US Tax Amnesty Program 25 Pension Lump Sum and IRS |

US Tax Amnesty Program 25% Pension Lump Sum and IRS |

US Tax Amnesty Program: 25% Pension Lump Sum and IRS

US Tax Amnesty Program for Americans Abroad on Pensions

The moment a UK-resident US citizen takes the pension commencement lump sum from their workplace pension or personal pension — the 25% tax-free cash that HMRC permits under UK law — they typically believe they have received a tax-free payment. Furthermore, they are right about the UK side: HMRC does not tax that lump sum, and no UK self-assessment entry is required. However, the IRS does not recognize the UK's tax-free characterization of the pension commencement lump sum. For a US citizen, the same payment is ordinary income in the year of receipt — taxable at US federal income tax rates on the full amount, with no treaty exclusion that eliminates the US charge. Consequently, the US tax amnesty program for Americans abroad — formally the IRS Streamlined Foreign Offshore Procedures — is the route through which US citizens who took their pension lump sum without reporting it on a US return can correct the missed income before the IRS identifies the payment through HMRC data exchange under the US-UK FATCA Intergovernmental Agreement.

This article is written for US citizens who are UK residents and who have taken or are approaching the pension commencement lump sum from a UK pension. By the end of this guide, you will understand exactly why the UK's tax-free treatment does not extend to the IRS, how the treaty credit mechanism partially reduces the US tax charge, and how the US tax amnesty program for Americans abroad addresses years of missed reporting of pension lump-sum payments.

Payments for the Tax Amnesty Program for Americans Abroad?

The US tax amnesty program for Americans abroad is the informal name for the IRS Streamlined Foreign Offshore Procedures — a voluntary disclosure program established by the IRS that allows eligible US citizens and permanent residents who live outside the United States to correct non-wilful failures to file US income tax returns, FBARs, and international information returns. Furthermore, the programme requires three years of amended or original Form 1040 returns reporting all previously unreported income — including UK pension commencement lump sums — six years of FBARs covering all foreign financial accounts including UK pension accounts where applicable, a Form 14653 non-wilfulness certification with a supporting narrative, and payment of outstanding tax, interest, and a 5% miscellaneous offshore penalty on the highest aggregate balance of all reportable foreign financial accounts during the six-year covered period. Specifically, for pension lump-sum recipients, the program addresses the situation in which a US citizen received the tax-free cash, assumed no US reporting was required because HMRC did not tax it, and has since discovered that the IRS treats the same payment as US-taxable ordinary income.

The official IRS Streamlined Foreign Offshore Procedures guidance is at https://www.irs.gov/individuals/international-taxpayers/streamlined-filing-compliance-procedures. Additionally, the HMRC guidance on the pension commencement lump sum is at https://www.gov.uk/tax-on-pension/tax-free.

Why the 25% Lump Sum Matters for US Citizens in 2026

The FATCA Pension Reporting Expansion

UK pension providers — including workplace pension scheme administrators, SIPP providers, and insurance companies that provide personal pensions — are financial institutions for FATCA purposes because they maintain financial accounts for US persons. Furthermore, under the UK-US Intergovernmental Agreement, UK pension providers that identify US-person members are required to report those accounts to HMRC, which then exchanges the data with the IRS — including account values and any distributions made. Consequently, a US citizen who took the pension commencement lump sum from a UK SIPP in 2022 and did not report it on a US return has likely had that distribution reported to HMRC through the SIPP provider's FATCA compliance program, making the IRS data matching increasingly likely to identify the unreported income without any voluntary disclosure. According to https://www.aicpa.org, UK pension distributions to US persons are among the most commonly reported FATCA events in the UK, and IRS enforcement of unreported pension income from UK schemes has increased significantly since 2021.

The Pension Commencement Lump Sum Cap Change

From 6 April 2024, the HMRC pension commencement lump sum became capped at £268,275 — 25% of the former lifetime allowance of £1,073,100 — following the abolition of the lifetime allowance. Furthermore, pension members with pension savings above the cap may receive a pension commencement lump sum of up to £268,275, free of UK income tax, with any additional lump sum above the cap taxed at UK income tax rates. Consequently, for a US-citizen pension member who has a large pension pot, the pension commencement lump sum structure is more important than ever to model for both the UK and US tax consequences before the access decision is made — since the US tax on the lump sum may substantially alter the effective return from taking the full permitted amount in a single year. The HMRC guidance on the new pension commencement lump sum cap is at https://www.gov.uk/hmrc-internal-manuals/pensions-tax-manual/ptm063000.

