@TxLass07 I appreciate the response. The issue stemmed from a signature card that they thought we had not signed and returned but in fact did. I called the bank and they said that because the mistake was only discovered in 2022, they are not able to correct the issue for any withholding that occurred in 2021. Not sure how true that is. I would have assumed that they could file an amended 1099.
In case others are looking at this post, a dependent child must file their own return if their unearned income (interest, dividends, etc.) exceeds $1,100. Source: https://turbotax.intuit.com/tax-tips/family/tax-filing-requirements-for-children/L8ice6z0K and others.
