Sounds similar to my situation. My adult daughter, 36 yo, did begin staying with me in 2020 but I thought it was just a temp situation (long story, bad and long), so never gave a second thought to it. I did not claim her for 2020. She has, however, continued to stay with me. She has full access to the house, I let her fully use one of my vehicles, she eats some of my food, but I do not give her cash to buy anything, and she doesn't now have a real job so she definitely has less than $4300 income. I want to claim her in 2021 as a dependent since I feel that what I do provide would equal more than 1/2 of her support. The question I have is since she did receive the $1400 check in 2021 and I received my $1400 in 2021, can I really claim her now and be eligible for the amount I would have received for having myself and her as dependents on this year's taxes? The money would really help but I don't want to get into a situation where I'd have to pay it back if we aren't really eligible for it given my own limited income.
