What Is a Trust Fund? Types, Taxes, and Setup

A trust fund is a legal arrangement in which one person transfers property to a trustee, who manages it under written instructions for the benefit of someone else. The person who sets it up decides what goes in, who runs it, who receives from it, and on what terms. The trustee is legally bound to follow those instructions and to act in the beneficiaries’ interests, a duty the law calls fiduciary duty. People use trust funds to protect wealth, keep assets out of the court-supervised probate process, reduce taxes, and control exactly how and when the people they care about receive money or property.

The Three Roles That Make a Trust Fund Work

Every trust fund involves three positions, and understanding them is the whole foundation.

The grantor is the person who creates the trust and puts assets into it. You may also see this person called a settlor or trustor. All three terms mean the same thing.
The trustee is the person or institution responsible for managing the assets and following the grantor’s written instructions. A trustee can be a family member, a friend, a bank, or a professional trust company.
The beneficiary is the person or group who receives the benefits, whether that means regular income, lump-sum payments, or the right to use trust property like a home.

One person can fill more than one role. It is common with a revocable trust for the grantor to also serve as the initial trustee, managing the property during their lifetime and naming a successor trustee to take over at death or incapacity.

Naming at least one successor trustee matters. Without one, a court may need to appoint a replacement, which adds delay and cost. If a trust is designed to last for decades, such as one supporting a young child into adulthood, naming a professional trust company as a backup successor keeps the arrangement running even if the individual successors are no longer available.

What You Can Put Into a Trust Fund

Almost anything with monetary value can go into a trust. The common categories include:

Cash and bank accounts: savings, checking, and certificates of deposit are the simplest to transfer.
Real estate: homes, rental properties, and commercial buildings. Transferring real estate requires filing a new deed with the local county recorder’s office.
Investments: stocks, bonds, mutual funds, and brokerage accounts.
Business interests: ownership shares in a family business, limited liability company, or partnership.
Life insurance policies: placing a policy inside an irrevocable life insurance trust can keep the death benefit out of the grantor’s taxable estate.
Personal property: fine art, jewelry, vehicles, and intellectual property rights like patents or royalties.

That range is what lets a grantor consolidate most of their financial life into a single managed structure.

Revocable vs. Irrevocable: The Choice That Defines the Trust

Trust funds split into two broad categories based on whether the grantor keeps control after creating them. This single choice drives the tax treatment, the creditor exposure, and your ability to make changes later.

Revocable Trusts

A revocable trust lets the grantor change the terms, add or remove property, swap beneficiaries, or dissolve the trust entirely at any time. Because the grantor keeps that control, the law treats the grantor and the trust as the same person for tax purposes. The trust’s income is reported on the grantor’s personal tax return rather than on a separate trust return.¹

The main advantage is avoiding probate. When the grantor dies, assets inside the trust pass directly to beneficiaries without going through court, saving time and legal fees. The tradeoff is that a revocable trust gives no protection from the grantor’s creditors during the grantor’s lifetime. Because you still control the assets, anyone you owe money to can reach them as if they were in your own name. The trust also does not reduce your estate for estate tax purposes while you are alive.

Irrevocable Trusts

An irrevocable trust generally cannot be changed or canceled once the grantor signs it and transfers the property. By giving up control, the grantor removes those assets from personal ownership. The trust becomes its own legal entity with its own tax identification number and its own tax return.

That permanent separation produces the main benefits. Assets inside an irrevocable trust are typically shielded from the grantor’s personal creditors, and they are not counted as part of the grantor’s estate for estate tax purposes. The cost is flexibility: once you move property in, you generally cannot take it back or change how it will be distributed.

Specialized Trusts Built on the Irrevocable Model

Several widely used trust types are variations of the irrevocable structure, each tailored to a specific goal:

A special needs trust provides for a person with a disability without disqualifying them from government benefits like Medicaid or Supplemental Security Income. The trustee pays for expenses that public benefits do not cover, such as personal care, recreation, or specialized equipment.
A spendthrift trust prevents beneficiaries from pledging, selling, or giving away their interest before they actually receive a distribution. It also blocks the beneficiary’s creditors from reaching trust assets before the money is in the beneficiary’s hands.
An irrevocable life insurance trust (ILIT) owns a life insurance policy so the death benefit sits outside the grantor’s estate for estate tax purposes.
A charitable trust directs assets to a charity during the grantor’s lifetime or after death, often producing income tax deductions or reducing estate taxes.

How Beneficiaries Actually Receive the Money

The grantor’s written instructions control when and how beneficiaries receive anything. Those instructions tend to follow a few recognizable patterns.

Age-Based and Milestone Distributions

Many trusts release funds in stages tied to a beneficiary’s age. A common setup pays out one-third of the trust at 25, half of the remainder at 30, and the rest at 35. This gives younger beneficiaries time to develop financial maturity before the full amount lands. Some trusts tie distributions to events like graduating from college, buying a first home, or marrying, though linking money to specific achievements can create unintended pressure.

Discretionary Distributions

Instead of a fixed schedule, some trusts give the trustee broad discretion to decide when a beneficiary needs money and how much to release. The trustee weighs the beneficiary’s finances, current needs, and other resources before releasing funds. This approach is flexible but puts a lot of weight on the trustee’s judgment.

