Who Can Claim the Child Tax Credit

The Child Tax Credit is a tax reduction you may receive if you have dependent children under age 17. The IRS does not hand out money before you file — instead, the credit reduces the taxes you owe when you file your return, or increases your refund if the credit is larger than your tax bill.

To claim the credit, you must be the child's parent, stepparent, foster parent, or legal guardian. The child must live with you for more than half the year, be a U.S. citizen, national, or resident alien, and have a valid Social Security number. You also cannot be claimed as a dependent on someone else's return.

Your income matters. For the 2024 tax year, the credit begins to reduce if your income exceeds $400,000 (married filing jointly) or $200,000 (single or head of household). The credit amount itself depends on the child's age and your income level.

Key Takeaways

  • The Child Tax Credit reduces your tax bill by up to $2,000 per child under age 17, but the exact amount depends on your income and filing status.
  • Your child must have a valid Social Security number, live with you for more than half the year, and be claimed only on your return — not on anyone else's.
  • You report the credit on Schedule 8812 (Form 1040) when you file your tax return; you do not need to file a separate form to request it.
  • If you received advance payments of the credit in 2024, you will reconcile those payments when you file, which may reduce your refund or increase what you owe.

Income Limits and Credit Amounts

The credit is worth up to $2,000 per may have access to child for the 2024 tax year. However, the amount you actually receive depends on your modified adjusted gross income (MAGI). If your MAGI is below the threshold for your filing status, you receive the full $2,000 per child. Once you cross the threshold, the credit reduces by $50 for each $1,000 (or fraction thereof) of income above the limit.

For 2024, the income thresholds are $400,000 for married couples filing jointly and $200,000 for single filers, heads of household, and married couples filing separately. These thresholds do not change year to year as often as other tax rules, but you should verify the current year's limit when you file.

If your income is very high, the credit may reduce to zero. In that case, you cannot claim it. However, you may still be able to claim the Credit for Other Dependents, which is worth $500 per dependent and has different income rules.

What Documents You Need to Gather

Before you file, collect your child's Social Security number and birth date. You will enter both on your tax return. If your child does not have a Social Security number, you can request one from the Social Security Administration — the process takes a few weeks, so explore early if you have not done so.

You also need proof that the child lived with you for more than half the year. Keep records like school enrollment documents, medical records, or lease agreements that show the child's address and your address. The IRS rarely asks for these documents unless your return is audited, but having them ready protects you if questions arise.

If you are divorced or separated and share custody, only one parent can claim the child on their return each year. If you and the other parent cannot agree, the parent with whom the child lived for the longer part of the year generally has the right to claim the credit. You may also sign a form allowing the other parent to claim the child instead — Form 8332 is used for this purpose.

How to Report the Credit on Your Tax Return

When you file your federal tax return (Form 1040), you will report the Child Tax Credit on Schedule 8812. If you use tax software, the program will ask you questions about your children and calculate the credit for you automatically. If you file by hand, you fill in the child's name, Social Security number, and relationship to you, then follow the worksheet in the Schedule 8812 instructions to calculate the credit amount.

Enter the final credit amount on line 24 of Form 1040. This reduces your total tax liability. If the credit is larger than the tax you owe, the excess may be refundable — meaning the IRS sends you the difference as part of your refund — but only up to the Additional Child Tax Credit limit, which is $1,700 per child for 2024.

If you received advance Child Tax Credit payments in 2024 (monthly payments sent to your bank account or mailed to you), you will also complete Part IV of Schedule 8812 to reconcile those payments. This step compares what you received in advance to what you actually may have access to for based on your final income and family situation. If you received more than you may have access to for, the difference reduces your refund or increases what you owe.

Advance Payments and Reconciliation

In some years, the IRS sends advance payments of the Child Tax Credit directly to families before they file their tax return. These payments are based on your prior year's tax return and an estimate of your current year income. If your 2024 income was lower than expected, you may have received more in advance payments than you actually may have access to for, which means you will owe some of it back when you file.

