My husband and I got married several years ago. He's on Social Security and I have a small business. Up through last year, he didn't file (as married filing separately, he didn't qualify to file) and I filed as married filing separately.
This year (2019 returns) we filed jointly. We would like to go back and amend our 2017 return as married filing jointly. Is there any reason that we can't do that? Are there any rules that don't allow that?
