How will the advance child tax credit effect my 2021 taxes?

[erlegree]

It seems like this is more like a tax return advance than a stimulus. If I accept the monthly tax credit, how does that effect my 2021 return?

[fanfare]

do you have a choice? I don't think you can decline those payments.

[SweetieJean]

See this:

Solved: Can I decline the child tax credit for 2021? (intuit.com)