2021 Tax Deadlines for Filing 2020 Business Returns

2021 Tax Deadlines for Filing 2020 Business Returns

Partnership Tax Deadlines Due Date
Original tax deadline for partnerships (Form 1065) March 15, 2021
Extension tax deadline for partnerships (Form 1065) September 15, 2021
S Corporation Tax Deadlines Due Date
Original tax deadline for S Corporations (Form 1120-S) March 15, 2021
Extension tax deadline for S Corporations (Form 1120-S) September 15, 2021
C Corporation Tax Deadlines Due Date
Original tax deadline for C Corporations (Form 1120) April 15, 2021
Extension tax deadline for C Corporations (Form 1120) October 15, 2021
Sole Proprietor Tax Deadlines Due Date
Original tax deadline for sole proprietors and individuals (Form 1040) April 15, 2021
Extension tax deadline for sole proprietors and individuals (Form 1040) October 15, 2021
Nonprofit Tax Deadlines Due Date
Original tax deadline for exempt organizations (Form 990) May 15*, 2021
Extension tax deadline for exempt organizations (Form 990) November 15, 2021

* May 15 is a Saturday, so the deadline will be the next business day, which is Monday, May 17, 2021.