To set up a trust fund for your grandchildren, you choose between a revocable and irrevocable trust, pick a trustee and spell out when each grandchild receives money, have an estate planning attorney draft the trust document, sign it before a notary, and then transfer assets into the trust’s name. Most families spend between $1,000 and $6,000 in attorney fees, depending on how complex the plan is. The work breaks into a few clear decisions and a short list of paperwork, and the order matters because each step depends on the one before it.
One point worth settling at the start: a custodial account under the Uniform Transfers to Minors Act is simpler and cheaper, but it hands the full balance to your grandchild at 18 or 21, with no strings. If you want to control the timing or purpose of distributions past that age, only a trust gets you there.
Decide Between a Revocable and Irrevocable Trust
This is the first real decision, and it shapes everything that follows: taxes, creditor protection, and whether you can change your mind later.
A revocable trust lets you amend terms, add or remove beneficiaries, or dissolve the trust entirely while you are alive. The IRS treats the assets as still yours, so trust income goes on your personal return and the assets stay in your taxable estate. When you die, the assets receive a stepped-up cost basis equal to their fair market value at that time, which can meaningfully reduce capital gains tax when your grandchildren later sell. The trust becomes irrevocable at your death, and the trustee then follows the terms you set. The weakness: no protection from your own creditors during your lifetime.
An irrevocable trust cannot be changed or revoked once signed, with narrow exceptions. Because you give up ownership, the assets generally leave your taxable estate and are shielded from your creditors. A spendthrift clause can also keep your grandchildren’s creditors from reaching trust assets before the trustee pays them out. The trade-off is permanence: no taking it back, no new beneficiaries, no revised distribution schedule without court approval or consent from all beneficiaries. Irrevocable trusts also carry their own income tax obligations, covered further down.
If the main goal is long-term asset protection and estate tax planning, the irrevocable trust is usually the fit. If flexibility matters more and the estate tax issue is modest, a revocable trust is often enough.
Choose a Trustee and a Successor
The trustee manages investments, handles tax filings, and decides or executes distributions. You can name an individual, such as an adult child, or a corporate trustee like a bank’s trust department. An individual costs less but may lack investment experience or become unable to serve. A corporate trustee charges an annual fee, often a percentage of trust assets, in exchange for professional management and continuity.
Name a successor trustee in the document itself. Without one, a court has to appoint a replacement if your trustee dies, becomes incapacitated, or resigns, and that gap can stall distributions when your grandchildren need them.
Gather Beneficiary Information and Set the Distribution Terms
Collect the full legal name, date of birth, and Social Security number for each grandchild. Names should match birth certificates or Social Security cards exactly, because small spelling differences can hold up account openings and distributions later. If you want future grandchildren covered, the trust can include an “afterborn” provision rather than listing them by name.
Distribution terms tell the trustee when to pay out. You generally have two tools:
- Discretionary distributions: the trustee decides whether to pay based on the grandchild’s needs, often limited to health, education, maintenance, and support.
- Mandatory distributions: the trust requires specific amounts or percentages at set ages, such as one-third at 25, another third at 30, and the balance at 35.
Many families combine the two. The trustee can pay tuition or medical bills at any time, and the trust also releases set percentages at specified ages. You can tie distributions to milestones like finishing a degree, or restrict payments to education, health care, or a first home purchase. The more specific the language, the less room there is for disputes later.
If You Choose an Irrevocable Trust: Crummey Rights
Annual gifts to an irrevocable trust only qualify for the annual gift tax exclusion if the beneficiary has a “present interest” in the money. A gift that just sits in the trust is a future interest and wouldn’t qualify. The fix is a Crummey withdrawal provision: for a window of at least 30 days after each contribution, the beneficiary (or their parent or guardian, if a minor) can withdraw the newly contributed funds. The trustee has to send a written notice each time explaining the amount and the right to withdraw. Beneficiaries almost never pull the money out, but the window itself is what makes the contribution qualify. Miss the notice, and the exclusion can be lost.
Draft and Sign the Trust Document
The trust agreement, sometimes called a declaration of trust, is the legal instrument that creates the trust and lays out every term you decided above. Given the tax rules, distribution structure, and trustee powers involved in a trust for grandchildren, most families use an estate planning attorney rather than a generic online form.
