Self-invested personal pension (SIPP) UK: Complete guide for expats and US citizens in 2026
A self-invested personal pension, or SIPP, is a UK government-approved pension wrapper that lets you choose and manage your own investments while receiving tax relief on contributions of up to 100% of your annual UK earnings. Unlike a standard workplace pension, where the provider picks the funds, a SIPP puts you in control of asset allocation.
HMRC registers every SIPP scheme under the same tax rules that govern all UK personal pensions, but the investment range is wider. A SIPP can hold individual equities, bonds, commercial property, exchange-traded funds, and cash deposits – subject to HMRC’s list of permitted assets.
The core features that define a SIPP:
- Tax relief on contributions at 20%, 40%, or 45%, depending on your UK income tax band (up to 48% for Scottish taxpayers, who have a separate set of income tax bands).
- Tax-free investment growth inside the pension wrapper – no UK income tax or capital gains tax on returns while the funds remain in the SIPP.
- A 25% tax-free lump sum available when you access the pension, currently capped at £268,275 (2025/26).
- Flexible access from age 55, rising to 57 from April 6, 2028.
- A choice of drawdown, annuity, or lump sum withdrawals in retirement.
For US citizens and green card holders, a SIPP is not recognized as a qualified retirement plan under US tax law. That distinction creates a separate layer of IRS reporting – covered in detail in the US-specific sections below.
Most foreign pension types are taxable in the US, including SIPPs, employer schemes, and state pensions – the variation is in which forms apply and whether a treaty changes the result.
How does a SIPP pension work? Key rules and structure
A self-invested personal pension in the UK follows a lifecycle of six steps, from opening the account to drawing retirement income. The mechanics are the same whether you live in the UK or abroad – the difference for US expats is the additional IRS reporting that attaches at each stage.
The IRS treats most foreign retirement plan distributions as taxable income under IRC §§ 61 and 72.
- Open a SIPP. You choose a provider, complete the application, and fund the account. Providers range from low-cost online platforms to full-service wealth managers.
- Contribute. You pay in from after-tax income. The annual allowance for the 2025/26 tax year is £60,000, or 100% of your UK earnings if lower.
- Receive tax relief. Your SIPP provider claims 20% basic-rate relief from HMRC and adds it to your pot automatically. Higher-rate and additional-rate taxpayers reclaim the extra through Self Assessment.
- Invest. You select and manage the investments inside the wrapper – equities, bonds, ETFs, commercial property, or cash.
- Grow tax-free. Returns compound without UK income tax or capital gains tax while they stay in the SIPP. HMRC’s Pensions Tax Manual sets out the full rules governing registered pension schemes.
- Withdraw. From age 55, rising to 57 from April 2028, you can take up to 25% as a tax-free lump sum. The rest is taxed as income at your marginal UK rate.
The advantages of a SIPP over a standard workplace pension include wider investment choice, the ability to consolidate multiple old pension pots into one account, and full control over when and how you draw funds.
The trade-off is that you bear the investment risk and the administrative burden – both of which increase if you also file US taxes.
Tax relief: How much can you claim?
SIPP tax relief adds a minimum of 20% to every personal contribution, with higher-rate and additional-rate taxpayers able to reclaim up to 40% or 45% through Self Assessment (up to 48% for Scottish taxpayers, who have a separate set of income tax bands).
For the 2025/26 tax year, the annual allowance is £60,000, and the carry-forward rule lets you use up to three prior years’ unused allowance if you were a member of a registered pension scheme in those years.
How relief works by tax band:
- Basic rate (20%): Your SIPP provider claims relief from HMRC at source. A £800 net contribution becomes £1,000 in your pension pot.
- Higher rate (40%): You claim the additional 20% via your Self Assessment tax return. The net cost of a £1,000 gross contribution is £600.
- Additional rate (45%): You reclaim 25% through Self Assessment. The net cost of a £1,000 gross contribution is £550. Scottish taxpayers pay rates up to 48% and reclaim relief at their applicable Scottish band.
SIPP tax relief for non-taxpayers still applies. Even if you earn below the £12,570 personal allowance or have no UK income at all, you can contribute up to £2,880 net per year and receive £720 in basic-rate relief from HMRC, bringing the gross total to £3,600 (2025/26).
The SIPP tax advantages extend beyond contribution relief. Investment growth inside the wrapper is free of UK income tax and capital gains tax, and the 25% tax-free lump sum at withdrawal is an additional benefit not available on most other savings vehicles.
