Does this include refundable/additional credit?

No. It’s a simplified non-refundable view.

Are thresholds current?

They’re simplified current values. Update if rules change.

Is age/dependency checked?

Not here. This assumes all entered children qualify.

How can I lower my AGI to reduce phaseout?

Strategies like increasing pre-tax retirement contributions, HSA contributions, or timing certain income and deductions can affect AGI. Those strategies are highly individual, so discuss them with a tax professional.

No. Use a tax professional or official IRS tools for filing accuracy.

Can I use MAGI instead?

Use AGI as an estimate; some calculations use MAGI—adjust if needed.

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Child Tax Credit Eligibility

Estimate child tax credit eligibility and phaseout based on AGI, filing status, and number of qualifying children.

Results

Base credit (before phaseout): $2,000
Estimated credit after phaseout: $2,000

Overview

The child tax credit can reduce your federal income tax bill by up to a fixed amount per qualifying child, but the benefit phases out at higher income levels and the detailed rules can be confusing. Parents often just want a ballpark answer to two questions: “Do I qualify?” and “Roughly how much credit might I receive?”

This child tax credit eligibility calculator gives you a simplified snapshot. Based on your adjusted gross income (AGI), filing status, and number of qualifying children, it estimates a base credit and applies a simple phaseout formula to show an approximate credit after phaseout.

Use it for planning and sensitivity checks, then confirm exact amounts with IRS tools or a tax professional before filing.

How to use this calculator

Enter your adjusted gross income (AGI) for the year you’re planning or filing for; you can use a projected figure if you are still mid-year.
Select your filing status (Single, Head of Household, or Married Filing Jointly), since phaseout thresholds depend on this.
Enter the number of children you expect to qualify for the child tax credit based on age, relationship, and residency tests.
Review the base credit before phaseout and the estimated credit after applying the simplified phaseout formula.
Try different AGI scenarios (for example, higher or lower income) to see how changes in earnings might affect your credit.

Inputs explained

Adjusted gross income (AGI): Your AGI from your tax return or best estimate for the year. This is a key input for determining whether and how much the child tax credit is phased out.
Filing status: Your federal filing status (Single, Head of Household, or Married Filing Jointly). Different statuses use different AGI thresholds for phasing out the credit.
Qualifying children: The number of children who meet the IRS criteria for the child tax credit, including age, relationship, residency, support, and SSN requirements. This calculator assumes all children you enter qualify.

Outputs explained

Base credit (before phaseout): The total child tax credit before any income-based phaseout, computed as the per-child base amount multiplied by the number of qualifying children.
Estimated credit after phaseout: An approximate credit amount after applying a simplified phaseout based on your AGI and filing status. This is a planning estimate and may differ from the final amount on your tax return.

How it works

The calculator assumes a flat base credit per qualifying child (for example, $2,000 per child under current law in many years).

It multiplies the base credit per child by the number of qualifying children to compute the total base credit before any phaseout.

It then compares your AGI to a simplified threshold that depends on filing status (for example, £200k for Single/Head of Household and £400k for Married Filing Jointly in recent rules).

For each $1,000 (or part of $1,000) your AGI exceeds the threshold, the calculator reduces the total credit by a fixed amount (for example, $50 per $1,000 over the threshold).

The estimated credit after phaseout is Base credit minus reduction, floored at zero (you can’t receive less than $0).

This approach approximates how phaseouts erode the credit as income rises, while skipping many nuanced details.

Formula

Let C = Number of qualifying children
Let B = Base credit per child (e.g., $2,000)
Let AGI = Adjusted gross income
Let T = Threshold for filing status (e.g., $200,000 for Single/HOH, $400,000 for MFJ)

Base credit = B × C

If AGI ≤ T:
  Phaseout reduction = 0
Else:
  Excess = AGI − T
  Excess units = ceil(Excess ÷ 1,000)
  Phaseout reduction = Excess units × $50

Estimated credit = max(0, Base credit − Phaseout reduction)

When to use it

Checking whether your income is likely to trigger a phaseout of the child tax credit.
Estimating how much of the base credit you might still receive at different income levels.
Planning year‑end decisions—such as retirement contributions or bonus timing—with the potential child tax credit in mind.
Providing a rough estimate of credit amounts when budgeting for refunds or balance‑due payments.
Explaining how increasing income can reduce credits to family members or clients in simple, numeric terms.

Tips & cautions

If your AGI is below the threshold for your filing status, you’ll generally receive the full base credit per qualifying child in this simplified model.
If your income is near or above the threshold, small changes in AGI can meaningfully change your estimated credit—run multiple scenarios to understand sensitivity.
Remember that the child tax credit interacts with other parts of your tax return; your actual credit may differ due to additional rules, refundable portions, or other credits.
Tax law around the child tax credit has changed several times and may change again; periodically verify the base amounts and thresholds for the year you’re analyzing.
Use this calculator early in the year for planning, and then refine your numbers with detailed tax software or professional guidance as filing season approaches.
Uses a simplified, static base credit and phaseout formula; it does not capture all nuances of the child tax credit, including refundable portions and other related credits.
Assumes all children entered qualify under IRS rules; it does not validate age, residency, SSN, or support criteria.
Assumes current approximate thresholds for Single/Head of Household and Married Filing Jointly; actual thresholds and amounts may differ by tax year and law changes.
Does not model additional credits (such as other dependent credits) or interactions with alternative minimum tax, earned income credit, or other complex provisions.
Not suitable for final filing numbers; treat it as an educational planning tool rather than a substitute for full tax software or professional advice.

Worked examples

AGI $100k, single, 2 children (below threshold)

Base credit = $2,000 × 2 = $4,000.
Threshold for Single (simplified) = $200,000; AGI is below this.
Phaseout reduction = $0.
Estimated credit ≈ $4,000.

AGI $250k, single, 1 child (above threshold)

Base credit = $2,000 × 1 = $2,000.
Excess AGI = 250,000 − 200,000 = $50,000.
Excess units = 50,000 ÷ 1,000 = 50.
Phaseout reduction = 50 × $50 = $2,500.
Estimated credit = max(0, 2,000 − 2,500) = $0 (fully phased out in this simplified model).

AGI just above MFJ threshold with 3 children

AGI = $410,000; filing status = MFJ; threshold T = $400,000 (simplified).
Base credit = $2,000 × 3 = $6,000.
Excess AGI = 410,000 − 400,000 = $10,000.
Excess units = 10,000 ÷ 1,000 = 10; reduction = 10 × $50 = $500.
Estimated credit ≈ 6,000 − 500 = $5,500.

Deep dive

Estimate your child tax credit by entering AGI, filing status, and qualifying children to see a base credit and an approximate amount after income phaseout.

Use this child tax credit eligibility calculator to see whether higher income may reduce your credit and to plan your tax strategy accordingly.

FAQs

Does this include refundable/additional credit?: No. It’s a simplified non-refundable view.
Are thresholds current?: They’re simplified current values. Update if rules change.
Is age/dependency checked?: Not here. This assumes all entered children qualify.
How can I lower my AGI to reduce phaseout?: Strategies like increasing pre-tax retirement contributions, HSA contributions, or timing certain income and deductions can affect AGI. Those strategies are highly individual, so discuss them with a tax professional.
Is this tax advice?: No. Use a tax professional or official IRS tools for filing accuracy.
Can I use MAGI instead?: Use AGI as an estimate; some calculations use MAGI—adjust if needed.

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Simplified child tax credit estimate. Does not model refundable portions, detailed eligibility, or future rule changes. Consult a tax professional for accurate calculations.