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Official form guide
Form 15110: Additional Child Tax Credit Worksheet
IRS Form 15110 is the Additional Child Tax Credit Worksheet used to calculate eligibility for the credit by taxpayers claiming dependents on their 2025 tax return. The form revision date listed is February 2026.
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IRS Form 15110 - Additional Child Tax Credit Worksheet
IRS Form 15110 is the Additional Child Tax Credit Worksheet used to calculate eligibility for the credit by taxpayers claiming dependents on their 2025 tax return. The form revision date listed is February 2026.
Risk Radar
Scan points- 1Do not include any child on Form 15110 that was not reported on your original 2025 income tax return.
- 2Failing to list a child's name exactly as it appears on their Social Security card.
- 3Omitting a child’s SSN when listing them on Form 15110.
- 4Answering 'No' to any single eligibility factor for a listed dependent child.
- 5Not including documentation (like birth certificate) if the child was born and died in 2025.
Plain English
This worksheet helps determine if a dependent child qualifies for the Additional Child Tax Credit when filing taxes for the 2025 tax year. By completing this, filers verify that each child meets several specific requirements to claim the credit correctly. If you believe you qualify but didn't list children on your original return, use Form 1040-X instead.
Submission Date
- Filing date: 2026-02-03 17:10:45
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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What this form is for
- Use this form when you believe you qualify for the Additional Child Tax Credit and wish to report children who were not included on your originally filed 2025 tax return.
- Do not use this form when a child does not meet ALL of the eligibility factors listed (e.g., they failed one test, resulting in a 'No' answer).
- Check Form 1040-X instead when you need to report additional children but are claiming the credit based on an original return that already reported dependents.
Form selector
Use this form or another form?
Claiming credit for children not reported on the original return
You must file this worksheet if you believe a child qualifies but was omitted from your initial filing.
✓ Check eligibility factors carefully before filling out.
Reporting qualifying children who were already listed on the return
Include additional details for children already reported using a separate paper attached to this worksheet.
✓ Ensure you list Name, SSN, and Eligibility response on the separate sheet.
Claiming credit while filing jointly but only seeking a refund of estimated/withheld taxes
This specific scenario allows filing jointly even if the child is not filing a joint return for that year.
✓ Verify this condition aligns with your filing status before proceeding.
Deadline or filing window
This worksheet applies to the 2025 tax year. The dependent child must have an SSN valid before the due date of the 2025 tax return, which includes extensions. No specific final filing deadline is listed on this form itself.
Checklist
What you need before filling it out
Child's Name
The name as it appears on the Social Security card for each dependent child. · Section requiring input below eligibility factors.
Social Security Number
The SSN valid for employment issued to the child before the tax return due date (or birth/death in 2025). · Next to each listed Child's Name.
Eligibility Factor Checkboxes
A 'Yes' or 'No' response for all six specific eligibility tests (e.g., Under 17, Relationship Test). · Next to each listed Child's Name/SSN pair.
Qualifying Children Count
The total number of children who meet ALL eligibility factors (the final tally). · Implied by totaling the checked boxes on the worksheet.
Filer Contact Information
Your name, SSN, spouse’s name/SSN, current address, phone numbers, and best call times. · Top section of the form.
Before you submit
- 1The child's name is filled in exactly as it appears on their Social Security card.
- 2Each dependent child listed has a valid SSN that meets the required criteria for 2025.
- 3A 'Yes' or 'No' response has been provided for every one of the six eligibility factors for each child.
- 4If children were reported originally, their details are also included on a separate paper.
- 5The total count of qualifying children is accurately recorded on the worksheet.
- 6If at least one child qualifies, a completed Schedule 8812 is attached to this Form 15110.
- 7All required personal and address information (including spouse details) has been entered.
How to file this form
- 1Complete the top section by filling in your name, SSN, spouse's details, and current contact information.
- 2For each child, fill in their Name and Social Security Number on Form 15110.
- 3Determine if each child meets ALL six eligibility factors and mark 'Yes' or 'No' accordingly for that child.
- 4Tally the total number of qualifying children who answered 'Yes' to all factors.
- 5If additional children are listed, ensure their details are also provided on a separate paper attached to this worksheet.
- 6Attach a completed Schedule 8812 (if at least one child qualifies).
- 7Send Form 15110 and supporting documents using the Document Upload Tool or the enclosed envelope.
Known limitations
- 1The worksheet does not apply to children whose information was not reported on the original 2025 income tax return.
- 2If a child is born and died in 2025, a copy of the child's birth certificate or hospital records showing live birth must be included with Form 15110.
- 3A child cannot qualify if they are filing a joint return for the year, unless that joint filing is solely to claim a refund of estimated or withheld taxes.
Field map
Compact field-by-field guide
General Info
2 items
Full legal name and taxpayer identification number (SSN or EIN).
