Introduction
Schedule 8812 trips up a lot of people. The Child Tax Credit (CTC), the Additional Child Tax Credit (ACTC), Form 1040 and the schedule itself are four separate things, yet they blur together at filing time.
Schedule 8812 is a U.S. federal tax schedule. It matters to Australia-based taxpayers with U.S. filing obligations, because U.S. citizens and green card holders generally report worldwide income wherever they live. It has nothing to do with Australian tax forms, and Australian tax residency does not decide U.S. eligibility.
This guide covers eligibility, the CTC and ACTC calculation, completing the schedule, carrying the result to Form 1040, and common errors. All figures are for tax year 2025.
Key Takeaways
- Schedule 8812 calculates credits for qualifying children and other dependents on an eligible 1040-series return.
- Results depend on child tests, SSNs, income, filing status and tax liability.
- The CTC is nonrefundable; the ACTC is the potentially refundable part.
- Filing Form 2555 bars the ACTC.
- Always check the IRS instructions for your tax year.
What Is Schedule 8812 and When Is It Used?
What Schedule 8812 calculates
Schedule 8812, "Credits for Qualifying Children and Other Dependents," calculates the CTC, the Credit for Other Dependents (ODC) and the ACTC. It attaches to Form 1040, 1040-SR or an eligible 1040-NR. The final amounts transfer to those returns (line 19 for the nonrefundable credit, line 28 for the ACTC). Confirm line references against the current IRS form.
When you need it
You complete the schedule when claiming a child-related credit. It becomes essential when the available credit exceeds your income tax liability, since the refundable ACTC must then be worked out.
Completing it does not guarantee the maximum credit or a refund. The result depends on eligibility, income, liability and current limits.
CTC, ACTC and ODC compared
| Credit (2025) | Maximum | Refundability | Who it covers |
|---|---|---|---|
| CTC | $2,200 per child | Nonrefundable, limited by liability | Child under 17 with required SSN |
| ACTC | $1,700 per child | Refundable, formula-limited | Refundable portion of the CTC, not on top of $2,200 |
| ODC | $500 per dependent | Nonrefundable | Dependents who don't qualify for CTC/ACTC |
Older articles quoting a $2,000 CTC are outdated.
Who Qualifies for the Child Tax Credit and ACTC?
Qualifying-child tests
A child must meet every test:
- Relationship: child, stepchild, eligible foster child, sibling, stepsibling, half-sibling, or a descendant of any of these
- Age: under 17 at year-end
- Support: the child did not provide more than half of their own support
- Residence: lived with you more than half the year (exceptions apply). This means living with you, not necessarily in the United States
- Dependency: you claim the child as a dependent
- Joint return: the child doesn't file one, except solely to recover withheld or estimated tax
- Citizenship: U.S. citizen, national or resident alien
Taxpayer and income requirements
The phaseout starts at modified AGI above $400,000 for married filing jointly and $200,000 for everyone else. Modified AGI adds back certain excluded income, including Form 2555 amounts. Any MAGI over the threshold is rounded up to the next $1,000 and multiplied by 5%.
The ordinary ACTC is 15% of earned income above $2,500, capped at $1,700 per child. Nontaxable combat pay counts as earned income for this purpose.
For expats, filing Form 2555 bars the ACTC. The CTC and Other Dependent Credit (ODC) remain available, subject to their own limits.
Identification numbers
| Credit | Taxpayer | Child/dependent |
|---|---|---|
| CTC/ACTC | Employment-valid SSN issued before the due date, including extensions | Employment-valid SSN; ITIN or ATIN alone is not enough |
| ODC | SSN or ITIN issued by the due date | SSN, ITIN or ATIN |
For joint returns, at least one spouse must meet the SSN rule. You generally can't fix late issuance by amending.
Qualifying children versus other dependents
A dependent who fails the child tests, such as an older child, or who lacks the required SSN, may fall under the ODC instead. You can't claim both credits for the same person. Qualifying-relative tests include gross income below $5,200.
A practical eligibility checklist
- Is the child your qualifying dependent under all seven tests?
- Do you and the child hold valid SSNs on time?
- Do your filing status and income fit the thresholds?
- Are you claiming Form 2555 exclusions?
- Will your tax liability reduce the nonrefundable credit?
Australia-based filers should not swap in Australian residency assumptions. Dual-country situations deserve professional review.
How Schedule 8812 Calculates the Child Tax Credit and ACTC
Step 1: Establish the preliminary credit
Multiply qualifying children by $2,200 and other dependents by $500. Add them together. Use the amounts on the current IRS Schedule 8812 and its instructions.
Step 2: Apply income and tax-liability limits
Subtract any phaseout reduction. If it eliminates the credit, stop there. Otherwise, Worksheet A limits the nonrefundable amount using your tax from Form 1040 line 18, less certain Schedule 3 credits.
