UK Trust Appointments to US Beneficiaries

Appointing capital from a UK discretionary trust to a US beneficiary engages two tax systems at once. The UK may charge inheritance tax on exit and, for assets appointed in specie, capital gains tax. The US taxes the beneficiary on trust income, and on accumulated income under the throwback rules with an interest charge.

Trustees of a UK relevant-property trust usually think about an appointment in UK terms: exit charge, hold-over relief, the powers in the deed. When the beneficiary is a US citizen or green card holder, wherever they live, that is half the analysis. The US ignores whether the trustees called the payment income or capital and looks at the trust's own US-basis income history, so clean UK capital can be taxed in the US as ordinary income, with interest. This guide sets out both sides and the order in which to decide.

Key takeaways

The UK exit charge is a fraction of the trust's rate, scaled by complete quarters since the last ten-year anniversary or since the trust began.
An appointment of assets in specie is a disposal by the trustees at market value for UK capital gains tax. Hold-over relief is generally not available where the beneficiary is not UK resident.
For the US, a UK discretionary trust with UK trustees is a foreign trust, and usually a non-grantor trust once the settlor has died or if the settlor was never a US person.
Distributions carry out current-year distributable net income (DNI) first. Anything above that is an accumulation distribution out of undistributed net income (UNI), taxed under the throwback rules with an interest charge, and capital gains lose their capital character.
Every distribution must be reported on Form 3520, Part III, whether or not tax is due. Without a beneficiary statement from the trustees, the beneficiary is pushed onto the harsher default calculation method.

Does an appointment to a US beneficiary trigger a UK exit charge?

Usually, yes. Property in a relevant-property trust that leaves the trust regime, for example because the trustees appoint it absolutely to a beneficiary, is an occasion of charge under section 65 of the Inheritance Tax Act 1984. HMRC's own guidance lists transfers out of a trust as one of the main points at which inheritance tax on trusts becomes due. The beneficiary's nationality and residence are irrelevant.

The charge is proportionate rather than a fresh lifetime rate:

Before the first ten-year anniversary, the rate is built from a notional transfer equal to the value settled, taking account of the settlor's chargeable transfers before the settlement. If that notional transfer fell within the nil rate band, the rate is nil and so is the exit charge.
After a ten-year anniversary, the rate is the effective rate fixed at the last anniversary charge.
In both cases, that rate is reduced in proportion to the number of complete quarters elapsed since the start or the last anniversary. No charge arises on property leaving within the first quarter after the trust starts or after an anniversary.

If the trustees pay the tax out of property remaining in the trust, the amount appointed is grossed up, so decide early whether the beneficiary or the fund bears it. And the event is reported on account form IHT100 with the relevant event form, with payment due shortly after the month of the appointment, not at the end of the tax year.

Non-UK assets settled by a settlor who was not UK-domiciled may be excluded property; the test changed from April 2025, so check the trust's status rather than assume it.

What UK capital gains tax applies to an appointment in specie?

When a beneficiary becomes absolutely entitled to trust assets, the trustees are treated as disposing of them at market value, so an appointment in specie crystallises their gain although nothing is sold.

Where the appointment is also an occasion of inheritance tax charge, section 260 of the Taxation of Chargeable Gains Act 1992 normally lets the gain be held over into the beneficiary's base cost. The difficulty for this audience is that hold-over is denied where the person receiving the asset is not UK resident. A US-resident beneficiary therefore usually receives the asset with the trustees having paid UK capital gains tax on the way out. A US citizen living in the UK can usually hold over for UK purposes, which is a reason to establish where the beneficiary will be resident in the year of appointment before the deed is signed.

If the trust is in fact non-UK resident, a different regime applies: stockpiled gains are matched to capital payments under section 87, and the matching rules have treated non-resident recipients differently since the 2018 reforms. That needs its own analysis.

How does the US tax a distribution from a UK discretionary trust?

