Introduction
You set up your UK Limited company through Companies House when you started consulting. You registered with HMRC for Corporation Tax. You opened a Tide or Starling business account, paid yourself a small salary and dividends, and assumed your UK tax position was handled. Nobody told you that as a US citizen, you owe the IRS Form 5471 every year for that UK Ltd, that the company's retained profits may be hit with GILTI tax, and that your UK Self Assessment as a sole trader is also a Schedule C requiring full US disclosure. Then your bank sent a FATCA letter, and the panic set in.
This guide is written for American entrepreneurs in England, Scotland, Wales, and Northern Ireland — sole traders, Ltd directors, LLP members, contractors, and freelancers — including dual US-UK citizens and Green Card holders. You will learn exactly how the IRS Streamlined Compliance Program handles your specific situation. For broader context, see our service page at https://www.taxyork.com/services/.
What Is the IRS Streamlined Compliance Program?
The IRS Streamlined Compliance Program is the working name for the Streamlined Filing Compliance Procedures, an official IRS amnesty for taxpayers whose failure to report foreign income, file US returns, or submit FBARs was non-willful — meaning negligence, inadvertence, mistake, or a good-faith misunderstanding of the law.
For Americans living in the UK, the relevant track is the Streamlined Foreign Offshore Procedures (SFOP). It covers three years of late or amended Form 1040 returns, including all related business schedules and information returns; six years of FBARs (FinCEN Form 114); and a non-willfulness certification on Form 14653. The IRS waives all failure-to-file, failure-to-pay, accuracy, information-return, and FBAR penalties. For entrepreneurs, this is enormous — Form 5471 carries a $10,000 penalty per company per year, and the IRS has been aggressive about assessing it.
UK banks and Companies House data feed into HMRC's Automatic Exchange of Information regime, so the IRS increasingly knows about your UK Ltd before you contact them. The official rules are at https://www.irs.gov/individuals/international-taxpayers/streamlined-filing-compliance-procedures.
Who Qualifies — US Entrepreneurs in the UK Explained
To qualify for SFOP under the IRS Streamlined Compliance Program, you must meet the non-residency test. In at least one of the last three years for which the US tax return due date has passed, you were physically outside the United States for at least 330 full days, and did not maintain a US abode. Almost every American genuinely running a business from the UK long-term meets this comfortably. You must also certify non-willfulness and not currently be under IRS examination or criminal investigation.
Several misconceptions specific to entrepreneurs cause real harm. The US-UK tax treaty does not eliminate Form 1040 or Form 5471 filing — it only prevents double taxation through credits. Paying UK Corporation Tax through HMRC does not replace Form 5471 for your Ltd. Operating as a UK sole trader does not eliminate Schedule C reporting on your US return. Running a small Ltd does not exempt you from GILTI under Internal Revenue Code section 951A. Confirmation of expat filing rules is at https://www.irs.gov/individuals/international-taxpayers.
What US Entrepreneurs in the UK Actually Owe — Beyond Form 1040
This is the section most articles skip, so read it carefully.
UK Limited companies and Form 5471
If you own 10% or more of a UK Ltd, you are likely a "Category 4 or 5 filer" required to submit Form 5471 every year for that company. The form discloses share ownership, officers and directors, the Ltd's balance sheet, profit and loss, retained earnings, and inter-company transactions. The penalty for not filing is $10,000 per company per year, and the IRS regularly assesses it. A UK Ltd plus a dormant holding company means two Form 5471s annually.
GILTI and Subpart F for UK Ltd owners
Suppose your UK Ltd is a Controlled Foreign Corporation (broadly: US persons own more than 50%), its undistributed earnings may be currently taxable to you under GILTI (Global Intangible Low-Taxed Income) at up to 21% even if you have not paid yourself a dividend. UK Corporation Tax credits help, but the Section 962 election and high-tax exception are technical decisions that need specialist input. Subpart F also catches passive income, such as UK rental income, inside the Ltd.
UK sole traders, contractors, and Schedule C
If you operate as a UK sole trader registered for Self Assessment, every penny of UK self-employment income is also Schedule C income on your US return — gross receipts, expenses, and net profit all flow through. You are also liable for US Self-Employment Tax (15.3%) unless you produce a US-UK Certificate of Coverage under the Totalization Agreement (https://www.ssa.gov/international/agreements_overview.html), which most UK-based sole traders are entitled to.
UK LLP members and Form 8865
If you are a member of a UK LLP, you likely need Form 8865 — the partnership equivalent of Form 5471 — with similar $10,000-per-year penalties.
