The child tax credit is one of the most valuable tax breaks for families, reducing your tax bill by a set amount for each qualifying child. Because it is a credit rather than a deduction, it cuts your tax dollar for dollar. A portion is even refundable, meaning it can put money in your pocket if it exceeds what you owe.
Who qualifies as a child
To claim the credit, a child must generally be under 17 at the end of the tax year, be your dependent, live with you for more than half the year, and have a valid Social Security number. The child must also not provide more than half of their own support. Qualifying relationships include your children, stepchildren, foster children, siblings, and their descendants. Meeting all the tests is what unlocks the per-child amount.
How much the credit is worth
The credit is worth up to $2,200 per qualifying child for 2025, applied directly against your tax. A separate, smaller credit for other dependents — such as older children or elderly parents — is available for those who do not meet the child requirements. Because it is a credit, each qualifying child reduces your tax bill by the full amount, not just a fraction of it. That makes it far more powerful than a deduction of the same size.
The refundable portion
The full credit is only partly refundable, meaning if the credit exceeds your tax you can receive part of it as a refund — up to roughly $1,700 per child for 2025. This refundable piece, sometimes called the additional child tax credit, helps lower-income families who owe little or no income tax. The nonrefundable remainder can only offset tax you actually owe. The refundable design ensures working families with modest tax bills still benefit.
Income phase-outs
The credit begins to shrink once your modified adjusted gross income passes $200,000 for single filers or $400,000 for married couples filing jointly. Above those thresholds it drops by $50 for every $1,000 of income over the limit. Most middle-income families receive the full amount, while very high earners see it reduced or eliminated. Knowing where the phase-out starts helps higher earners plan.
A married couple with two young children and a $90,000 income claims $2,200 per child, cutting their tax by $4,400. If their tax before the credit was only $3,000, the credit wipes that out and the refundable portion returns part of the remainder as a refund.
Key takeaways
- The child tax credit reduces your tax dollar for dollar for each qualifying child under 17.
- For 2025 it is worth up to $2,200 per child, with a valid Social Security number required.
- Up to about $1,700 per child is refundable if the credit exceeds your tax.
- A smaller credit for other dependents covers those who do not qualify as children.
- The credit phases out above $200,000 (single) or $400,000 (married filing jointly) of income.
Common mistakes
- Claiming the credit for a child who turned 17 during the tax year.
- Forgetting the child needs a valid Social Security number issued by the filing deadline.
- Assuming the entire credit is refundable when only part of it is.
FAQ
Can I claim the credit for a college-age child?
Not the full child tax credit, but a child 17 or older who is your dependent may qualify for the smaller credit for other dependents.
Does the credit help if I owe no tax?
If you owe no tax, you can still receive the refundable portion — up to about $1,700 per child — as a payment.