I thought it only gets phased out by $500k? I know someone who's 2021 AGI was >$200k and has 4 kids and got an advance payment...
2020 I'm assuming?
For each $1,000 earned above the $150,000/$75,000 AGI limit, the CTC refund will be reduced by $50, until the base $2,000 credit is hit. The credit does not get reduced below $2,000 until an individual earns over $200,000 and a couple filing jointly earns over $400,000, at which point the credit phases out again at a rate of $50 for each $1,000 above this threshold.
Households eligible for the base $2k (or less) credit should not be seeing advance payments. That being said I have so many dps of wrong payments, that I'm not surprised.