A discretionary trust is an estate planning arrangement in which the trustee decides when, how much, and whether to distribute income or principal to a defined class of beneficiaries. The trust document names who may receive distributions, but it leaves the actual choices to the trustee’s judgment. Beneficiaries can hope for a payment; they cannot demand one. That single feature, trustee discretion over distributions, is what the whole structure is built around, and it drives the tax treatment, the creditor protection, and the reasons families use these trusts in the first place.
How It Differs From a Fixed Trust
In a fixed trust, the document spells out who gets what and when. If it says pay $2,000 a month to a daughter, the trustee writes the check whether she needs it or not. The beneficiary has a defined, enforceable right.
A discretionary trust flips that. The trustee might pay one beneficiary generously in a year they face medical bills and pay another beneficiary nothing. Beneficiaries hold what trust law calls a “mere expectancy” rather than an enforceable right. Many real-world trusts sit in between: a trustee may be required to pay out all income every year while retaining discretion over principal. The discretionary label applies whenever the trustee has meaningful latitude over at least some distributions.
The People Involved
Three roles appear in every discretionary trust, though one person sometimes fills more than one.
The grantor (also called the settlor or trustor) creates the trust, transfers assets into it, and sets the rules. In a revocable trust, the grantor can change terms or dissolve the trust during their lifetime. In an irrevocable trust, those assets are generally gone for good.
The trustee holds legal title to the trust property and manages it for the beneficiaries. As the IRS puts it, “the trustee is the legal owner of the property but must use it for the benefit of the beneficiaries.”1Internal Revenue Service. Trusts: Common Law and IRC 501(c)(3) and 4947 Fiduciary duties of loyalty, care, good faith, and impartiality constrain what the trustee can do with that title.
The beneficiaries are the people or entities who may receive distributions. The trust document often names a broad class: children, grandchildren, and sometimes descendants not yet born. The trustee picks among them based on circumstances the grantor could not predict when the trust was drafted. A beneficiary of a discretionary trust cannot demand payment or compel any specific distribution.
How the Trustee Decides
The trustee’s distribution power typically covers both income (interest, dividends, rents) and principal (the underlying assets). When weighing a distribution, trustees look at each beneficiary’s financial situation, health needs, other resources, and the long-term sustainability of the trust.
Discretion has limits, even when it looks absolute on paper. Language like “sole,” “absolute,” or “uncontrolled” discretion does not let a trustee act arbitrarily or ignore the grantor’s intent. A trustee must still exercise discretionary power in good faith and in accordance with the trust’s terms and purposes. A trustee who hoards assets for no reason, plays favorites without justification, or makes distributions that clearly contradict the trust’s purpose can be held liable.
The Letter of Wishes
Many grantors supplement the trust document with a letter of wishes. This is an informal document explaining the grantor’s preferences without creating binding obligations. A letter might ask the trustee to cover a grandchild’s private school tuition, or to hold back large distributions to a son until he completes a substance abuse program. The trustee should take these wishes seriously, but a court will not enforce the letter the way it enforces the trust itself. The letter fills the gap between “do whatever you think is best” and “here’s what I actually had in mind.”
Revocable or Irrevocable
A discretionary trust can be either revocable or irrevocable, and the choice has major consequences.
A revocable discretionary trust lets the grantor change terms, swap beneficiaries, or dissolve the trust at any time. The tradeoff is that because the grantor keeps control, the assets stay in the grantor’s estate for estate tax purposes, income gets reported on the grantor’s personal return, and the trust provides no protection from the grantor’s creditors. Most revocable trusts become irrevocable at the grantor’s death and gain some of those protections then.
An irrevocable discretionary trust means the grantor permanently gives up ownership and control. The trust becomes a separate legal entity for tax purposes, files its own return, and can shelter assets from estate taxes and from the grantor’s creditors. The price is permanence. If circumstances change, the grantor generally cannot reclaim the assets or rewrite the rules.
How a Discretionary Trust Is Taxed
Taxation depends on whether the trust qualifies as a grantor trust or a non-grantor trust under federal law.
