The Kiddie Tax: 2026 Rules and Thresholds

The tiers are built from the dependent standard deduction floor, $1,350 for 2026, unchanged from 2025. Double it and you have the $2,700 gate above which the parents' rate takes over.

Worked numbers, round and hypothetical: a 15-year-old's UTMA holds funds that throw off $6,000 of dividends and capital gain distributions in 2026, and her parents are in the 37% bracket. First $1,350: tax-free. Next $1,350: taxed at her 10% rate, $135. The remaining $3,300: taxed at the parents' rates. If it is qualified dividend income, that means the parents' 20% capital gains rate, $660. Total tax on the child's return: roughly $795, when the family expected roughly zero because "it's the kid's money."

One mercy: the income keeps its character. Long-term gains and qualified dividends pushed into the parents' bracket get the parents' capital gains rate, not their ordinary rate. The unfairness runs the other direction: a child whose own bracket would have delivered a 0% capital gains rate instead pays 15% or 20% because of who their parents are.

The name undersells the reach. The rule covers three groups at year end: every child under 18, every 18-year-old whose earned income does not exceed half of their own support, and every full-time student aged 19 through 23 whose earned income does not exceed half of their support. It also requires at least one living parent and does not apply to a married child filing jointly.

The support test is the pivot for the older groups, and it is specifically an earned-income support test. A 21-year-old who pays most of her own way with wages from a real job escapes the rule. A 21-year-old living on a trust distribution does not, because trust income is not earned income, no matter how much of her support it covers. Scholarships are ignored in the support calculation, which helps students on large aid packages stay classified as supported by their parents, for better or worse.

The under-18 group has no support test at all. A 17-year-old who earned $40,000 building an online business still runs her dividend income through the kiddie tax ladder, though the wages themselves are taxed at her own rates. Earned versus unearned is the whole game: compensation for work is earned; money that money makes (interest, dividends, gains, rents, royalties, and most taxable scholarship amounts) is unearned.

The default path: the child files their own return with Form 8615 attached. The form stacks the child's excess unearned income on top of the parents' taxable income and taxes it at the rate that results, which requires the parents' return numbers before the child's return can be finished. Divorced or separated parents use the custodial parent's figures; there are ordering rules for everything, and siblings with investment income all pull from the same parental return, allocated pro rata.

The convenient path: if the child's only income is interest, dividends, and capital gain distributions and it totals less than $13,500, the parents can elect on Form 8814 to fold it into their own return and skip the child's filing entirely. Convenient, and frequently more expensive: the election adds the child's income to the parents' AGI, which can inflate AGI-driven phaseouts and state tax, and it forfeits deductions the child could have used on their own return. Run both ways before defaulting to convenience.

A note on the standard deduction, since it drives the first tier: a dependent's 2026 standard deduction is the greater of $1,350 or earned income plus $450, capped at the regular $16,100. That is why a working teenager can earn five figures tax-free while the same teenager's dividends hit the ladder at $1,351. The code treats a paper route better than a portfolio.

UTMA accounts are where the kiddie tax does most of its damage, because they combine three irreversible facts. The money is legally the child's the moment it goes in; the account throws off taxable income every year whether anyone wanted income or not; and the child takes full control at the state's age of majority, usually 18 or 21. High-income parents fund a six-figure UTMA thinking of it as a tax-advantaged nest egg, and it is neither: above $2,700 of annual income it is taxed exactly as if the parents still owned it, minus the control.

Concrete version: $150,000 in a UTMA yielding 4% between dividends and fund distributions produces $6,000 a year of unearned income. For 37%-bracket parents, roughly $3,300 of that lands at their rates every year, harvesting a tax bill with no corresponding decision, sale, or benefit. Over a childhood that is tens of thousands of dollars of tax paid for the privilege of losing control of the money at 18 or 21. The same dollars in a 529 would have compounded untaxed; the tradeoffs run through the UTMA vs 529 comparison.