How to get tax relief on a SIPP?
The process depends on your tax band. Basic-rate relief is automatic – your provider handles the HMRC claim. If you pay 40% or 45% tax, you report your gross pension contributions on your Self Assessment return and HMRC adjusts your tax bill.
The extra relief reduces your income tax liability rather than being added to your pension pot.
If you also claim a foreign tax credit on Form 1116 for UK tax paid on the same income, coordinate the relief carefully – the US credit applies to the UK tax you actually paid, not to the amount before pension relief.
SIPP for expats: Can a non-UK resident open a SIPP?
Non-UK residents can generally keep an existing SIPP and continue to hold, trade, and draw from it with no restriction. Opening a new SIPP for non-UK residents is a different matter – most providers require a UK bank account, and some will not accept applications from non-UK addresses.
Non-UK residents can contribute to an existing SIPP for up to five full tax years after leaving the UK and still receive basic-rate tax relief on contributions up to £3,600 gross per year. After those five years, contributions with tax relief stop unless you have UK earnings.
The eligibility rules for expats:
- Existing SIPP holders: You keep the account, its investments, and full drawdown access regardless of where you live.
- New applications: Provider-dependent. Some platforms accept non-UK residents; others do not. A UK bank account is almost always required.
- Contributions after leaving the UK: Up to £2,880 net per year for five full tax years after departure. HMRC adds £720 in basic-rate relief automatically.
- After the five-year window: You can still hold the SIPP, transfer between providers, and withdraw funds – but new tax-relieved contributions require UK earnings.
If you want to open a SIPP account as a non-UK resident, confirm the provider’s residency policy before applying. Some providers impose higher fees or restrict the available investment universe for overseas-based holders.
The distinction between US tax residency and citizenship matters here: a US citizen living in the UK is both a UK resident and a US taxpayer, while a US citizen who has left the UK keeps the US filing obligation but may lose access to SIPP contributions.
SIPP for US citizens and US expats in the UK
A UK SIPP for a US citizen triggers reporting obligations that do not apply to UK-only taxpayers. The US taxes its citizens on worldwide income regardless of where they live, and the IRS does not recognize a SIPP as a qualified retirement plan under IRC §§ 401–402.
US citizens holding a UK SIPP face a dual-filing burden: the SIPP must be reported to HMRC for UK purposes and to the IRS for US purposes, with different rules, forms, and deadlines on each side.
The main US-side issues for SIPP holders:
- Worldwide income taxation. The US taxes all income, including SIPP investment growth and withdrawals, unless a treaty election defers or reduces the tax.
- Treaty election under Article 18. The UK-US tax treaty allows US persons to elect to defer US tax on SIPP growth. You generally take this position on Form 8833 for each year you’re claiming the deferral – confirm your specific filing pattern with a tax professional.
- Employer contributions. These are generally taxable to the US employee under IRC § 402(b), since the plan is not a qualified US plan. If you’re a US citizen employed in the UK and your employer contributes to the plan through that UK employment, Article 18(5) of the UK-US tax treaty may let you exclude those contributions from US taxable income – a position claimed on Form 8833.
- PFIC exposure. Non-US mutual funds inside the SIPP are likely classified as Passive Foreign Investment Companies under IRC § 1297, triggering Form 8621 and punitive tax treatment unless a QEF or mark-to-market election is made.
An international SIPP for US residents works the same way mechanically as any other SIPP, but the additional IRS forms – FBAR, Form 8938, Form 8833, and potentially Form 8621 and Form 3520 – make the compliance cost higher.
The SIPP tax treatment on the US side depends entirely on whether you make and maintain the treaty election each year.
UK-US tax treaty and SIPP: Article 18 explained
Under Article 18 (Pension Schemes) of the 2001 UK-US tax treaty, as amended by the 2002 Protocol, income earned inside a UK pension scheme, including a SIPP, is taxed to a US person only when it’s paid out, not as it accrues.
Without a timely Form 8833 treaty election, the IRS treats annual SIPP investment growth as currently taxable US income, eliminating the tax-deferral benefit for US citizens.
The treaty election works as follows. You file Form 8833, Treaty-Based Return Position Disclosure, with your annual Form 1040 to disclose that you’re relying on Article 18, paragraph 1, of the Convention to defer US tax on your UK pension’s undistributed income and gains.
Whether this disclosure needs to be refiled every year, and what happens if a year is missed, depends on your specific facts – confirm your filing pattern with a cross-border tax professional rather than assuming a missed year is unrecoverable.
