Streamlined Domestic Offshore Procedures (SDOP) Case Study
Our client, a British citizen born and raised in Manchester, moved to the United States in 2012 to accept a senior engineering position at a technology company in Chicago. He obtained a green card through employer sponsorship and had been living in the US as a lawful permanent resident for over a decade.
Like many British expats, he had built a financial life in the UK long before relocating. He maintained several financial accounts that he had opened years before his move:
The total aggregate value of these accounts fluctuated but reached approximately $420,000 at its highest point during the compliance period.
He had never reported any of these accounts to the IRS. His UK accountant continued to handle his UK self-assessment tax return each year, and a US tax preparer at a well-known chain firm prepared his US return. Neither professional asked about accounts in the other country. The client assumed that because his UK accounts were "just sitting there" and he was paying UK tax through his self-assessment, everything was handled.
He only discovered the problem when a colleague at work mentioned FBAR filing requirements during a casual conversation. That evening, he searched online and realized he had a serious compliance gap.
The client's situation involved multiple layers of non-compliance, each carrying its own set of penalties and reporting requirements.
Any US person who has a financial interest in, or signature authority over, foreign financial accounts with an aggregate value exceeding $10,000 at any point during the calendar year must file a Report of Foreign Bank and Financial Accounts (FBAR) with FinCEN. The client's UK accounts far exceeded this threshold every year since his arrival in the US.
The penalties for failing to file FBARs are severe. For non-willful violations, the IRS can assess a penalty of up to $10,000 per account per year. For willful violations, the penalty jumps to the greater of $100,000 per violation or 50% of the account balance at the time of the violation. With a highest aggregate balance exceeding $400,000 across multiple years, the client's theoretical exposure to willful FBAR penalties exceeded $600,000.
Under the Foreign Account Tax Compliance Act (FATCA), US taxpayers who hold specified foreign financial assets with a total value exceeding $50,000 on the last day of the tax year, or $75,000 at any point during the year, must report those assets on Form 8938, which is filed with their individual tax return. The client's foreign assets exceeded these thresholds every year. The penalty for failure to file Form 8938 is $10,000, with additional penalties of up to $50,000 for continued failure after IRS notification.
The most technically complex aspect of this case involved the client's ISA accounts. In the UK, ISAs are celebrated as one of the best tax-advantaged savings vehicles available. All income, dividends, and capital gains earned within an ISA are completely free from UK income tax and capital gains tax. Many British citizens hold significant wealth inside ISAs precisely because of this favorable tax treatment.
The United States, however, does not recognize the tax-advantaged status of foreign savings accounts. From the perspective of US tax law, the ISA wrapper is invisible. All income earned within the ISA is fully taxable to a US person in the year it is earned.
But the problem goes deeper than simple unreported income. Most ISAs hold pooled investment funds, specifically UK-domiciled unit trusts, open-ended investment companies (OEICs), or exchange-traded funds (ETFs). Under US tax law, these foreign-domiciled funds are classified as Passive Foreign Investment Companies (PFICs).
The PFIC rules, found in Sections 1291 through 1298 of the Internal Revenue Code, impose one of the most punitive tax regimes in US law. Each PFIC holding requires the filing of a separate Form 8621 (Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund). The client's two ISA accounts contained seven separate underlying funds, meaning seven separate Form 8621 filings were required for each year.
Under the default taxation method, known as the "excess distribution" method, any gain on the sale of PFIC shares (or any distribution that exceeds 125% of the average distributions over the preceding three years) is allocated ratably over the taxpayer's entire holding period. The portion allocated to prior years is taxed at the highest marginal rate in effect for each of those years, and an interest charge is applied as though the tax had been owed since each prior year. This can result in effective tax rates exceeding 50% on PFIC gains.
The client's UK workplace pension had been growing through employer and employee contributions, and the underlying investments generated dividends and capital gains each year. While the US-UK tax treaty provides some protection for pension contributions and earnings, the reporting requirements are strict. The client had never filed Form 3520 or Form 3520-A (if required for certain pension structures), and had not reported the pension's annual investment earnings on his US return.
