A custodial account is one of the most flexible ways to invest for a child — no annual contribution limits, no restrictions on how the money is spent, and access to the same index funds you invest in yourself. The catch is that it becomes the child's money permanently. Here is how to use custodial accounts correctly in 2026.
What changed in 2026
- Fractional shares are now standard at every major custodial brokerage, meaning you can invest any dollar amount in any stock or fund — great for teaching with small contributions.
- The kiddie tax threshold adjusts annually — verify the current-year IRS figure (~$2,500 for 2026) before making large transfers.
- 529-to-Roth rollovers (established in 2024) changed the calculus slightly — a 529 now has more flexibility than before, making the custodial vs. 529 choice less clear-cut.
- Financial aid impact awareness grew. Custodial assets count against financial aid at a higher rate than parent-owned assets — a real consideration for college-bound children.
UGMA vs UTMA at a glance
| Feature |
UGMA |
UTMA |
| Asset types allowed |
Securities, cash, insurance |
Securities, cash, real estate, IP, more |
| State availability |
Most states |
All states |
| Transfer age |
18 or 21 (state-dependent) |
18, 21, or 25 (state-dependent) |
| Complexity |
Simple |
Slightly more flexible |
For most families investing in index funds and ETFs, UGMA and UTMA are functionally identical. Choose UTMA if your state offers it and you want the broadest flexibility.
Top custodial account providers
| Provider |
Min to open |
Fractional shares |
Index fund access |
Fee |
| Fidelity |
$0 |
Yes |
Excellent (ZERO funds) |
$0 |
| Charles Schwab |
$0 |
Yes |
Excellent |
$0 |
| Vanguard |
$0 (digital) |
Yes |
Excellent |
$0 |
| E*TRADE |
$0 |
Yes |
Good |
$0 |
| Betterment |
$0 |
Yes (ETFs) |
Good (robo-managed) |
0.25%/yr |
How to choose
- Already have a Fidelity or Schwab account? Open the custodial account there — unified login, easy transfers, and no learning curve.
- Want a set-it-and-forget-it approach? A robo-advisor custodial account (Betterment, Acorns Early) auto-invests contributions into age-based portfolios for a small fee.
- Want to teach investing actively? Fidelity's platform has the best educational resources for young investors, including a dedicated youth app once the child is older.
- Maximizing Vanguard funds? You can hold the same funds anywhere, but Vanguard has slightly higher minimums on some mutual funds — use ETF shares to get around this.
The financial aid reality
UTMA/UGMA assets are assessed at up to 20% in federal financial aid calculations (FAFSA), compared to about 5.6% for parent-owned assets. If your child is likely to apply for need-based aid, consider whether a 529 is a better structure for education savings — see Best 529 plans in 2026.
Common mistakes
Treating it as a 529 substitute. A custodial account has no tax-free growth for education. A 529 is better for education-specific savings; a custodial account is better for general wealth transfers.
Forgetting it becomes theirs. This is irrevocable. An 18-year-old can legally withdraw and spend every dollar. Only fund it with money you genuinely intend as a gift.
Holding high-turnover funds. Capital gains distributions inside a custodial account are taxable to the child annually. Use buy-and-hold index funds and ETFs to minimize taxable events.
Ignoring the kiddie tax. Once unearned income (dividends, gains) exceeds ~$2,500/year, the excess is taxed at your rate, not your child's. For large accounts, plan contributions accordingly.
What to skip
- Individual stock picking in a custodial account — the account horizon is long, and concentration risk is real. Total market index funds outperform most stock pickers over 18 years.
- Crypto in a custodial account unless you are comfortable with full volatility — it is speculative, and the timeframe for a child's account is typically 10–18 years.
- Accounts with trading commissions — every major custodian offers commission-free ETF trading in 2026; there is no reason to pay.
FAQ
Can I take the money back after contributing?
No. Contributions to a custodial account are an irrevocable gift to the minor. You can manage the investments as custodian but cannot withdraw for your own use.
What happens if the child dies before reaching adulthood?
The account assets become part of the child's estate and pass to their heirs (or per state intestacy rules). Consult an estate attorney for large balances.
Does a custodial account affect FAFSA?
Yes, at up to 20% of assets per year in the aid formula — higher than 529s or parent accounts. Factor this in for college-bound children.
When should I choose a 529 over a custodial account?
If the money is specifically for education, a 529's tax-free growth and state tax deductions usually win. Custodial accounts win for general wealth transfers with no spending restrictions.
Where to go next
See Best 529 plans in 2026, Best savings accounts for kids in 2026, and How to teach kids about money in 2026.