You would only claim them on one W-4. This is taking into consideration the child tax credit which you only get one per child.
Your 18 year old is not eligible for the Child Tax Credit, so you would only have one. Your 18 year old may qualify for the Other Dependent Credit on your 2023 taxes, but depending on what they do after graduation, they may or may not qualify as a dependent next year.
If you claim them on your W4 you are basically getting your child tax credit and other dependent credit now instead of at the end of the year.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