The Premium Bonds, while unusual in that they pay "prizes" rather than interest, are still considered a foreign financial account for FBAR purposes. Any prizes won are taxable income for US purposes. The Barclays current account, while straightforward, also required FBAR and FATCA reporting and generated small amounts of interest income that should have been reported.
In total, the client faced ten years of unfiled FBARs, unfiled Forms 8938, unfiled Forms 8621 for each PFIC, unreported foreign income across all accounts, and potential penalties that could have consumed more than the entire value of his UK holdings.
After a thorough initial consultation, Tajma determined that the IRS Streamlined Filing Compliance Procedures were the best path forward. Because the client had been living in the United States during the years of non-compliance, the appropriate program was the Streamlined Domestic Offshore Procedures (SDOP).
The SDOP requires three core elements:
The SDOP also imposes a one-time miscellaneous offshore penalty equal to 5% of the highest aggregate balance of all unreported foreign financial assets during the compliance period (the six-year FBAR period).
The first and most time-consuming step was obtaining complete account statements from all UK financial institutions for every year in the compliance period. This included annual statements from both ISA providers showing each underlying fund's holdings, transactions, dividends, and capital gains distributions. The client's pension provider was asked to supply annual statements showing contributions, investment earnings, and year-end balances. NS&I provided Premium Bond prize histories and balance confirmations, and Barclays supplied current account statements for six years.
Obtaining these records from UK institutions took approximately three weeks. Some providers were able to furnish records electronically, while others required written requests and mailed responses.
The most technically demanding part of the engagement was the PFIC analysis. The client's ISAs contained seven separate underlying funds, each of which constituted a distinct PFIC for US tax purposes. For each fund, we needed to determine the appropriate taxation method and calculate the tax due for each year.
There are three methods for taxing PFIC income under the Internal Revenue Code:
We determined that the QEF election was the optimal approach for this client. The QEF method treats the fund's earnings as current-year income, taxed at ordinary and capital gains rates as appropriate, without the punitive interest charges of the excess distribution method. While the QEF election requires access to the fund's annual information statement (or equivalent data), UK fund managers are increasingly providing this information upon request, and we were able to reconstruct the necessary data from the fund's annual reports and the client's account statements.
For the years within the amended return period, we prepared a Form 8621 for each of the seven funds for each year, totaling 21 separate Form 8621 filings across the three amended returns. Each form required detailed calculations of the fund's ordinary earnings and net capital gains, the client's pro rata share, and the resulting US tax liability.
We also executed "purging elections" for each fund to retroactively establish the QEF treatment. A purging election under Section 1298(b)(1) treats the taxpayer as if they had sold all of their PFIC shares on the last day of the year preceding the first year for which the QEF election is made, recognizing gain (but not loss) at that point. While this created some gain recognition, it eliminated the punitive excess distribution treatment going forward and produced a significantly lower overall tax liability.
We prepared three years of amended US federal tax returns (Form 1040-X), incorporating:
Separately, we prepared and filed six years of delinquent FBARs (FinCEN Form 114), reporting all four UK accounts for each year.
The non-willfulness certification is arguably the most critical component of an SDOP submission. The IRS requires the taxpayer to explain, under penalties of perjury, why their failure to report foreign financial assets and pay all tax due in respect of those assets was not willful.
In this case, the non-willfulness argument was strong. The client's narrative included several key facts:
We drafted a detailed, factual certification that documented the client's tax filing history, his reliance on professional preparers, the specific reasons he was unaware of the requirements, and the timeline of how he discovered the issue and took corrective action.
The SDOP submission was filed with the IRS approximately ten weeks after the initial engagement. The 5% miscellaneous offshore penalty was calculated on the highest aggregate balance of all unreported foreign financial assets across the six-year compliance period.
The highest aggregate balance occurred in the 2022 tax year, when the combined value of all four UK accounts reached approximately $405,000. The resulting SDOP penalty was $20,250.
The three amended tax returns showed additional US federal tax owed of approximately $8,400 across the three years. This amount reflected the PFIC income inclusions (via QEF elections), previously unreported pension earnings, Premium Bond prizes, and current account interest, offset by foreign tax credits for UK tax the client had already paid on much of this income through his UK self-assessment.
