If my adult child lives with me and I claim them as a dependent does that effect their tax situation.

[DavidD66]

If they qualify as your dependent and you claim them, then they cannot claim themselves on their tax return.  The rules for claiming a Qualified Relative are:

Qualifying relative:

• They don't have to be related to you (despite the name).
• They aren't claimed as a dependent by someone else.
• They're a US citizen, resident alien, national, or a Canadian or Mexican resident.
• They aren’t filing a joint return with their spouse.
• They lived with you the entire year (exceptions apply).
• They made less than $5,050 in 2024.
• You provided more than half of their financial support.

When you add someone as a dependent, we'll ask a series of questions to make sure you can claim them.