We have compiled the list below for our W2 Mate and Payroll Mate software customers who need to file W2 forms with their state, either on paper or through e-Filing. These are the final requirements and due dates for the 2020 / 2021 tax season. This list was finalized on December 1, 2020 and we do not anticipate any changes for the current season beyond this date.
| State | Filing Due Date | Electronic Filing Requirements |
| AL | January 31, 2021 | Mandatory, 25 or more forms; upload to state website |
| AR | January 31, 2021 | Mandatory, 250 or more forms; upload to state website, CD / DVD MEDIA |
| AZ | January 31, 2021 | Optional; CD / DVD MEDIA |
| CO | January 31, 2021 | Mandatory, more than 250 forms; upload to state website |
| CT | January 31, 2021 | Mandatory, 25 or more forms; upload to state website |
| DC | January 31, 2021 | Mandatory, 25 or more forms; upload to state website |
| DE | January 31, 2021 | Mandatory, 250 or more forms; upload to state website |
| GA | January 31, 2021 | Mandatory, 250 or more federal forms; upload to state website |
| HI | February 28, 2021 | Mandatory, 250 federal forms; upload to state website |
| IA | February 15, 2021 | No minimum; upload to state website |
| ID | January 31, 2021 | Mandatory, 50 forms; upload to state website |
| IL | January 31, 2021 | Mandatory, all employers; upload to state website |
| IN | January 31, 2021 | Mandatory, 26 or more forms; upload to state website |
| KS | January 31, 2021 | Mandatory, 51 or more forms; upload to state website |
| KY | January 31, 2021 | Mandatory, 26 or more forms; upload to state website, CD |
| LA | January 31, 2021 | Mandatory, 50 or more forms; upload to state website, CD / DVD MEDIA |
| MA | January 31, 2021 | Mandatory, 50 or more forms; upload to state website |
| MD | January 31, 2021 | Mandatory, 25 or more forms; upload to state website |
| ME | January 31, 2021 | Mandatory, 250 or more federal forms; upload to state website |
| MI | February 28, 2021 | Mandatory, 250 or more forms; upload to state website |
| MN | January 31, 2021 | Mandatory, 10 or more forms; upload to state website |
| MO | January 31, 2021 | Mandatory, 250 or more forms; upload to state website |
| MS | January 31, 2021 | Mandatory, 25 or more forms |
| MT | January 31, 2021 | Optional; upload to state website |
| NC | January 31, 2021 | Mandatory, 250 or more forms; upload to state website or CD |
| ND | January 31, 2021 | Mandatory, 10 or more forms; upload to state website, email with text file attachment |
| NE | January 31, 2021 | Mandatory, more than 50 forms; upload to state website |
| NJ | February 15, 2021 | Mandatory; upload to state website |
| NM | January 31, 2021 | Mandatory for employers with more than 25 employees; upload to state website |
| OH | January 31, 2021 | Mandatory, 250 or more forms; upload to state website |
| OK | January 31, 2021 | Mandatory, all employers; upload to state website |
| OR | January 31, 2021 | Mandatory, all employers; upload to state website |
| PA | January 31, 2021 | Mandatory, 10 or more forms; Use E-Tides website |
| RI | January 31, 2021 | Mandatory, 25 or more state forms |
| SC | January 31, 2021 | Mandatory, 250 or more forms; upload to state website |
| UT | January 31, 2021 | Mandatory, all employers; upload to state website |
| VA | January 31, 2021 | Mandatory, all employers; upload to state website |
| VT | January 31, 2021 | Mandatory, 25 or more forms; upload to state website |
| WI | January 31, 2021 | Mandatory, 10 or more forms; upload to state website |
| WV | January 31, 2021 | Mandatory, 25 or more forms; upload to state website |