Do You Have to Pay Taxes on Custodial Accounts? A Plain-English Guide to the

Yes, custodial account earnings are taxable. Under IRS kiddie tax rules for 2026, the first $1,350 of a child's unearned income is tax-free, the next $1,350 is taxed at the child's own rate, and anything above $2,700 is taxed at the parent's marginal rate (IRS Topic No. 553, June 2026). Contributions themselves are not taxable income, only dividends, interest, and capital gains generated inside the account trigger tax.

Yes, you do have to pay taxes on custodial accounts, but only on the earnings, not on the money you put in. The IRS applies the "kiddie tax" to unearned income inside UGMA and UTMA accounts, using a three-tier structure that shifts taxation from the child's low rate to the parent's marginal rate as earnings climb. For 2026, the cross-over point is $2,700 in dividends, interest, and capital gains. Below that, the child pays little or nothing. Above it, the parent's tax bracket takes over.

Comprendre les règles de l'IRS est essentiel pour savoir exactement qui paie les impôts sur un compte de dépôt et comment les revenus sont imposés.

Cette structure signifie que si vous vous demandez qui paie les impôts sur un compte de dépôt, la réponse est complexe.

In brief

• Custodial account earnings are taxable, contributions (gifts) are not. Only dividends, interest, and capital gains trigger the kiddie tax.
• For 2026, the first $1,350 is tax-free, the $1,351-to-$2,700 band is taxed at the child's rate, and anything above $2,700 is taxed at the parent's marginal rate.
• IRS Form 8814 lets parents report a child's income on their own return, but this convenience can push more earnings into a higher bracket.
• Digital assets held in custodial accounts follow the same three-tier kiddie tax structure, the IRS treats crypto as property, not currency.
• A 529 plan offers tax-free growth for education spending; a custodial account offers flexibility at the cost of ongoing annual tax liability.

What Is a Custodial Account and Who Owns the Money?

A custodial account is a financial account an adult opens on behalf of a minor child. The adult acts as custodian, managing the account, making investment decisions, and controlling withdrawals, but the assets inside belong irrevocably to the child from the moment they are deposited.

This ownership point is the reason taxes work the way they do. The IRS considers the minor child the legal owner of the account, so the earnings are taxed at the child's tax rate up to a certain point (Investopedia). When unearned income crosses the kiddie tax threshold, the parent's rate takes over, but the tax liability still belongs to the child in principle.

Custodial accounts come in two legal flavors. The distinction matters less for tax purposes than for what you can put inside them.

UGMA vs. UTMA: the key legal difference

UGMA accounts, created under the Uniform Gifts to Minors Act, can hold financial assets only: stocks, bonds, mutual funds, ETFs, cash, and annuities. UTMA accounts, governed by the Uniform Transfers to Minors Act, accept a broader range: real estate, intellectual property, art, and other tangible assets in addition to everything a UGMA can hold.

South Carolina and Vermont remain the only two states that have not adopted UTMA and still operate exclusively under UGMA law. For most families, the practical difference is slim: both structures face identical tax treatment under the IRS kiddie tax rules. The choice between UGMA and UTMA typically depends on whether the donor intends to transfer non-financial assets.

How ownership transfers affect tax liability

Once money is placed in a custodial account, the donor cannot take it back. The gift is final. When the child reaches the age of majority, typically 18 or 21, depending on state law, control of the account transfers fully to the child.

That transfer triggers no tax event. The account was always the child's property; the only change is who holds the checkbook. But the fact that the child owns the assets means any sale of securities, receipt of dividends, or realization of gains inside the account generates taxable income in the child's name every single year, not just at withdrawal. There is no tax-deferral wrapper around a custodial account the way a 529 or IRA provides.

Yes, Custodial Account Earnings Are Taxable, Here's the Three-Tier System

The kiddie tax is the IRS mechanism that prevents parents from shifting their own investment income into a child's low (or zero) tax bracket. For 2026, it divides a child's unearned income into three distinct tiers, each with its own tax treatment.

Our deep dive who has tax liability in a custodial account? 2026 irs rules explores this question further.

You'll find all the details in who claims income on a custodial account? (2026 rules.

The term "unearned income" covers dividends, interest, capital gains, and any other income not earned from wages or self-employment. Earned income, money a child makes from a summer job, for instance, is taxed separately under the standard income tax brackets and does not count toward the kiddie tax calculation.