UK disregarded entities and Form 8858
A single-member UK Ltd, where you have made a "check-the-box" election (Form 8832) to treat the Ltd as a disregarded entity for US purposes, requires annual Form 8858. This is a common structure for solo UK consultants and creates a separate filing obligation.
The IRS Streamlined Compliance Program sweeps all of these into a single submission. Form 5471 instructions are at https://www.irs.gov/forms-pubs/about-form-5471.
Step-by-Step: How a UK-Based US Entrepreneur Uses the Streamlined Program
First, confirm SFOP eligibility — gather travel records, UK tenancy, or HMRC residency confirmation showing 330+ days outside the US in at least one of the last three years.
Second, map your business structures. List every UK Ltd, LLP, sole trade, dormant company, holding company, and check-the-box election in place — each generates separate US filings.
Third, gather six years of UK financial records, including business and personal accounts: Tide, Starling, or Barclays business accounts, personal Lloyds or HSBC accounts, UK ISAs, NS&I, workplace pensions, and any platform investments.
Fourth, prepare three years of Form 1040 with the right elections — Form 1116 (Foreign Tax Credit) on UK earnings, Schedule C for sole trade activity, Form 5471 for each UK Ltd, Form 8858 for disregarded entities, Form 8865 for LLPs, and GILTI computations under Section 951A where the Ltd is a CFC. Add Form 8938 for FATCA and Form 8621 for any PFICs inside an ISA.
Fifth, file six years of FBARs through https://bsaefiling.fincen.treas.gov/main.html for both personal and business accounts where you are a signatory.
Sixth, draft Form 14653 — the non-willfulness certification. For entrepreneurs, this must address why business filings were missed, honestly and without describing willful conduct. Form 14653 instructions are at https://www.irs.gov/forms-pubs/about-form-14653.
The Streamlined Filing Compliance Procedures — What UK Entrepreneurs Need to Know
The Streamlined Filing Compliance Procedures run on two tracks. The Streamlined Foreign Offshore Procedures (SFOP) for non-US-resident filers waive every penalty, including the 5% offshore charge. The Streamlined Domestic Offshore Procedures (SDOP) for US-resident filers carry a 5% miscellaneous offshore penalty on the highest aggregate year-end balance.
For UK-based US entrepreneurs, SFOP is almost always the right route. The 5% penalty avoided on combined personal and business UK accounts can easily run £10,000 to £25,000, on top of waived Form 5471, FBAR, Form 8938, and Form 8621 penalties. The official Streamlined page is https://www.irs.gov/compliance/streamlined-filing-compliance-procedures.
Real UK Expat Scenario — The IRS Streamlined Compliance Program for a UK Founder
Daniel, an American software consultant in London, contacted TaxYork in early 2026 after eight years in the UK. He had moved from New York in 2018, set up a UK Ltd in 2019 through Companies House, paid himself a £12,500 salary and £25,000 in dividends annually, kept retained earnings of around £140,000 inside the company by 2025, had a Tide business account, a Starling business account, an HSBC personal account, a Marcus savings account, and a Stocks and Shares ISA at Vanguard UK holding three index funds. He had never filed in the US.
What we identified: SFOP eligibility intact, three years of Form 1040 needed, six FBARs covering five accounts, three years of Form 5471 for the UK Ltd, three years of Form 8938, three years of Form 8621 for the three PFICs, GILTI computation under Section 951A on retained earnings, a Section 962 election to apply Corporation Tax credits efficiently, Form 8833 for treaty positions, and a Form 14653 narrative.
Outcome: full IRS compliance under the IRS Streamlined Compliance Program, zero penalties (including the $10,000-per-year Form 5471 exposure across three years = $30,000 avoided), small net US tax balance from GILTI of approximately £2,800 across three years (settled via the Streamlined Installment Agreement over 36 months), and a clean strategy for future dividend timing—total professional fee approximately £5,400, against a penalty exposure exceeding £80,000. For related reading, see https://www.taxyork.com/blog/.
Key IRS Deadlines for US Expats in the UK — 2026
The standard Form 1040 due date is 15 April 2026. US citizens living abroad receive an automatic extension to 15 June 2026, with no form required, though interest on the tax owed still accrues from 15 April. A further extension to 15 October 2026 is available by filing Form 4868 by 15 June. The FBAR (FinCEN 114) due date is 15 April 2026, with an automatic extension to 15 October. Form 5471, Form 8858, Form 8865, Form 8938, and Form 8621 are all attached to Form 1040 and follow the return extension.
