529 Plan vs. Custodial Account: Which Should You Choose for Your Child?
Choosing between a 529 plan vs. custodial account is one of the most common questions we hear from parents and grandparents who want to start saving for a child’s future. Both accounts let you set money aside today for a young person’s benefit, but they work very differently once you look at taxes, financial aid, and who ultimately controls the funds. Understanding these differences before you open an account can save your family thousands of dollars and considerable frustration down the road.
What Is a 529 Plan?
A 529 plan is a tax-advantaged savings account designed specifically for education expenses. Contributions grow tax-deferred, and withdrawals are entirely tax-free at the federal level when used for qualified expenses such as tuition, room and board, books, and certain K-12 costs.
For 2026, the annual gift tax exclusion is $19,000 per beneficiary ($38,000 for a married couple), and 529 plans allow a special five-year “superfunding” election that lets a contributor front-load up to $95,000 per beneficiary ($190,000 for a married couple) in a single year without triggering gift tax, as long as it is treated as spread evenly over five years. Details on the gift tax exclusion and reporting requirements are available directly from the IRS gift tax FAQ page.
Since 2024, unused 529 funds have gained new flexibility: under SECURE 2.0, up to $35,000 in lifetime funds can be rolled from a 529 plan into the beneficiary’s Roth IRA, provided the account has been open at least 15 years and other conditions are met. This has meaningfully reduced the old “use it or lose it” worry that kept some families away from 529 plans in the past.
What Is a Custodial Account (UTMA/UGMA)?
A custodial account, established under the Uniform Transfers to Minors Act (UTMA) or Uniform Gifts to Minors Act (UGMA), is a far more flexible vehicle. Funds contributed to a custodial account can be used for anything that benefits the child, not just education, and can hold a broader range of assets, including securities and, under UTMA rules, real estate.
The tradeoff is control and tax treatment. Once you contribute to a custodial account, the gift is irrevocable and legally belongs to the child. In California, a custodian may delay the transfer of control until the child turns 21 (or up to age 25 if specified when the account is created), rather than the standard age of 18. Earnings in the account are also subject to the “kiddie tax”: in 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 parents’ marginal rate, requiring the child to file IRS Form 8615.
529 Plan vs. Custodial Account: Key Differences
| Feature | 529 Plan | Custodial Account (UTMA/UGMA) |
|---|---|---|
| Use of funds | Education expenses only (or Roth IRA rollover, within limits) | Any purpose that benefits the child |
| Tax treatment | Tax-free growth and withdrawals for qualified expenses | Kiddie tax applies above $2,700 in unearned income (2026) |
| Who controls the account | Account owner (typically parent) retains control indefinitely | Child gains full control at age of majority (18-25 in California) |
| Financial aid impact | Counted as parent asset, reduces aid by up to 5.64% | Counted as student asset, reduces aid by up to 20% |
How Each Account Affects Financial Aid
This is often the deciding factor for families focused on college costs. Because a parent-owned 529 plan is reported as a parental asset on the FAFSA, it reduces need-based aid eligibility by a maximum of 5.64% of the account value. A custodial account, by contrast, is considered the student’s own asset and is assessed at a much steeper rate of up to 20%. For families who anticipate qualifying for need-based financial aid, this difference alone often favors the 529 plan.
California Considerations for the 529-to-Roth Rollover
One important wrinkle for California families: the state does not currently conform to the federal SECURE 2.0 provision allowing tax-free 529-to-Roth IRA rollovers. Under current California law, a rollover from a 529 plan to a Roth IRA is includible in California taxable income and subject to an additional 2.5% state tax. Pending legislation would extend modified conformity to this treatment for tax years beginning in 2026, so the rules here may change. Families considering this strategy should check the latest guidance from the California Franchise Tax Board before assuming the rollover will be tax-free at the state level.
Which Is Right for Your Family?
If your primary goal is funding college or other qualified education expenses, a 529 plan generally offers superior tax treatment, a smaller financial aid penalty, and the added flexibility of the Roth IRA rollover option. If you want to give a child broader flexibility to use funds for a first home, a business, or other non-education goals, or you are contributing smaller amounts where the kiddie tax impact is minimal, a custodial account may be a better fit.
Many families use both: a 529 plan as the primary education savings vehicle, with a smaller custodial account for non-education gifts from grandparents or other relatives. The right combination depends on your income, your child’s likely financial aid eligibility, and how much control you want to retain as the funds grow.
You can find general program information, including state-specific plan options, through the IRS tax benefits for education information center.
If you would like help deciding between a 529 plan vs. custodial account for your own family’s situation, we invite you to schedule a free 30-minute call with Rooney Wealth Management.
Rooney Wealth Management LLC is an investment adviser registered with the state of California. This article is for educational purposes only and is not tax, legal, or investment advice. Please consult your tax or financial professional regarding your specific situation.
