A U.S. trust that distributes income to a nonresident alien beneficiary generally must withhold 30% on U.S.-source passive income before the money leaves the trust, unless a tax treaty lowers the rate. The nonresident alien trust beneficiary tax picture then has two sides: what the trustee collects and reports, and what the beneficiary files to reconcile that withholding, claim treaty benefits, or request a refund. The type of income, the type of trust, and the beneficiary’s country of residence all shape the final number.
How the Distribution Is Taxed
U.S. tax attaches only to U.S.-source income. Foreign-source income earned by a domestic trust and passed through to a foreign beneficiary generally falls outside the U.S. tax net. Within the U.S.-source portion, the category of income drives everything else.
FDAP Income
Fixed, determinable, annual, or periodical income covers the passive earnings that make up most trust distributions: interest, dividends, rents, and royalties not tied to a U.S. business. The IRS taxes FDAP at a flat 30% of the gross amount, with no deductions permitted.1Internal Revenue Service. Fixed, Determinable, Annual, or Periodical (FDAP) Income The tax comes off before the beneficiary receives anything, because the trustee is required to withhold at the source.2Office of the Law Revision Counsel. 26 USC 1441 – Withholding of Tax on Nonresident Aliens
Effectively Connected Income
When the trust operates a U.S. business, the beneficiary’s share of that business income is effectively connected income. It is taxed at the same graduated rates that apply to U.S. citizens, and deductions are allowed against it.3Internal Revenue Service. Effectively Connected Income (ECI) The same dollar amount can produce very different tax bills depending on whether it arrives as FDAP or as ECI.
Capital Gains
Capital gains on non-business assets are generally not taxable to a nonresident alien beneficiary unless the beneficiary was physically present in the United States for 183 days or more during the tax year. A beneficiary who crosses that threshold owes 30% on net U.S.-source capital gains.4Office of the Law Revision Counsel. 26 USC 871 – Tax on Nonresident Alien Individuals For most nonresident beneficiaries who spend limited time in the country, capital gains distributions pass through untaxed at the federal level.
Portfolio Interest
Interest that qualifies as portfolio interest escapes withholding entirely. To qualify, the debt obligation must be in registered form, the beneficiary must not own 10% or more of the voting stock of a corporate issuer (or 10% of the capital or profits of a partnership issuer), and the withholding agent must have a statement confirming the beneficial owner is not a U.S. person.4Office of the Law Revision Counsel. 26 USC 871 – Tax on Nonresident Alien Individuals Where a trust holds a substantial bond portfolio, this exemption can materially reduce the tax bill.
Grantor Trusts Are Treated Differently
Most of what follows applies to non-grantor trusts. In a grantor trust, the person who funded the trust remains the taxable owner of the income even though someone else receives distributions, and the beneficiary is generally treated as receiving a gift rather than taxable income. A non-grantor trust is a separate tax entity: income keeps its character as it passes through, so FDAP stays FDAP and ECI stays ECI. The withholding, reporting, and filing obligations discussed below arise from non-grantor trust distributions.
What the Trustee Must Do
The trustee of a domestic trust is the withholding agent. Federal law requires the trustee to deduct and withhold 30% of U.S.-source FDAP income distributed to a nonresident alien beneficiary.2Office of the Law Revision Counsel. 26 USC 1441 – Withholding of Tax on Nonresident Aliens A trustee who fails to withhold is personally liable for the tax that should have been collected,5Office of the Law Revision Counsel. 26 USC 1461 – Liability for Withheld Tax and a willful failure to collect and pay it over adds a penalty equal to 100% of the unpaid amount.6Office of the Law Revision Counsel. 26 USC 6672 – Failure to Collect and Pay Over Tax, or Attempt to Evade or Defeat Tax When in doubt, the safer path is to withhold the full 30% and let the beneficiary claim any refund on a return.
Treaty Rate Reductions
Tax treaties with dozens of countries can reduce the 30% default rate, sometimes to 15%, 10%, or 0%.7Internal Revenue Service. Table 1 – Tax Rates on Income Other Than Personal Service Income Under Chapter 3, Internal Revenue Code, and Income Tax Treaties A reduced rate applies only if the beneficiary has given the trustee a valid Form W-8BEN identifying the treaty article and paragraph that supports it. Without that form, the trustee must withhold at 30%.
