Additional Child Tax Credit: 2026 Guide

A complete guide to the refundable portion of the Child Tax Credit, including eligibility, calculation, phase-out rules, and how to claim the Additional Child Tax Credit in 2026.

What Is the Additional Child Tax Credit?

The Additional Child Tax Credit (ACTC) is the refundable portion of the Child Tax Credit (CTC). While the regular Child Tax Credit is non-refundable and can only reduce your tax liability to zero, the Additional Child Tax Credit allows eligible taxpayers to receive a refund for any unused portion of the credit. For 2026, the maximum Child Tax Credit is $2,000 per qualifying child, and up to $1,700 of that amount is refundable through the ACTC. The refundable amount is adjusted annually for inflation, so the exact figure may vary slightly from year to year.

The ACTC was created to provide additional financial support to lower-income families who may not have sufficient tax liability to fully benefit from the non-refundable Child Tax Credit. Without the ACTC, families with little or no tax liability would receive little or no benefit from the Child Tax Credit, even though they may be paying significant amounts in payroll taxes. The ACTC ensures that these families receive the full benefit of the credit, providing a meaningful source of income that can help cover the costs of raising children.

Eligibility Requirements for 2026

To qualify for the Additional Child Tax Credit in 2026, you must first meet the eligibility requirements for the regular Child Tax Credit. These requirements include having a qualifying child who is under the age of 17 at the end of the tax year, who is your son, daughter, stepchild, foster child, brother, sister, or a descendant of any of these, and who lived with you for more than half of the year. The child must also have a valid Social Security number and must not have provided more than half of their own support during the year. Additionally, you must claim the child as a dependent on your tax return.

Beyond the basic Child Tax Credit eligibility requirements, the Additional Child Tax Credit has its own specific rules. To claim the ACTC, you must have earned income of at least $2,500 for the tax year. Earned income includes wages, salaries, tips, net self-employment income, and certain other types of income. If your earned income is below $2,500, you are not eligible for the ACTC, even if you qualify for the regular Child Tax Credit. The $2,500 threshold is not adjusted for inflation, so it remains the same from year to year unless changed by Congress.

How to Calculate the Additional Child Tax Credit

The calculation of the Additional Child Tax Credit involves several steps. First, you determine the amount of your regular Child Tax Credit, which is $2,000 per qualifying child. Second, you calculate your tax liability before credits. If your tax liability is equal to or greater than the Child Tax Credit, you can use the full credit to reduce your tax liability, but you are not eligible for the ACTC. If your tax liability is less than the Child Tax Credit, the difference between the credit and your tax liability is the maximum amount that could be refundable through the ACTC.

However, the actual ACTC amount is subject to a separate calculation based on your earned income. For 2026, the ACTC is equal to 15 percent of your earned income above $2,500, up to a maximum of $1,700 per qualifying child. For example, if you have one qualifying child and earned income of $10,000, your ACTC would be 15 percent of $7,500 ($10,000 minus $2,500), which equals $1,125. If your earned income is $13,833 or more, you would reach the maximum ACTC of $1,700 for one child. For two or more qualifying children, the maximum ACTC is $1,700 per child, but the earned income calculation remains the same.

Phase-Out Rules for the Additional Child Tax Credit

The Additional Child Tax Credit, like the regular Child Tax Credit, is subject to phase-out rules based on your modified adjusted gross income (MAGI). For 2026, the phase-out begins at $200,000 for single filers and heads of household, and $400,000 for married couples filing jointly. For every $1,000 of MAGI above the threshold, the total Child Tax Credit (including both the non-refundable and refundable portions) is reduced by $50. This means that the ACTC is also reduced as income increases, though the phase-out applies to the combined credit rather than to the ACTC separately.

It is important to note that the phase-out rules apply to the total Child Tax Credit, not just the non-refundable portion. This means that higher-income taxpayers may see their ACTC reduced even though they have sufficient tax liability to absorb the non-refundable portion of the credit. For example, a married couple with two qualifying children and MAGI of $410,000 would have their total Child Tax Credit reduced by $500 ($10,000 above the threshold divided by $1,000, multiplied by $50), reducing their total credit from $4,000 to $3,500. If their tax liability is $3,000, their ACTC would be $500 rather than the full $1,700 per child they would receive at lower income levels.

How to Claim the Additional Child Tax Credit

To claim the Additional Child Tax Credit, you must complete Schedule 8812, Qualifying Children and Other Dependents, and attach it to your Form 1040 or Form 1040-SR. Schedule 8812 walks you through the calculation of both the regular Child Tax Credit and the Additional Child Tax Credit, including the earned income calculation and the phase-out rules. The form requires you to provide information about each qualifying child, including their name, Social Security number, and relationship to you, as well as your earned income and tax liability.

Part I of Schedule 8812 is used to calculate the total Child Tax Credit, while Part II is used to determine the refundable Additional Child Tax Credit. The form will guide you through the earned income calculation, the phase-out rules, and the final determination of the ACTC amount. The refundable amount is then carried to your Form 1040, where it is added to your refund or subtracted from your tax liability. Taxpayers who are unsure about how to complete Schedule 8812 should consider using tax preparation software or consulting a tax professional to ensure accurate calculation of the credit.