A trust is a US trust only if a US court can exercise primary supervision and US persons control all its substantial decisions. A UK trust with UK trustees fails both tests, so it is a foreign trust. It is a grantor trust only in narrow cases, typically where a non-US settlor can revoke it or only the settlor and spouse can benefit during the settlor's life, or where the settlor is a US person. Our guide to Form 3520 reporting for US persons with UK trusts covers that classification in detail. For the typical family discretionary trust, especially one created by will, the answer is foreign non-grantor.

The US then applies its own accounting, not the trust's UK accounts:

Current-year DNI. For a foreign trust, DNI includes capital gains as well as income. A distribution up to the current year's DNI is taxed to the beneficiary with its character intact, so dividends stay dividends and gains stay gains.
Accumulation distribution. Anything above current DNI is treated as coming out of UNI, the income and gains accumulated in earlier years, starting with the earliest.
Corpus. Only once UNI is exhausted does the distribution come out of capital, tax-free.

Where several beneficiaries receive distributions in the same year, DNI is shared between them, so a payment to a non-US beneficiary in the same year absorbs part of it.

What is the throwback tax and the interest charge?

The throwback rules, in sections 665 to 668 of the Internal Revenue Code, tax an accumulation distribution as if the income had been paid out in the years it was earned. Three features make them punishing:

Character is lost. Accumulated capital gains and qualified dividends are taxed as ordinary income.
An interest charge applies for the period the income sat in the trust, compounding, so a long-accumulating trust can produce interest larger than the tax itself.
The only ceiling is the distribution itself. The tax and interest together cannot exceed the amount distributed, a cap that offers little comfort.

The computation is made on Form 4970 and carried through the beneficiary's Form 3520 and Form 1040.

Default method or actual method: which applies?

Under the actual method, the beneficiary computes DNI and UNI from the trust's real US-basis history. That needs a Foreign Nongrantor Trust Beneficiary Statement from the trustees, which in turn needs the trust's accounts recast on US principles, often for every year since the trust began. UK trustees rarely have this.

Under the default method, no trust information is needed. A portion of the distribution is treated as current income under a formula based on the beneficiary's own distribution history from the trust, and the rest is treated as an accumulation distribution with interest computed over a period tied to how long the trust has existed. It is simpler and usually more expensive, and once a beneficiary uses it for a trust, later years can be locked into it. The Instructions for Form 3520 set out both methods and what the beneficiary statement must contain.

Whichever applies, the distribution must be reported in Part III of Form 3520. Late or missing reports attract penalties calculated by reference to the distribution, independent of any tax due.

How do the options compare?

Option	UK inheritance tax	UK capital gains tax	US income tax for the beneficiary	US reporting
Cash appointment of capital	Exit charge, quarters-based	Only on assets sold to raise the cash	Current DNI first, then throwback on UNI, then tax-free corpus	Form 3520 Part III; Form 4970 if UNI
Appointment in specie (shares, property)	Exit charge on market value	Deemed disposal; hold-over blocked if beneficiary non-UK resident	Same ordering; US basis and amount follow trust basis unless the trustees elect to recognise gain	As above; any PFIC holdings become the beneficiary's
Distribution of current-year income	No exit charge on income paid out as income	None	Taxed as DNI with character kept; no throwback	Form 3520 Part III
Appointment onto a new trust for the US beneficiary	Property generally remains in the original settlement for IHT	Deemed disposal if a separate settlement; hold-over blocked if new trustees non-resident	Existing UNI generally travels with the property; it is not cleansed	Depends on the new trust's status
Retain and wait	Ten-year charges continue	None now	UNI keeps growing; interest period lengthens	None until a distribution

Why does sequencing matter before the year end?

Because the US measures DNI by calendar year and the UK measures quarters from anniversaries, the same appointment can cost very different amounts depending on when it is made.