Forms 1042 and 1042-S
Each payment gets reported on Form 1042-S, with a separate form for each type of income. Both the IRS copy and the beneficiary copy are due by March 15 of the year after the distribution.8Internal Revenue Service. Instructions for Form 1042-S (2026) The trustee also files Form 1042, the annual return that reconciles total withholding on payments to foreign persons. Deposits of withheld tax go through the Electronic Federal Tax Payment System.9Internal Revenue Service. Electronic Federal Tax Payment System (EFTPS)
Distributions Tied to U.S. Real Estate
Distributions traceable to the sale of U.S. real property follow separate rules under the Foreign Investment in Real Property Tax Act. The trustee must withhold 21% of the gain allocated to the foreign beneficiary,10Office of the Law Revision Counsel. 26 USC 1445 – Withholding of Tax on Dispositions of United States Real Property Interests a rate that replaced the previous 35% for distributions on or after January 1, 2018.11Internal Revenue Service. Definitions of Terms and Procedures Unique to FIRPTA The trustee files Form 8288 with a Form 8288-A for each foreign beneficiary, and the tax must reach the IRS within 20 days of the distribution.12Internal Revenue Service. Instructions for Form 8288 (Rev. January 2026) The IRS stamps the 8288-A and returns it to the beneficiary, who needs the stamped copy to claim credit for the withholding on Form 1040-NR. If the beneficiary does not yet have a taxpayer identification number, the trustee still files, but the stamped copy is held until a number is issued.
What the Beneficiary Must Do
Get an ITIN First
A nonresident alien beneficiary needs an Individual Taxpayer Identification Number before any of the reporting can work properly. The application is Form W-7 and requires proof of both identity and foreign status. A passport is typical, and it must be an original or a certified copy from the issuing agency.13Internal Revenue Service. Instructions for Form W-7 Without an ITIN, the trustee cannot cleanly report withholding, and the beneficiary cannot file a return or receive refunds.
Give the Trustee a W-8BEN
Form W-8BEN certifies foreign status and, when applicable, claims treaty benefits. Line 9 of Part II identifies the treaty country; line 10 lists the article, paragraph, rate, and type of income.14Internal Revenue Service. Form W-8BEN (Rev. October 2021) A W-8BEN expires on December 31 of the third calendar year after signing, so a form signed in 2026 expires December 31, 2029.15Internal Revenue Service. Instructions for Form W-8BEN A change in circumstances, such as moving to a different country, invalidates the form immediately and requires a new one within 30 days. If a W-8BEN lapses, the trustee reverts to 30% withholding until a fresh form is on file.
Read the K-1 and 1042-S
The trust issues a Schedule K-1 (Form 1041) that breaks the beneficiary’s share of income, deductions, and credits into categories: Box 1 for interest, Box 2a for ordinary dividends, and separate boxes for capital gains, rental income, and deductions.16Internal Revenue Service. Instructions for Schedule K-1 (Form 1041) for a Beneficiary Filing Form 1040 or 1040-SR Together with the Form 1042-S showing amounts withheld, these documents drive the beneficiary’s own return. Keep them for at least three years after filing.17Internal Revenue Service. How Long Should I Keep Records
File Form 1040-NR — Usually by June 15
A nonresident alien who does not receive U.S. wages subject to income tax withholding and has no U.S. office or place of business files Form 1040-NR by June 15, not April 15.18Internal Revenue Service. Taxation of Nonresident Aliens Most trust beneficiaries fall into the June 15 group. Form 4868 gives an automatic six-month extension if filed by the original due date, pushing a June 15 deadline to December 15, but the extension covers filing only; interest still runs on unpaid tax from the original date.19Internal Revenue Service. Application for Automatic Extension of Time To File US Individual Income Tax Return (Form 4868)
Form 1040-NR pulls together the beneficiary’s U.S.-source income and credits the amounts already withheld by the trustee. Where withholding exceeds the actual liability — a common outcome when a treaty rate applies but the trustee withheld at 30%, or when portfolio interest was inadvertently withheld on — the return is the mechanism for a refund. International filers not enclosing a payment mail returns to the Department of the Treasury, Internal Revenue Service, Austin, TX 73301-0215.20Internal Revenue Service. International – Where to File Forms 1040-NR, 1040-PR, and 1040-SS Addresses for Taxpayers and Tax Professionals Electronic filing is available through authorized providers. Processing on nonresident returns often runs longer than domestic filings, particularly when a treaty-based refund needs review.
State Taxes Are Separate
Federal withholding is not the whole story. If the trust generates income sourced to a state that imposes its own income tax, the beneficiary may owe state tax on their share and may have a state filing obligation. Rules vary widely: some states tax any dollar of in-state income to a nonresident, some set thresholds, and some have no income tax at all. Beneficiaries of trusts with multi-state assets should check each relevant state’s nonresident filing rules.
Estate Tax Exposure Is Real and the Threshold Is Low
If a nonresident alien beneficiary dies while holding an interest in U.S.-situated trust assets, the estate can owe U.S. estate tax. The filing threshold is just $60,000 in U.S.-situated assets, far below the exemption available to U.S. citizens and residents. U.S.-situated assets include U.S. real estate, tangible personal property in the United States, and stock of U.S. corporations even when certificates are held abroad. Bank deposits, life insurance proceeds on the nonresident’s life, and certain debt obligations are excluded. An estate tax treaty between the United States and the beneficiary’s home country may change which assets are treated as U.S.-situated; the executor files Form 706-NA when a filing is required.21Internal Revenue Service. Some Nonresidents with US Assets Must File Estate Tax Returns