- Exceeds liability: the excess may flow to the ACTC
- Matches liability: no ACTC remains
- Falls short of liability: the full amount is used
Step 3: Determine the ACTC
The ACTC is the remaining credit, limited by $1,700 per child and by 15% of earned income above $2,500.
- Three or more children: if line 16b is $5,100 or more, Part II-B allows a payroll-tax alternative you compare with the ordinary result
- Puerto Rico: bona fide residents may qualify with one child and use a separate route
- Form 2555 filers: no ACTC
Step 4: A hypothetical example
Educational only, not a refund prediction. A married couple filing jointly has two children under 17, earned income of $60,000, modified AGI of $60,000 and income tax of $1,000.
- Preliminary credit: 2 × $2,200 = $4,400. No phaseout applies.
- Nonrefundable CTC: limited to the $1,000 liability.
- Remaining credit: $3,400.
- ACTC cap: 2 × $1,700 = $3,400.
- Earned-income formula: 15% × ($60,000 − $2,500) = $8,625.
- ACTC: the smallest of those, so $3,400.
Step 5: Carry the result to Form 1040
The nonrefundable credit goes to line 19 and the ACTC to line 28. A refundable credit increases a refund only after every other return adjustment is counted.
How to Complete and File Schedule 8812
Gather information first
Collect:
- Form 1040-series details and your filing status
- Each dependent's legal name, SSN or other ID, date of birth and relationship
- Earned-income records and any special forms, such as Form 2555
Names and numbers must match Social Security cards, and the return must be for the correct year.
Work through the schedule in order
Follow the IRS sequence in order:
- Part I: preliminary credit and phaseout, liability limit
- Part II-A: ACTC formula
- Part II-B: payroll-tax alternative if applicable
- Part II-C: final ACTC
Use the official IRS PDF and instructions for the current year. Instructions downloaded before January 23, 2026 contain a corrected SSN heading: the number must be issued "before" the due date.
Review, attach and retain
- Recheck arithmetic, filing status and income entries
- Confirm each dependent has one credit box checked, not both
- Sign the return (both spouses if joint)
- Attach Form 8332 if a noncustodial release applies
- Keep records generally for 3 years, or 6 years for certain unreported income
Cross-border cases with foreign income or business interests often need experienced help. VJM Global supports Australia-based and other cross-border taxpayers with U.S. return preparation through U.S.-compliant professionals, following IRS protocols, subject to an individual review.
Common Errors and Special Situations
Errors that change the result
- Using the old $2,000 credit amount
- Using the wrong year's instructions
- Two taxpayers claiming the same child
- SSNs that don't match IRS records
- Leaving out earned income
- Misclassifying a dependent
- Skipping Schedule 8812 when required
A qualifying dependent doesn't automatically receive the full CTC or ACTC.
Custody, birth, death and temporary absence
- Custody: The custodial parent usually has more overnights; with equal nights, the higher-AGI parent claims.
- Form 8332: A noncustodial parent needs a signed, unconditional release attached each year.
- Birth or death: a child born and deceased in 2025 with no SSN: enter "Died" and attach proof of live birth.
- Temporary absence: illness, school, business, vacation, military service and juvenile detention generally count as living together.
Publication 501 sets tiebreakers: a parent beats a nonparent, longer residence beats shorter, and then higher AGI.
IRS notices, rejected claims and improper claims
If you receive a notice, read it, compare it with your return, gather proof and follow the response instructions. A CP87A means another return used the same SSN. A CP08 on a missed ACTC calls for Form 15110 plus Schedule 8812 within 30 days.
After a disallowance, Form 8862 is generally required before you can claim the credit again. Bans run 2 years for reckless disregard and 10 years for fraud, and the accuracy penalty is 20% of the underpayment.
TIGTA's FY2025 report put ACTC improper payments at $4.5 billion (13.6%) for tax year 2023 returns. Get professional help for prior disallowances, fraud allegations or cross-border income.
Frequently Asked Questions
What is Schedule 8812 on Form 1040?
It is the schedule attached to an eligible 1040-series return to calculate the CTC, ODC and ACTC under current IRS rules.
What is ACTC from Schedule 8812?
The ACTC is the refundable portion of the child credit, up to $1,700 per child under the formula. It's subject to child, earned-income and other limits.
What makes you qualify for the Additional Child Tax Credit?
You need a qualifying child, valid SSNs, earned income above $2,500 and income under the phaseout. Filing Form 2555 disqualifies you.
Should the mom or dad claim the Child Tax Credit?
Only the person meeting the dependency and qualifying-child rules. Usually that's the custodial parent unless a valid Form 8332 release exists.
What form do I need to claim my child on taxes?
Start with Form 1040, 1040-SR or an eligible 1040-NR, then add Schedule 8812. Forms 8332 or 8862 may also apply.
