It sounds like both your rebate recovery credit and child tax credits are being partially phased out or completely eliminated due to your income level. You get the rebate recovery credit if you did not receive the full amount of stimulus for the third payment between March and May of 2021. It is normally $1,400 per eligible member of your household. The amount you received was reported on Letter 6475 from the IRS. The amount starts to decrease at these income levels:
- $150,000 if married and filing a joint return or if filing as a qualifying widow or widower
- $112,500 if filing as head of household or
- $75,000 for eligible individuals using any other filing statuses, such as single filers and married people filing separate returns.
You are not eligible for it at all if your income exceeded:
- $160,000 if married and filing a joint return or if filing as a qualifying widow or widower
- $120,000 if filing as head of household or
- $80,000 for eligible individuals using other filing statuses, such as single filers and married people filing separate returns.
If you received a partial payment due to your gross income in 2020, and it turns out you were not eligible because your income increased in 2021, you do not have to pay it back or report it on your tax return.
The child tax credit on your return is calculated as amount of child tax credit you are eligible for minus amount of advanced child tax credit you already received. The amount you already received was reported by the IRS on Letter 6419. The amount you are eligible for phases out at two different income levels for your household. Your child tax credit starts at $3,600 for each child under 6 and $3,000 for children ages 6-17. It is reduced to $2,000 per child by $50 for each $1,000 your income is above:
- 150,000 if married and filing a joint return or if filing as a qualifying widow or widower;
- $112,500 if filing as head of household; or
- $75,000 if you are a single filer or are married and filing a separate return.
Your child tax credit is further reduced by $50 per $1,000 of your income if it exceeds:
- $400,000 if married and filing a joint return; or
- $200,000 for all other filing statuses.
It sounds like the IRS sent you $2,000 in advanced payments and TurboTax determined, based on the number and age of your children and your income level that you should have gotten $4,200 in child tax credit. Since you already received $2,000 the child tax credit on your return is the remainder of it, $2,200 which is reported on Line 28 of Form 1040. If you experimented by increasing the amount that you already received as advanced child tax credit payment, that would reduce the amount you would now claim on your tax return. The $4,200 of total child tax credit would remain the same.