If a simple trust does not distribute income as its governing instrument requires, the beneficiaries are still taxed on that income as though they had received it, and the trustee has breached a core fiduciary duty and can be held personally liable. Federal tax law looks at what the trust document mandates, not at whether the trustee actually cut the checks. The result is a beneficiary who owes tax on money still sitting in the trust account, and a trustee exposed to court-ordered distribution, personal surcharge, and possible removal.
The Tax Follows the Trust Document, Not the Trustee
The controlling rule is counterintuitive but unambiguous. Treasury regulations define a simple trust as one that “is required to distribute all its income currently and makes no other distributions, whether or not distributions of current income are in fact made.”1eCFR. 26 CFR 1.651(a)-1 – Simple Trusts; Deduction for Distributions If the instrument says the trustee shall distribute all income each year, the trust keeps its simple-trust status even when the trustee holds onto the money.
Two statutes drive this result. Under IRC Section 651, the trust gets a distribution deduction for income it was required to distribute currently, not for the amount actually paid.2eCFR. 26 CFR 1.651(a)-1 Section 652 then requires beneficiaries to include that income in gross income “whether distributed or not.”3Office of the Law Revision Counsel. 26 USC 652 – Inclusion of Amounts in Gross Income of Beneficiaries of Trusts Distributing Current Income Only The trust files Form 1041 and claims its deduction, the beneficiaries receive Schedule K-1s showing their share of distributable net income, and the IRS processes the return the same way it would if the money had moved on December 31.
Phantom Income: The Beneficiary’s Immediate Problem
The practical harm lands on the beneficiary first. The K-1 arrives, the income goes on the personal return, and the IRS expects payment even though the trust never made the distribution. This is often called phantom income.
A beneficiary in this position may have to pull from personal savings to cover the tax. If the amounts are significant, estimated-tax penalties can apply, because there was no way to plan for phantom income from a trust that was supposed to be paying out during the year. When several beneficiaries are affected, each owes tax on a pro rata share of distributable net income they never touched.
There is a straightforward legal remedy: petition a court to compel the distribution. Because the instrument already mandates it, this is usually a formality rather than a contested proceeding. The time and legal fees involved, however, are recoverable losses that become part of a claim against the trustee.
The 65-Day Rule Can Rescue a Missed Deadline
A trustee who realizes the required distribution never went out has a short window to fix it. IRC Section 663(b) lets a fiduciary elect to treat distributions made within the first 65 days of the following tax year as if they were made on the last day of the prior year.4Office of the Law Revision Counsel. 26 USC 663 – Special Rules Applicable to Sections 661 and 662 A payment made by early March can be pulled back into the prior year for tax purposes.
The election is made on the trust’s income tax return for the year in question and is due no later than the filing deadline, including extensions.5eCFR. 26 CFR 1.663(b)-1 – Distributions in First 65 Days of Taxable Year The amount pulled back cannot exceed the greater of the trust’s fiduciary accounting income or its distributable net income for the year, reduced by amounts already distributed or required to be distributed.
For a genuine simple trust, the election mostly cleans up cash flow rather than the tax picture, since the beneficiary is already carrying the tax bill. But if the trust’s status turns out to be complex, or is unclear, the 65-day election can keep income from being trapped at the trust level.
When the Trust Itself Gets Stuck With the Tax
The “required to be distributed” doctrine only protects trusts whose documents genuinely mandate current distribution. If the instrument gives the trustee discretion over whether or when to distribute, the trust is complex, and retained income sits on the trust’s own return with no offsetting deduction.
This distinction is easier to misread than it looks. Some documents pair mandatory-sounding language with conditions, exceptions, or discretionary carve-outs that undercut the mandate. If the IRS concludes the instrument does not truly require current distribution, the trust is complex for that year, and its income is taxed at the entity level.
Even in a real simple trust, some income never passes through to beneficiaries. Capital gains are typically allocated to principal under state fiduciary accounting rules and the trust instrument, and stay on the trust’s return. A trust can have substantial taxable capital gains while only a smaller slice of accounting income — interest, dividends, rents — must be distributed. Anything properly classified as principal is taxed at the trust level even when the trust qualifies as simple.