Grantor Trusts
If the grantor retains certain powers or benefits, the IRS treats the trust as a grantor trust and taxes all income directly to the grantor. The trust essentially does not exist for income tax purposes. When a grantor is treated as owner of any portion of a trust, that portion’s income, deductions, and credits are included on the grantor’s personal return.2Office of the Law Revision Counsel. 26 USC 671 – Trust Income, Deductions, and Credits Attributable to Grantors and Others as Substantial Owners All revocable trusts are grantor trusts. Some irrevocable trusts also qualify if the grantor keeps specific powers described in Internal Revenue Code Sections 671 through 679.
Non-Grantor Trusts
When the grantor has no retained powers, the trust is a separate taxpayer. This is where the math turns painful. Trusts hit the top federal income tax bracket far faster than individuals. For 2026, the bracket structure is:
- 10% on taxable income up to $3,300
- 24% from $3,300 to $11,700
- 35% from $11,700 to $16,000
- 37% on income over $16,000
A trust reaches the 37% rate at just $16,000 of taxable income.3Internal Revenue Service. Revenue Procedure 2025-32 An individual taxpayer would not hit that rate until well over $600,000. Trusts also face the 3.8% net investment income tax on undistributed investment income once adjusted gross income exceeds the top-bracket threshold, which is also $16,000 for 2026.4Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
Distributable Net Income
The tax code gives trusts a deduction for income distributed to beneficiaries. The governing concept is distributable net income (DNI), which limits the deduction the trust can claim and determines how much of a distribution is taxable to the beneficiary.5eCFR. 26 CFR 1.643(a)-0 – Distributable Net Income; Deduction for Distributions When a trustee distributes income, the trust deducts it and the beneficiary reports it on their personal return. Since most beneficiaries sit in lower brackets than the trust, this shifting produces real savings.
That creates a tension unique to discretionary trusts. The trustee has full authority to accumulate income inside the trust, but doing so triggers the compressed tax rates. Trustees have to weigh the tax cost of accumulation against the grantor’s goals. Sometimes protecting a beneficiary from receiving too much money at once is worth the extra tax.
Filing
A domestic non-grantor trust must file IRS Form 1041 if it has any taxable income or gross income of $600 or more, regardless of taxable income.6Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1 If the trust expects to owe $1,000 or more after withholding and credits, the trustee must also make quarterly estimated payments on Form 1041-ES.7Internal Revenue Service. 2026 Form 1041-ES – Estimated Income Tax for Estates and Trusts
Protection From Beneficiaries’ Creditors
One of the main reasons families use discretionary trusts is to keep assets out of reach of a beneficiary’s creditors. Because a discretionary beneficiary has no enforceable right to distributions, a creditor generally cannot step into the beneficiary’s shoes and force the trustee to pay. The creditor gets no more than the beneficiary has, and the beneficiary’s right is only to be considered.
That protection strengthens when the trust includes a spendthrift provision, a clause that prohibits beneficiaries from transferring or pledging their interest and blocks creditors from attaching the interest before the trustee actually makes a distribution. Most well-drafted discretionary trusts include one. The combination of trustee discretion and a spendthrift clause creates a two-layer shield: even if a creditor overcame the spendthrift provision, the trustee can simply choose not to distribute to the beneficiary who owes the debt.
The shield is not absolute. Most states recognize “exception creditors” who can reach trust assets despite a spendthrift provision. Common examples include a beneficiary’s child or former spouse with a court order for child support or alimony, someone who provided services to protect the beneficiary’s interest in the trust, and government claims including tax debts. The specific exceptions vary significantly by state.
Asset protection also works best when the trust is created by someone other than the beneficiary. If you create a trust for your own benefit, most states let your creditors reach the trust assets regardless of any spendthrift provision. A handful of states have adopted domestic asset protection trust statutes that allow self-settled spendthrift trusts, but these remain a specialized planning tool.
What People Use Discretionary Trusts For
Multi-Generational Wealth Transfer
Discretionary trusts are the backbone of multi-generational estate planning. A grandparent can set up a trust that serves children, grandchildren, and descendants not yet born, with the trustee adapting distributions to each generation’s needs. A trust created in 2026 might fund a grandchild’s education in 2045 and a great-grandchild’s first home purchase in 2075 under the same original document.