The HEMS Standard

A middle ground between a rigid schedule and open discretion is the HEMS standard, which limits distributions to a beneficiary’s health, education, maintenance, and support needs. HEMS is one of the most widely used standards in trust planning. The IRS considers it an “ascertainable standard,” meaning the trustee’s power to distribute under those guidelines is specific enough that it does not create additional tax problems for the beneficiary.² In practice HEMS covers a broad range of expenses, from medical bills and tuition to housing and daily living costs, while keeping the beneficiary from treating the trust like a personal checking account.

Mandatory Distributions

Some trusts require the trustee to make regular payments regardless of the beneficiary’s circumstances, such as a fixed monthly amount for living expenses or health insurance premiums. The trustee has no discretion to withhold them as long as the trust has sufficient funds.

How Trust Funds Are Taxed

Trust taxation catches a lot of people off guard, because the rules shift dramatically depending on the type of trust.

Revocable (Grantor) Trusts

Because the grantor keeps the power to revoke, the IRS treats trust income as the grantor’s personal income.¹ The trust does not file its own return or pay its own taxes. All interest, dividends, capital gains, and other income earned by trust assets go on the grantor’s individual Form 1040. From a tax standpoint, creating a revocable trust changes nothing about your annual bill.

Irrevocable (Non-Grantor) Trusts

An irrevocable trust where the grantor has given up control is treated as a separate taxpayer.³ The trustee must file IRS Form 1041 if the trust earns $600 or more in gross income during the year.⁴ The trust pays income tax on anything it keeps, and beneficiaries pay tax on anything distributed to them.

Here is the detail that surprises people: trust tax brackets are extremely compressed compared with individual brackets. For 2026, a non-grantor trust hits the top federal rate of 37 percent once its taxable income exceeds just $16,000.⁵ An individual does not hit that bracket until income is far higher. The 2026 trust brackets are:

10 percent on the first $3,300 of taxable income
24 percent on income between $3,300 and $11,700
35 percent on income between $11,700 and $16,000
37 percent on income above $16,000

Because of those compressed brackets, trustees often distribute income to beneficiaries rather than accumulating it inside the trust, since beneficiaries in lower individual brackets pay less on the same income.⁵

Gift and Estate Tax

Transferring assets into a trust can trigger gift tax rules. For 2026, you can give up to $19,000 per recipient per year without filing a gift tax return. Transfers above that threshold count against your lifetime estate and gift tax exemption, which for 2026 is $15,000,000 per individual.⁶ Most people will never owe federal estate tax at that exemption level, but the number can change with future legislation, so timing matters.

Setting Up a Trust Fund

Creating a trust fund has two parts: drafting the legal document and actually moving assets into it. Skipping the second step is one of the most common and expensive mistakes people make.

Drafting the Document

The trust document names the grantor, trustee, and beneficiaries, lists the assets going in, spells out how and when beneficiaries receive distributions, names a successor trustee, and specifies whether the trust is revocable or irrevocable. To prepare it, the grantor needs:

Full legal names, addresses, and Social Security numbers for the grantor, trustee, and all beneficiaries
A complete inventory of assets to be transferred into the trust, often attached as a schedule
Clear instructions on how assets should be divided, whether by percentage, specific dollar amounts, or specific items
The name of at least one successor trustee

Most people hire an attorney. Fees for a basic revocable living trust typically run from roughly $1,000 to $4,000 depending on location and complexity. More complex trusts for larger estates can run $5,000 or more. Online services offer templates for less, but a template may not account for your state’s specific requirements or unusual family circumstances.

Signing and Notarizing

The grantor signs the document, typically in front of a notary public who verifies identity. Notary fees for an acknowledgment vary by state, generally $2 to $25 per signature. Some states also require witnesses. Once signed and notarized, the document is legally valid, but it does not yet control any property.

Funding the Trust

Funding is the act of transferring ownership of assets from the grantor’s name into the trust’s name. Until this happens, the trust is an empty document with no authority over your property. Assets never transferred into the trust will likely pass through probate when the grantor dies, which is exactly what most trusts are built to avoid.

Funding usually involves:

Bank accounts: contacting each bank to retitle them in the trust’s name, for example changing “Jane Smith” to “Jane Smith, Trustee of the Jane Smith Revocable Trust.” Banks may charge a small processing fee.
Real estate: filing a new deed with the county recorder’s office transferring ownership to the trust. Recording fees vary by county, typically $10 to $75.
Investment accounts: working with your brokerage to re-register accounts in the trust’s name.
Life insurance: changing the policy’s owner and beneficiary designation to the trust, which is especially important for an ILIT.

Once the document is signed and the assets are actually retitled, the trust fund is doing its job: a separate structure, with a named manager, operating under instructions you chose, for the people you chose.

1
Office of the Law Revision Counsel. 26 U.S. Code 676 – Power to Revoke
2
Office of the Law Revision Counsel. 26 USC 2503 – Taxable Gifts
3
Office of the Law Revision Counsel. 26 U.S. Code 641 – Imposition of Tax
4
Internal Revenue Service. 2025 Instructions for Form 1041 and Schedules A, B, G, J, and K-1
5
Internal Revenue Service. 2026 Tax Rate Schedule for Estates and Trusts – Form 1041-ES
6
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026