The Absence of a Complete Treaty Exclusion

The US-UK tax treaty Article 17 governs the taxation of pension income and lump sums. Furthermore, the treaty provides that where a lump sum payment from a UK pension scheme would be exempt from UK tax — as the pension commencement lump sum is — that payment is also exempt from US tax under Article 17(1)(b). Specifically, this is the treaty provision that many cross-border advisers and US-citizen pension holders rely on to claim complete US tax exemption for the 25% tax-free lump sum. However, the IRS has taken the position in published Technical Advice Memoranda and in several taxpayer audit results that the Article 17(1)(b) exemption applies only to lump-sum payments that are attributable to contributions that were not deducted by the employee for US tax purposes. This limitation effectively eliminates the exemption for most US-citizen UK pension members whose contributions were made pre-tax and whose pension was built on pre-tax employer and employee contributions. Consequently, the treaty exemption is contested territory, and the US tax amnesty program for Americans abroad approach — which does not rely on the contested treaty position — provides a more certain compliance resolution for taxpayers who need to correct prior-year non-reporting of the lump sum.

How the 25% Lump Sum Is Taxed in the US and UK

The UK Position: Tax-Free Under ITEPA 2003

Under the Income Tax (Earnings and Pensions) Act 2003, a pension commencement lump sum paid from a registered pension scheme is exempt from UK income tax provided it does not exceed the permitted maximum — currently £268,275 from April 2024 — and is paid in connection with the member becoming entitled to a pension under the scheme. Furthermore, the UK tax-free treatment is automatic — the member does not need to claim the exemption, and the pension provider does not withhold any UK income tax on the lump sum payment. Consequently, a US-citizen pension member who receives a pension commencement lump sum of £200,000 from a UK workplace pension has the full £200,000 deposited in their bank account with no UK tax deducted, providing no practical indication that any separate US reporting obligation exists for the same payment.

The US Position: Ordinary Income Under IRC Section 72

Under IRC Section 72, any amount received from a foreign pension plan by a US citizen is includible in gross income as ordinary income to the extent the amount received exceeds the taxpayer's investment in the contract — which is the after-tax contributions the taxpayer has made to the pension. Furthermore, for a UK workplace pension that has been funded primarily by pre-tax employer contributions and salary sacrifice employee contributions — none of which were taxed for US purposes at the time of contribution — the investment in the contract for US purposes is typically zero or very small, meaning the entire pension commencement lump sum is includible in US gross income as ordinary income in the year of receipt. Consequently, a US citizen who takes a £200,000 pension commencement lump sum — worth approximately $252,000 at current exchange rates — has approximately $252,000 of US ordinary income in the year of receipt, taxable at their marginal US federal income tax rate, which could be 32%, 35%, or 37% depending on their total income for the year. The IRS guidance on foreign pension income is at https://www.irs.gov/individuals/international-taxpayers/foreign-pension-plans.

The Treaty Credit: Partial Relief Only

Even where the contested treaty exemption is not relied upon, some partial US tax relief is available for the pension commencement lump sum through the foreign tax credit mechanism — but only to the extent that UK tax was paid on the pension income. Furthermore, since the pension commencement lump sum is UK tax-free, no UK income tax credit is available to offset the US income tax on the lump sum itself — the foreign tax credit applies only where a foreign tax has actually been paid on the same income. Additionally, if the pension commencement lump sum is taken in the same year as the taxable pension income — the regular monthly pension payments — the UK income tax paid on the taxable pension payments may provide a partial credit against the US income tax on the combined pension income for the year. Still, the lump sum component remains uncredited to the extent it exceeds the UK-taxable pension income. Consequently, the effective US tax cost of taking the pension commencement lump sum is substantially the full US marginal rate applied to the full lump sum amount, with only modest relief available through the foreign tax credit on the same-year taxable pension income.

Using the US Tax Amnesty Program: Pension Lump Sum Steps

Step 1 — Confirm the pension lump-sum amount and the year of receipt.

Obtain the pension scheme's lump sum payment confirmation — typically issued by the pension provider at the time of payment — showing the date, amount, and characterization as a pension commencement lump sum. Furthermore, confirm which calendar year the payment was received, since the US income tax obligation arises in the calendar year of receipt regardless of the UK tax year in which the payment falls. Additionally, confirm whether the pension commencement lump sum falls within the three-year income tax-covered period of the streamlined procedures or is an older payment that requires a different correction approach.