IRS Topic No. 553 (June 2026) states plainly: "If your child's interest, dividends, and other unearned income total more than $2,700, it may be subject to a specific tax on the unearned income of certain children." Here is how the three tiers break down.

Tier 1: The tax-free floor ($0–$1,350)

The first $1,350 of a child's unearned income for 2026 is completely tax-free. No federal income tax is owed on this slice, regardless of how much total unearned income the account generates.

This floor applies per child, per year. A family with two children, each holding a custodial account, gets two separate $1,350 tax-free allowances. The standard deduction for a dependent child does not alter this treatment, the kiddie tax floor is a separate provision that directly shields the first $1,350 of investment income from any tax liability.

Tier 2: The child's own rate ($1,350–$2,700)

Unearned income from $1,351 to $2,700 is taxed at the child's own rate. For most children, who have little or no other taxable income, this means the 10% bracket for ordinary income (interest, non-qualified dividends) and potentially the 0% long-term capital gains rate for qualified dividends and realized gains held longer than one year.

At this tier, the tax bill is typically small. A child with exactly $2,700 in unearned income pays tax on only $1,350 of it, and at the lowest marginal rate. The effective rate on the full $2,700 often lands in the low single digits.

Tier 3: Parent's rate kicks in above $2,700

Everything above $2,700, the third dollar beyond the threshold and every dollar after, is taxed at the parent's marginal federal rate. If the parent is in the 24% bracket, that top slice faces a 24% hit. If the parent is in the 37% bracket, the child's excess unearned income is taxed at 37%.

The $2,700 figure is fixed by the IRS for 2026 and applies regardless of the child's age, as long as the child qualifies as a dependent under the kiddie tax rules, generally under age 19, or under age 24 if a full-time student. Once the child ages out of kiddie tax eligibility, all unearned income is taxed solely at the child's own rate, without any parent-rate override.

Worked Example: How Much Tax Does a Custodial Account Actually Owe?

Numbers in the abstract can feel slippery. Here is a concrete scenario that makes the three-tier structure tangible.

Take a minor child whose custodial account generates $3,500 in total unearned income for 2026, a mix of stock dividends, bond interest, and a small realized capital gain from a rebalanced ETF position. The parent filing the return is in the 24% marginal federal bracket.

Step-by-step tax calculation for a $3,500 earnings year

Here is the dollar-by-dollar breakdown under the 2026 kiddie tax rules:

• First $1,350: tax-free. Tax owed = $0.
• Next $1,350 ($1,351 to $2,700): taxed at the child's rate. Assuming most is qualified dividends taxed at the child's 0% long-term capital gains rate, and a small portion of interest taxed at 10%, the tax on this band might run roughly $30 to $50.
• Remaining $800 ($3,500 minus the $2,700 threshold): taxed at the parent's 24% marginal rate. Tax owed = approximately $192.

Total federal tax on the $3,500: roughly $222 to $242. The effective rate is around 6.3% to 6.9%. For comparison, if the entire $3,500 had been taxed at the parent's 24% rate, the bill would be $840. The three-tier structure shields most of the income.

How the parent's marginal rate changes the outcome

The parent's tax bracket is the single biggest variable in the kiddie tax outcome. Swap the 24% parent for one in the 32% bracket, and the $800 top slice costs $256 instead of $192. Put the parent in the 37% bracket, and that same $800 costs $296.

This dynamic creates a planning consideration: families in higher brackets may want to keep custodial account balances modest, or favor investments that defer taxable events, broad-market ETFs with low turnover rather than high-dividend stocks or actively traded positions. The same $3,500 in a 529 plan, by contrast, would accumulate tax-free and face zero federal tax on withdrawal if spent on qualified education expenses.

Who Actually Files the Tax Return, the Child or the Parent?

When a child's custodial account generates enough unearned income to trigger a filing requirement, the family faces a practical choice: file a separate tax return in the child's name, or fold the child's income into the parent's return using IRS Form 8814.

A child must file their own return if unearned income exceeds $2,700, or if total gross income (earned plus unearned) exceeds the standard deduction for dependents. But even below that threshold, filing may be worthwhile to claim a refund on any taxes over-withheld by the custodian institution.

Filing on the child's own return

Filing a separate return for the child preserves the three-tier structure cleanly: the child's own return captures the tax-free floor and the child's-rate band, while the parent-rate override is calculated on the child's return using a special kiddie tax worksheet.

