The Child Tax Credit Explained: Who Qualifies and How Much

The Child Tax Credit is one of the most valuable tax breaks for American families. Unlike a deduction that only reduces your taxable income, a credit reduces your tax bill dollar for dollar, and part of it can be refundable, meaning you can receive money even if you owe no tax. This guide explains how the credit works, who qualifies, how it phases out and what to watch for when you claim it.

What Is the Child Tax Credit?

The Child Tax Credit (CTC) is a federal tax credit for taxpayers with qualifying children. Under current law the credit is up to $2,200 per qualifying child, and the amount is adjusted for inflation in future years. The rules have changed several times over the past few years, including the expanded version in 2021, so always confirm the current amount and requirements on the IRS website at irs.gov.

Who Is a Qualifying Child?

To claim the credit, a child generally must meet all of these tests:

Age. Under 17 at the end of the tax year.
Relationship. Your son, daughter, stepchild, foster child, sibling, step-sibling or a descendant of any of them, such as a grandchild or niece or nephew.
Support. The child did not provide more than half of their own support.
Dependent. You claim the child as a dependent on your return.
Residency. The child lived with you for more than half the year, with some exceptions for temporary absences and divorced parents.
Citizenship. The child must be a US citizen, national or resident alien.
Social Security number. The child needs a valid SSN issued before the due date of the return, and under current rules at least one parent must also have a valid SSN.

Children aged 17 and older, or other dependents, may qualify for a smaller Credit for Other Dependents.

Income Limits and Phase-Outs

The credit begins to phase out at higher incomes. It starts to shrink when modified adjusted gross income exceeds $200,000 for single filers and heads of household, or $400,000 for married couples filing jointly. The credit is reduced by $50 for each $1,000 of income above the threshold, so families with incomes far above those levels may receive little or none.

Refundable vs. Nonrefundable

The Child Tax Credit has a refundable portion known as the Additional Child Tax Credit. Part of the credit can be refunded to you if the credit exceeds your tax owed, up to a limit per child that is adjusted each year. To receive the refundable part, you generally must have earned income above a minimum threshold, and the refund is calculated as a percentage of earned income above that amount. This is why low-income families with earnings may still benefit.

Example

A married couple with two children under 17 and a combined income of $85,000 owes about $5,500 in federal income tax after deductions. With a $2,200 credit per child, they reduce their tax by $4,400 to about $1,100. If their tax were only $3,000, the nonrefundable portion would reduce it to zero and they might receive part of the remaining credit as a refund, subject to limits.

How to Claim the Credit

Gather information. You will need each child’s name, SSN and date of birth.
Check qualifying rules and whether you can claim the child as a dependent.
Use Schedule 8812 if you need to calculate the refundable portion. Tax software handles it automatically.
File your return, and e-file with direct deposit for fastest processing.

If you are filing for the first time, our guide to filing taxes for the first time walks through the process.

Divorced or Separated Parents

Generally, the custodial parent, meaning the parent with whom the child lived for more of the year, claims the child. The custodial parent can release the claim to the noncustodial parent by signing Form 8332. Only one parent can claim the child each year, and conflicting claims can trigger IRS review.

Related Credits and Benefits

Credit for Other Dependents. A smaller credit for dependents who do not qualify for the CTC.
Child and Dependent Care Credit. Helps pay for childcare while you work.
Earned Income Tax Credit. Can be larger for families with children.
Education credits. Help with college costs.
Dependent care flexible spending accounts, which reduce taxable income.
529 plans, which grow tax-advantaged for education savings.

You can combine many of these benefits. Also consider how to lower your taxable income, with ideas in how to reduce your taxable income.

Using Your Credit Wisely

Many families receive the credit as part of a refund. Consider using it for lasting goals, such as building an emergency fund (here’s how), paying down high-interest debt or investing for the future. If you want to start small, see how to start investing with little money.

Common Mistakes

Claiming a child who does not meet the tests.
Wrong or missing Social Security numbers.
Both parents claiming the same child.
Forgetting to update your W-4 to reflect credits.
Misreporting income, which can reduce the refundable portion.
Assuming the credit is permanent at one amount. Rules change.

Planning Ahead During the Year

Because the credit is claimed at tax time, many families adjust their withholding to receive some of the benefit through their paychecks. Use the IRS Tax Withholding Estimator, enter your children and expected credits and update your Form W-4 if needed. Doing so can raise your take-home pay during the year, while a smaller refund arrives later. Families who prefer a big refund as forced savings may leave their withholding alone.

Keep Documentation Handy

Save birth certificates, Social Security cards, school or medical records showing residency and records of childcare expenses. If the IRS questions your claim, these documents help you respond quickly. Also keep your own records of custody arrangements and any signed release forms for divorced or separated parents.

Frequently Asked Questions

Is the credit paid monthly?

Not under current law. It is claimed when you file your tax return, though you can adjust withholding to receive some of the benefit through paychecks.

Can I claim it if I owe no tax?

You may still receive part as a refund if you have enough earned income.

What if my child turns 17 this year?

The child must be under 17 at the end of the tax year, so a child who turns 17 during the year does not qualify for the full CTC.

Do I need to file a return to get it?

Yes. You must file a return, even if you are not otherwise required to file.

Bottom Line

The Child Tax Credit can reduce your tax bill by thousands of dollars. Check the qualifying child rules, confirm Social Security numbers, understand the refundable portion and verify current amounts each year.

Related guides

This article is for general education only and is not financial, tax, legal or insurance advice. Rates, limits and rules change, so confirm current details with the provider or a licensed professional before you decide.