None of this makes UTMAs useless. They are the only kid account with an unlimited investment menu and no purpose restriction, funded within the $19,000 per-giver annual exclusion covered on the gift tax limit page. The trap is not the account; it is funding one with income-producing assets at a size where the ladder's top tier does all the taxing.

The fastest way to see the playing field is by account type, because the kiddie tax is really a statement about where kid money should and should not sit:

1. Use a 529 for education dollars.

Money growing inside a 529 never appears on anyone's return, so the ladder never sees it. For education savings this is close to a complete kiddie tax solution, with a state deduction on top in most states. For newborns, the new federal account adds a wrinkle worth understanding; the comparison is on the Trump accounts page, where tax deferral versus the UTMA's annual income drag is the central tradeoff.

2. Hold tax-efficient assets in the child's name.

If a UTMA exists, what it holds decides the annual damage. Growth-oriented index funds that distribute little, held without selling, can keep annual income under $2,700 on sizable balances. High-dividend funds, bond funds, and actively managed funds with big year-end distributions do the opposite. The kiddie tax is annual; unrealized appreciation is invisible to it.

3. Harvest gains inside the tier, every year.

The $2,700 corridor resets annually, and wasted corridor never comes back. Selling appreciated UTMA positions to realize roughly $2,700 of gain each year (less any dividends already using the space) moves basis upward at a 0% or trivial rate. Done over ten years, that is over $25,000 of gain taxed at almost nothing, versus the parents' 15% or 20% if realized in one adult-sized transaction later.

4. A Roth IRA for a kid with real earned income.

A child with wages can contribute the lesser of their earned income or $7,500 (2026) to a Roth IRA. Everything inside grows tax-free forever, the kiddie tax never touches it, and a parent can gift the contribution money while the child keeps the paycheck. Sixty years of compounding on a teenager's Roth contribution is the single best risk-free tax structure in the code.

5. Pay your child wages through the family business.

Wages are earned income, which means they are taxed at the child's own rates with a standard deduction of up to $16,100 in 2026, entirely outside the kiddie tax. Paid from a parent's sole proprietorship or a parents-only partnership to an under-18 child doing real, documented work at a reasonable rate, the wages are also FICA-exempt and deductible to the business at the parents' bracket. That earned income then unlocks the Roth in move four. The documentation and reasonable-wage requirements are the whole ballgame; the full mechanics are on the hiring your kids strategy page.

1. Gifting appreciated stock right before the sale.

Handing a child low-basis shares so "they" can sell at 0% fails twice: the gain above $2,700 comes right back at the parents' capital gains rate, and the transfer burned annual gift exclusion doing it. The strategy only works small and slow, inside the tier, over years.

2. Forgetting the mutual fund's December surprise.

Actively managed funds distribute capital gains whether you sold or not. A single large year-end distribution inside a child's account can blow through $2,700 in one line item. Check estimated distributions each November while there is still time to react.

3. Wages that do not survive scrutiny.

Paying your 8-year-old $16,000 as a "brand ambassador" invites the deduction being disallowed and reclassified. Real work, age-appropriate tasks, timesheets, market-rate pay, and actual payroll filings are what separate the strategy from an audit finding. If the wage would embarrass you read aloud to an examiner, lower it.

4. Winning the tax and losing the financial aid.

Assets in the child's name (UTMA) are weighted heavily against aid eligibility; income on the child's return can hurt too. A family optimizing the kiddie tax tier while a FAFSA year approaches can save hundreds in tax and forfeit thousands in aid. Sequence the moves against the aid calendar.

5. Scholarships nobody warned you about.

The portion of a scholarship covering room and board is taxable, and for kiddie tax purposes it counts as unearned income. A student on a full ride can owe kiddie tax at their parents' rate on aid money they never saw as cash. It is one of the least intuitive results in this area and worth checking before filing any student's return.