No, there is no income limit for claiming dependents. You can claim as many children as you have, but there is an income limit for the Advanced Child Tax Credit/Refundable Child Tax Credit.
There is a phaseout for the Advanced Child Tax Credit/Refundable Child Tax Credit for 2021. The Child Tax Credit phases out in two different steps based on your modified adjusted gross income (AGI) in 2021.
The first phaseout can reduce the Child Tax Credit to $2,000 per child.
The second phaseout can reduce the remaining Child Tax Credit below $2,000 per child.
The Child Tax Credit begins to be reduced to $2,000 per child if your modified AGI in 2021 exceeds:
The first phaseout reduces the Child Tax Credit by $50 for each $1,000 (or fraction thereof) by which your modified AGI exceeds the income threshold described above that is applicable to you.
The Child Tax Credit won’t begin to be reduced below $2,000 per child until your modified AGI in 2021 exceeds:
The second phaseout reduces the Child Tax Credit by $50 for each $1,000 (or fraction thereof) by which your modified AGI exceeds the income threshold described above that is applicable to you.