The Active Taxpayer List (ATL) is a central record of online Income Tax Return filers for the previous Tax Year.
ATL is published every financial year on the 1st March and is valid up to the last day of February of the next financial year. For example, Active Taxpayer List for Tax year 2017 was published on 1st March 2018 and will be valid till 28th February 2019. Similarly, Active Taxpayer List for Tax year 2018 will be published on 1st March 2019 and will be valid till 28th February 2020.
The ATL is updated on every Monday on the Federal Board of Revenue (FBR) website.