Hi SFG6255.
There is a calculator for the 2021 Child Tax Credit in this article.
https://turbotax.intuit.com/tax-tips/family/7-requirements-for-the-child-tax-credit/L3wpfbpwQ
The Advanced credit is only half of the new 2021 Child Tax Credit split out monthly from July to December. Are you expecting the full amount for each child? Or are you only receiving half the credit for only one child. Here is the IRS link with all the Advanced Child Tax Credit information and access to your account information on it:
https://www.irs.gov/credits-deductions/advance-child-tax-credit-payments-in-2021
Let me know if this answers your question.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"