Protecting Vulnerable Beneficiaries
These trusts are often used for beneficiaries who cannot manage money well, whether because of age, addiction, financial immaturity, or disability. The trustee controls the flow of funds, preventing a young heir from burning through an inheritance or an individual with substance abuse issues from financing destructive behavior.
For beneficiaries with disabilities, a properly structured discretionary trust can preserve eligibility for government benefits like Medicaid and Supplemental Security Income. Because the beneficiary does not own the trust assets and cannot demand distributions, the trust generally is not counted as a resource for benefits eligibility. The trustee supplements government benefits rather than replacing them. These arrangements, often called special needs or supplemental needs trusts, have specific drafting requirements that an attorney experienced in disability planning should handle.
Shielding Against Divorce and Lawsuits
Parents sometimes use discretionary trusts to protect an inheritance from risks their children might face later. Because the beneficiary has no vested interest in the trust assets, those assets are harder for a divorcing spouse or judgment creditor to claim than assets the beneficiary owns outright.
Picking a Trustee
Trustee selection is arguably the most consequential decision in setting up a discretionary trust, because the whole structure depends on someone exercising good judgment over time.
Individual trustees, like a family member or trusted friend, often understand the family’s dynamics and values better than any institution could. They may lack investment expertise, though, and can struggle with the emotional weight of saying no to a relative. They also may need to hire attorneys, accountants, and investment advisors to do the job properly.
Corporate trustees, like banks and trust companies, bring professional management, regulatory oversight, and continuity. An institution will not become incapacitated, die, or get pulled into family conflict. The cost is typically an annual fee based on the value of trust assets, often in the range of 0.25% to 1.5% depending on the institution and the complexity of the trust. Some grantors split the difference by naming a corporate trustee alongside a family member as co-trustee, pairing professional competence with personal knowledge of the beneficiaries.
When Beneficiaries Think the Trustee Has Gone Too Far
Broad discretion is not a license to act in bad faith. Beneficiaries who believe a trustee has breached their duties can go to court. Available remedies include compelling the trustee to perform their duties, ordering the trustee to restore losses caused by the breach, reducing or eliminating the trustee’s compensation, and removing the trustee entirely.
Common grounds for removal include a serious breach of trust, persistent failure to administer the trust effectively, unfitness or unwillingness to serve, hostility among co-trustees that impairs administration, and a substantial change of circumstances. About 35 states have adopted some version of the Uniform Trust Code, which provides a standardized framework for these remedies. Other states reach similar results through their own statutes and case law.
The practical challenge is proving the trustee actually abused their discretion rather than making a decision the beneficiary dislikes. Courts are reluctant to second-guess distribution choices unless the trustee acted dishonestly, ignored relevant information, or made decisions no reasonable trustee would make. Being unhappy with the size of a distribution is not, by itself, enough to win a lawsuit.
How Long the Trust Can Last
Traditional trust law capped duration through the rule against perpetuities, which generally allowed a trust to run for the lifetime of a living person plus 21 years. That meant roughly two generations beyond the grantor.
Modern law has loosened these limits. Many states now permit trusts to last 360, 500, or 1,000 years, and several have abolished the rule entirely, allowing trusts to continue indefinitely. These “dynasty trusts” appeal to families looking to shelter wealth across many generations. The trust document should name the jurisdiction whose law governs duration, since the rules differ sharply from state to state.
What It Costs
Setting up a discretionary trust involves attorney fees for drafting, which vary widely with complexity. A straightforward discretionary trust inside a comprehensive estate plan might cost a few thousand dollars in legal fees. A complex multi-generational trust with tax planning provisions can run significantly more. The drafting cost is one-time, but it is worth investing in an experienced trusts and estates attorney. A poorly drafted trust can create ambiguities that lead to litigation costing far more than the initial savings.
Ongoing costs include trustee compensation, tax preparation for Form 1041, investment management fees if the trust holds a portfolio, and periodic legal advice. Corporate trustees bundle many of these services into their annual fee. Individual trustees may charge less but incur separate professional expenses. For a trust meant to last decades, these yearly costs compound and belong in the decision about how much to put into the trust in the first place.