The Tax Calculator & ATL Status brings you online tax checker filer or non-filer. Through App you can check if person or business is registered from FBR and paying taxes or not. App have accurate calculator for quickly getting the tax amount, monthly and yearly basis. With this simple application which required less memory of your application. You can check your status here simply you can just enter your Reference / CNIC / NTN / STN number the updated Active Payer Tax will show to you. SOURCE:-