You sign the finished document in front of a notary public, who verifies your identity, confirms you are signing voluntarily, and applies a seal. Notary fees are usually capped at $5 to $15 per signature, though they can reach $25 to $30 in some states, particularly for remote online notarization. Unlike a will, a trust usually does not require witnesses to be valid, but your attorney may suggest them based on state law or to make the trust harder to challenge later.
Store the original in a fireproof safe or safe deposit box, and give copies to the trustee, any successor trustee, and your attorney so they can act when the time comes.
Fund the Trust by Transferring Assets
A signed trust does nothing until you move assets into it. This step, called funding, changes legal ownership from your name to the trust’s name.
For real estate, prepare a new deed, typically a grant deed or quitclaim deed, naming the trust as owner (for example, “The Smith Family Trust dated January 15, 2026”) and file it with the county recorder. You will pay a recording fee, and some counties charge a transfer tax, so check before filing.
For bank and investment accounts, contact each institution to re-title the account in the trust’s name or open new accounts under the trust. Most banks accept a certification of trust, a short summary that lists the trustee, their powers, and the trust’s taxpayer ID, instead of requiring the full document. That keeps the detailed terms private.
For life insurance, file a change-of-beneficiary form naming the trust as the primary beneficiary. The death benefit then flows into the trust rather than paying out directly to minor grandchildren, which would otherwise require a court-appointed guardian.
An irrevocable trust needs its own federal Employer Identification Number for tax reporting. You can apply online through the IRS and receive the number immediately, or file Form SS-4 by mail or fax.1Internal Revenue Service. Get an Employer Identification Number2Internal Revenue Service. About Form SS-4, Application for Employer Identification Number (EIN) A revocable trust generally uses your Social Security number during your lifetime, since the IRS treats the income as yours.
Attach a written asset list, often called Schedule A, to the trust. Include enough detail to remove any doubt about what belongs to the trust: property addresses and parcel numbers, account numbers and approximate balances, descriptions of vehicles or valuable personal property. Update it when assets go in or out.
Plan for Three Layers of Tax
Trusts for grandchildren sit at the intersection of three federal taxes. Each is worth understanding before you fund the trust, not after.
Gift Tax and the Annual Exclusion
Every contribution to the trust counts as a gift. For 2026, you can give up to $19,000 per beneficiary per year with no gift tax and no use of your lifetime exemption.3Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill A married couple can double that to $38,000 per grandchild. For an irrevocable trust, the Crummey provision above is what unlocks the exclusion.
Generation-Skipping Transfer Tax
Transfers to grandchildren can also trigger the generation-skipping transfer tax, a flat 40% on top of any gift or estate tax.4Office of the Law Revision Counsel. 26 U.S. Code 2601 – Tax Imposed Each person has a GST exemption to offset it. For 2026, that exemption is $15,000,000, the same figure that applies to the federal estate and lifetime gift tax exemption.5Internal Revenue Service. Whats New — Estate and Gift Tax You allocate the exemption to specific transfers on Form 709. Contributions within the $19,000 annual exclusion are automatically GST-exempt and don’t use any lifetime exemption.
Trust Income Tax
An irrevocable trust files its own federal income tax return (Form 1041) if it has gross income of $600 or more.6Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1 Trust brackets are compressed: for 2026, trust income above roughly $16,000 hits the top federal rate of 37%, a threshold an individual would not reach until income runs into the hundreds of thousands. For that reason, trustees often distribute income out to beneficiaries, where it is taxed at their lower individual rate. A revocable trust files no separate return during your lifetime; income flows onto your Form 1040 and the trust is invisible to the IRS for income tax purposes.7Internal Revenue Service. Abusive Trust Tax Evasion Schemes – Questions and Answers
What the Trustee Has to Keep Doing
Setting the trust up is only the first act. Most states that follow the Uniform Trust Code require the trustee to send a written report to current beneficiaries at least once a year (to a parent or guardian if the beneficiary is a minor), with assets and market values, income, expenses, distributions, and trustee compensation. A final report is due when the trust ends. The trust document can modify this, for example by waiving reports while grandchildren are minors, but annual reporting is the default.
The trustee also has to file the trust’s tax return when required, invest the assets prudently, keep trust property separate from personal property, and treat beneficiaries fairly. When several grandchildren are involved, the trustee has to balance those who want distributions now against those who depend on the trust holding its value for years. Falling short of these duties can mean personal liability, which is one reason families with substantial assets or multi-decade trusts often pick a corporate trustee.