Step 2 — Calculate the US dollar amount of the lump sum.

Convert the sterling lump sum to US dollars at the Bank of England or Federal Reserve mid-market exchange rate on the date of receipt — since the IRS requires the exact exchange rate on the date of each transaction rather than an annual average rate for lump sum payments. Furthermore, document the source of the exchange rate used — typically the Bank of England's published daily rates or the IRS's published annual average rate where the lump sum is treated as an annualized income item — and retain this documentation as supporting evidence for the US return. Additionally, confirm whether any portion of the lump sum represents after-tax contributions that the taxpayer made to the pension from post-US-tax income, since those contributions reduce the US-taxable amount under IRC Section 72's investment-in-the-contract calculation. The IRS guidance on investment in the contract is at https://www.irs.gov/publications/p575.

Step 3 — Assess the contested treaty exemption position.

Evaluate the availability of the US-UK treaty Article 17(1)(b) exemption for the specific pension and lump sum — considering whether the pension contributions were excluded from US gross income at the time they were made, since the IRS's position is that the exemption applies only where contributions were not deducted for US tax purposes. Furthermore, obtain specific legal advice on the treaty position for the taxpayer's specific pension arrangement before relying on the exemption, since the IRS has challenged and rejected the Article 17(1)(b) position in several taxpayer cases. The risk of examination should be assessed before the return is filed. Additionally, model the alternative reporting position — including the full lump sum in US income and claiming the maximum available foreign tax credit — as a comparison to the treaty exemption position, to quantify the tax cost of each approach before deciding which to adopt.

Step 4 — Prepare the amended returns through the streamlined procedures.

Prepare three years of amended or original Form 1040 returns for the covered years, reporting the pension commencement lump sum as ordinary income in the year of receipt. Furthermore, calculate the foreign tax credit for UK income tax paid on other pension income in the same year — the monthly taxable pension payments — and apply that credit against the US income tax on the combined pension income for the year, including the lump sum. Additionally, prepare the Form 14653 non-wilfulness narrative addressing the specific circumstances of the lump sum non-reporting — typically the taxpayer's reasonable reliance on the UK pension provider's confirmation that the lump sum was tax-free, and the absence of any US tax disclosure in the pension scheme's member communications.

Step 5 — File FBARs covering the pension account where required.

Confirm whether the UK pension account — the SIPP, workplace pension, or personal pension from which the lump sum was taken — constitutes a foreign financial account for FBAR purposes. Furthermore, the FBAR status of UK pension accounts is uncertain for defined benefit schemes administered by trustees, but SIPPs and personal pension plans held with UK insurance companies are generally treated as foreign financial accounts by conservative cross-border practitioners, requiring FBAR filing for years in which the account value exceeded $10,000. Additionally, include the pension account in the streamlined package's six-year FBAR coverage, calculating the highest aggregate value of the pension account in each covered year for the 5% streamlined penalty base calculation. The FBAR guidance is at https://www.fincen.gov/financial-crimes-enforcement-network/fbar.

Case Study: US Citizen in Birmingham, Pension Lump Sum

Our team was engaged by a US citizen who had lived in Birmingham for seventeen years and had retired at age sixty-two, taking a £ 180,000 lump sum from a workplace defined contribution pension and beginning to draw a monthly pension of £2,400. He had paid UK income tax on the monthly pension through PAYE and had filed UK self-assessment returns correctly — but had never filed a US return for any year of UK residence, and had not reported the £180,000 lump sum in the year he received it.

After reviewing the pension documentation, we confirmed that the pension had been funded entirely by pre-tax employer and employee contributions — none of which had been reported as US income at the time they were made — meaning the investment in the contract for US purposes was zero. The entire £180,000 lump sum was US-taxable ordinary income in the year of receipt. Furthermore, we assessed the Article 17(1)(b) treaty exemption position. We advised the client that the IRS's published guidance and audit history made reliance on the exemption a moderate-to-high audit risk for a payment of this size, recommending the conservative reporting approach of including the full lump sum in US income and maximizing the available foreign tax credit. Additionally, the client's US taxable income for the year of the lump sum — combining the lump sum equivalent of approximately $226,800 with other US-source income — placed him in the 32% and 35% brackets, producing a gross US federal income tax on the lump sum of approximately $74,600 before the foreign tax credit.

