The Additional Child Tax Credit is a refund you may receive if you have children and your tax bill is lower than the credit amount

The Additional Child Tax Credit (also called the Refundable Child Tax Credit) is money the IRS sends back to you, even if you owe no federal income tax. It works differently from the regular Child Tax Credit, which only reduces the tax you owe. If the regular credit is larger than your tax bill, the Additional Child Tax Credit lets you claim the leftover amount as a refund.

For the 2023 tax year, the regular Child Tax Credit is up to $2,000 per child under age 17. The Additional Child Tax Credit can refund up to $1,700 per child. This means if you have a $500 tax bill and a $2,000 credit available, you would owe zero tax and receive up to $1,500 back (the difference, capped at the refundable limit). The exact refund depends on your income and how many may have access to children you have.

You claim the Additional Child Tax Credit on Form 1040 (your main tax return) and Form 8812. You cannot claim it without filing a return, even if no one is required to file. The IRS processes this credit when it processes your entire return, which typically takes 21 days or longer if you file on paper.

Key Takeaways

  • The Additional Child Tax Credit refunds you money if your Child Tax Credit is larger than the tax you owe, up to $1,700 per may have access to child for 2023.
  • You must file Form 1040 and Form 8812 to claim it, even if your income is so low that you would not otherwise file a return.
  • Your income determines how much of the credit you can claim as a refund; the lower your earned income, the more you may receive back.
  • The credit is based on your earned income (wages, self-employment income) and does not include investment income or government benefits.

Who qualifies for the Additional Child Tax Credit

You can claim the Additional Child Tax Credit if you have at least $2,500 in earned income for the year and at least one may have access to child. Earned income means wages from a job, self-employment income, or taxable scholarship or fellowship grants. It does not include Social Security, unemployment benefits, child support, or investment income.

A may have access to child must be under age 17 at the end of the tax year, have a valid Social Security number, be your son, daughter, stepchild, foster child, or descendant of any of these, live with you for more than half the year, and be a U.S. citizen, national, or resident alien. The child cannot be a may have access to child of another person for tax purposes.

Your income also affects how much you can claim. For 2023, if your earned income is between $2,500 and roughly $28,000 (the exact amount varies by filing status), you calculate the refund as 15 percent of your earned income above $2,500, up to the $1,700 per-child cap. If your earned income exceeds that threshold, you can claim the full $1,700 per child (or the full amount of your unused credit, whichever is less).

How to calculate your Additional Child Tax Credit on Form 8812

Form 8812 walks you through the calculation step by step. You start by listing your may have access to children and their Social Security numbers. Then you enter your earned income from your W-2 forms, Schedule C (if self-employed), or other earned income sources.

The form then calculates 15 percent of your earned income minus $2,500. This number is compared to the amount of your regular Child Tax Credit that you could not use (because it exceeded your tax bill). Whichever is smaller becomes your Additional Child Tax Credit refund. The form caps this at $1,700 per child for 2023.

If you use tax software, it usually fills Form 8812 automatically once you enter your children's information and income. If you file by hand, you will need to do the arithmetic yourself or use the IRS worksheet included with the form instructions. The IRS publishes a new Form 8812 each year with updated income thresholds and credit limits.

The difference between the Child Tax Credit and the Additional Child Tax Credit

The regular Child Tax Credit reduces your tax bill dollar for dollar, up to $2,000 per child. If you owe $1,200 in federal income tax and have two children, the $4,000 credit would wipe out your tax bill and leave $2,800 unused.

The Additional Child Tax Credit lets you claim that unused $2,800 as a refund, but only up to $1,700 per child (so $3,400 maximum for two children). In this example, you would receive $2,800 back. If you had three children and $6,000 in credit but only $1,200 in tax, you could claim up to $5,100 in refund ($1,700 × 3 children), but your actual refund would be $5,000 (the unused credit, capped at the per-child limit).

Not all of the unused credit converts to a refund. The Additional Child Tax Credit is limited by your earned income. If you have $2,600 in earned income and $5,000 in unused credit, you can only claim 15 percent of ($2,600 − $2,500) = $15 as a refund, even though you have much more credit available. This is why income matters so much for this credit.

