This calculator estimates your 2026 federal Earned Income Tax Credit (EITC) — a refundable credit for working people with low to moderate income. It applies the official rates and thresholds by number of qualifying children.
Who qualifies for the EITC
The EITC is a refundable credit, meaning it can reduce your tax below zero and result in a refund even if you owe no federal income tax. Broad eligibility rules for 2026:
- You must have earned income — wages, salaries, tips, or net self-employment income. Investment income, Social Security, and unemployment benefits are not earned income.
- Your adjusted gross income (AGI) must fall below the income limit for your tier and filing status.
- You must have a valid Social Security Number for yourself, your spouse (if married filing jointly), and any qualifying children claimed.
- You cannot file as married filing separately.
- You cannot have investment income exceeding $11,950 (approximately, for 2026 — this limit is inflation-adjusted annually). This limit is what causes the EITC to be zero for people with significant capital gains or dividends even at modest earned income levels.
- A qualifying child must meet age, relationship, and residency tests. A child must be under 19 (or under 24 if a full-time student), related to you, and have lived with you for more than half the year.
How it works
The EITC phases in with earned income, plateaus at a maximum, then phases out based on the greater of earned income and AGI:
phaseIn = min(earnedIncome * rate, maxCredit)
income = max(earnedIncome, AGI)
credit = max(0, phaseIn - max(0, income - phaseStart) * phaseRate)
The 2026 parameters by qualifying children are: no children — 7.65% rate, $649 max, phase-out from $10,620; one child — 34% rate, $4,328 max, 15.98% phase-out from $23,350; two children — 40% rate, $7,152 max, 21.06% phase-out from $23,350; three or more — 45% rate, $8,046 max, 21.06% phase-out from $23,350 (single/HoH starts).
Example
A single parent with two children earning $20,000 (AGI also $20,000): the phase-in is 20,000 * 40% = $8,000, capped at the $7,152 maximum. Income of $20,000 is below the $23,350 phase-out start, so there is no reduction. The estimated EITC is the full $7,152.
The phase-in, plateau, and phase-out structure
The EITC is shaped like a trapezoid when graphed against income. Understanding the three zones helps you plan:
Phase-in zone: credit grows from zero as earned income rises. People with very low income get a smaller credit simply because the phase-in percentage applies to a smaller base. A worker earning $5,000 with one child gets 34% × $5,000 = $1,700, less than the maximum.
Plateau: once earned income exceeds a threshold, the credit reaches its maximum and stays flat for a range of income. This is the sweet spot where extra income does not reduce the credit at all.
Phase-out zone: once income (the greater of earned income and AGI) exceeds the phase-out start, the credit shrinks. For a single parent with two children in 2026, every dollar of income above approximately $23,350 reduces the credit by about 21 cents until it reaches zero around $55,000–$57,000.
The married-filing-jointly thresholds are several thousand dollars higher than the single/HoH thresholds shown in this calculator, giving married couples more room before the phase-out begins.
Notes
Estimate only — not tax advice. Uses 2026 EITC rates and maximums by number of qualifying children with the single/head-of-household phase-out starts; married-filing-jointly thresholds are higher. Eligibility also depends on investment-income limits, valid Social Security numbers, and filing status that this tool does not verify. Confirm with the IRS at irs.gov.