The Child Tax Credit in 2026: What You Need to Know

The Child Tax Credit is a reduction in the federal income taxes you owe, based on how many children under 17 live with you. The amount you can claim depends on your income, your filing status, and the number of children in your household. For 2026, the credit amount and income limits will be different from 2025 because tax law changes expire at the end of 2025 unless Congress extends them.

Right now, the credit is $2,000 per child under 17. Starting in 2026, that amount is set to drop to $1,000 per child unless Congress passes new legislation before the end of 2025. The income thresholds that determine whether you can claim the full amount or a reduced amount will also change. This guide explains how the credit works, what income limits explore, and what documents you need when you file your 2026 taxes.

Key Takeaways

  • The Child Tax Credit reduces your federal income tax dollar-for-dollar, with the amount per child set to change in 2026 depending on whether Congress extends current law.
  • The credit begins to reduce if your income exceeds a threshold that depends on your filing status — $400,000 for married filing jointly, $200,000 for single filers.
  • You must have a valid Social Security number for each child you claim, and the child must live with you for more than half the year.
  • The credit is "refundable" up to a limit, meaning you can receive money back even if you owe no tax, though the refundable portion is smaller than the full credit.
  • You claim the credit on your federal tax return when you file, not through a separate process or government program.

How Much the Credit Is Worth

For the 2025 tax year (filed in early 2026), the credit is $2,000 per child under 17. This amount is subtracted directly from the federal income tax you owe. If you owe $3,000 in tax and have two children, the $4,000 credit would reduce your tax to zero and leave you with a $1,000 refund — assuming you meet all other requirements.

Starting with the 2026 tax year (filed in early 2027), the credit is scheduled to drop to $1,000 per child unless Congress extends the higher amount. This change happens automatically because the law that set the $2,000 amount expires at the end of 2025. Congress could pass new legislation to keep the $2,000 amount, but as of now, no such extension has been signed into law.

The credit also includes a small amount for other dependents — people who live with you and depend on you for support but do not meet the age requirement for the child credit. That amount is $500 per dependent and does not change as often.

Income Limits and How They Affect Your Credit

The full credit is available only if your income is below a certain threshold. Once your income exceeds that threshold, the credit begins to shrink by $50 for every $1,000 (or fraction of $1,000) your income goes over the limit.

For 2025 taxes, the thresholds are $400,000 for married couples filing jointly, $200,000 for single filers, and $200,000 for heads of household. These thresholds are adjusted each year for inflation, so the 2026 thresholds will be slightly higher. If you earn $210,000 as a single filer, your credit would be reduced because you are $10,000 over the $200,000 limit.

The reduction is calculated in $1,000 increments, meaning even $1 over a $1,000 mark triggers the full $50 reduction. This can make a significant difference if your income is close to the threshold. You can find the exact 2026 thresholds on the IRS website when tax forms are released in late 2026.

Who Can Claim the Credit

To claim the Child Tax Credit, the child must be your son, daughter, stepchild, foster child, sibling, or descendant of any of these (such as a grandchild or niece). The child must be under 17 at the end of the tax year, live with you for more than half the year, and be a U.S. citizen, national, or resident alien with a valid Social Security number.

You must also be the child's parent, stepparent, or legal guardian. If two people could claim the same child — for example, after a divorce — only one person can claim the credit for that child in a given year. The person with the higher income usually has the right to claim the child, but parents can agree to let the other parent claim the child instead.

The child does not have to live with you the entire year, but the time must add up to more than half the year. If a child lives with you from January through August and then moves to their other parent's house, that counts. If a child is born or adopted during the year, they count for the full credit as long as they live with you for the rest of the year.

Refundable vs. Non-Refundable Portions

Part of the Child Tax Credit is refundable, which means you can receive money back even if you owe no federal income tax. The refundable portion is called the Additional Child Tax Credit or Refundable Child Tax Credit. For 2025, up to $1,700 of the $2,000 credit per child is refundable.