The parent's marginal rate determines the top-tier tax, but the tax liability remains on the child's return, not the parent's. This approach keeps the child's investment income siloed away from the parent's taxable income, avoiding any inflation of the parent's adjusted gross income that could phase out deductions or credits.

The downside is paperwork: an extra return to prepare, track, and file. For a child with only a few thousand dollars in dividends and a single brokerage 1099, the administrative overhead is modest. For more complex situations, multiple accounts, crypto transactions needing Form 8949, the time cost grows.

The Form 8814 parent election: convenience vs. cost

IRS Form 8814 lets parents report a child's interest and dividend income directly on their own Form 1040. The child then does not need to file a separate return. The form caps reportable income at $13,500 per child for 2026.

The trade-off matters. Under Form 8814, the first $1,350 is still tax-free, but the next $1,350 is taxed at the parent's rate, not the child's lower rate. For a child with exactly $2,700 in unearned income, filing separately means tax on $1,350 at the child's rate (often near zero). Using Form 8814 means tax on that same $1,350 at the parent's rate, potentially 24%, 32%, or higher.

Parents who use Form 8814 for simplicity should run the numbers both ways before committing. In many cases, the convenience costs real dollars.

The Common Mistake: Assuming Custodial Account Contributions Are Taxable

A frequent point of confusion: parents assume that depositing money into a custodial account creates a taxable event for the child. It does not.

Contributions to a UGMA or UTMA account are irrevocable gifts, not income to the recipient. The child owes zero income tax when the parent funds the account. The tax obligation begins only when the assets inside the account start producing earnings.

This distinction trips up families in two ways. Some over-report, mistakenly listing the contribution itself as taxable income on the child's return. Others panic at tax time, believing a $10,000 funding deposit will trigger a $2,400 tax bill, when in reality, only the dividends and interest that $10,000 generates during the year are subject to the kiddie tax.

Gifts vs. earnings: two separate tax questions

There are two separate tax regimes at play, and they operate on different timelines:

• Income tax applies annually to the dividends, interest, and capital gains the account produces. This is the kiddie tax domain.
• Gift tax applies to the act of transferring assets into the account, but only if the contribution exceeds the annual gift tax exclusion.

Custodial account contributions are generally governed by gift tax rules, but contributions themselves are not taxable income (NerdWallet, May 2026). For most families making moderate annual contributions, gift tax is a non-issue: the exclusion is high enough that most donors never file a gift tax return. The income tax on earnings, by contrast, hits every year the account is active.

Why the annual gift tax exclusion is a different calculation entirely

The annual gift tax exclusion allows a donor to give up to a certain amount per recipient per year without triggering any gift tax filing requirement. Contributions below that threshold pass tax-free, not income-tax-free, but free of any gift tax consequence.

Gifts above the exclusion require filing IRS Form 709, but even then, actual gift tax is rarely owed: the excess simply counts against the donor's lifetime gift and estate tax exemption.

The practical takeaway: funding a custodial account with $5,000 or even $15,000 in a single year typically creates zero gift tax liability and zero income tax liability at the moment of deposit. Only the subsequent earnings are taxed, and only then under the kiddie tax tiers.

Custodial Accounts vs. 529 Plans: The Tax Trade-Off in Plain Numbers

A custodial account is not a tax-advantaged vehicle. A 529 plan is. Choosing between them means weighing tax efficiency against flexibility.

A UGMA has no tax benefits compared to a 529 plan (Investopedia). In a 529, earnings accumulate without any annual tax drag, and withdrawals are entirely tax-free at the federal level, as long as the money pays for qualified education expenses: tuition, fees, books, and room and board.

In a custodial account, earnings are taxed every year. Even at modest rates, this annual leakage compounds over 15 or 18 years, leaving a lower net balance than an identically invested 529 portfolio.

When a 529 beats a UGMA on taxes

Account earnings in a 529 plan are not taxable if money is used for education (NerdWallet, October 2025). For a family certain that the funds will go toward college or K-12 tuition, the 529 wins decisively on after-tax returns.

Take the same $3,500 annual earnings scenario from earlier. In a custodial account at a 24% parent bracket, roughly $220 disappears to taxes each year. In a 529, that $220 stays invested and compounds. Over 15 years, assuming 6% annual returns, the cumulative tax savings exceed $5,000 per child.

Additionally, the 529 shields growth from the parent's AGI entirely, no Form 8814, no AGI creep, no phaseout headaches.

