- January 31 Issue 2023 Forms W-2 and 1099 to employees and independent contractors
- February 15 For employees, update exemptions on Forms W-4 provided to employers
- March 1 For farmers and fishermen with taxes due, file 2023 individual income tax returns and pay taxes without penalties
- March 15 File 2023 tax returns for S-Corps and Partnerships, or request automatic filing extensions
- April 15 File 2023 tax returns for Individuals, Trusts, and C-Corps, or request automatic filing extensions
- April 15 Last day to contribute to a Traditional IRA, Roth IRA, SEP-IRA or HSA for the 2023 tax year
- June 17 For U.S. citizens living abroad, file Individual tax returns, or request a 4-month extension
- September 16 File 2023 tax returns for S-Corps and Partnerships that have been given a 6-month extension
- October 1 For existing employers, last day to establish a Simple IRA plan
- October 15 File 2023 tax returns for Individuals, Trusts, and C-Corps that have been given a 6-month extension
Source: Internal Revenue Service, 2023
