Unfortunately, you cannot add your newborn child that was born in 2021 on your 2020 tax return. To claim a baby as a dependent for 2020 the baby must have been born during the current tax year, in other words, the baby had to be born before or on December 31, 2020. Since your baby was born after you will have to wait until 2022 when it comes time to file your taxes for the 2021 season to claim your baby as a dependent.
For more information on who you could claim as a dependant, please see the link below:
Who Can I Claim as a Dependant on my Tax Return?
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