Because I worked for a few months this year and filed for 2019 to get what I paid extra in, back. I filed march 27th and got my return april 15th. So I wasnt required to file, but did to get my extra that was taken out of my w2 back. Approx 300 dollar return. And I got my return on a turbocard. So yeah, its confusing for me here and I'm scared to **bleep** it up by using the non filers tool when I did file, even though I wasnt required to.
