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@jeanmarc wrote:

since he wants to file as single and non-dependent.

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Back up.  He "wants" to file as a non-dependent?  What he "wants" doesn't matter; does he qualify as a dependent of the parents?  That determination is a matter of facts, not what he "wants".

Whether or not he qualifies as a dependent will affect what needs to be done with the 1095-A to file his tax return.