Affordable Care Act (ACA) information returns and transmittals are electronically filed through the ACA Information Return system, also known as AIR.
AATS for Filing Season 2020/Tax Year 2019
AATS will be unavailable beginning Thursday, 10/24/2019, midnight Eastern time through Friday, 11/01/2019, 8:59 a.m. Eastern time. AIR will update programming for Filing Season (aka Processing Year) 2020 AATS during that time.
AATS will be available beginning Friday, 11/01/2019, 9 a.m. Eastern, for Filing Season 2020 testing. Filing Season 2020 testing includes Tax Years 2019, 2018, 2017, 2016 and 2015.
|Tax Years Available||2015, 2016, 2017 and 2018||2015, 2016, 2017 and 2018|
*Scheduled Maintenance Build: A routine maintenance build is scheduled every Sunday. The system will be unavailable from 12:00 a.m. to 12:00 p.m. Eastern.
*The User Interface (UI) System will be unavailable for an additional hour from 12:00 a.m. to 1:00 p.m. Eastern on Sunday, October 20, 2019.
For more information regarding AIR, please see the AIR page on IRS.gov.