The saving clause in Article 1, paragraph 4, of the treaty generally preserves the US right to tax its own citizens on all income. Paragraph 1 of Article 18 (Pension Schemes) is specifically carved out from the saving clause under Article 1, paragraph 5(a), which is why the deferral survives for US citizens – not because all treaty benefits automatically apply to them.
Article 18, paragraph 5 – covering the employer-contribution exclusion discussed above – is one of the specific exceptions carved out from the saving clause under Article 1, paragraph 5(a), alongside paragraph 1 of the same Article. That means US citizens can rely on it, not only UK residents who aren’t US citizens.
Whether it applies to your specific facts – your employer, your contract, and how the contribution is treated under UK tax rules – still depends on your situation, so confirm the details with a cross-border tax professional.
SIPP withdrawals remain taxable in both countries even with the treaty election in place. The election defers US tax on growth; it does not exempt withdrawals.
The IRS taxes pension distributions under the rules in Publication 575. The foreign tax credit on Form 1116 typically prevents double taxation at the point of withdrawal by crediting UK tax already paid against the US liability on the same income.
FBAR and FATCA reporting for UK SIPPs
US persons who hold a UK SIPP must consider three separate information-reporting obligations, each with its own form, threshold, and filing destination.
The IRS may treat a UK SIPP as a foreign grantor trust, triggering Form 3520 and Form 3520-A filing obligations with penalties up to 35% of the gross value of distributions for non-compliance.
The three reporting layers:
- FBAR – FinCEN Form 114. Required if the aggregate value of all your foreign financial accounts exceeds $10,000 at any point during the calendar year. A SIPP with a cash or investment balance held at a UK provider generally counts as a foreign financial account. The 2026 deadline is April 15, with an automatic extension to October 15. File electronically through the BSA E-Filing System.
- FATCA – Form 8938. Required if your specified foreign financial assets exceed the applicable threshold: $200,000 at year-end for single filers living abroad, or $300,000 at any point during the year (2025). Married filing jointly thresholds are $400,000 at year-end or $600,000 at any point during the year (2025). The SIPP is a specified foreign financial asset. Form 8938 is filed with your Form 1040. Filing one form does not satisfy the other – a SIPP can trigger both FBAR and Form 8938.
- Form 3520 / 3520-A – foreign trust reporting. The IRS may classify a SIPP as a foreign grantor trust under IRC § 6048. If it does, Forms 3520 and 3520-A apply. Relief is available under Rev. Proc. 2020-17 for qualifying tax-favored foreign retirement trusts – covered in the Form 3520 section below.
PFIC rules and UK SIPP investment funds
Non-US mutual funds and pooled investment vehicles held inside a SIPP are typically classified as Passive Foreign Investment Companies under IRC § 1297. A foreign corporation meets the PFIC definition if 75% or more of its gross income is passive, or if 50% or more of its assets produce passive income. Most UK-domiciled funds clear both tests.
Every non-US fund held inside your SIPP is likely a PFIC, and without a QEF or mark-to-market election, the IRS applies an interest charge on deferred gains that can make your UK pension far more expensive than anticipated.
The default PFIC tax regime under IRC § 1291 works by allocating gains and excess distributions across the entire holding period, taxing each prior year’s allocation at the highest marginal rate for that year, and adding an interest charge on top.
The combined effect can produce effective tax rates exceeding 50% on long-held fund positions.
Two elections can mitigate the default treatment:
- QEF election under IRC § 1295. You include your pro-rata share of the fund’s ordinary earnings and net capital gains on your US return each year, regardless of whether the fund distributes cash. The election preserves long-term capital gains rates and avoids the interest charge. The fund must provide a PFIC Annual Information Statement – in practice, most UK-domiciled funds do not supply this.
- Mark-to-market election under IRC § 1296. You recognize annual unrealized gain or loss as ordinary income. This is often the more practical option for UK SIPP holders because it does not require the fund to produce an information statement.
Both elections must be made on a timely filed Form 8621 for the first year they apply. Missing the deadline locks you into the default § 1291 regime for that holding.
For a full explanation of the QEF mechanics, see TFX’s guide to QEF elections for PFIC reporting.
Form 3520 and foreign trust relief for SIPPs
Rev. Proc. 2020-17 provides relief from Form 3520 and Form 3520-A filing for qualifying tax-favored foreign retirement trusts, including UK SIPPs that meet the criteria. The relief exempts eligible individuals from the penalties under IRC § 6677 for failing to report these trusts.
