How to Open a Custodial Account in the US: A Step-by-Step Guide for Parents

Opening a custodial account is one of the simplest ways to start investing for a child's future in the United States. Whether you are saving for college, a first car, or long-term wealth, understanding how to open a custodial account in the US helps you avoid costly mistakes and choose the right structure. This guide walks you through the process, the paperwork, and the key rules every parent should know.

What Is a Custodial Account and Why Open One?

A custodial account is a brokerage or savings account managed by an adult (the custodian) on behalf of a minor (the beneficiary). The two most common types are the UGMA (Uniform Gifts to Minors Act) and UTMA (Uniform Transfers to Minors Act). The difference matters: UGMA accounts typically hold financial assets like stocks and mutual funds, while UTMA accounts can also hold real estate and other property.

The main appeal is control and flexibility. Unlike a 529 plan, funds in a custodial account can be used for almost any purpose that benefits the child. Contributions are irrevocable gifts, and the assets legally belong to the minor. When the child reaches the age of majority—18 or 21 depending on the state—they gain full control of the account.

Step-by-Step: How to Open a Custodial Account in the US

The process usually takes less than an hour online. Here is the standard workflow.

1. Choose the account type and provider. Decide between UGMA and UTMA based on your state's rules and the assets you plan to hold. Then compare brokers and banks: look at fees, minimum deposits, investment options, and whether they support custodial registration. Major brokers such as Fidelity, Schwab, and Vanguard offer custodial accounts with no account minimums.

2. Gather the required documents. You will need the child's Social Security number (or ITIN), your own SSN, proof of address, and basic personal details for both parties. The minor does not need to sign anything.

3. Complete the application. Fill out the online form with the custodian's information first, then the beneficiary's. You will select the account type, link a funding source, and set up login credentials. Most providers verify identity electronically within minutes.

4. Fund the account. Transfer an initial deposit or set up recurring contributions. Remember that gifts above the annual IRS exclusion limit may require a gift tax return, so track contributions carefully.

5. Configure investments and permissions. Choose a portfolio, set up automatic investment plans, and decide whether to grant the child view-only access. Keep records of every contribution for tax purposes.

Tax Rules and Common Pitfalls

Custodial accounts follow "kiddie tax" rules. For 2024, the first $1,300 of unearned income is tax-free, the next $1,300 is taxed at the child's rate, and anything above $2,600 is taxed at the parents' rate. This makes custodial accounts less tax-efficient than 529 plans for large balances.

Another pitfall: irrevocability. Once you open a custodial account in the US and fund it, you cannot take the money back. Financial aid formulas also count these assets more heavily than parental assets, which can reduce eligibility. Finally, confirm your state's age of majority—some states allow termination at 18, others at 21 or 25.

Conclusion

Learning how to open a custodial account in the US is straightforward: pick UGMA or UTMA, choose a low-cost provider, submit the application with both SSNs, and fund it. The real work is planning—understanding kiddie tax limits, irrevocable gifts, and financial aid impact before you contribute. Done right, a custodial account gives your child a head start and a real stake in their financial future.

Compare custodial account providers today, check your state's age-of-majority rules, and open an account in under 30 minutes to start building your child's portfolio. Перейти к подборке →