What is filer in Pakistan?
What is Filer and Non-Filer | Tax in Pakistan
Who is called a Tax Filer in Pakistan? As already discussed above, filers are individuals who appear on the IRS’s list of “Active Taxpayers.” All taxpayers must file their annual income tax returns through FBR’s online portal IRIS in order to appear on this list.

How can I check my CNIC filer status?
Check Active Taxpayer status by SMS
Type “ATL (space) 13 digits Computerised National Identity Card (CNIC)” and send to 9966. Check Active Taxpayer status of AOP and Company by SMS through the following procedure: Type “ATL (space) 7 digits National Tax Number (NTN)” and send to 9966.

How do I check my NTN filer?
Procedure To Check Active Taxpayer Status Of AJK By Sms
For Individuals. Step 1: Type AJKALT-space-CNIC. For example; AJKALT 8320641868887. Step 2: Send it to 9966 (as SMS)
For Companies. Step 1: Type AJKALT-space-National Tax Number. For example; ALT 22075585676. Step 2: Send it to 9966 (as SMS)

Is CNIC your NTN number?
Taxpayer Registration basics
In case of individuals, 13 digits Computerised National Identity Card (CNIC) will be used as NTN or Registration Number. NTN or Registration Number for AOP and Company is the 7 digits NTN received after enrolment.