Under Rev. Proc. 2020-17, qualifying UK SIPPs are exempt from the Form 3520 foreign trust reporting requirement, but taxpayers must still make the Article 18 treaty election on Form 8833 to defer US tax on SIPP growth.
To qualify for the exemption, the SIPP must meet six conditions set out in Section 5.03 of the revenue procedure:
- The trust is generally exempt from income tax, or is otherwise tax-favored, under UK law.
- Annual information about the trust is reported, or available, to HMRC.
- Only contributions from income earned through personal services are permitted.
- Contributions are limited by a percentage of earned income, an annual cap of $50,000, or a lifetime cap of $1,000,000.
- Withdrawals are restricted to a specified retirement age, disability, or death, or penalties apply to early withdrawals.
- For employer-maintained SIPPs, the scheme must be offered on a nondiscriminatory basis to a broad group of employees, not just senior staff.
Separately, the taxpayer must also qualify as an “eligible individual” under Section 5.02 of the revenue procedure – meaning they are a US citizen or resident who is compliant with all US federal income tax filing requirements, including having reported any SIPP contributions, earnings, and distributions on the applicable return.
Even if the SIPP qualifies for Form 3520 relief, Form 8938 and FBAR obligations still apply when the relevant thresholds are met. The relief removes the trust-reporting layer only – it does not eliminate other foreign-asset disclosure requirements.
SIPP contribution rules: Annual allowance and limits
SIPP contribution rules set the maximum you can pay into a pension each year while receiving tax relief. For the 2025/26 tax year, the annual allowance is £60,000, or 100% of your UK earnings if lower. This limit covers all pension contributions combined – your personal contributions, employer contributions, and any third-party payments.
Contributions to a self-invested personal pension scheme are pooled with contributions to any other UK registered pension when calculating the annual allowance. If you also have a workplace pension with employer contributions, both count toward the £60,000 cap.
The key contribution limits for 2025/26:
- For the 2025/26 tax year, you can contribute up to £60,000 to your SIPP annually (or 100% of UK earnings if lower), but once you start drawing flexibly, the MPAA reduces your future contribution limit to just £10,000 per year. The MPAA applies to money purchase contributions only and cannot be carried forward.
- Carry-forward: Up to three prior years’ unused annual allowance can be carried forward if you were a member of a registered pension scheme in those years. This can significantly increase the amount you can contribute in a single year if you have unused allowance from 2022/23, 2023/24, or 2024/25.
- Non-earners and non-UK residents: Up to £2,880 net per year, topped up to £3,600 gross by HMRC basic-rate relief. This applies for up to five full tax years after leaving the UK.
Tax relief on SIPP contributions applies at your marginal UK income tax rate. If your total pension inputs exceed the annual allowance, the excess is added to your taxable income and taxed at your marginal rate through the annual allowance charge, reported on your Self Assessment return.
SIPP investment options: What can you hold?
The range of SIPP pension investments is wider than most workplace pensions. You choose the assets, manage the allocation, and decide when to buy or sell – subject to HMRC’s rules on permitted and prohibited investments.
Unlike a standard personal pension, a SIPP allows you to hold commercial property, individual stocks, and ETFs – but residential property is strictly prohibited and triggers a 55% HMRC tax charge if attempted.
Permitted SIPP investments include:
- UK and international equities
- government and corporate bonds
- exchange-traded funds and investment trusts
- commercial property, including overseas commercial property
- cash deposits
Prohibited investments:
- residential property
- collectibles, including art, antiques, wine, and classic cars
- tangible moveable property
SIPP overseas property rules allow commercial property holdings outside the UK, but the prohibition on residential property applies regardless of location.
Holding a prohibited asset inside a SIPP triggers an unauthorized payment charge of 40% on the member, plus an unauthorized payment surcharge of up to 15% if the payment exceeds 25% of the fund’s value.
The scheme administrator can separately face a scheme sanction charge of up to 40% (reduced to 15% if the member’s charge has been paid). Combined, these charges commonly reach 55% or more of the value of the prohibited investment.
The SIPP investment rules for US citizens add another layer. Any non-US fund held inside the SIPP is likely a PFIC, which means choosing an investment advisor who understands both UK pension rules and US tax obligations is critical.
Holding US-listed ETFs or individual US equities inside the SIPP can reduce PFIC exposure, though not all SIPP providers offer access to US-domiciled funds.
SIPP vs company pension vs QROPS: Which is right for expats?
