Streamlined filing with a UK limited company: the 5471s inside the catch-up

Almost every guide to the IRS streamlined procedures tells you the same thing: file the three most recent delinquent returns and six years of FBARs, regardless of how many years you actually missed. For most people that is correct. If you own a UK limited company that is a controlled foreign corporation and it carries a section 965 transition tax inclusion, it is not. The IRS requires that submission to "include tax year 2017 and include all subsequent tax years" — which, filed today, is a nine-year package rather than a three-year one, with the Forms 5471 to match.

That single sentence changes the scope, the cost and the cash position of the whole exercise. It is also almost absent from the material a worried founder will find, which is why it is worth setting out properly.

The three-year rule is right, and it is not the rule that applies to you

The Streamlined Foreign Offshore Procedures ask for delinquent or amended returns for each of the most recent three years, and FBARs for each of the most recent six years for which the due date has passed, together with a Form 14653 certifying eligibility and that the failures were non-willful. The required information returns — Forms 5471 among them — go in with those returns. We have written elsewhere on why the returns window and the FBAR window are different lengths, and that remains the ordinary shape of a submission.

The IRS then carved out an exception, and it is a large one. Its page on streamlined filing compliance procedures and section 965 states that taxpayers who own specified foreign corporations and have a section 965(a) inclusion must come into compliance for the transition tax in their submission, and must include the tax year in which that inclusion occurs — generally 2017 and/or 2018 — even if that tax year would not be within the standard three-year lookback period. It then says the part that does the damage: the look-back for any such submission "must include tax year 2017 and include all subsequent tax years".

Not the inclusion year on its own. The inclusion year and everything after it. The standard window today is the three most recent tax years; a section 965 submission reaches six years further back than that.

First, the gate: is your UK company actually inside section 965?

This is where most writing on the subject goes wrong in the alarming direction, so be clear: a UK limited company is not automatically a specified foreign corporation. The term has a precise meaning in section 965(e), and it has two limbs. One covers any controlled foreign corporation. The other covers a foreign corporation with respect to which one or more domestic corporations is a United States shareholder — which, for an individual filing under streamlined, is simply unavailable. An individual owner therefore reaches specified-foreign-corporation status only through the CFC limb.

So the correct question is not "is my UK Ltd an SFC", it is a chain of three:

• Is the company a CFC? That turns on the United States shareholder test and the control test in the Code, with their constructive-ownership rules. A single American owner of a trading UK company very often satisfies them; a minority shareholder in a company owned mostly by British colleagues often does not. See our note on how the CFC rules actually work.
• If it is a CFC, was there an inclusion? Section 965 charges accumulated post-1986 deferred foreign income measured at two dates in 2017. A company incorporated later, or one that had never accumulated undistributed profits by then, has nothing to include. A dormant company has nothing to include.
• Only if both are yes does the nine-year package arrive.

There is one further trap, pointing the other way. Section 965(e)(3) excludes a passive foreign investment company that is not a controlled foreign corporation. A company can be both a PFIC and a CFC — so "it is a PFIC, therefore section 965 cannot apply" is not a safe conclusion.

The honest position for most readers is that this requires someone to look at the share register, the attribution, and the company's retained profits as they stood in 2017. That is a documents exercise, not a reading exercise, and it is the first thing we do on a streamlined engagement.

The transition tax is payable with the submission, in full

Section 965(h)(1) ordinarily lets a taxpayer pay the net transition tax liability in instalments over a number of years. The IRS states plainly that this election "is not available for taxpayers submitting delinquent returns under the streamlined filing compliance procedures".

Read that next to the fact that the charge sits on a 2017 return. The liability is historic, the cash is current, and the spreading mechanism Congress built into the provision is switched off precisely for the people least able to plan for it. For a founder whose UK company's retained profits were reinvested years ago, this is frequently the single largest number in the whole project — and it is the reason a scoping conversation should happen before anything is prepared, not after.

