@TriniNessa04 wrote:
So will my boyfriend have to also include supporting docs by mail? Do you think they’ll come back with a different return amount that what TT gave?
Your partner does not include any documents. Generally, the IRS will pay the refund as requested on his tax return (they will accept the dependent claim when filing by mail, even though it is blocked for e-filing).
About 6-9 months after filing, if there is still a duplicate dependent claim in the IRS computers, the IRS will send letters to both people who claimed the dependent to advise them that there is a problem. When that happens, sometimes that conflict is resolved by mailing documents. But if you have amended your return by that time to remove the conflicting dependent, the need for an IRS letter will never come up.
