan 15
Q4 estimated tax
Calculated
Feb 1
W-2s, 1099s, 940, 941
We file
Mar 15
Form 1120-S + K-1s
We file
Apr 15
Owners’ 1040s + Q1 estimate
We file
Apr 30
Form 941, Q1
We file
Jun 15
Q2 estimated tax
Calculated
Aug 2
Form 941, Q2
We file
Sep 15
Extended 1120-S + Q3 estimate
We file
Oct 15
Extended 1040s
We file
Nov 1
Form 941, Q3
We file
C corporation
Feb 1
W-2s, 1099s, 940, 941
We file
Apr 15
Form 1120 + Q1 estimate
We file
Apr 30
Form 941, Q1
We file
Jun 15
Q2 corporate estimate
Calculated
Aug 2
Form 941, Q2
We file
Sep 15
Q3 corporate estimate
Calculated
Oct 15
Extended Form 1120
We file
Nov 1
Form 941, Q3
We file
Dec 15
Q4 corporate estimate
Calculated
Dates for calendar-year businesses, with weekend and holiday moves applied. Check with us before relying on them.
Free, before the call
Send us last year’s return.
We’ll read it before the call and tell you, free, what we’d have done differently.