I am just confused as to how to fill out the 1040x. I read the instructions but I’m unsure as to what information the irs needs as my new w2 has much different and higher numbers from 2019 vs 2018. When I looked on the irs website, the 1040x was available, if I am looking at it correctly. So do I need to refile my whole w2 taxes, or do I just fill out the 1040x? Thank you for your help.