Distribute current-year income first. A trust that pays out its DNI each year to the US beneficiary never builds UNI. Where an appointment is planned, using up the current year's DNI before 31 December keeps more of it in the cheap bucket.
Use the election under section 663(b) where it helps: trustees can elect to treat distributions made early in the following year as made in the previous year, which tidies up a DNI shortfall.
Watch the quarter boundary and the anniversary. An appointment just inside a new quarter costs more exit charge than one just before it; one made in the first quarter after a ten-year anniversary costs none.
Prefer cash over in specie for a non-resident US beneficiary, unless the asset is pregnant with gain that would be taxed anyway, because hold-over is unavailable and the in-specie route also carries PFIC exposure into the beneficiary's own name.
Look through the portfolio for PFICs. UK OEICs, unit trusts and investment trusts held by the trust are usually passive foreign investment companies, and the US beneficiary is treated as owning them indirectly. Our guide to PFIC rules for US investors abroad explains why trustees with US beneficiaries often move to direct equities.
Get the beneficiary statement before the money moves. Commission the US-basis DNI and UNI analysis first; it decides whether the appointment should happen at all this year.

The reverse situation, a US trust paying a UK-resident beneficiary, raises different issues, covered in our article on a US trust with a UK-resident beneficiary.

What should trustees do first?

Establish the beneficiary's US status and UK residence for the year of appointment, price the exit charge for each candidate date, obtain US-basis DNI and UNI figures, and model the options on both sides at once. Only then draft the deed.

Each side's adviser can do everything right and the family still overpays when the UK deed and the US return are prepared separately. Every position we take is reviewed and signed off by a licensed professional, an IRS Enrolled Agent who is also ACCA-qualified, so the appointment and the Form 3520 come from one analysis. Our US and UK private client tax service handles trustee and beneficiary work together; see pricing for how engagements are scoped, or book a consultation before the trustees meet.

Frequently asked questions

What are the US tax implications of being a beneficiary of a UK trust?+

A UK discretionary trust with UK trustees is a foreign trust for US purposes, and usually a non-grantor trust. A US beneficiary is taxed on distributions to the extent of the trust's current-year distributable net income, keeping its character. Distributions above that come out of accumulated income and are taxed under the throwback rules as ordinary income with an interest charge. Every distribution must also be reported on Form 3520, Part III, even when no tax is due.

What is the throwback tax on foreign trust distributions?+

The throwback tax applies when a foreign non-grantor trust distributes more than its current-year distributable net income to a US beneficiary. The excess is an accumulation distribution, treated as paid out of income accumulated in earlier years. It is taxed as ordinary income, so capital gains lose their capital character, and an interest charge runs for the period the income stayed in the trust. The computation is made on Form 4970, and tax plus interest cannot exceed the distribution itself.

Is there an exit charge when a discretionary trust makes a distribution?+

Usually, when capital leaves a UK relevant-property trust, for example on an appointment absolutely to a beneficiary. The exit charge is a fraction of the trust's inheritance tax rate, scaled by the complete quarters elapsed since the trust began or since its last ten-year anniversary. No charge arises in the first quarter after the start or an anniversary, and before the first anniversary the rate is nil if the original settlement fell within the nil rate band. Income paid out as income is not an exit.

Is holdover relief available on property appointed out of a trust to a non-resident beneficiary?+

Generally not. Section 260 hold-over relief normally allows trustees to defer the gain when assets are appointed out of a relevant-property trust on an occasion of inheritance tax charge, but it is denied where the person receiving the asset is not UK resident. A US-resident beneficiary therefore usually receives the asset with the trustees having paid UK capital gains tax, while a US citizen who is UK resident in the year of appointment can usually claim it.

Do I need to report a distribution from a foreign trust on Form 3520?+

Yes. A US person who receives a distribution from a foreign trust must report it in Part III of Form 3520, whether or not any US tax is due and whether the trustees called it income or capital. Without a Foreign Nongrantor Trust Beneficiary Statement from the trustees, the beneficiary must use the default calculation method, which is usually more expensive. Late or missing reports attract penalties calculated by reference to the distribution.