The IRS processed the amended returns and accepted the SDOP submission without further inquiry. From the date of filing to the date the amended returns were fully processed, approximately six weeks elapsed.
Beyond the immediate resolution, the engagement produced several forward-looking benefits for the client:
If you are a UK-born US resident with unreported ISAs, pensions, Premium Bonds, or other UK financial accounts, you are not alone. This is one of the most common international tax compliance issues we see, and it is entirely resolvable.
The Streamlined Filing Compliance Procedures remain available for taxpayers who can certify that their failure to report was not willful. However, these procedures can be closed or modified by the IRS at any time, and they are not available once the IRS has initiated an examination or contacted you about your foreign accounts.
The best time to act is now, before the IRS acts first.
Or call Tajma directly: (224) 331-1717
Yes. Although ISAs (Individual Savings Accounts) are completely tax-free in the United Kingdom, the United States does not recognize foreign tax-sheltered accounts. All income, dividends, and capital gains earned within a UK ISA are fully taxable for US tax purposes. Additionally, most ISAs contain pooled investment funds that are classified as Passive Foreign Investment Companies (PFICs) under US tax law, which triggers additional reporting requirements on Form 8621 and can result in punitive taxation under the default excess distribution method.
A PFIC, or Passive Foreign Investment Company, is any foreign corporation where 75% or more of its gross income is passive income, or 50% or more of its assets produce passive income. Most UK investment funds, unit trusts, and OEICs held inside ISAs qualify as PFICs. The PFIC rules impose punitive taxation on US shareholders through the default excess distribution method, which taxes gains at the highest historical marginal rate plus an interest charge. US taxpayers can avoid this punitive treatment by making a QEF (Qualified Electing Fund) or mark-to-market election, though each requires annual filings on Form 8621.
The Streamlined Domestic Offshore Procedures (SDOP) penalty is 5% of the highest aggregate balance of all unreported foreign financial assets during the compliance period. This includes foreign bank accounts, investment accounts, pensions, and any other financial assets held outside the United States. The 5% penalty applies to the single year with the highest combined balance across the 6-year FBAR lookback period. This penalty is dramatically lower than the potential willful FBAR penalties, which can reach $100,000 per violation or 50% of the account balance, whichever is greater.
A QEF (Qualified Electing Fund) election can significantly reduce the tax burden on PFIC holdings. Under a QEF election, the US shareholder includes their pro rata share of the fund's ordinary earnings and net capital gains in income each year, regardless of whether distributions are received. While this creates an annual income inclusion, it avoids the punitive interest charges and highest-rate taxation that apply under the default excess distribution method. For years that have already passed, a retroactive QEF election may be possible through a purging election, though this requires careful analysis. Going forward, a timely QEF election is almost always the preferred approach.
If the IRS discovers unreported foreign accounts before a taxpayer voluntarily comes forward, the consequences are significantly more severe. The taxpayer loses access to the Streamlined Filing Compliance Procedures entirely. Willful FBAR penalties can reach $100,000 per violation or 50% of the account balance, whichever is greater, for each year of non-compliance. The IRS may also assess accuracy-related penalties, failure-to-file penalties, and interest on all unpaid taxes. In the most severe cases, willful failure to file FBARs can result in criminal prosecution with penalties of up to $250,000 and five years of imprisonment. Coming forward voluntarily is always the better option.
The SDOP process typically takes 3 to 6 months from start to finish. The preparation phase, which includes gathering foreign account statements, calculating PFIC income, preparing amended returns, and drafting the non-willfulness certification, usually takes 6 to 12 weeks depending on the complexity of the case and how quickly the client can obtain records from foreign financial institutions. Once the submission is filed with the IRS, processing usually takes 4 to 12 weeks. The IRS does not issue a formal acceptance letter for streamlined submissions. If the IRS has questions, they will contact the taxpayer. Otherwise, the matter is considered resolved once the amended returns are processed and any penalties are paid.
Confidentiality Notice: Details have been modified to protect client confidentiality. This case study represents a composite of similar cases. Specific dollar amounts, timelines, and personal details have been adjusted while preserving the accuracy of the tax analysis, procedures used, and general outcomes achieved.
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