The Child Tax Credit Reduces Your Tax Bill by Up to $2,000 Per Child

The Child Tax Credit is a tax deduction that lowers the amount of federal income tax you owe. For each child under 17 who meets the requirements, you can reduce your tax bill by up to $2,000. This is money that comes off what you owe the IRS, not a refund you receive — though in some cases you may get money back if the credit is larger than your tax bill.

The credit applies to children who are your biological children, stepchildren, adopted children, or foster children. They must live with you for more than half the year, be claimed as your dependent, be a U.S. citizen or resident alien, and have a valid Social Security number. The child must also be under 17 at the end of the tax year.

You claim the Child Tax Credit on your federal tax return using Form 1040 and Schedule 8812. The amount you receive depends on your income level — the credit begins to shrink if your income exceeds a certain threshold, which changes each year.

Key Takeaways

  • The Child Tax Credit reduces your federal tax bill by up to $2,000 per child under 17 who lives with you and meets IRS requirements.
  • Your child must have a valid Social Security number, be a U.S. citizen or resident alien, and be claimed as your dependent on your return.
  • The credit phases out for higher earners — if your income exceeds a certain level, the amount you can claim decreases.
  • You claim the credit on your tax return using Form 1040 and Schedule 8812, not by filing a separate form with the IRS.

Income Limits That Reduce Your Credit Amount

The full $2,000 credit is available only if your income falls below a threshold. For the 2023 tax year, that threshold is $400,000 for married couples filing jointly and $200,000 for single filers. If your income exceeds these amounts, your credit decreases by $50 for every $1,000 (or fraction of $1,000) over the limit.

This means if you earn $401,000 as a married couple filing jointly, your credit shrinks by $50 per child. At $402,000, it shrinks by another $50, and so on. The income thresholds change each year based on inflation, so check the IRS website or your tax software for the current year's limits.

Your income for this purpose is your modified adjusted gross income (MAGI), which is usually the same as your adjusted gross income (AGI) shown on your tax return. If you are unsure whether you are over the limit, your tax software will calculate this automatically.

How the Credit Works If You Owe No Taxes

If your tax bill is zero or very small, you may still receive money back through the Additional Child Tax Credit (also called the refundable portion). This allows you to claim up to $1,700 per child as a refund, even if you owe no federal income tax.

To claim the refundable portion, you must have earned income during the year — income from a job, self-employment, or certain other sources. If you earned less than $2,500, you cannot claim the refundable credit. The amount of refund you receive is the smaller of $1,700 per child or 15 percent of your earned income above $2,500.

For example, if you earned $5,000 and have one child, your refundable credit would be 15 percent of $2,500 (the amount above $2,500), which equals $375. You would receive that $375 as a refund, even though you owed no tax.

Dependent Requirements and Documentation

Your child must be claimed as a dependent on your tax return to may have access to for the credit. This means you provide more than half of their financial support for the year — food, housing, clothing, education, and medical care all count. If someone else provides more than half the support, you cannot claim the credit for that child.

You will need your child's Social Security number to claim the credit. If your child does not have one, you can request one from the Social Security Administration before filing your return. The IRS will reject your return if the Social Security number is missing or incorrect.

If you are divorced or separated, only the parent with custody for the majority of the year can claim the credit, unless you have a written agreement that transfers the right to the other parent. Keep documentation showing where your child lived and who paid for their support, in case the IRS asks questions later.

Claiming the Credit on Your Tax Return

You claim the Child Tax Credit directly on Form 1040 (the main federal tax form) in the section labeled "Credits." You will list each child's name and Social Security number. If you are claiming the refundable portion (Additional Child Tax Credit), you also complete Schedule 8812 and attach it to your return.

Most tax software walks you through the questions needed to claim the credit automatically. If you are filing by hand, the Form 1040 instructions explain which lines to use. The IRS website also has a worksheet you can use to calculate the credit yourself if your income is above the phase-out threshold.

You do not file a separate form or contact the IRS to claim the credit — it is part of your regular tax return. File your return as you normally would, and the credit will reduce the tax you owe or increase any refund you are due.

What Happens If Your Income Changes Mid-Year

If you earned more income than expected during the year, your credit may be reduced or eliminated. You calculate the credit based on your actual income for the full tax year, not what you estimated when you filed. If you claimed too much credit during the year through advance payments, you may owe money back when you file your return.

If your income dropped unexpectedly — due to job loss, reduced hours, or other circumstances — you may be due a larger credit than you claimed. In that case, filing your return will result in a larger refund. There is no penalty for claiming less credit than you are due; you straightforward receive less money back.

Keep records of your income throughout the year so you know what to expect when you file. If you think your income will be significantly different from what you estimated, you can adjust your withholding or estimated tax payments to avoid a large bill or refund at tax time.

Frequently Asked Questions

Can I claim the Child Tax Credit for a child who does not live with me full-time?

No. Your child must live with you for more than half the year. If your child lives with you for exactly six months, you can claim the credit. If they live with you for less than six months, you cannot, even if you provide all their financial support. Temporary absences for school, vacation, or medical treatment do not count against the time requirement.

What if my child turns 17 during the tax year?

You can claim the credit for the year your child turns 17, as long as they are under 17 at the end of that tax year. For example, if your child turns 17 on December 31, you can claim the full credit for that year. If they turn 17 on January 1, you cannot claim the credit for that year.

Do I need to report the Child Tax Credit to anyone besides the IRS?

No. You claim the credit only on your federal tax return. Some states offer their own child tax credits, but those are separate and claimed on your state return. The IRS does not send you a separate notice about the credit — it is straightforward part of your tax calculation.

Can two parents both claim the Child Tax Credit for the same child?

No. Only one person can claim the credit per child per year. If you are divorced or separated, you must decide which parent will claim the credit, or you can have a written agreement that alternates the credit between years. If both parents try to claim the same child, the IRS will disallow one of the claims and may assess a penalty.

What if I do not file a tax return — can I still get the refundable portion of the credit?

You must file a tax return to claim any part of the Child Tax Credit, including the refundable portion. If you earned income but did not file, you can file a return for prior years to claim credits you missed. The IRS generally allows you to go back three years to claim a refund.