Common mistakes when claiming the Additional Child Tax Credit

The most frequent error is forgetting to file Form 8812 at all. Many people claim the regular Child Tax Credit on Form 1040 but never complete Form 8812, so they miss the refund entirely. If your credit is larger than your tax bill, you must file Form 8812 to get the refund.

Another mistake is including the wrong income on Form 8812. The form requires earned income only. If you enter total income (which includes interest, dividends, or Social Security), your calculation will be wrong and your refund will be too small. Check your W-2 forms and Schedule C to make sure you are using the right numbers.

A third common error is claiming a child who does not meet the age or relationship requirements. The child must be under 17 at the end of the tax year and must have lived with you for more than half the year. If you claim a child who turned 17 on December 31, or who lived with you for only eight months, you cannot claim the credit for that child.

Finally, some people claim the Additional Child Tax Credit without realizing they do not have enough earned income to may have access to. If you have no earned income or earned income below $2,500, you cannot claim this credit. The IRS will reject the credit and may delay your refund while it investigates.

How the Additional Child Tax Credit affects your refund timeline

If you claim the Additional Child Tax Credit, your return takes longer to process. The IRS flags returns with this credit for extra review because it is one of the most commonly claimed credits and also one of the most frequently claimed incorrectly. A return with the Additional Child Tax Credit typically takes 21 days or longer to process if you file electronically, and 4 to 6 weeks if you file on paper.

Filing electronically and using direct deposit speeds up the process. If you mail a paper return, add at least two weeks to the processing time for mail handling alone. The IRS publishes current processing times on its website, and you can check the status of your return using the "Where's My Refund?" tool on IRS.gov after 24 hours of filing electronically or four weeks after mailing a paper return.

If the IRS has questions about your claim, it will send you a letter asking for proof that your children meet the requirements (usually copies of birth certificates and proof of residence). Responding quickly to these letters prevents further delays. Keep copies of your tax return and supporting documents for at least three years.

Income limits and phase-out rules for the Additional Child Tax Credit

The Additional Child Tax Credit does not have an income phase-out the way some other credits do. You can claim it at any income level, as long as you have at least $2,500 in earned income and at least one may have access to child. However, the amount you can claim as a refund is limited by your earned income.

If your earned income is exactly $2,500, you can claim 15 percent of zero dollars, which means no refund. You need earned income above $2,500 to receive any refund. For every dollar of earned income above $2,500, you can claim 15 cents toward the Additional Child Tax Credit, up to the $1,700 per-child cap. Once your earned income reaches roughly $13,667, you can claim the full $1,700 per child (because 15 percent of $13,667 minus $2,500 equals $1,700).

This income calculation is separate from the income limits for the regular Child Tax Credit. The regular credit begins to phase out at higher income levels (around $400,000 for married couples filing jointly in 2023), but the Additional Child Tax Credit calculation is based only on the 15 percent formula tied to earned income.

Frequently Asked Questions

Can I claim the Additional Child Tax Credit if I did not work during the year?

No. You must have at least $2,500 in earned income to claim the Additional Child Tax Credit. Earned income includes wages, self-employment income, and taxable scholarships. It does not include Social Security, unemployment benefits, child support, or investment income. If you had no earned income, you cannot claim this credit.

What happens if I claim the Additional Child Tax Credit and the IRS says I was wrong?

The IRS will send you a letter explaining what it found. If you claimed a child who does not meet the requirements, you will owe back the refund plus interest. If you made a math error, the IRS will correct it and send you the right amount. You can respond to the letter with documentation (birth certificates, proof of residence) if you believe the IRS made a mistake.

Do I need to report the Additional Child Tax Credit refund as income next year?

No. A refund is not income. It is money you already paid in taxes or money the government is returning to you based on a credit you earned. You do not report it on your next year's tax return.

Can I claim the Additional Child Tax Credit for a foster child or grandchild?

Yes, if the child meets the requirements. The child must live with you for more than half the year, be under age 17, have a valid Social Security number, and be your son, daughter, stepchild, foster child, or descendant of any of these. A grandchild qualifies if you are the primary caregiver and the child lives with you for more than half the year.

If I file my taxes late, can I still claim the Additional Child Tax Credit?

Yes, but you must file within three years of the original due date to claim a refund. If you file more than three years late, the IRS will not refund the credit. File as soon as you can to avoid losing the refund entirely.