A comment on paper returns.
I filed my 2017 paper returns with the Federal and State a year ago using FedEx. I had an extension due to my overseas service with Peace Corps. FedEx delivered the documents (Fresno, California and Denver, Colorado) and nothing ever happened. I assume they "filed" them in the trash.
I am going to file my 2018 taxes by paper soon and will refile my 2017 taxes all together. Perhaps I will have better luck this time.
Former Peace Corps Volunteer serving in Ecuador.
