The IRS has indicated shutdown begins on Saturday, November 18, 2023, at 11:59 p.m. Eastern time, in order to prepare the system for the upcoming Tax Year 2023 Filing Season. After this date and time, no returns can be electronically filed. Additional information available here.
Note: TaxSlayer Pro applications will still be available after the cutover, but if you prepare returns, you will need to file them via paper until the IRS brings their 1040 MeF system back online in late January. When the 1040 MeF system comes back online, you will be able to electronically file the following years: 2023, 2022, and 2021.