For Streamlined submissions, there is no calendar deadline — eligibility ends the moment the IRS opens an examination or criminal investigation. Current dates are at https://www.irs.gov/individuals/international-taxpayers/us-citizens-and-resident-aliens-abroad.
Penalties for Non-Compliance — What UK Entrepreneurs Risk
The penalty schedule for UK-based US business owners is genuinely brutal. The Form 5471 penalty is $10,000 per company per year, with continuation penalties up to $50,000 per company. Form 8865 mirrors that for LLPs. Form 8858 carries $10,000 per disregarded entity per year. FBAR non-willful penalties run up to $10,000 per form per year, and business accounts where you are a signatory count separately. Form 8938 carries $10,000 to $50,000. Failure to file Form 1040 results in a 5% penalty on the unpaid tax per month, up to 25%. GILTI underpayments are subject to accuracy penalties of 20% plus interest.
For a typical UK-based US Ltd director with one company and six years of non-compliance, total exposure routinely exceeds $80,000 to $150,000. The IRS Streamlined Compliance Program reduces all penalties to zero for qualifying non-willful filers. The IRS penalty relief overview is at https://www.irs.gov/payments/penalty-relief.
Common Mistakes US Entrepreneurs in the UK Make
Six mistakes recur in our practice. The first is filing Form 1040 with a UK accountant who has never heard of Form 5471 — producing technically complete US returns, missing six-figure information-return exposure. The second is missing GILTI entirely, leaving CFC retained earnings undeclared. The third is electing the wrong structure — failing to consider whether check-the-box treatment (Form 8832) would simplify reporting. The fourth is paying US Self-Employment Tax unnecessarily by failing to obtain a UK Certificate of Coverage under the Totalization Agreement. The fifth is missing Form 5471 attachments such as Schedule M (related party transactions) and Schedule Q (CFC income). The sixth is delaying until a FATCA mismatch from a UK business bank triggers IRS contact and ends Streamlined eligibility.
The US-UK Tax Treaty — How It Affects US Entrepreneurs in the UK
The US-UK Income Tax Convention (1975, as amended) provides useful but limited protection for entrepreneurs. Article 7 covers business profits and prevents double taxation on Ltd-level income through credit mechanisms. Article 10 governs dividend treatment. Article 17 covers pensions where the Ltd makes employer contributions. The saving clause in Article 1(4) preserves the United States' right to tax its citizens regardless of UK residence, which is why filing remains mandatory.
The US-UK Totalization Agreement (separate from the income tax treaty) governs Social Security and self-employment tax — most UK-based US sole traders qualify to pay UK National Insurance only via a Certificate of Coverage. What the treaty does not eliminate: Form 1040, Form 5471, Form 8858, Form 8865, FBAR, FATCA, or GILTI computations. The full treaty text is at https://home.treasury.gov/policy-issues/tax-policy/international-tax.
How TaxYork Helps US Entrepreneurs in the UK With the Streamlined Compliance Program
TaxYork specializes exclusively in US-UK expat tax matters and handles a significant volume of entrepreneur cases, including UK Ltd directors, LLP members, sole traders, contractors, and small business owners. Our team includes IRS Enrolled Agents and CPAs authorized to represent taxpayers before the IRS, with day-to-day experience of Form 5471 preparation, GILTI computations under Section 951A, Section 962 elections, Form 8858 disregarded entity reporting, Totalization Agreement Certificates of Coverage, and the practical realities of running a UK Ltd while a US citizen.
We handle Streamlined Compliance Program submissions for entrepreneurs end-to-end with a fixed fee quoted after a free initial eligibility call. Contact TaxYork at info@taxyork.com or https://www.taxyork.com—we help American entrepreneurs in the UK get fully IRS-compliant, almost penalty-free, through the IRS Streamlined Compliance Program.
Conclusion
Three things matter most for American entrepreneurs living in the UK. First, your filing obligations as a US citizen running a UK business stack far beyond Form 1040 — Form 5471, Form 8858, GILTI, Schedule C, FBAR, and Form 8938 are all in play, with penalties starting at $10,000 per company per year. Second, the IRS Streamlined Compliance Program under the Foreign Offshore track is purpose-built for non-willful expat entrepreneurs and waives all those penalties. Third, the window closes the moment the IRS makes contact, so timing is driven by FATCA risk rather than the calendar. Contact TaxYork for an honest eligibility assessment before any filings are made.