The SIPP rules for expats differ depending on whether you keep a workplace pension, transfer to a SIPP, or move to a QROPS – a Qualifying Recognised Overseas Pension Scheme. Each option has a different level of investment control, tax relief, and US reporting complexity.
For US expats with UK pension savings, a SIPP offers maximum investment control but the highest US reporting complexity, while QROPS may offer a cleaner exit from the UK pension system but triggers a 25% overseas transfer charge if you transfer to most countries outside the UK.
| SIPP | Company pension | QROPS | |
|---|---|---|---|
| Control | Full – you choose all investments | Limited – employer’s fund range | Varies by scheme |
| Tax relief | Up to 45% on contributions | Same rates, via employer | No UK relief after transfer |
| Expat suitability | Stays in UK system, accessible worldwide | May be difficult to manage from abroad | Designed for people leaving the UK |
| US reporting complexity | Highest – FBAR, FATCA, PFIC, Form 8833, potential Form 3520 | Similar FBAR/FATCA exposure, but fewer investment-level PFIC issues if the fund is a single pooled vehicle | 25% overseas transfer charge for most non-UK transfers; may simplify ongoing UK reporting |
Self-invested pensions in the UK give the holder full control over asset allocation, while a company pension typically limits you to the employer’s default fund range. A group self-invested personal pension is an employer-arranged SIPP that offers the same investment flexibility as a personal SIPP, with employer contributions included.
The QROPS overseas transfer charge of 25% took effect on 9 March 2017. It applies to most transfers unless an exclusion applies – typically that the member is resident in the same country as the QROPS, or the QROPS is an employer-sponsored, international-organization, or overseas public service scheme.
A separate EEA-residence exclusion was removed by the Autumn Budget 2024, so EEA residence alone no longer avoids the charge.
Is income from a SIPP taxable? UK and US treatment
SIPP withdrawals are taxable in both the UK and the US, but the foreign tax credit on IRS Form 1116 typically prevents true double taxation for US citizens receiving UK pension income.
UK tax treatment:
- Up to 25% of the pension pot can be taken as a tax-free lump sum, currently capped at £268,275 (2025/26).
- The remaining 75% is taxed as income at your marginal UK rate – 20%, 40%, or 45% (up to 48% for Scottish taxpayers).
- Non-UK residents receiving SIPP income have UK tax withheld at source under PAYE. You can reclaim overpaid UK tax by filing Form DT-Individual with HMRC.
US tax treatment:
- SIPP taxation in the US treats withdrawals as ordinary income on Form 1040, lines 5a/5b, under IRC §§ 61 and 72.
- The UK’s 25% tax-free lump sum is not recognized by the IRS. The full distribution is taxable in the US unless a treaty position changes the result.
- The foreign tax credit on Form 1116 credits UK tax paid against your US liability on the same pension income.
- If you are a high earner, SIPP income may also be subject to the 3.8% Net Investment Income Tax on Form 8960, depending on your modified adjusted gross income and filing status.
Streamlined filing for US expats with unreported UK SIPPs
US expats who have never reported their UK SIPP to the IRS can use the Streamlined Foreign Offshore Procedures to catch up penalty-free, provided the failure was non-willful.
The four steps to come into compliance:
- File three years of amended or delinquent US tax returns – including all required schedules, Form 8833, Form 8938, and any Form 8621 for PFIC holdings inside the SIPP.
- File six years of FBARs – covering every year in which the aggregate value of your foreign financial accounts exceeded $10,000.
- Certify non-willful conduct on Form 14653 – a signed statement explaining why the failure to report occurred.
- Pay any tax and interest due – the offshore penalty under the foreign streamlined program is 0% for qualifying expats who meet the non-residency requirement.
To qualify for the foreign track, you must have been outside the US for at least 330 full days in at least one of the three most recent tax years. If both spouses file jointly, both must meet the test.
For a complete walkthrough of eligibility, required forms, and common mistakes, see TFX’s Streamlined Foreign Offshore Procedures guide.
Can I have more than one SIPP?
Yes. HMRC rules allow you to hold multiple SIPPs simultaneously with different providers. There is no limit on the number of accounts.
You can hold as many SIPPs as you like, but your total contributions across all accounts must not exceed the £60,000 annual allowance – and each SIPP is a separate reportable foreign account for US FBAR purposes.
Holding multiple SIPPs can be useful for diversifying across providers, separating drawdown pots from growth pots, or keeping an old employer-facilitated SIPP alongside a personal one. The annual allowance applies to total pension inputs across all schemes combined – not per SIPP.