The foreign tax credit for UK income tax on the monthly pension payments of £2,400 per month — approximately £15,700 of UK income tax for the full year — provided a partial credit of approximately $19,700 against the US federal income tax on the combined pension income. Furthermore, the net US federal income tax on the lump sum after the foreign tax credit was approximately $54,900 — the dominant item in the streamlined submission. The 5% streamlined penalty on the highest aggregate balance of all UK financial accounts — approximately $280,000 across the pension account at year-end and current account balances — produced a penalty of $14,000. The total cost of the streamlined correction — tax, interest, and penalty — was approximately $76,000, compared with the IRS's published automatic failure-to-file and failure-to-pay penalty regime that would have applied to the same income if identified through FATCA data matching rather than corrected voluntarily.

Common Mistakes with UK Pension Lump Sums and US Tax

Mistake 1 — Assuming Tax-Free in the UK Means Tax-Free in the US

The most common mistake is assuming that the UK's pension commencement lump sum exemption extends to US tax, so that a payment confirmed as tax-free by the pension provider is also free of US reporting obligations. Furthermore, the IRS has no equivalent pension commencement lump-sum exemption, and the UK's domestic statutory exemption has no binding effect on the IRS's characterization of the same payment as US ordinary income. The correct approach requires a specific US tax analysis of the lump sum by a cross-border adviser before the payment is received, so that the US tax cost is known and factored into the retirement planning decision.

Mistake 2 — Relying on the Treaty Exemption Without Specific Advice

The Article 17(1)(b) treaty exemption for pension lump sums that are tax-free in the UK is a defensible position in some circumstances. Still, the IRS has challenged it in multiple cases, and the outcome depends on the specific facts of the pension and its contributions. Furthermore, many non-specialist preparers automatically apply the treaty exemption to all pension commencement lump sums without analyzing whether the contributions were excluded from US gross income — the key condition the IRS considers. The correct approach requires a specific treaty analysis for the taxpayer's specific pension before relying on the exemption. Treaty guidance is at https://www.gov.uk/government/publications/usa-tax-treaties.

Mistake 3 — Not Converting at the Date-of-Receipt Exchange Rate

The US dollar equivalent of the sterling pension lump sum must be calculated at the exchange rate on the date of receipt — not at an annual average rate. Furthermore, where the lump sum was received when sterling was relatively strong against the dollar, using an annual average rate rather than the spot rate on the date of receipt understates the US taxable income and produces an accuracy-related penalty risk if the IRS examines the return. The correct approach requires identifying the Bank of England mid-market rate on the specific date the lump sum was deposited in the account and using that rate for the US return.

Mistake 4 — Not Modeling the US Tax Cost Before Taking the Lump Sum

The pension commencement lump sum is an irrevocable decision — once taken, the amount cannot be returned to the pension and the US income tax obligation cannot be undone. Furthermore, for a US citizen in the 35% or 37% bracket, the US tax cost of a £268,275 maximum lump sum — approximately $337,600 at current rates — is approximately $118,000 to $125,000 in US federal income tax before the partial foreign tax credit, which may significantly alter the financial case for taking the full permitted lump sum in a single year. The correct approach requires a full pre-lump-sum US and UK tax modeling exercise to be conducted by a cross-border adviser at least 12 months before the intended retirement date.

Mistake 5 — Not Including the Pension in the FBAR

A SIPP or personal pension plan held with a UK insurance company is generally treated as a foreign financial account for FBAR purposes, requiring an annual FBAR filing for any year in which the account value exceeds $10,000. Furthermore, many U.S. citizens with pension accounts who file the FBAR for their UK bank accounts do not include the pension account — either because they are unaware that a pension is a reportable account or because they assume a pension is not a financial account for FBAR purposes. The correct approach requires including the SIPP or personal pension in the annual FBAR for every year the account exceeds the threshold and in the streamlined package's six-year FBAR coverage. The FBAR guidance is at https://www.fincen.gov/financial-crimes-enforcement-network/fbar.

Mistake 6 — Not Addressing Prior-Year Pension Contribution Non-Reporting

For US citizens who have been UK residents for many years, the non-reporting of a pension lump sum is often accompanied by years of unreported UK pension contribution income — specifically, employer pension contributions that may constitute taxable compensation for US purposes in the year they were made. Furthermore, addressing only the lump-sum year without reviewing prior contribution years can leave a separate category of unreported income outside the streamlined correction, which the IRS may identify through FATCA reporting of annual pension account values. The correct approach requires a comprehensive review of all pension-related US income — contributions, employer matching, annual growth — alongside the lump-sum correction to ensure the streamlined submission addresses the full scope of the non-compliance.

