Written by Li Galo

The Child Tax Credit (CTC) can change your refund because it reduces your federal income tax for the year (even down to $0). In some cases, it may also generate (or increase) a refund if you qualify for the refundable Additional Child Tax Credit (ACTC). The ACTC is part of the CTC.

Let’s talk about:

• What the CTC and ACTC are
• The difference between the CTC and ACTC
• How CTC and ACTC affect your refund
• What the income phase out limits are for 2026

How the Child Tax Credit Works

For the 2026 tax year, the Child Tax Credit can reduce the federal income tax you owe by up to $2,200 for each qualifying child under age 17. You may also be able to receive a refund of up to $1,700 per child through the Additional Child Tax Credit.

A child usually qualifies if they:

• Are under age 17 on December 31, 2026.
• Are your child, stepchild, foster child, sibling, grandchild, niece, or nephew.
• Lived with you for more than half of 2026, with some exceptions.
• Did not pay for more than half of their own living expenses.
• Are claimed as your dependent.
• Have a valid Social Security number.
• Are a U.S. citizen, U.S. national, or resident alien.
• Have a parent or taxpayer claiming the credit who also has a valid Social Security number.

Your refund amount depends on “taxes paid” vs “taxes owed”

A refund happens when your total payments during the year (like paycheck withholdings) are more than your final tax bill on your return. When the CTC lowers your tax bill, the gap between what you paid and what you owe can grow, turning into a bigger refund for some.

Child Tax Credit vs Additional Child Tax Credit

The CTC itself is nonrefundable, meaning it can reduce your tax down to zero.

If the CTC amount is more than your tax liability, you may be eligible for the refundable Additional Child Tax Credit, subject to eligibility rules and limits.

Why some taxpayers get a bigger refund than others

Two taxpayers can both have qualifying children and claim the Child Tax Credit, but their refund outcomes can differ because of:

• How much federal tax you owe (before credits): If you have little to no tax liability, ACTC becomes more relevant.
• Whether you meet the ACTC rules: ACTC eligibility is not automatic for everyone, particularly those without qualifying children.
• Your income: CTC can be reduced for higher-income taxpayers (phaseout), which can limit the total benefit. See the chart below for phase out amounts.

The CTC has a gradual phase out. The credit begins to decrease if your modified adjusted gross income is more than:

• $200,000 for single taxpayers, heads of household, and most other taxpayers.
• $400,000 for married couples filing jointly.

The credit usually decreases by $50 for every $1,000 your income is above the limit.

Here are the 2026 income phase outs per filing status:

Filing Status	Phase-Out Starts At	Phase-Out Rate
Single or Head of Household	$200,000 AGI	$50 per $1,000 over
Married Filing Jointly	$400,000 AGI	$50 per $1,000 over

Source: IRC §24(b). The new GOP tax bill allows an adjustment for inflation in future years.

The minimum earnings required is an income of $2,500 to be eligible for ACTC.

For example, if you owe $3,000 in federal taxes and qualify for the full $2,200 credit, your tax bill could drop to $800. If your credit is worth more than the taxes you owe, you may qualify for a refund through the Additional Child Tax Credit.

🚨In 2025, an announcement was made that there were $2.4 billion in unclaimed tax credits.

– Source: Internal Revenue Service

How the Child Tax Credit affects your refund

It reduces your tax first.

The credit offsets your tax liability. If it reduces your tax to $0, you could see more refund impact than someone whose tax bill is still higher than the credit.

Your income can change the credit amount.

If your income is above the phase out thresholds, the credit may shrink, which usually means a smaller refund effect.

What you have withheld matters.

Two families with the same W-2 income can claim the same credit amount, but the family that withheld more from their paycheck throughout the year often gets a larger refund (because their starting point – the tax they already paid – was higher).

Common reasons the refund is less than expected

• The child doesn’t meet all qualifying criteria (age/residency/dependent rules).
• SSN issues (invalid/missing/mistyped SSN/ITIN rules as applicable).
• The credit is reduced by income phaseout rules.
• The taxpayer had tax liability reduced to zero but didn’t qualify for the refundable ACTC portion.

Next step checklist for readers

• Confirm each child is a qualifying child.
• Make sure the return entries for dependents are correct.
• Review the CTC/ACTC results summary in your tax software if self-filing.
• If the refund seems off, check whether the ACTC portion should apply.
• Consider checking your W-4 at work. If you receive a large refund each year and want to change it, consult with your payroll accountant to edit your W-4 to get less withheld per paycheck (more take-home pay).

FAQs

What if I have no tax liability?

Your refund impact may be different because the credit’s effect depends on whether any portion can be refundable in your situation.

What if my child is too old for CTC in 2026?

If your child turned 18 in 2026, they won’t qualify for CTC but they do qualify for the $500 credit known as Other Dependent Credit or ODC. It has the same income phase out ($200k/$400k). The ODC is nonrefundable and can apply to an adult dependent, including an aging parent. Children with an ITIN can qualify for the ODC but not the CTC/ACTC.

When will I receive my tax refund if I claim the CTC/ACTC/ODC?

If you claimed the CTC/ACTC/ODC, the IRS states that they do not issue refunds until mid-February or March, provided that you filed the tax return a few weeks before the IRS begins issuing those refunds.

Ready to see exactly how the CTC and the refundable ACTC may affect your 2026 refund?

Don’t guess. Let’s make sure your credit is calculated correctly from the start.

Schedule a quick video call with your tax advisor to:

• Confirm each child meets the qualifying rules,
• Verify the SSN/ITIN details that can change whether the credit is allowed,
• Check whether any portion of your benefit is refundable (ACTC) versus only reducing  tax owed, and
• Identify any phaseout or withholding factors that could affect your refund amount.

Be sure to have your 2026 dependent details on hand (and upload the required prior-year tax return to your file 24 hours before our meeting so we can see if any credits were missed). We’ll help you maximize the credit you’re eligible for, without surprises when you file.

Tax Disclaimer: This article is provided for general educational and informational purposes only. This content is not intended to provide tax, legal, accounting, financial, or investment advice, and it should not be relied upon as a substitute for advice from a qualified tax professional. Tax laws, regulations, deductions, credits, and filing requirements change frequently and apply differently depending on an individual’s specific circumstances, income, location, and filing status. Readers should consult a qualified tax advisor, accountant, or attorney before making tax-related decisions. No advisor-client relationship is created by reading or relying on this article.