Your UK SIPP On The Day You Renounce

A UK SIPP is not a "specified tax-deferred account" under IRC §877A(e). The list in §877A(e)(2) is closed, and its first item — an individual retirement plan — is defined through §7701(a)(37) and §408(a) as a trust created or organized in the United States. A SIPP fails that at the first clause. For a covered expatriate it is therefore a deferred compensation item under §877A(d)(4)(B), ordinarily an ineligible one, which means the present value of the accrued benefit is treated as received the day before the expatriation date and taxed as ordinary income — while not a penny leaves the pension.

Why the bucket is the whole question

Both candidate buckets look alike from a distance. Neither is part of the mark-to-market deemed sale. Neither triggers the additional tax on an early distribution. Both bite on the day before the expatriation date. A reader who stops there concludes the choice is academic.

It is not. The bucket decides whether any relief reaches the charge, whether the tax can be pushed onto a future payment instead of falling now, and what you are signing up to file for years afterwards. Get it wrong in either direction and the number on the return is wrong by the whole value of the pension.

The published guidance does not settle it. Generic renunciation articles routinely list "pensions and retirement accounts" among the assets that escape the exit tax — true of the deemed sale, and dangerously incomplete as a statement about a SIPP. UK-facing practitioners say the opposite and are right, but most assert the conclusion without showing where it comes from. The statute is short enough to read, so here it is.

The closed list, read word by word

§877A(e)(2) defines a specified tax deferred account as an individual retirement plan (as defined in §7701(a)(37)) other than a SEP or SIMPLE arrangement, a qualified tuition programme under §529, a qualified ABLE programme under §529A, a Coverdell education savings account under §530, a health savings account under §223, and an Archer MSA under §220.

Six categories. No "and similar arrangements", no "or any comparable foreign plan". The list is closed, and five of the six are plainly not a SIPP. That leaves the first.

Follow it through. §7701(a)(37) says an individual retirement plan means an individual retirement account described in §408(a) and an individual retirement annuity described in §408(b). §408(a) then opens: the term individual retirement account means "a trust created or organized in the United States for the exclusive benefit of an individual or his beneficiaries". The Treasury regulation reinforces the point, requiring the trust to be maintained at all times as a domestic trust in the United States.

A self-invested personal pension is established under UK pensions law and run by a UK operator. It is not a trust created or organized in the United States. So it cannot be an individual retirement account, therefore cannot be an individual retirement plan, therefore cannot be a specified tax deferred account — and because the list is closed, there is no second route in.

The drafting confirms the reading. Congress bothered to carve SEP and SIMPLE arrangements out of that first item, a distinction that exists only inside the US plan taxonomy. This is a list written about American accounts.

So it runs through §877A(d) instead

§877A(d)(4) defines a deferred compensation item in four limbs, and limb (B) is unambiguous: "any interest in a foreign pension plan or similar retirement arrangement or program". A SIPP sits squarely inside it.

The next fork is eligible versus ineligible, and §877A(d)(3) sets three conditions that must all hold for an item to be eligible:

• the payor is a US person, or a non-US person who elects to be treated as one for these purposes and meets the requirements the Secretary sets;
• the covered expatriate notifies the payor of that status; and
• the covered expatriate makes an irrevocable waiver of any right to claim a treaty reduction in withholding on the item.

A UK SIPP operator is not a US person, and nothing obliges it to volunteer for US withholding-agent status on one client's account. In practice it will not. The first condition fails, and the item is ineligible.

Note what that reasoning does not say. Eligibility is not a property of the plan — it is a property of the payor plus two acts of the expatriate. "A SIPP is always ineligible" is a sentence to avoid. "A SIPP is ordinarily ineligible, because its provider is not a US person and has no mechanism to elect in" is the accurate one, and the difference matters if a pot has been moved to a provider with a US arm.

What an ineligible item actually does

§877A(d)(2) is the operative rule. An amount equal to the present value of the covered expatriate's accrued benefit is treated as received on the day before the expatriation date, as a distribution under the plan. No early-distribution tax applies by reason of that treatment, and appropriate adjustments are made to later distributions so the same value is not taxed twice by the US.

Three practical consequences follow.

• It is ordinary income, not capital gain. There is no preferential rate waiting at the end of this.
• It goes on the return for the year containing the expatriation date — for most renunciants a dual-status year, which is its own filing exercise.
• Valuation is real work. For a money-purchase SIPP the fund value on the day is the natural measure. For anyone who also holds a defined-benefit entitlement, "present value of the accrued benefit" means an actuarial figure, not a transfer quotation pulled off a portal. The statute prescribes no method and we publish none; it is a facts-and-circumstances exercise to be documented, not estimated.

