A fiduciary account holds money or property for someone else's benefit

A fiduciary account is a bank account where one person (the fiduciary) holds and manages money or property on behalf of another person (the beneficiary). The fiduciary is legally required to act in the beneficiary's best interest, not their own. The money in the account belongs to the beneficiary, even though the fiduciary's name appears on the account and they control it.

The most common example is a parent opening an account for a child's inheritance or college savings. The parent's name is on the account and they make decisions about the money, but the funds are legally the child's. When the child reaches a certain age or the purpose is met, the fiduciary hands over the money.

Fiduciary accounts exist because some people cannot manage their own money — children, people with severe illness or disability, or adults who lack the mental capacity to make financial decisions. A fiduciary account lets someone trusted handle the practical work while the law protects the beneficiary's interests.

Key Takeaways

  • A fiduciary account is owned by the beneficiary but controlled by the fiduciary, who must act in the beneficiary's interest, not their own.
  • Common types include custodial accounts for minors, guardianship accounts for people unable to manage money, and accounts created through a will or trust.
  • The fiduciary must keep detailed records, avoid mixing their own money with the account, and use funds only for the beneficiary's benefit.
  • Banks require proof of the fiduciary relationship — a court order, guardianship papers, or a custodial account agreement — before opening the account.

The difference between a fiduciary account and a regular joint account

A joint account is owned equally by both people on it. Either person can withdraw money, spend it however they want, and the money belongs to both of them. If one person dies, the other person keeps what is left.

A fiduciary account is owned entirely by the beneficiary. The fiduciary cannot spend the money on themselves, cannot keep what is left if the beneficiary dies (it goes to the beneficiary's estate or heirs), and must be able to prove every withdrawal was for the beneficiary's benefit. The fiduciary is accountable to the law, not just to the beneficiary.

This legal difference matters. If you open a regular joint account with an elderly parent to help them pay bills, you are technically a co-owner of that money. If you open a fiduciary account, you are a caretaker with duties and limits.

The three main types of fiduciary accounts

Custodial accounts for minors are the most straightforward. A parent, grandparent, or other adult opens an account in the child's name but controls it until the child reaches the age set by state law (usually 18 or 21). The account might hold birthday money, inheritance, or savings for college. The adult can withdraw money to pay for the child's needs — school, medical care, housing — but not for the adult's own expenses. When the child turns 18 or 21, the account becomes theirs to control.

Guardianship accounts are opened by court order when a judge has named someone as guardian for an adult who cannot manage their own affairs. This might be someone with severe intellectual disability, advanced dementia, or a serious mental illness. The guardian must file annual reports with the court showing how the money was spent. The account exists as long as the guardianship does.

Accounts created through a will or trust hold money left to someone who cannot manage it themselves — a young beneficiary, a person with a disability, or someone the deceased wanted protected from their own poor decisions. A trustee or executor manages the account according to the instructions in the will or trust document.

What the fiduciary is legally required to do

The fiduciary must keep the beneficiary's money separate from their own. Mixing the two — putting the beneficiary's money in your personal account or using it to pay your own bills — is illegal, even if you plan to pay it back. Most banks require fiduciary accounts to be held in the beneficiary's name, not the fiduciary's, to prevent this.

The fiduciary must keep records of every transaction. If a guardianship account is involved, the court may require annual accountings showing what money came in, what was spent, and what remains. Even without court oversight, the fiduciary should be able to explain any withdrawal if questioned.

The fiduciary must use the money only for the beneficiary's benefit. In a custodial account, this means the child's needs and reasonable expenses. In a guardianship account, it means the ward's living expenses, medical care, and other necessities. The fiduciary cannot use the account to pay their own debts, give themselves a loan, or invest the money in a risky venture.

The fiduciary must act honestly and in good faith. They cannot take a commission or fee from the account without court permission (in guardianship cases) or without the beneficiary's consent (once the beneficiary is old enough to consent). If the fiduciary breaches these duties, they can be sued and forced to repay the money.

How to open a fiduciary account at a bank

The process depends on the type of account. For a custodial account, you bring the child's birth certificate and your ID to the bank. You and the bank sign a custodial account agreement that names you as custodian and the child as beneficiary. The account is opened in the child's name, and you receive a debit card or checkbook to manage it.

For a guardianship account, you bring the court order appointing you as guardian. The bank will photocopy it and keep it on file. Some banks require you to post a bond (a form of insurance) before opening the account, though the court may have already ordered this. You will likely need to provide the court with the bank's account number for your annual reports.

For accounts created through a will or trust, you bring the will, trust document, or court papers showing your authority. The bank may require a certified copy. You will open the account in the beneficiary's name with yourself listed as trustee or executor.

Different banks have different forms and requirements. Call ahead and ask what documents they need. Some banks are more experienced with fiduciary accounts than others, and a bank that handles them regularly can move faster and answer your questions more clearly.

What happens when the fiduciary account ends

A custodial account ends when the beneficiary reaches the age of majority (usually 18 or 21, depending on your state). The account automatically becomes the beneficiary's to control. The fiduciary's job is done. If there is money left, it belongs to the beneficiary.

A guardianship account ends when the guardianship ends — either because the ward dies, recovers enough to manage their own affairs, or the court terminates the guardianship. The fiduciary must account for all remaining money and transfer it according to law or court order.

An account created through a will or trust ends when the trustee or executor has distributed all the money according to the document's instructions. If the beneficiary was supposed to receive the money at a certain age or after a certain event, the account closes once that happens.

Frequently Asked Questions

Can a fiduciary spend money from the account on themselves?

No. The money belongs to the beneficiary, and the fiduciary can only spend it on the beneficiary's needs and expenses. Spending it on yourself is theft, even if you intend to repay it. The only exception is if the court or the beneficiary (once they are old enough) explicitly permits a fee or commission.

What if the fiduciary dies before the beneficiary?

A new fiduciary must be appointed. In a custodial account, the account straightforward transfers to a new custodian named in the original agreement. In a guardianship, the court appoints a successor guardian. In a trust or will, the document usually names a backup trustee or executor. The money stays in the account and continues to be managed for the beneficiary.

Can the beneficiary withdraw money from a fiduciary account before they come of age?

In a custodial account, no — the fiduciary controls the money until the beneficiary reaches the age of majority. In a guardianship account, the ward cannot withdraw money without the guardian's permission. In a trust, it depends on what the trust document says — some trusts allow distributions to the beneficiary before a certain age, others do not.

Do fiduciary accounts earn interest?

Yes, they work like regular bank accounts. They can be savings accounts, money market accounts, or other interest-bearing products. The interest belongs to the beneficiary, not the fiduciary. Some fiduciaries invest the money in stocks or bonds to grow it, but this requires either court permission or the beneficiary's consent, depending on the type of account.

What taxes does a fiduciary account owe?

Interest and investment income from a fiduciary account may be taxable. In a custodial account, the child usually files their own tax return if income exceeds a certain amount. In a guardianship or trust account, the fiduciary may need to file a fiduciary tax return (Form 1041) with the IRS. Ask a tax professional or the bank for guidance based on your specific situation.