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Official form guide
Form 15110: Additional Child Tax Credit Worksheet
Internal Revenue Service Form 15110 is the Additional Child Tax Credit Worksheet that taxpayers use to report qualifying children from their 2025 return for the credit. The child must have a Social Security number valid for employment issued before the due date of the tax return (including extensions).
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IRS Form 15110 - Additional Child Tax Credit Worksheet
Internal Revenue Service Form 15110 is the Additional Child Tax Credit Worksheet that taxpayers use to report qualifying children from their 2025 return for the credit. The child must have a Social Security number valid for employment issued before the due date of the tax return (including extensions).
Risk Radar
Scan points- 1Including a child not reported on the original 2025 return will invalidate the worksheet.
- 2Including a child that was not reported on the original 2025 tax return.
- 3Providing a Social Security number that was not issued before the tax return due date (including extensions).
- 4Omitting a birth certificate or hospital record for a child born and died in 2025.
- 5Answering No to any eligibility factor for a child that actually meets the criteria.
Plain English
Form 15110 lets you tell the IRS which children you claimed on your 2025 return qualify for the Additional Child Tax Credit. You list each child, confirm they meet all eligibility rules, and send the worksheet with supporting documents. It is only for children already reported on your original return.
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 have at least one qualifying child for the 2025 tax year and need to submit the Additional Child Tax Credit Worksheet with a completed Schedule 8812.
- Do not use it when you need to claim the credit for children who were not reported on your original 2025 return.
- Check Form 1040‑X instead when you must amend your 2025 return to include additional children.
Form selector
Use this form or another form?
Child omitted from original return
Must amend the return to claim the credit
✓ Verify the child was not on the original 2025 return
Qualifying child reported on original return
Calculates the Additional Child Tax Credit
✓ Confirm at least one qualifying child is listed
Submitting worksheet and documents
Worksheet is required for credit submission
✓ Ensure all fields and supporting documents are completed
Deadline or filing window
Not stated in the official source
Checklist
What you need before filling it out
Child's name and SSN
Child's Social Security card · Form 15110 child section
Eligibility factor responses
Yes/No answers for each factor · Form 15110 eligibility checklist
Birth certificate or hospital records (if child born and died in 2025)
Copy of birth certificate or hospital record · Supporting documents attached
Primary telephone number
Current phone number · Contact information section
Schedule 8812
Completed Schedule 8812 · Separate tax form
Before you submit
- 1Verify the form revision date reads Rev. 2‑2026 (February 2026).
- 2Confirm your name and Social Security Number match the tax return.
- 3Enter each qualifying child’s name exactly as on their Social Security card.
- 4Provide each child’s Social Security Number issued before the tax‑return due date.
- 5Answer “Yes” to every eligibility factor for each child.
- 6Attach a copy of the birth certificate or hospital record if the child was born and died in 2025.
- 7Include a completed Schedule 8812 with the worksheet.
- 8Choose to upload the worksheet and supporting documents via the Document Upload Tool or place them in the enclosed envelope.
- 9Sign the worksheet (if signature required) and keep a copy for your records.
- 10Send the worksheet to the IRS using the selected submission method.
How to file this form
- 1Gather each qualifying child’s name, Social Security Number, and eligibility information.
- 2Complete Form 15110 by filling in personal contact details and child information.
- 3Attach a completed Schedule 8812 and any required supporting documents (e.g., birth certificate for a child born and died in 2025).
- 4Upload the worksheet and attachments through the IRS Document Upload Tool or mail the envelope to the IRS.
- 5Retain a copy of the submitted Form 15110 and supporting documents for your records.
Known limitations
- 1Form 15110 does not accept information for any child that wasn’t reported on the original 2025 income tax return.
- 2Form 15110 cannot be used to add children not reported on the original return; a Form 1040-X must be filed instead.
- 3Children without a Social Security number valid for employment before the tax return due date cannot be reported, except if the child was born and died in 2025.
- 4A child is ineligible if any eligibility factor is answered No.
- 5The worksheet is required only when at least one qualifying child exists; otherwise it is not needed.
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 worksheet is the February 2026 edition (Rev. 2‑2026). The source directs filers to the Document Upload Tool for the latest submission instructions.
What changed or needs a fresh check
- Edition date — confirm the form shows Rev. 2‑2026 (February 2026).
- Fee — Not stated in the official source.
- Mailing address — Not stated in the official source.
- Signature — Not stated in the official source.
