Husband and I received 4464c letter dated 3/9/2018 saying our return is under review. He's been the one who always filed but this year I worked and he did not (he started his job in December so only claimed one paycheck on our taxes). No major changes other than that and we didn't have to file an injured spouse form this tax season as well. The letter states as one of the reasons we're under additional review is "business income you reported on your return". We don't own any businesses so I'm wondering why they are even looking at that? We didn't claim any business income or anything. Literally only had 3 w2's to claim and we have 2 children together that we've always claimed. Not sure if there are errors on our return or what.