The non-refundable portion — the part that can only reduce your tax to zero but cannot create a refund — is $300 per child for 2025. If you have no tax liability, you can still receive up to $1,700 per child as a refund, but not the full $2,000.

The refundable amount is also scheduled to drop in 2026 if the credit itself drops to $1,000. The exact refundable portion for 2026 will depend on what Congress does before the end of 2025. If the credit stays at $2,000, the refundable amount will likely remain at $1,700 or be adjusted for inflation.

What Documents You Need

When you file your 2026 tax return, you will need the Social Security number for each child you claim. You do not need to send documents to the IRS with your return, but you must have them available if the IRS asks. Keep copies of birth certificates, adoption papers, or court documents that prove the child's relationship to you and their age.

If the child's other parent also lives in the household, you will need to decide who claims the child. If you are divorced or separated, you may have a custody agreement that specifies who claims the child for tax purposes. If you do not have a written agreement, the parent with primary custody usually has the right to claim the child.

You will also need your own Social Security number or Individual Taxpayer Identification Number (ITIN) and your filing status. If you file jointly with a spouse, both of you will need Social Security numbers or ITINs.

How to Claim the Credit on Your Tax Return

You claim the Child Tax Credit on your federal income tax return using Form 1040 and Schedule 8812 (if you are claiming the refundable portion). If you use tax software or hire a tax preparer, they will ask you questions about your children and calculate the credit for you automatically.

When you file, you will enter each child's name, Social Security number, relationship to you, and the number of months they lived with you during the year. The software or preparer will then calculate how much credit you can claim based on your income and filing status.

If you file electronically, the IRS processes your return faster and deposits refunds directly to your bank account if you are owed money. If you file on paper, processing takes longer. Either way, you claim the credit on the same return where you report your income and other deductions.

What Changes in 2026

The biggest change for 2026 is the potential drop in the credit amount from $2,000 to $1,000 per child. This happens automatically unless Congress passes legislation to extend the higher amount. Congress has extended this credit before, but there is no may provide it will do so again.

The income thresholds will also shift slightly upward due to inflation adjustment, meaning you can earn a bit more before the credit begins to shrink. The exact new thresholds will be published by the IRS in late 2026 when tax forms are released.

If you have children who will turn 17 in 2026, they will no longer be may be able to access for the Child Tax Credit starting that year. However, they may be may be able to access for the $500 credit for other dependents if they still live with you and meet the other requirements.

Frequently Asked Questions

Can I claim the credit if my child has a different last name than mine?

Yes, as long as you can prove the child is your biological child, stepchild, foster child, or adopted child. The child's last name does not matter. You will need the child's birth certificate or adoption papers to show the relationship if the IRS asks.

What happens if I claim a child and the other parent also claims the same child?

The IRS will contact both of you and ask for proof of who has the right to claim the child. Only one person can claim the credit for each child in a given year. If you cannot agree, the IRS will usually award the credit to the parent with primary custody. You may have to amend your return.

Do I lose the credit if my income is slightly over the limit?

No, you do not lose it completely. The credit reduces by $50 for every $1,000 your income exceeds the threshold. If you are $1,000 over the limit, your credit shrinks by $50 per child. If you are $10,000 over, it shrinks by $500 per child. You keep whatever credit remains.

Can I claim the credit if my child does not have a Social Security number?

No. Each child must have a valid Social Security number to be claimed for the Child Tax Credit. If your child was born in the United States, you can explore for a Social Security number through the Social Security Administration. If your child is not a U.S. citizen, they must be a resident alien with an ITIN to be claimed.

Will I get the full refund if I owe no tax?

You will get the refundable portion of the credit, which is up to $1,700 per child for 2025. The non-refundable portion ($300 per child) can only reduce your tax to zero. If you owe no tax, you cannot use the non-refundable part, but you can still receive the refundable part as a refund.