Child Tax Credit Calculator 2026-2030

Tax years 2026-2030. Child Tax Credit, credit for other dependents and the refundable Additional Child Tax Credit. Phase-out, tax limitation, SSN rule. Schedule 8812.
IRC 24IRC 24(d) - ACTCIRC 24(h) - post-2017 rulesSchedule 8812
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Tax Year, Filing Status & Children

2026 credit amount and refundable limit are from Rev. Proc. 2025-32 section 4.05. 2027-2030 indexed amounts are projections.
Used only for 2027-2030. Credit amount indexed under IRC 24(i)(2) (base year 2024); refundable limit under IRC 24(i)(1) (base year 2017); both rounded down to a multiple of $100 (IRC 24(i)(3)).
Phase-out threshold: $400,000 joint, $200,000 all other (IRC 24(h)(3)). Not indexed for inflation.
Schedule 8812 line 4. Age under 17 at year end (IRC 24(c)(1)); the child and at least one taxpayer must have an SSN issued before the return due date (IRC 24(h)(7)).
Schedule 8812 line 6: dependents age 17 or older, and qualifying children who lack the required SSN but have an ITIN or ATIN. $500 each, not indexed (IRC 24(h)(4)).
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Income & Tax

Schedule 8812 line 3: Form 1040 line 11b plus excluded Puerto Rico income, Form 2555 exclusions and Form 4563 exclusions. IRC 24(b)(1).
Schedule 8812 line 18a (wages, net self-employment earnings and other earned income, plus nontaxable combat pay on line 18b). IRC 24(d)(1)(B)(i).
Credit Limit Worksheet A, line 3 (Schedule 8812 line 13): Form 1040 line 18 less Schedule 3 lines 1-4, 5b, 6d, 6f, 6l and 6m. Default is an example; enter your own figure.
Only used with 3 or more qualifying children. Social security and Medicare tax withheld (W-2 boxes 4 and 6, both spouses) plus Schedule 1 line 15, Schedule 2 lines 5, 6 and 13. IRC 24(d)(1)(B)(ii), (d)(2).
Form 1040 line 27a plus Schedule 3 line 11. Used only with 3 or more qualifying children.
Not modeled: Form 2555 filers (no ACTC), Puerto Rico bona fide residents, claims disallowed under IRC 24(g), and advance payments under IRC 7527A (none in effect).
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Credit Results

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Last verified: October 29, 2026. Figures checked against IRC 24 (Cornell LII), Rev. Proc. 2025-32 sections 2.03 and 4.05, and the 2025 Schedule 8812 and Instructions.
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