Child Tax Credit Paycheck Calculator 2026

How the 2026 Child Tax Credit works

For tax year 2026, the Child Tax Credit is worth up to $2,200 for each qualifying child under age 17. The One Big Beautiful Bill Act, signed in July 2025, made the credit structure permanent, raised the maximum from $2,000 to $2,200, and added inflation indexing starting in 2026.

To qualify, a child must be under 17 at the end of the year (December 31, 2026), be your dependent, be a U.S. citizen, national, or resident, and have a valid Social Security number issued before the filing deadline.

Up to $1,700 per child is refundable through the Additional Child Tax Credit, which means you can get that part back even if it is more than the tax you owe. The rest of the credit is nonrefundable: it can lower your tax to zero but not below.

Dependents who do not meet the under-17 rule may still earn you the $500 Credit for Other Dependents (ODC). That covers older teens, college students, and qualifying relatives like a parent you support. The ODC is always nonrefundable.

Income limits and how the credit phases out

You get the full credit if your modified AGI is at or below the threshold for your filing status: $400,000 for married filing jointly, and $200,000 for single, head of household, and married filing separately.

Above the threshold, your combined Child Tax Credit and Credit for Other Dependents drop by $50 for every $1,000 (or fraction of $1,000) over the limit. The excess is rounded up to the next $1,000 before the $50 is applied.

Here is how that plays out. Say a married couple files jointly with two children under 17 and $430,000 of income. Their base credit is $4,400. They are $30,000 over the $400,000 threshold, so the reduction is 30 times $50, or $1,500. Their credit after phaseout is $2,900.

At higher incomes the credit can phase out entirely. Once the reduction equals or passes your combined credit, the result is $0.

Refundable vs. nonrefundable: how much can come back as a refund

The nonrefundable part of the Child Tax Credit reduces the tax you owe. If your tax is already low, you might not use all of it.

The refundable Additional Child Tax Credit is the part you can still receive as a refund. For 2026 it is capped at $1,700 per qualifying child. It is also limited to 15% of your earned income above $2,500. If your earned income is $2,500 or less, the refundable amount is $0.

Say you have one qualifying child and $20,000 of earned income. 15% of ($20,000 minus $2,500) is $2,625, but the per-child cap of $1,700 applies, so the refundable portion is $1,700. The refundable amount can also never exceed your total credit after phaseout.

The $500 Credit for Other Dependents never refunds. It can only offset tax you owe.

Turning the credit into bigger paychecks (W-4 Step 3)

Most calculators stop at the annual figure on your tax return. The credit can also reach you sooner. On Form W-4 Step 3, you enter your children under 17 times $2,200 plus your other dependents times $500.

Your employer divides that Step 3 total by your number of pay periods and reduces federal withholding dollar-for-dollar each check. Two children means a $4,400 Step 3 entry; on biweekly pay (26 periods) that is about $169 less withheld per paycheck.

This is the refund-now versus bigger-paycheck tradeoff. Claiming the credit on Step 3 spreads it across the year as larger paychecks. Leaving Step 3 blank means more is withheld now and you collect the credit as a refund later.

One caution: the literal W-4 Step 3 entry ignores the phaseout. If your income is over your threshold, entering the full amount can under-withhold and leave you with a balance due. To check your full withholding setup, use the W-4 Withholding Estimator, then confirm the result on a real check with the Hourly Paycheck Calculator.