Why That Matters: Compressed Brackets
Income taxed at the trust level reaches the highest marginal rates almost immediately. For 2026, a trust hits the top 37% bracket at just $16,000 of taxable income.6Internal Revenue Service. Revenue Procedure 2025-32 A married couple filing jointly does not reach that rate until taxable income exceeds $626,350. This compressed schedule is the main reason the tax code pressures trusts to distribute.
The Net Investment Income Tax
On top of ordinary income tax, trusts that retain investment income may owe the 3.8% Net Investment Income Tax. For trusts, NIIT applies to the lesser of undistributed net investment income or the excess of the trust’s adjusted gross income over the threshold where the top bracket begins — $16,000 in 2026.7Internal Revenue Service. 2026 Form 1041-ES – Estimated Income Tax for Estates and Trusts An individual does not face NIIT until modified adjusted gross income exceeds $200,000, or $250,000 for a married couple filing jointly. Distributing investment income moves the calculation from the trust’s low threshold to the beneficiary’s much higher one, and often wipes out the tax entirely.
The combined bite at the trust level can reach 40.8% on every dollar above $16,000. That same dollar in a middle-income beneficiary’s hands might be taxed at 24% with no NIIT exposure at all. The gap between those two outcomes is where the real financial damage sits when required distributions do not happen.
What Beneficiaries Can Do About It
A trustee who fails to distribute required income has breached a fundamental fiduciary duty. The instrument says to distribute; the trustee did not. The beneficiary does not need to prove bad faith. Ignoring the express terms of the trust is enough.
Compelled Distribution
The most direct remedy is a court order forcing the trustee to distribute the accumulated income now. Because the instrument already requires it, the bar for this order is low. The court is enforcing what the trust already says. Legal fees the beneficiary incurred to obtain the order can be charged to the trustee personally, since those costs came from the failure to perform a mandatory duty.
Surcharge for Losses
Beneficiaries can also seek a surcharge, a court order requiring the trustee to reimburse the trust from personal funds for losses caused by the breach. In this context, surcharge covers the difference between tax paid at compressed trust rates and what the beneficiary would have owed at individual rates, plus penalties, interest, and professional fees to correct returns. The money comes out of the trustee’s own pocket, not the trust’s assets.
Removal
A persistent failure to follow distribution requirements can justify removing the trustee. Most states with provisions modeled on the Uniform Trust Code allow removal for a serious breach of trust or for a persistent failure to administer the trust effectively. A single missed distribution corrected promptly may not warrant removal; repeated failures or outright refusal usually will. Mandatory distribution is the defining feature of a simple trust, and courts treat it accordingly.
Exculpatory Clauses Have Limits
Some trust documents include clauses meant to shield the trustee from liability for administrative errors. In most states that have adopted versions of the Uniform Trust Code, such a clause is unenforceable to the extent it excuses a breach committed in bad faith or with reckless indifference to the trust’s purposes or the beneficiaries’ interests. Repeatedly missing a mandatory distribution can cross from negligence into reckless indifference, which strips away the contractual protection the document might otherwise provide.
If You Are the Trustee
Distribute the income now. Every day of delay extends the breach and increases the beneficiary’s potential damages. If you are still inside the first 65 days of the following year, make the Section 663(b) election on the trust’s return to pull the payment back into the prior year. Then bring in a tax professional to review Form 1041 and confirm the return reflects the trust’s status and the distribution deduction correctly. Corrections to prior-year returns push those fees higher, but not correcting them is worse.
If You Are the Beneficiary
Read the K-1 carefully. You are likely being taxed on income you never received. Document the date the distribution was due, when or whether it was actually paid, and every out-of-pocket cost you incurred because of the delay. That record is the foundation of any claim against the trustee, whether by informal demand or court petition. The statute of limitations for breach-of-trust claims varies by state, and in many jurisdictions it starts running when the beneficiary receives a trust report that discloses the potential claim. Moving quickly keeps every option on the table.