Yes, your child will be your dependent in year 2021. make sure when you record your child's information in the My Info section that your child lived with you for the entire year so can claim the child tax credit and the Earned Income Credit, if you qualify for this credit.
Also you may file jointly but there is a question in the My info section that asks Someone else can claim my spouse as a dependent on their tax return. Here you must check the box that he can be claimed as a dependent of someone else.
Congratulations on the birth of your child. Give it a big kiss and hug from me!!
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