So I filed my federal so far, not state yet. After realizing after I submitted it that I had forgot to add my 2 gambling winnings. I now have to ammend my federal. It says the form will be available end of Feb. Do I need to mail this in, or can it be done online? Also I read somewhere you have 2 years to ammend/fix. By amending my federal I'll still have to pay in either way. Not sure what I should do
