)
or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
Check the operational status for the Affordable Care Act Information Returns (AIR) system. This includes the production and testing systems.
AATS opening date for TY2026
The AATS environment will be available beginning Friday, October 16, 2026, for Filing Season 2027/Tax Year 2026 testing, which only includes Tax Year 2026. Prior year testing will not be available at this time.
AIR is unavailable Sundays 12 a.m. – 12 p.m. ET due to routine maintenance.
Production system
operational
Assurance Testing System (AATS)
Operational