Quick Facts
Downloads
After you file
- 1Keep a complete copy of the submitted Form 15110 and supporting documents for at least three years.
- 2Store the copy in a secure location separate from your original tax return records.
- 3Monitor the IRS portal or mail for an acknowledgment of receipt from the Document Upload Tool or mailed envelope.
- 4If you receive a notice indicating an error, correct it by filing a Form 1040-X to amend the original return.
- 5Retain any notice CP08 or correspondence for future reference.
- 6Verify that Schedule 8812 was included and correctly attached.
Sources
- SRCForm p.1 — Catalog Number 69805Z indicates Form 15110 (Rev. 2-2026) is titled Additional Child Tax Credit Worksheet.
- SRCForm p.1 — The worksheet must be sent using the Document Upload Tool with required supporting documents, referring to notice CP08.
- SRCForm p.1 — If you have at least one qualifying child, send this worksheet and a completed Schedule 8812.
- SRCForm p.1 — The child must have a Social Security number valid for employment issued before the due date of your tax return (including extensions), unless the child was born and died in 2025.
- SRCForm p.1 — For a child born and died in 2025, include a copy of the child's birth certificate or hospital records.
- SRCForm p.1 — A child doesn’t qualify if you answered No to any of the eligibility factors; a child may qualify if you answered Yes to all.
- SRCForm p.1 — IMPORTANT: Do not include information for any child that wasn’t reported on your original 2025 income tax return.
- SRCForm p.1 — If you believe you may qualify for the Additional Child Tax Credit and want to report children who weren’t reported on your originally filed return, you can’t use this form. Instead, you must file a Form 1040-X.
Common confusion points
Can I include a child that wasn't on my original 2025 return?
The form only accepts children already reported on the original return.
→ Verify the child appears on your filed 2025 return before using Form 15110.
Do I need a Social Security number for a child who was born and died in 2025?
The rule requires an SSN unless the child was born and died in 2025.
→ Provide a birth certificate or hospital record for that child instead of an SSN.
Do I have to answer all eligibility factors for each child?
A single "No" disqualifies the child.
→ Check that every eligibility factor is marked Yes for the child.
Do I send the worksheet by mail or upload?
The instructions mention both the Document Upload Tool and an envelope.
→ Choose the method indicated in notice CP08 or the enclosed envelope.
Do I need to attach Schedule 8812 if I have no qualifying children?
The worksheet is required only when at least one qualifying child exists.
→ Confirm you have at least one qualifying child before attaching Schedule 8812.
Can I file this form without a notice CP08?
The form references using the Document Upload Tool along with notice CP08.
→ Ensure you have notice CP08 or use the mailed envelope option.
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- notice CP08 – provides instructions for using the Document Upload Tool and mailing options.
Questions about IRS Form 15110
What is IRS Form 15110 used for?
Form 15110 lets you tell the IRS which children you claimed on your 2025 return qualify for the Additional Child Tax Credit. You list each child, confirm they meet all eligibility rules, and send the worksheet with supporting documents. It is only for children already reported on your original return.
Who must file IRS Form 15110?
Taxpayers who claimed at least one qualifying child on their 2025 income tax return and are seeking the Additional Child Tax Credit must file IRS Form 15110.
What information does IRS Form 15110 require?
The worksheet collects each child’s name, Social Security number, and answers to all eligibility factors; it also requires a completed Schedule 8812 and, if applicable, birth or hospital records for a child born and died in 2025.
Where do I file IRS Form 15110?
Send the completed worksheet and required documents using the IRS Document Upload Tool or mail it in the enclosed envelope as instructed on the form.
How do I complete IRS Form 15110?
Enter your contact information at the top of the form. List each dependent child claimed on the 2025 return, providing the name as it appears on the Social Security card and the child’s Social Security number. Answer Yes or No to every eligibility factor for each child and attach required supporting documents, such as a birth certificate for a child born and died in 2025. Include a completed Schedule 8812 and submit the worksheet via the Document Upload Tool or the enclosed mailing envelope.
What happens if IRS Form 15110 is filed incorrectly?
A child does not qualify for the credit if any eligibility factor is answered No, which can cause the credit to be denied.
Can I include a child that wasn't on my original 2025 return?
The form only accepts children already reported on the original return. Verify the child appears on your filed 2025 return before using Form 15110.
Do I need a Social Security number for a child who was born and died in 2025?
The rule requires an SSN unless the child was born and died in 2025. Provide a birth certificate or hospital record for that child instead of an SSN.
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