Form W-2 Deadline: February 1, 2021
| Return Type | Filing Deadline | Extension Deadline |
| Individual (Form 1040) | May 17, 2021 | October 15, 2021 |
| Estates & Trusts (Form 1041) | April 15, 2021 | September 30, 2021 |
| Partnerships (Form 1065) | March 15, 2021 | September 15, 2021 |
| Corporations (Form 1120) | April 15, 2021 | October 15, 2021 |
| S Corporations (Form 1120-S) | March 15, 2021 | September 15, 2021 |
| Exempt Organizations (Form 990) | May 15, 2021 | November 15, 2021 |