The Child Tax Credit (CTC) is one of the most valuable tax benefits for families — worth up to $2,000 per qualifying child for the 2025 tax year. Unlike a deduction, which reduces your taxable income, the Child Tax Credit reduces your tax bill dollar-for-dollar. Up to $1,700 of it can be refundable, meaning you can receive part of it even if you owe no federal income tax. This guide walks through who qualifies, how to claim it, and how the credit phases out for higher-income families.
How much the Child Tax Credit is worth
For the 2025 tax year, the Child Tax Credit is worth up to $2,000 per qualifying child under age 17. Of that, up to $1,700 can be received as the Additional Child Tax Credit (ACTC) — the refundable portion that delivers money to families even when their tax liability is zero. The remaining $300 of the maximum credit is non-refundable; it can reduce your tax bill to zero but won’t produce a refund on its own.
Who qualifies as a “qualifying child”
The IRS uses a specific set of rules to determine whether a child qualifies. The child must meet all of the following:
- Be under age 17 at the end of the tax year (December 31)
- Be your son, daughter, stepchild, foster child, brother, sister, stepbrother, stepsister, half-brother, half-sister, or a descendant of any of those (such as a grandchild, niece, or nephew)
- Provide no more than half of their own financial support during the year
- Have lived with you for more than half the tax year (with limited exceptions for temporary absences like school, illness, or military service)
- Be claimed as a dependent on your tax return
- Not file a joint return for the year (unless filed only to claim a refund of withheld income tax)
- Be a U.S. citizen, U.S. national, or U.S. resident alien
- Have a valid Social Security Number issued before the due date of your tax return
That last rule is critical. A child with only an Individual Taxpayer Identification Number (ITIN) does not qualify for the Child Tax Credit — though they may qualify for the smaller Credit for Other Dependents ($500).
How the income phase-out works
The full $2,000 per child is available to families with modified adjusted gross income (MAGI) up to:
- $400,000 for married couples filing jointly
- $200,000 for all other filers (single, head of household, married filing separately)
Above those thresholds, the credit phases out at a rate of $50 for every $1,000 (or fraction thereof) of income over the limit. A married couple earning $440,000 with two children would see their credit reduced by $2,000 ($50 × 40 = $2,000), eliminating one full child’s credit.
How to claim the Child Tax Credit
To claim the credit, you complete Form 1040 and attach Schedule 8812 (“Credits for Qualifying Children and Other Dependents”). Schedule 8812 also calculates the refundable portion (the Additional Child Tax Credit). Most tax software handles this calculation automatically when you enter your dependents and basic income.
If you’re filing on paper, double-check the Social Security Numbers for each child — a typo or invalid SSN is one of the most common reasons the credit gets denied or delayed.
The Credit for Other Dependents ($500)
Families who support people who don’t meet the qualifying-child rules — for example, a 17- or 18-year-old still in high school, a college student, an elderly parent, or a child with an ITIN — may qualify for the Credit for Other Dependents instead. This non-refundable credit is worth up to $500 per qualifying dependent. The income phase-out thresholds are the same as the Child Tax Credit.
Common Child Tax Credit mistakes to avoid
- Claiming a child older than 16 (must be under 17 on December 31)
- Missing the SSN requirement (an ITIN doesn’t count for the CTC)
- Both parents (divorced or separated) claiming the same child — only one parent can claim per year
- Forgetting Schedule 8812 when filing on paper
- Not accounting for the income phase-out at higher earnings
How the CTC compares to other family-related tax breaks
The Child Tax Credit isn’t the only tax benefit available to families. Several others may apply depending on your situation:
- Earned Income Tax Credit (EITC) — a refundable credit for low- and moderate-income working families; can be worth thousands more than the CTC for qualifying households
- Child and Dependent Care Credit — covers a portion of daycare, after-school care, or summer camp costs for children under 13 when both parents work
- Adoption Credit — up to about $16,810 per adopted child for qualifying adoption expenses (2024 figure; adjusts yearly)
- American Opportunity Credit — for college expenses, generally claimed by parents of dependent college students
Further Reading
- Earned Income Tax Credit (EITC) Explained
- Tax Credits vs. Tax Deductions: What’s the Difference?
- How Tax Brackets Work
- Standard Deduction vs. Itemizing
- How to File Your Taxes for Free
This article is for general educational purposes only and does not constitute tax or financial advice. Tax laws and dollar amounts change yearly — verify current rules with the IRS (irs.gov) or consult a qualified tax professional before making decisions.