The two reliefs that stop short of it

This is where the arithmetic usually goes wrong, because both of the famous mitigations are written to reach somewhere else.

The exclusion amount — $910,000 for a 2026 expatriation — reduces the amount includible "by reason of paragraph (1)". Paragraph (1) is the mark-to-market deemed sale. A §877A(d)(2) inclusion arises by reason of subsection (d), so the exclusion cannot touch it. Your share portfolio gets the shelter. Your pension does not.

The deferral election under §877A(b) reaches only "property treated as sold by reason of subsection (a)". Same boundary, same result. The one bucket that produces ordinary income with no exclusion is also the one bucket whose tax cannot be pushed into the future. It falls with the return for the expatriation year.

We set out how those two limits apply across all three buckets in the three asset buckets and deferred compensation, and the deemed sale itself in which assets are actually deemed sold. Worth noting the contrast with an ISA, which is not a pension at all for these purposes and sits in the deemed-sale bucket with the rest of your investments — a different mechanic with a different relief.

The carve-out that separates a citizen from a green-card holder

§877A(d)(5) is almost absent from the published commentary, and for one group it is decisive. It disapplies both the withholding rule and the immediate-inclusion rule to the extent an item is attributable to services performed outside the United States while the covered expatriate was not a citizen or resident of the United States.

Both limbs must hold at the time the service was performed. Read that against two common fact patterns:

• A US citizen who built a SIPP while living and working in Britain was a US citizen throughout the accrual. The second limb fails for every year of it, and the carve-out rarely reaches anything.
• A long-term permanent resident who accrued a UK pension years before first becoming a US resident may be in a materially different position for that earlier service.

No apportionment percentage exists in the statute and none should be assumed. Where the carve-out is genuinely in play it is an evidenced allocation built from employment history, not a fraction borrowed from an article.

Form W-8CE, and a payor who has never heard of it

The notification route is Form W-8CE, given to the payor — not to the IRS — on the earlier of the day before the first distribution on or after the expatriation date, or 30 days after that date.

Two things trip people up. The clock runs from the expatriation date, which is the date of the oath of renunciation, not the day the Certificate of Loss of Nationality finally arrives — and that can be a great deal later. And a UK SIPP operator receiving one of these will usually have no process for it whatsoever. File it regardless: it is the mechanism by which the payor is asked to supply the present value of your accrued benefit, and a documented attempt is worth considerably more on examination than a sensible decision not to bother.

For completeness, where an item is eligible the consequence is withholding at 30 percent of each taxable payment at source — and the treaty waiver that bought that treatment is, as the statute says, irrevocable.

Paying a tax on money you cannot reach

Here is the practical shock, and it is the part almost nothing published says out loud. The charge lands on the whole accrued value of a pension that, under UK pension access rules, the holder may have no right to touch for years yet. The value is real, the tax is real, and the two are in different places.

So the tax is funded from assets outside the pension, which makes it a liquidity question to answer before the appointment at the embassy rather than after it. It is also the strongest argument for testing whether you are a covered expatriate at all — the net-worth test at $2 million, the income test at more than $211,000 of average annual net income tax for a 2026 expatriation, and the certification requirement — before any of this bites. None of §877A(d) applies to an expatriate who is not covered, and the SIPP is often the asset that makes the planning worth doing early.

The certification runs through Form 8854, which separately identifies each ineligible deferred compensation item together with its present value. The loss side of the deemed sale, which interacts with how the exclusion is allocated across your other assets, is covered in loss assets in the deemed sale.

Where we fit

We model the SIPP alongside the rest of the balance sheet before a date is fixed: which bucket each asset falls in, what the charge is, where the cash will come from, and whether the timing of the renunciation ought to move. Every position and every return is reviewed and signed by a licensed professional — a CPA or Enrolled Agent on the US side, an ACCA-qualified accountant on the UK side. Cross-border expatriation positions are escalated for human review by default; nothing here is filed on an agent's judgement alone.

If a renunciation is on your horizon, start at our renouncing US citizenship service page, see pricing, or book a consultation and have the pension modelled properly. For the annual position while you are still a US person, see US tax on UK pensions and SIPPs.

Sources

• 26 U.S.C. §877A, US Government Publishing Office — subsections (a), (b), (d) and (e) as compiled.
• IRS, Instructions for Form 8854 — the four classes not deemed sold, the ineligible-item inclusion, and the Form W-8CE window.
• IRS, About Form W-8CE.
• eCFR, Treas. Reg. §1.408-2 — the domestic-trust requirement for an individual retirement account.
• GOV.UK, when you can take your pension.