For US taxpayers, each SIPP is a separate foreign financial account. If you hold three SIPPs, you report three accounts on the FBAR and, if thresholds are met, three accounts on Form 8938.
The maximum account value for each SIPP must be calculated independently using the highest balance during the year, converted to USD at the December 31 Treasury exchange rate.
SIPP pension inheritance tax: What happens when you die?
Under current rules for the 2025/26 tax year, unspent SIPP funds sit outside your estate for UK inheritance tax purposes. If you die before age 75, your beneficiaries receive the SIPP funds tax-free. If you die after 75, beneficiaries pay income tax at their marginal rate when they draw from the inherited SIPP – but no IHT.
From April 2027, unspent SIPP funds will no longer be exempt from UK inheritance tax – a change that US expats with UK pensions must factor into their cross-border estate planning.
Finance Act 2026 brought this reform into law. From April 6, 2027, most unused pension funds and death benefits will be included in the deceased’s estate for IHT at 40% above the nil-rate band of £325,000. HMRC estimates the reform will bring about 10,500 additional estates into inheritance tax in the 2027–28 tax year, the first year the change applies.
For US citizens, US estate tax rules apply separately regardless of UK IHT treatment. The US taxes the worldwide estate of its citizens, with a 2025 federal estate tax exemption of $13.99 million per individual.
A UK SIPP that falls below the UK IHT nil-rate band may still form part of the US estate calculation, and a SIPP that exceeds the UK threshold may trigger IHT in the UK and estate tax in the US – though credits under the UK-US estate tax treaty can reduce double taxation.
If you hold a UK SIPP and are planning your estate, review both the UK and US implications before April 2027.
Frequently asked questions
A self-invested personal pension is a UK HMRC-registered pension that gives you control over how your pension savings are invested. You can hold equities, bonds, ETFs, commercial property, and cash inside the wrapper. Contributions receive tax relief at 20%, 40%, or 45% depending on your UK income tax band (up to 48% for Scottish taxpayers, who have a separate set of income tax bands), and investment growth is tax-free inside the SIPP. The annual allowance is £60,000 for the 2025/26 tax year.
You can generally keep an existing SIPP after leaving the UK, but opening a new SIPP as a non-UK resident depends on the provider – most require a UK bank account. You can continue making tax-relieved contributions of up to £3,600 gross per year for five full tax years after leaving the UK, even with no UK earnings.
Yes. A UK SIPP may trigger FBAR filing if your aggregate foreign account value exceeds $10,000, Form 8938 if FATCA thresholds are met, Form 8833 for the treaty election, and Form 8621 if the SIPP holds PFICs. The number of forms depends on the SIPP’s value, its investments, and whether you make a treaty election.
Yes. SIPP withdrawals are generally taxable as ordinary income under IRC §§ 61 and 72. The Article 18 treaty election on Form 8833 can defer US tax on SIPP growth while you are still accumulating, but withdrawals are taxable when taken. Form 1116 credits UK tax paid against the US liability to prevent double taxation.
The standard annual allowance is £60,000 for the 2025/26 tax year, or 100% of your UK earnings if lower. Once you begin flexible drawdown, the money purchase annual allowance reduces future contributions to £10,000 per year. You can carry forward up to three prior years’ unused allowance.
Yes. HMRC does not limit the number of SIPPs you can hold. Your total contributions across all SIPPs and other registered pension schemes must stay within the £60,000 annual allowance. For US taxpayers, each SIPP is a separate foreign account that may require its own FBAR and Form 8938 disclosure.
A SIPP stays in the UK pension system and gives you full investment control but carries the highest US reporting burden – FBAR, FATCA, PFIC, and Form 8833. A QROPS transfers your pension out of the UK system, which may simplify ongoing UK reporting, but triggers a 25% overseas transfer charge for most transfers to countries outside the UK.
Yes. Article 18 (Pension Schemes) of the 2001 UK-US tax treaty, as amended by the 2002 Protocol, allows US persons to elect to defer US tax on SIPP contributions and growth. You generally file Form 8833 in each year you’re claiming the deferral. Without it, SIPP growth is currently taxable in the US each year.
The advantages of a SIPP for US expats include full investment control, tax relief on contributions of up to 45%, tax-free growth inside the UK wrapper, and a 25% tax-free lump sum on withdrawal. The trade-off is a higher US reporting burden – including FBAR, FATCA, potential PFIC filings, and the annual Form 8833 treaty election.
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