There are new higher amounts of child tax credit available for 2021 thanks to the March 2021 American Relief Plan Act: $3600 for children up to (not including) 6 years. and $3000 for children 6 to 17.
Generally a good thing for most people. See https://www.thetaxadviser.com/issues/2021/jul/arpa-expands-tax-credits-families.html
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