Conversely, if your income was lower than the IRS estimated, you may may have access to for more credit than you received in advance. In that case, you will receive the additional amount as part of your refund. The reconciliation happens automatically when you file — you do not need to contact the IRS separately.

If you did not receive advance payments but think you should have, or if your income changed significantly during the year, you can update your information with the IRS using the Child Tax Credit Update Portal on IRS.gov. This tool lets you report income changes, new children, or address changes so the IRS can adjust future payments or your final return.

Common Mistakes That Delay Your Refund

The most frequent error is entering the child's Social Security number incorrectly. Even one wrong digit will cause the IRS to reject the credit. Double-check the number before you file, and make sure it matches the name you entered — the IRS cross-checks these details.

Another common mistake is claiming the same child on two returns. If you and the other parent both claim the child, the IRS will disallow the credit on one return and may audit both of you. Only one person can claim each child per tax year. If you share custody and cannot agree, the IRS will award the credit to the parent with the higher adjusted gross income unless a custody agreement or court order says otherwise.

Entering the wrong relationship to the child can also cause problems. The IRS expects you to enter "son," "daughter," "stepson," "stepdaughter," "foster child," or "ward." If you enter something unclear, the IRS may request clarification before processing your return.

What Happens If Your Return Is Audited

If the IRS questions your Child Tax Credit claim, they will ask you to prove the child's age, residency, and relationship to you. Provide copies of the child's birth certificate, school records showing the child's address, and any custody documents if applicable. The IRS may also ask for proof that the child is a U.S. citizen or resident alien — a passport, birth certificate, or Social Security card works.

If you cannot provide proof that the child lived with you for more than half the year, the IRS will disallow the credit and may assess penalties and interest on the unpaid tax. Keep your supporting documents for at least three years after you file, since that is the standard audit window.

Frequently Asked Questions

Can I claim the Child Tax Credit if my child does not have a Social Security number yet?

No. Your child must have a valid Social Security number to claim the credit. If your child was born late in the year and does not have a number yet, you can request one from the Social Security Administration. The process usually takes two to four weeks. Once you receive the number, you can file an amended return (Form 1040-X) to claim the credit for that year.

What if I share custody and the other parent claims the child first?

If both of you claim the same child, the IRS will typically disallow the credit on the return filed second. You can then file an amended return (Form 1040-X) to remove the child and reclaim the credit if you have the legal right to do so. If you and the other parent disagree about who should claim the child, a custody agreement or court order determines who has the right. If neither exists, the parent with whom the child lived for the longer part of the year has priority.

Do I lose the credit if my income is too high?

The credit does not disappear entirely, but it reduces as your income rises above the threshold. For every $1,000 of income over the limit, the credit decreases by $50. If your income is very high, the credit may reduce to zero. At that point, you cannot claim the Child Tax Credit, but you may be able to claim the Credit for Other Dependents instead, which is worth $500 per dependent and has different income limits.

What is the difference between the Child Tax Credit and the Additional Child Tax Credit?

The Child Tax Credit is the main credit, worth up to $2,000 per child. The Additional Child Tax Credit is the refundable portion — the part that can come back to you as a refund even if you owe no tax. For 2024, up to $1,700 of the $2,000 credit per child is refundable. This means if you owe $500 in tax but may have access to for a $2,000 credit, you will receive a $1,500 refund (the $500 credit applied to your tax, plus $1,000 of the refundable portion).

If I received advance payments, do I have to pay them back if my income increased?

Yes, if your income rose during the year and you received more in advance payments than you now may have access to for, you will owe the difference back. The reconciliation happens when you file your return — the IRS calculates how much you actually may have access to for based on your final income, compares it to what you received, and adjusts your refund or tax bill accordingly. There are no penalties for this; it is a normal part of the process.