When flexibility of a custodial account is worth the tax drag

The custodial account offers something a 529 cannot: unrestricted use of funds. A 529 withdrawal spent on anything other than qualified education expenses triggers income tax plus a 10% penalty on the earnings portion. A custodial account withdrawal, once the child reaches majority age, can fund a car, a business start-up, a home down payment, or a gap year in Europe with no penalty.

For families who want to build wealth for their child without earmarking it exclusively for education, the annual tax drag of a custodial account is the price of that flexibility. One partial mitigation: invest the custodial account in low-turnover, tax-efficient assets, broad index ETFs, growth stocks that pay minimal dividends, and municipal bonds where appropriate for the parent's tax situation.

Crypto Assets in Custodial Accounts: An Extra Layer of IRS Scrutiny

The IRS classifies digital assets as property, not currency (IRS Digital Assets page, June 2026). This classification means that any gain, sale, exchange, or receipt of crypto inside a custodial account is a taxable event, and the kiddie tax tiers apply exactly as they do to stock dividends or bond interest.

The crypto angle matters more now than ever. Custodial accounts at mainstream brokerages increasingly offer access to spot Bitcoin ETFs and other crypto-linked products. A child whose UGMA holds a Bitcoin ETF that appreciates 40% in a year and is rebalanced triggers a capital gain, reportable, taxable, and subject to the same $1,350 / $2,700 kiddie tax thresholds.

Cela dit, la question de savoir si les prêts de crypto sont imposables est une préoccupation légitime pour de nombreux investisseurs.

"Custody" in crypto lending carries a different meaning from UGMA custodianship. In a non-custodial bitcoin loan, the borrower retains control of their private keys throughout the loan term. In a UGMA, the custodian controls the account until the child reaches majority age, but the assets still belong to the child. These are separate legal concepts that happen to share a word.

La taxation des actifs numériques dans les comptes de dépôt est une question importante, et l'on se demande souvent si les prêts de crypto sont imposables.

How the IRS treats digital assets held in custodial accounts

The IRS digital assets guidance (June 2026) treats crypto income identically to traditional investment income for kiddie tax purposes:

• A capital gain from selling a crypto ETF inside the custodial account = unearned income, reportable in the year of sale.
• Staking rewards or airdrops received inside the account = ordinary income at fair market value on the date received.
• Income from digital assets in the custody of a broker is reportable on standard 1099 forms starting in 2026, simplifying the paper trail that custodians must manage.

The practical consequence: a custodial account with crypto exposure demands more meticulous record-keeping than a stocks-only account. Every taxable event, and crypto generates more of them than buy-and-hold equities, needs cost-basis tracking and IRS reporting.

Kiddie tax meets crypto: which tier captures the gain?

The tiered structure remains the same regardless of asset type. Dividend income, bond interest, and crypto capital gains all pool together as "unearned income" for the kiddie tax calculation.

A child with $1,200 in stock dividends and $2,800 in realized crypto gains faces $4,000 in total unearned income. The first $1,350 is tax-free. The next $1,350 is taxed at the child's rate. The remaining $1,300, the slice above $2,700, is taxed at the parent's marginal rate.

Short-term crypto gains (assets held one year or less) are taxed as ordinary income, potentially hitting the parent's top bracket on the excess. Long-term gains (held more than one year) benefit from preferential capital gains rates even when the parent-rate override applies. The holding period matters at every tier.

Quick Checklist: What You Need to Do at Tax Time

1. Total the unearned income: add up all dividends, interest, capital gain distributions, and crypto-related taxable events from the custodial account for the calendar year.

2. Compare to the 2026 thresholds: identify how much falls into the $0–$1,350 tax-free band, the $1,351–$2,700 child-rate band, and the above-$2,700 parent-rate band.

3. Choose a filing path: run a rough calculation both ways, the child's own return versus Form 8814 on the parent's return. If the child's rate bracket is lower than the parent's, filing separately typically saves money.

4. Flag crypto holdings separately: any digital asset transactions inside the account require Form 8949 and Schedule D reporting, even if the total gain is small. The IRS digital assets question on Form 1040 applies to the child's return as well.

5. Plan ahead for next year: if this year's earnings crossed the $2,700 threshold, consider adjusting the account's investments toward lower-turnover positions or tax-efficient funds to reduce the annual tax bite.

Sources

• irs.gov
• irs.gov
• irs.gov
• nerdwallet.com
• nerdwallet.com
• investopedia.com

This content is educational and should not be read as an investment recommendation. Speak with a licensed advisor for guidance tailored to your circumstances.