Yes, a trust can earn interest, and most trusts holding any meaningful amount of money do. Whenever a trust owns certificates of deposit, Treasury or corporate bonds, a money market account, or a high-yield savings account, the interest those instruments pay flows into the trust just as it would into any individual’s account. The harder question is who owes tax on that interest, and the answer depends on what kind of trust you have and whether the money stays inside the trust or gets paid out to beneficiaries.
How a Trust Actually Earns Interest
The mechanics are ordinary. The trustee opens accounts and buys investments in the trust’s name, using the trust’s taxpayer identification number. Interest payments post to the trust’s bank or brokerage account. At year end, each institution issues a Form 1099-INT to the trust showing the interest it earned.
Not every dollar of interest is taxed the same way. Interest from corporate bonds, CDs, and savings accounts is fully taxable at the federal level. Interest from municipal bonds is generally exempt from federal income tax, though it can still be subject to state tax or the federal alternative minimum tax in certain situations. The trustee tracks these categories separately because the tax status follows the income wherever it goes.
Who Pays the Tax Depends on the Type of Trust
There are two broad camps: grantor trusts and nongrantor trusts. The difference governs who sends the check to the IRS.
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 the trust earns is reported on your personal Form 1040. The trust files no separate return and often uses the grantor’s Social Security number instead of its own identification number.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 tax purposes, the trust is essentially invisible during the grantor’s lifetime.
Certain irrevocable trusts also fall into this category when the creator retained specific powers listed in the tax code, such as the power to substitute assets of equivalent value or to borrow from the trust without adequate security. Grantor status ends when the creator dies or releases the triggering powers. From that point on, the trust is on its own as a taxpayer.
Nongrantor Trusts: The Trust or the Beneficiary Pays
Once a trust is no longer a grantor trust, it becomes a separate taxable entity and must file Form 1041 each year.2Internal Revenue Service. About Form 1041, U.S. Income Tax Return for Estates and Trusts The concept that decides who pays tax on interest is Distributable Net Income (DNI). DNI caps 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. Anything the trust keeps is taxed to the trust itself.3Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1
Whether the trustee has a choice about distributing depends on the trust document. A simple trust requires that all income be distributed every year and makes no principal distributions or charitable gifts. In a simple trust, interest income is automatically taxable to the beneficiaries, even if the check hasn’t been written yet.4eCFR. 26 CFR 1.651(a)-1 – Simple Trusts; Deduction for Distributions A complex trust may accumulate income, distribute principal, or make charitable gifts. The trustee’s distribution decisions in a complex trust directly determine who writes the tax check.
Why Distributing Interest Usually Saves Tax
Trust tax brackets are brutally compressed. An individual filer doesn’t reach the top 37% federal rate until taxable income climbs well into six figures. A nongrantor trust gets there at just $16,000. The full 2026 bracket schedule for trusts:5Internal Revenue Service. 2026 Form 1041-ES, Estimated Income Tax for Estates and Trusts
- 10% on taxable income up to $3,300
- 24% from $3,301 to $11,700
- 35% from $11,701 to $16,000
- 37% on anything over $16,000
A trust that earns $20,000 of interest and keeps all of it pays dramatically more federal tax than a beneficiary in the 12% or 22% bracket would pay on that same income. The compression is the single biggest reason trustees distribute income whenever the trust document allows it.
There is a second layer. The 3.8% net investment income tax applies to the lesser of a trust’s undistributed net investment income or the amount by which its adjusted gross income exceeds the threshold where the top bracket begins.6Office of the Law Revision Counsel. 26 U.S. Code 1411 – Imposition of Tax For 2026 that threshold is again $16,000. Interest income is net investment income, so a trust retaining interest above $16,000 faces a combined marginal federal rate of 40.8%. Tax-exempt municipal bond interest is excluded from the surtax calculation.7Internal Revenue Service. Questions and Answers on the Net Investment Income Tax Distributing the income to beneficiaries reduces the trust’s undistributed net investment income and can wipe the surtax out entirely.
The 65-Day Lookback for Late Distributions
Trustees often don’t know the final interest figures until well after December 31. The tax code gives complex-trust trustees a buffer: a distribution made within the first 65 days of the new tax year can be treated as if it were made on the last day of the prior year.8Office 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, and once made it can’t be reversed. A February distribution to a beneficiary in a lower bracket can shift thousands of dollars of tax off the trust. Miss the window and the trust pays at its own rates.
What the Trustee Has to File
A calendar-year nongrantor trust files Form 1041 by April 15 of the following year.9Internal Revenue Service. Forms 1041 and 1041-A: When to File If the trust distributed income, the trustee also issues a Schedule K-1 to each beneficiary showing their share of the interest and other income. Beneficiaries pick that up on their personal Form 1040.
If the trust expects to owe $1,000 or more after withholding and credits, the trustee must make quarterly estimated payments on Form 1041-ES. For the 2026 tax year, those are due April 15, June 15, and September 15 of 2026, and January 15 of 2027.5Internal Revenue Service. 2026 Form 1041-ES, Estimated Income Tax for Estates and Trusts The January payment can be skipped if the full return is filed and paid by January 31. Estimated payments catch many trustees off guard in the first year a trust becomes a separate taxpayer, which is typically the year the grantor dies.
Penalties for Missing the Deadline
The IRS charges 5% of unpaid tax for each month a return is late, capped at 25%. If the return is more than 60 days late, the minimum penalty is $525 or 100% of the tax owed, whichever is less.10Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges Reasonable cause can excuse the penalty in some cases, but not knowing the trust had to file generally won’t qualify. If you’ve just taken over as trustee and aren’t sure where the trust stands, filing for an extension is cheaper than guessing wrong.