Get in Touch

At US-UK Tax, our team of Chartered Tax Advisers (CTA), Enrolled Agents (EA), and Certified Public Accountants (CPA) — members of the Chartered Institute of Taxation (CIOT) and the American Institute of CPAs (AICPA) — applies the US tax amnesty program for Americans abroad framework specifically for UK-resident US citizens who have taken pension commencement lump sums without US reporting. Furthermore, we conduct the full cross-border analysis — US dollar conversion at the date-of-receipt exchange rate, investment-in-the-contract calculation, treaty exemption risk assessment, foreign tax credit optimization, FBAR coverage of the pension account, and Form 14653 non-wilfulness narrative — as a coordinated streamlined submission that addresses the lump-sum year and all other pension-related non-compliance simultaneously. We also advise clients who have not yet taken their pension lump sum on the optimal US and UK tax structures for their retirement access strategy, including the treaty exemption position and the phased-versus-lump-sum income modeling.

Contact our team today to begin a confidential review of your US tax position on a pension lump sum. Email hello@us-uktax.com, call 0333-8807974, or visit https://www.us-uktax.com/contact/ to book a consultation.

Conclusion

The UK pension commencement lump sum is one of the most significant and most consistently unreported items in the US tax position of UK-resident US citizens, because the UK pension provider's confirmation of a tax-free payment does not indicate the US income tax obligation on the same amount — which is typically substantial, at the taxpayer's US marginal rate applied to the full sterling equivalent in US dollars with only a partial foreign tax credit available. Furthermore, the US tax amnesty program for Americans abroad provides a voluntary correction route for pension lump-sum recipients who have missed the US reporting obligation, with the 5% streamlined penalty on the foreign account balance typically far less costly than the automatic IRS penalty regime that would apply if the same non-compliance were identified through FATCA data matching. Moreover, pre-retirement planning that models the US tax cost of the lump-sum decision before the pension is accessed is the single most valuable service a cross-border adviser can provide to a US citizen approaching pension age in the UK.

The three most important actions for any UK-resident US citizen with a workplace or personal pension are: first, engage a cross-border specialist before taking any pension commencement lump sum, so that the US tax cost is known and the retirement access structure is optimised for both systems; second, if the lump sum has already been taken without US reporting, initiate the streamlined procedures as soon as possible before FATCA data matching identifies the payment; and third, include the SIPP or personal pension in the annual FBAR from the first year the account value exceeds $10,000, regardless of whether any distributions have been made. Contact US-UK Tax at hello@us-uktax.com or call 0333-8807974 to begin a confidential pension tax review today.

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FAQs

Q: Is the 25% pension lump sum taxable in the US for UK-resident US citizens?

Yes, in most cases. The IRS treats the pension commencement lump sum as ordinary income under IRC Section 72, since contributions were typically made pre-tax and the investment in the contract for US purposes is usually zero. The full sterling amount, converted to USD, is taxable income in the year of receipt.

Q: Does the US-UK tax treaty exempt the pension lump sum from US tax?

Article 17(1)(b) provides a potential exemption for lump sums that are tax-free in the UK. However, the IRS has challenged this position, arguing the exemption applies only where contributions were not deducted for US purposes. Specific legal advice is required before relying on the treaty exemption for a significant lump sum.

Q: What is the US tax amnesty program for Americans abroad?

It is the informal name for the IRS Streamlined Foreign Offshore Procedures — a voluntary disclosure program that requires three years of income tax returns, six years of FBARs, and a 5% penalty on the highest foreign account balance. It is the correct route for correcting unreported pension lump sums for non-wilful non-filers.

Q: How do I convert the sterling lump sum to US dollars for the IRS?

Use the Bank of England mid-market rate on the specific date the lump sum was received into your account — not an annual average rate. Document the source of the exchange rate. This spot-rate conversion is required for lump-sum payments and affects the US taxable income figure.

Q: Does the UK income tax on pension payments credit against the US tax on the lump sum?

Only partially. The foreign tax credit for UK income tax on regular taxable pension payments in the same year can partially offset the US tax on combined pension income. However, since the lump sum itself is UK-tax-free, no direct UK tax credit is available against the US tax on that payment.

Q: Must a UK SIPP be reported on the FBAR?

Yes, conservatively. SIPPs and personal pensions held with UK insurance companies are generally treated as foreign financial accounts for FBAR purposes. Annual FBAR filing is required for years in which the account value exceeds $10,000, regardless of whether any distributions have been made.