Quick Answer
The Additional Child Tax Credit provides refunds up to $1,800 per child (2026) when your Child Tax Credit exceeds your tax liability. It's calculated as 15% of earned income over $2,500, limited by the unused portion of your Child Tax Credit. Families with income under $25,000 may qualify for the enhanced calculation.
Best Answer
Diana Flores, EA
Families earning $25,000-$75,000 who may receive partial refunds through the Additional Child Tax Credit
How the Additional Child Tax Credit creates refunds
The Additional Child Tax Credit (ACTC) is the refundable portion of the Child Tax Credit. While the regular Child Tax Credit can only reduce your tax liability to zero, the ACTC can generate an actual refund check, even if you owe no federal taxes.
The two-step calculation process
Step 1: Calculate your Child Tax Credit
For 2026, you can claim up to $2,000 per qualifying child under age 17. This credit first reduces any taxes you owe.
Step 2: Calculate the Additional Child Tax Credit
If your Child Tax Credit is more than your tax liability, the excess can become a refund through ACTC, subject to these limits:
Example: Family with $45,000 earned income
The Rodriguez family has two qualifying children and earned $45,000 in 2026.
Their tax situation:
ACTC calculation:
Result: They receive a $2,500 refund through ACTC.
Income thresholds and phase-outs for 2026
Special rules for very low income families
Families with earned income under $25,000 may qualify for enhanced ACTC calculation:
Key factors affecting your ACTC refund
What you should do
Use our refund estimator to calculate your potential ACTC based on your specific income and number of children. Many families don't realize they can receive substantial refunds even when they owe little or no federal taxes.
If you've already filed and think you missed claiming ACTC, scan your return to see if an amendment could increase your refund.
Key takeaway: ACTC can provide up to $1,800 per child in refunds when your Child Tax Credit exceeds your tax liability, calculated as 15% of earned income over $2,500.
*Sources: [IRS Publication 972](https://www.irs.gov/pub/irs-pdf/p972.pdf), IRC Section 24*
Key Takeaway: ACTC can provide up to $1,800 per child in refunds when your Child Tax Credit exceeds your tax liability, calculated as 15% of earned income over $2,500.
Child Tax Credit and Additional Child Tax Credit amounts and income limits for 2026
| Income (MFJ) | Child Tax Credit | Max ACTC per Child | Phase-out Status |
|---|---|---|---|
| $0-$25,000 | $2,000 | $1,800 | Enhanced calculation |
| $25,000-$400,000 | $2,000 | $1,800 | No phase-out |
| $400,000-$440,000 | Phases out | Phases out | $50 per $1,000 over |
| Over $440,000 | $0 | $0 | Fully phased out |
More Perspectives
Michelle Woodard, JD
Divorced parents who need to understand how ACTC works when only one parent can claim the children
ACTC rules for divorced parents
When parents are divorced, only the parent who claims the child as a dependent can receive the Child Tax Credit and Additional Child Tax Credit. This creates significant tax planning opportunities and potential disputes.
Custody vs. tax benefits decision
The parent claiming the child receives:
Example: Strategic tax planning for divorced parents
Tom and Lisa are divorced with two children. For 2026:
If Tom claims both children:
If Lisa claims both children:
In this case, Lisa claiming the children generates $3,200 in refunds that the family wouldn't receive if Tom claimed them.
Form 8332 and ACTC planning
The custodial parent can release the dependency exemption using Form 8332, but this requires careful planning:
Divorce agreements should consider the total tax impact, including potential ACTC refunds, when determining who claims children.
Key takeaway: Divorced parents should analyze both parents' tax situations to determine who can maximize ACTC benefits, as refund potential varies significantly based on income and tax liability.
Key Takeaway: Divorced parents should analyze both parents' tax situations to determine who can maximize ACTC benefits, as refund potential varies significantly based on income and tax liability.
Diana Flores, EA
Grandparents who have legal guardianship of grandchildren and work part-time while receiving retirement income
ACTC for grandparents raising grandchildren
Grandparents with legal guardianship can claim the Child Tax Credit and Additional Child Tax Credit for their grandchildren, but the calculation depends on their earned income versus retirement income.
Earned income requirement for ACTC
Only earned income counts toward the ACTC calculation:
Example: Grandmother with mixed income sources
Betty (age 67) has legal guardianship of two grandchildren (ages 8 and 12). Her 2026 income:
Tax calculation:
ACTC calculation:
Result: Betty receives a $1,600 refund through ACTC, even though she has substantial total income.
Special considerations for grandparents
Many grandparents are surprised to learn they can receive significant refunds through ACTC, even when most of their income comes from retirement sources.
Key takeaway: Grandparents can claim ACTC based on earned income from part-time work, even when most of their total income comes from Social Security or pensions.
Key Takeaway: Grandparents can claim ACTC based on earned income from part-time work, even when most of their total income comes from Social Security or pensions.
Sources
- IRS Publication 972 — Child Tax Credit and Additional Child Tax Credit
- IRC Section 24 — Child Tax Credit statute
Related Questions
Reviewed by Diana Flores, EA on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.