Interaction with Other Tax Credits

The Additional Child Tax Credit interacts with other tax credits in ways that can affect your overall tax situation. For example, the Earned Income Tax Credit (EITC) and the ACTC are both refundable credits that can increase your refund, but they are calculated independently. You can claim both credits on the same return if you meet the eligibility requirements for each. However, the EITC is based on your earned income and family size, while the ACTC is based on your earned income and the number of qualifying children, so the two credits may benefit different types of taxpayers.

The ACTC also interacts with the Child and Dependent Care Credit, which provides a credit for expenses related to the care of a qualifying child or dependent. While the Child and Dependent Care Credit is non-refundable, it can reduce your tax liability, which in turn affects the amount of ACTC you are eligible for. For example, if you have $2,000 in tax liability and claim $1,000 in Child and Dependent Care Credit, your remaining tax liability is $1,000, which reduces the amount of ACTC you can receive. Taxpayers should carefully consider the order in which they claim credits to maximize their total tax benefit.

Common Mistakes to Avoid

One of the most common mistakes taxpayers make with the Additional Child Tax Credit is failing to claim it at all. Many taxpayers who are eligible for the ACTC do not realize that they can receive a refund for the unused portion of the Child Tax Credit, especially if they have little or no tax liability. Another frequent error is miscalculating the earned income threshold. Taxpayers must have at least $2,500 in earned income to qualify for the ACTC, and failing to meet this threshold can result in denial of the credit. Additionally, some taxpayers incorrectly include unearned income, such as investment income or Social Security benefits, in their earned income calculation, which can lead to an overstated ACTC.

Other mistakes include failing to report changes in income or family size, not keeping adequate records of earned income, and not claiming all qualifying children. Taxpayers who experience a life event such as the birth of a child, a change in employment, or a divorce should update their tax information as soon as possible to ensure they receive the correct amount of the ACTC. Finally, some taxpayers overlook the phase-out rules and are surprised when their ACTC is reduced or eliminated due to high income. Understanding the phase-out thresholds and planning accordingly can help taxpayers maximize their credit.

Impact on Tax Refunds

The Additional Child Tax Credit can have a significant impact on your tax refund, particularly for lower-income families. For 2026, a family with two qualifying children and sufficient earned income could receive up to $3,400 in refundable credits through the ACTC, in addition to any other refundable credits they may be eligible for, such as the Earned Income Tax Credit. This can result in a substantial refund that can help families cover expenses, pay down debt, or build savings. The ACTC is particularly valuable for families who have little or no federal income tax liability, as it provides a source of income that they would not otherwise receive.

It is important to note that the ACTC is included in your total refund, which means it can be offset by certain debts, such as unpaid child support, student loans, or state tax obligations. The Treasury Offset Program allows the IRS to reduce your refund to satisfy these debts, and the ACTC is not exempt from this process. Taxpayers who are concerned about offsets should contact the agency that is claiming the debt to explore options for resolving the debt or reducing the offset. Additionally, taxpayers who file a joint return and are concerned about their spouse's debts may be eligible to claim injured spouse allocation on Form 8379 to protect their share of the refund.

Future of the Additional Child Tax Credit

The future of the Additional Child Tax Credit depends on legislative action by Congress. The enhanced Child Tax Credit and ACTC provisions that were enacted as part of the American Rescue Plan Act of 2021, which temporarily increased the maximum credit to $3,600 per child under 6 and $3,000 per child ages 6 to 17, and made the credit fully refundable, expired at the end of 2021. For 2026, the credit has reverted to its pre-2021 levels of $2,000 per child with a maximum refundable amount of $1,700. There have been ongoing discussions about permanently enhancing the Child Tax Credit and ACTC, but no legislation has been enacted as of now.

Looking ahead to 2027, any changes to the ACTC would depend on congressional action, and at this time the 2027 parameters are only projected and not yet finalized. Taxpayers who rely on the ACTC should stay informed about legislative developments and consider how potential changes could affect their tax situation. Advocacy groups and policymakers continue to debate the merits of expanding the ACTC, and there is always the possibility of future legislation that could increase the refundable amount or change the eligibility requirements. Staying informed and planning ahead can help families maximize their tax benefits.

ACTC and Self-Employment Income

Self-employment income is included in the earned income calculation for the Additional Child Tax Credit, which can be beneficial for taxpayers who have both self-employment income and wages. For 2026, self-employment income is calculated as net earnings from self-employment, which is gross income from self-employment minus allowable business expenses. Taxpayers who have both self-employment income and wages can combine both sources to meet the $2,500 earned income threshold and to calculate the 15 percent of earned income above $2,500 that determines the ACTC amount.

However, self-employment income is also subject to self-employment tax, which includes Social Security and Medicare taxes. For 2026, the Social Security tax rate is 12.4 percent on net self-employment income up to the Social Security wage base of $184,500, and the Medicare tax rate is 2.9 percent on all net self-employment income. High-income taxpayers may also be subject to the Additional Medicare Tax of 0.9 percent on net self-employment income above $200,000 for single filers and $250,000 for married couples filing jointly. Taxpayers who have self-employment income should carefully track their income and expenses to ensure accurate reporting of both income tax and self-employment tax.

Frequently Asked Questions