My adult child lived with me for all of 2019 in the UK. She earned about $9,000 from a UK employer. She declared this on her US taxes, but took the foreign earned income exclusion, so her US income was effectively $0.
I did not file as Head of Household that year as her income (the $9,000) was over the limit for my claiming that status. Could I have filed as Head of Household based on her US income being $0 due to the foreign earned income credit?
If so, I assume I can file an amended 1040 for the 2019 tax year?