Current mailing address.
Details
2 items
Complete all applicable sections of this form according to the official IRS instructions.
Enter the relevant dollar amount if this form involves tax calculation.
Certification
1 items
Read and acknowledge any certifications required by this form.
Signatures
1 items
Sign and date. Unsigned forms cannot be processed.
Almost done reviewing the fields?
Fillable formOpen in Editor->The current edition is Form 15110 (Rev. 2-2026), dated February 2026. The source does not point to a specific 'latest information' page, but provides contact details for updates.
What changed or needs a fresh check
- Edition date — confirm the form reads February 2026.
- Catalog Number — confirm the number listed is 69805Z.
- Mailing address — check for the specific mailing location provided (not stated in the excerpt, but implied by instructions).
- Signature — ensure you sign and date the form before sending it.
- Required Companion Form — confirm that a completed Schedule 8812 is included if at least one child qualifies.
Quick Facts
Downloads
After you file
- 1Retain a copy of IRS Form 15110 after sending it.
- 2If reporting additional children on the original 2025 return, include their name, Social Security number, and eligibility factor response on separate paper with Form 15110.
- 3If at least one child qualifies, send Form 15110 along with a completed Schedule 8812 to the IRS.
- 4For instructions on using the Document Upload Tool, refer to your notice CP08.
Sources
- SRCForm 15110 is titled Additional Child Tax Credit Worksheet and has a revision date of February 2026 (Form p.1).
- SRCTo submit Form 15110, taxpayers must use the Document Upload Tool or send it in an enclosed envelope (Form p.1).
- SRCThe worksheet requires providing your name, SSN, and spouse’s information if filing jointly (Form p.1).
- SRCA child's name must appear as it is on their Social Security card for the 2025 tax year (Form p.1).
- SRCTo qualify in 2025, a child must be under the age of 17 at the end of the year (Form p.1).
- SRCIf you believe you may qualify but did not report children on your original return, file Form 1040-X instead of using this form alone (Form p.1).
Common confusion points
Which children must I list?
Fill in the name for each dependent child claimed on your 2025 tax return.
→ Ensure the child has a Social Security number valid for employment issued before the due date of your 2025 tax return (or was born/died in 2025).
What if I want to claim children not on my original return?
You cannot use Form 15110 alone.
→ File a Form 1040-X, Amended U.S. Individual Income Tax Return.
Does a child have to meet every single test?
Yes; the child must meet ALL of the listed eligibility factors.
→ If you answer 'No' to any factor for a child, that child does not qualify.
What if I file jointly but still want this worksheet?
The child can qualify provided they are not filing jointly unless the joint filing is only to claim an estimated or withheld tax refund.
→ Check the specific condition under the eligibility factors.
When should I use Form 15110 instead of just listing children on my return?
Use it when you want to report children who weren't reported on your original 2025 income tax return, but the source states this form *can* be used for that purpose if combined with other documentation.
What is the deadline context?
The eligibility factors apply to the 2025 tax year.
→ Ensure you are using the Form 15110 (Rev. 2-2026) edition.
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- Form 1040-X, Amended U.S. Individual Income Tax Return (must be filed instead of this worksheet to report children not on the original return)
Questions about IRS Form 15110
What is IRS Form 15110 used for?
This worksheet helps determine if a dependent child qualifies for the Additional Child Tax Credit when filing taxes for the 2025 tax year. By completing this, filers verify that each child meets several specific requirements to claim the credit correctly. If you believe you qualify but didn't list children on your original return, use Form 1040-X instead.
Who must file IRS Form 15110?
Taxpayers who claimed dependent children on their 2025 tax return must complete IRS Form 15110 (Additional Child Tax Credit Worksheet).
What information does IRS Form 15110 require?
The form collects personal identification information, including the child’s Name and Social Security Number. It also requires checking eligibility factors for each child listed.
When is IRS Form 15110 due?
This worksheet relates to the 2025 tax year. The child must have a Social Security number valid for employment issued before the due date of your tax return (including extensions).
Where do I file IRS Form 15110?
Filers can send Form 15110 using the Document Upload Tool, referencing their notice CP08. Alternatively, it can be sent in the enclosed envelope.
How do I complete IRS Form 15110?
First, complete your personal information (Name, SSN, spouse's info). Next, fill in the details and check the eligibility factors for each dependent child listed. Finally, determine how many children qualify to guide further filing steps.
What happens if IRS Form 15110 is filed incorrectly?
If a child does not meet ALL of the eligibility factors listed, that child does not qualify for the Additional Child Tax Credit on this worksheet. A child may qualify only if all criteria are met.
Which children must I list?
Fill in the name for each dependent child claimed on your 2025 tax return. Ensure the child has a Social Security number valid for employment issued before the due date of your 2025 tax return (or was born/died in 2025).
Source transparency
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