Child Tax Credit Calculator
Calculate your 2026 Child Tax Credit under OBBBA. See CTC per child ($2,200), refundable ACTC ($1,700 max), phase-out thresholds, and how to claim on your W-4 for bigger paychecks.
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How to Use This Calculator
Your CTC tab
The default tab. Enter the number of qualifying children under 17, any other dependents (17+), your filing status, and AGI. The calculator shows your total CTC at the 2026 OBBBA rate ($2,200/child), any phase-out reduction, and the split between refundable (ACTC) and non-refundable portions. Expand "More options" to enter earned income for precise ACTC calculation and any other tax credits.
Monthly Impact tab
See how much your CTC is worth per paycheck if you claim it on your W-4 Step 3. Compare receiving the credit spread across paychecks vs. a lump sum at filing. If you already have an amount on W-4 Step 3, the calculator shows how much more to add.
CTC History & Planning tab
Compare your CTC across 2024, 2025, and 2026 to see the OBBBA increase. Enter an expected AGI change to project whether you'll trigger phase-out next year. Useful for year-end tax planning and income timing decisions.
Share your result
Every input is encoded in the URL. Click Share to send your exact scenario to a spouse, tax preparer, or financial advisor.
The Formula
The Child Tax Credit has three components: the base CTC, the refundable ACTC, and the Other Dependents Credit.
ACTC (refundable) = 15% × (earned income - $2,500)
capped at $1,700 per child
ODC = $500 × other dependents (17+ or non-qualifying)
Phase-out = $50 × (AGI - threshold) ÷ $1,000
MFJ threshold: $400,000
Single/HoH/MFS threshold: $200,000
Net CTC = CTC + ODC - Phase-out (min $0)
The ACTC is the refundable portion — you receive it even if you owe no tax. It's calculated as 15% of earned income above $2,500, capped at $1,700 per child. The remaining CTC is non-refundable and can only offset tax liability.
The phase-out reduces the credit by $50 for every $1,000 of AGI above the threshold. For a family with 2 children ($4,400 CTC + $0 ODC), the credit reaches zero at $488,000 AGI (MFJ) or $288,000 (others).
Example
The Rodriguez Family — Married, 2 Kids, $85K AGI
The Rodriguez family has 2 children (ages 5 and 9) and files MFJ with $85,000 AGI. Both parents work, with combined earned income of $85,000.
Your CTC tab
If their tax liability before credits is $3,000, they get $3,000 non-refundable + $1,400 refundable ACTC = $4,400 total. The full credit is available because they're well below the $400K MFJ phase-out threshold.
CTC History tab
Child Tax Credit History (2018–2026)
| Year | CTC per child | Refundable (ACTC) | Law |
|---|---|---|---|
| 2017 and before | $1,000 | $1,000 | Pre-TCJA |
| 2018–2020 | $2,000 | $1,400 | TCJA (P.L. 115-97) |
| 2021 | $3,000/$3,600 | Fully refundable | ARP (temporary) |
| 2022–2023 | $2,000 | $1,500–$1,600 | TCJA (reverted) |
| 2024 | $2,000 | $1,600 | TCJA |
| 2025 | $2,000 | $1,700 | TCJA |
| 2026+ | $2,200 | $1,700 | OBBBA (P.L. 119-21) — permanent |