My 26-year-old son made just $1,000 working and lived with us the entire year (2018). When he completed his return he stated someone else could and would claim him as a dependent (my husband and I). He filed on time and received a nominal refund. My husband and I filed an extension, but now as we are working on preparing our taxes, we find we should NOT claim him as a dependent. I know we can just remove him from our personal section, but should he file a 1040X? He'll get a bit more back from the IRS and, more importantly, his return would be corrected, right?
