Yes, a trust can earn interest, and it does so routinely. Any trust holding bonds, certificates of deposit, savings accounts, money market funds, or similar instruments collects interest the same way an individual investor would. The harder question is who owes tax on that interest, and the answer turns on what kind of trust it is and whether the income stays inside the trust or gets paid out to beneficiaries.
How a Trust Earns Interest
The trustee invests trust assets in interest-bearing instruments titled in the trust’s name: Treasury bonds, corporate bonds, CDs, money market accounts, high-yield savings accounts, and the like. Interest payments flow directly into the trust’s bank or brokerage account.
Not every dollar of interest is treated the same at tax time. Interest from corporate bonds and ordinary savings accounts is fully taxable. Interest from municipal bonds is generally exempt from federal income tax, though state tax or the federal alternative minimum tax can still reach it in some situations. The trustee has to track those buckets separately because the tax character carries through to whoever ends up paying.
Who Pays Tax on Trust Interest
The first question isn’t about brackets. It’s about whether the trust is a separate taxpayer at all.
Grantor Trusts: the Creator Pays
If you created a revocable living trust and kept the power to change or revoke it, the IRS treats it as a grantor trust. All interest income the trust earns gets reported on your personal Form 1040, not on any separate trust return.1Office of the Law Revision Counsel. 26 U.S. Code 671 – Trust Income, Deductions, and Credits Attributable to Grantors and Others as Substantial Owners For income tax purposes, the trust is invisible during your lifetime. The same result applies to certain irrevocable trusts where the creator kept specific powers described in the tax code, such as the power to substitute assets or to borrow from the trust without adequate security. In those cases the trust uses the grantor’s Social Security number instead of its own taxpayer ID.
Grantor status ends when the creator dies or gives up the triggering powers. From that point on the trust is a separate taxpayer, needs its own ID number, and files its own return. For most families with a standard revocable living trust, that switch happens at the creator’s death.
Nongrantor Trusts: the Trust or the Beneficiary Pays
Once a trust is a separate taxpayer, it files Form 1041.2Internal Revenue Service. About Form 1041, U.S. Income Tax Return for Estates and Trusts The key concept is Distributable Net Income, or DNI, which sets a ceiling on how much income the trust can pass through to beneficiaries in a given year. Interest income the trust distributes (up to the DNI limit) is taxed to the beneficiary who received it. Interest the trust keeps is taxed to the trust.3Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1
That distinction matters more than it does for individuals, because trust tax brackets are severely compressed.
Trust Tax Brackets Are Steep
An individual filer does not hit the 37% federal rate until income runs well into six figures. A nongrantor trust hits it at just $16,000 of taxable income. The 2026 schedule for trusts:4Internal Revenue Service. 2026 Form 1041-ES, Estimated Income Tax for Estates and Trusts
- 10% on taxable income up to $3,300
- 24% on $3,301 to $11,700
- 35% on $11,701 to $16,000
- 37% on anything over $16,000
A trust that earns $20,000 in interest and distributes none of it pays dramatically more federal tax than a beneficiary in the 12% or 22% bracket would pay on the same amount. This is the single biggest reason trustees push income out to beneficiaries whenever the trust terms allow.
Simple Trusts and Complex Trusts
Whether the trustee has that choice depends on the document. A simple trust is one that requires all income to be distributed each year and makes no distributions of principal or charitable gifts. In a simple trust, interest income is automatically taxable to the beneficiaries, even if the check hasn’t been written yet.5eCFR. 26 CFR 1.651(a)-1 – Simple Trusts; Deduction for Distributions The beneficiary reports it; the trust owes nothing.
A complex trust can accumulate income, distribute principal, or make charitable contributions. The trustee decides each year whether to distribute or retain, and that decision decides who pays the tax. Given the brackets above, discretion usually points toward distribution.
The 65-Day Rule
Trustees of complex trusts often reach year-end without a clean picture of what the trust earned. The tax code allows a buffer: any distribution made within the first 65 days of a new tax year can be treated as if it were made on the last day of the prior year.6Office of the Law Revision Counsel. 26 USC 663 – Special Rules Applicable to Sections 661 and 662 For a calendar-year trust, a distribution made by March 6, 2027, can count against 2026 income.
The trustee makes the election on Form 1041 at filing time, and it cannot be reversed. If a February look at the books shows the trust retained more interest than expected, a distribution to a lower-bracket beneficiary inside the 65-day window can save thousands. Miss it, and the trust pays at its own rates for the prior year.
The 3.8% Net Investment Income Tax
Interest retained in a nongrantor trust can also trigger a 3.8% surtax on net investment income. It applies to the lesser of the trust’s undistributed net investment income or the amount by which its adjusted gross income exceeds the threshold where the top bracket starts.7Office of the Law Revision Counsel. 26 U.S. Code 1411 – Imposition of Tax For 2026 that threshold is $16,000, the same point where the 37% rate begins.
The practical result: a trust holding interest income above $16,000 faces a combined marginal federal rate of 40.8% on the excess. Interest income is net investment income, so it is fully subject to the surtax. Tax-exempt interest from municipal bonds is excluded from the calculation.8Internal Revenue Service. Questions and Answers on the Net Investment Income Tax Distributing income reduces undistributed net investment income and can eliminate the surtax entirely.
Filing and Deadlines for the Trustee
Banks and brokerages issue a Form 1099-INT to the trust after year-end showing interest paid. The trustee uses those to prepare Form 1041. If income went out to beneficiaries, the trustee also issues each beneficiary a Schedule K-1, and the beneficiary reports the interest on their personal 1040.9Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1
A calendar-year trust must file Form 1041 by April 15 of the following year.10Internal Revenue Service. Forms 1041 and 1041-A: When to File 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. For 2026, those payments are due April 15, June 15, and September 15 of 2026, and January 15 of 2027.4Internal Revenue Service. 2026 Form 1041-ES, Estimated Income Tax for Estates and Trusts The January installment can be skipped if the trust files the full return and pays the balance by January 31.
Estimated payments catch many trustees off guard in the first year a trust shifts from grantor reporting to filing its own 1041, usually the year after the grantor’s death. A trust holding a meaningful bond portfolio can cross the $1,000 threshold in a single quarter.