For the 2026 tax year, a child who can be claimed as a dependent can earn up to $16,100 in wages, salary, or tips without owing any federal income tax. That ceiling comes from the standard deduction for a single filer. Investment income is treated far more strictly: only the first $1,350 escapes tax, and self-employment earnings trigger a separate tax at just $400. So the honest answer to how much a child can earn tax free depends entirely on where the money comes from.1Internal Revenue Service. Revenue Procedure 2025-322Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
Wages and the Dependent Standard Deduction
Earned income means money a child receives for work: wages, salaries, tips, and net self-employment profit. When a child is a dependent on someone else’s return, the standard deduction that shelters that income uses a special formula.
For 2026, the dependent standard deduction equals the greater of $1,350, or the child’s earned income plus $450. The result cannot exceed $16,100, the regular single-filer standard deduction.1Internal Revenue Service. Revenue Procedure 2025-32
The deduction grows with the paycheck. A teenager earning $6,000 gets a $6,450 deduction and owes nothing. A child earning $20,000 hits the $16,100 cap and pays tax on the remaining $3,900. A child with no earned income still gets the $1,350 floor, which matters the moment investment income shows up.
To be claimed as a dependent, the child generally must be under 19 at year-end (under 24 if a full-time student), live with the parent more than half the year, and not provide more than half of their own support.3Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
The $400 Self-Employment Trap
Self-employment earnings count as earned income for the standard deduction, so the same $16,100 shelter applies for income tax purposes. But self-employment carries a separate obligation. Once net self-employment profit reaches $400, the child owes self-employment tax regardless of whether any income tax is due.4Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
Self-employment tax funds Social Security and Medicare. A child who mows lawns and nets $500 owes no income tax, but still has to file a return with Schedule C and Schedule SE to pay that self-employment tax. There is no age exemption. Families miss this because the income tax picture looks fine on its own.
Investment Income and the Kiddie Tax
Unearned income covers interest, dividends, capital gains, and trust distributions. The tax-free zone here is small on purpose: the rules exist to stop parents from shifting investment income into a child’s name to catch a lower bracket.
For 2026, a child’s unearned income moves through three tiers:
- The first $1,350 is tax-free, absorbed by the standard deduction floor.
- The next $1,350 (up to $2,700 total) is taxed at the child’s own rate, typically 10%.
- Anything above $2,700 is taxed at the parent’s marginal rate under the Kiddie Tax.5Internal Revenue Service. Topic No. 553, Tax on a Child’s Investment and Other Unearned Income (Kiddie Tax)
The Kiddie Tax applies to children under 18 at year-end, 18-year-olds whose earned income doesn’t cover more than half their support, and full-time students aged 19 through 23 whose earned income doesn’t cover more than half their support. At least one parent must be alive at year-end, and the child cannot file a joint return.6Internal Revenue Service. 2025 Instructions for Form 8615
The calculation adds the child’s net unearned income (the amount above $2,700) to the parent’s taxable income and taxes it at whatever marginal rate results. A parent in the 32% bracket sees the child’s excess investment income taxed at 32% or higher. The child reports this on Form 8615, attached to their own Form 1040.
When a Child Has Both a Paycheck and Investment Income
Most working teenagers with custodial accounts have both, and the filing rule combines them. A dependent must file if gross income (earned plus unearned) exceeds the larger of $1,350 or their earned income plus $450, capped at $16,100.3Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
Take a 16-year-old with $4,000 in wages and $800 in dividends. Gross income is $4,800. The filing threshold is $4,450 ($4,000 + $450). Because $4,800 exceeds $4,450, a return is required. The $4,450 standard deduction covers most of it; the remaining $350 is taxable at the child’s rate. If the dividends had been $400 instead, gross income of $4,400 would sit below the $4,450 threshold and no return would be required.
When there is no earned income at all, the threshold drops to $1,350. A child with $1,400 in interest and no job must file, even if the tax owed is small.
Scholarships That Become Taxable
Scholarship money used for tuition, fees, books, and required supplies at an eligible institution is tax-free. The portion spent on room, board, or other living expenses is taxable.7Internal Revenue Service. Publication 970, Tax Benefits for Education
Compensation is also taxed. If a scholarship requires the student to work as a teaching or research assistant, the portion representing payment for those services is taxable, even when every student in the program has to do the same work. A scholarship that requires future service and imposes a substantial penalty for noncompliance is fully taxable as compensation in the year received.7Internal Revenue Service. Publication 970, Tax Benefits for Education
The taxable portion counts toward the filing threshold. If no W-2 was issued for it, the student reports it on Schedule 1 of Form 1040. College students often assume every dollar of their scholarship package is tax-free, and it usually isn’t.
W-4 Withholding for a Working Child
When a child starts a job, the employer provides a Form W-4. A child who had no federal income tax liability last year and expects none this year can claim exempt status, which stops federal income tax withholding from each paycheck.8Internal Revenue Service. Form W-4, Employee’s Withholding Certificate For a teenager earning well under $16,100, this often makes sense. There’s little reason to lend money to the IRS all year just to reclaim it in April.
Exempt status doesn’t affect Social Security or Medicare withholding, which still comes out of every check. If the child’s income ends up higher than expected, the full tax is due at filing. A child who claims exempt must submit a new W-4 by February 16 of the following year, or the employer will restart withholding at the default rate.
The Earned Income Credit Doesn’t Apply
A child who can be claimed as a dependent on a parent’s return cannot claim the Earned Income Tax Credit on their own return, even with qualifying wages.9Internal Revenue Service. Publication 596 (2025), Earned Income Credit (EIC) The dependency relationship disqualifies the child. Families who see a working teenager with modest wages sometimes expect the credit; it isn’t available.
Penalties If a Required Return Isn’t Filed
If a child owes tax and files late, the IRS applies its standard penalties. The failure-to-file penalty is 5% of the unpaid tax per month, up to 25%.10Internal Revenue Service. Failure to File Penalty A failure-to-pay penalty of 0.5% per month runs on top of that, also capping at 25%.11Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges
For returns required to be filed in 2026, a return more than 60 days late carries a minimum penalty of $525 or 100% of the tax owed, whichever is less.11Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges On a child’s small balance, that minimum can exceed the tax itself. The taxpayer’s age doesn’t change the calculation.
If no tax is owed, there is no penalty for filing late or not filing. Filing can still be worthwhile to recover federal income tax withheld from paychecks during the year.
State Taxes Are Separate
Every threshold above is federal. Most states with an income tax set their own filing thresholds for dependents, and those are often lower than the federal amounts. Some states follow the federal Kiddie Tax rules; others calculate a child’s unearned income independently. A child who owes nothing to the IRS can still owe state tax. Check the state revenue department for the specific dependent filing threshold that applies.