A related point that costs people money later: the IRS is explicit that making a streamlined submission does not constructively hand the taxpayer previously taxed earnings and profits for pre-disclosure years. Subpart F and section 956 amounts must be properly accounted for and reported; only amounts included in income before the submission, or as part of it, become PTEP. Get the Schedule P history wrong in the package and the distributions you take afterwards are taxed twice.

The 2017 Form 5471 is not the same form as the others

Here is a detail that survives into the finished package and that very little published guidance mentions. The Instructions for Form 5471 define Category 1 as a United States shareholder of a section 965 specified foreign corporation who owned that stock on the last day the corporation was such. Category 4 turns on control of the foreign corporation during its annual accounting period. Category 5 turns on being a United States shareholder of a CFC on the last day it was a CFC.

A sole American owner of a UK trading company is ordinarily a Category 4 and Category 5a filer every year — the instructions use exactly that fact pattern as their worked example, and require the whole form plus the applicable separate schedules. But in the inclusion year, Category 1 is added on top. So the 2017 form in a section 965 package is built to a wider specification than the 2023, 2024 and 2025 forms sitting behind it in the same envelope. Preparing nine identical copies of the same schedules is one of the more common ways these packages come back for more work. If you are still establishing which boxes apply to you at all, start with our walk-through of the Form 5471 filing categories, then look at how we prepare them.

The annotation changes too. The IRS asks for "Section 965" written in red at the top of the first page of each delinquent or amended return and at the top of each information return, placed after the "Streamlined Foreign Offshore" annotation — so the red ink reads Streamlined Foreign Offshore Section 965.

What a missing Form 5471 does to the statute of limitations

A great deal is written about the limitation period staying open, and most of it is imprecise. Section 6501(c)(8) provides that where information is required to be reported under a listed set of provisions — section 6038, which is Form 5471, is on that list, as are section 6038D and section 6046 — the time for assessing tax related to that information does not begin to run until the Secretary actually receives it. Until the form is filed, the clock has not started.

The nuance that matters is in the exception. Where the failure was due to reasonable cause and not willful neglect, the extended period applies only to the items related to that failure. Where it was not, it is not so confined. That is the opposite of how the point is usually presented, and it explains why the reasonable-cause and non-willfulness narrative in a submission is doing real work rather than being a formality.

The practical consequence is simple enough. Filing the forms is what closes the exposure. Quietly starting to file from this year forward leaves every earlier year open indefinitely, which is why it is not a route we will prepare.

Two things we will not tell you, and nobody honestly can

• How long it takes. The IRS does not publish a processing time for streamlined submissions, on either of its procedure pages. Any firm quoting one is quoting its own anecdote.
• That it protects you from prosecution. It does not. The streamlined procedures describe relief from civil penalties — failure-to-file, failure-to-pay, accuracy-related, information return and FBAR penalties — and that relief itself falls away if an examination finds the original non-compliance fraudulent or an FBAR violation willful. Where the facts are not comfortably non-willful, streamlined is the wrong door and a different conversation is needed first.

Where this leaves a UK company owner

Three sets of facts cover most people who read this far:

• Company incorporated after 2017, or never profitable before then. No section 965 inclusion. Ordinary streamlined package: three years of returns with the Forms 5471 attached, six years of FBARs. Scope is normal.
• A genuinely dormant company. There is a long-standing summary filing procedure for dormant foreign corporations, which reduces what a Form 5471 has to contain. It is narrow, and a company with a bank account, staff or live contracts will usually fall outside it — but it is worth testing before assuming a full form for every year.
• A profitable UK company that was already accumulating by 2017, owned by one American. This is the nine-year case, with the transition tax payable up front. It is the one to scope before committing to anything.

None of this changes the eligibility test underneath. The foreign track still requires the non-residence test to be met, and the domestic track carries a miscellaneous offshore penalty where the foreign track does not — we set the comparison out in SDOP or SFOP after moving back to the US. And the ordinary cross-border machinery of a CFC — Subpart F, the current global intangible regime, the elections that sit on top — applies to each of the years in the package, not merely to the first. Our note on which of those rules actually reach a small foreign company is the right next read.

Every streamlined package we prepare is reviewed and signed by a licensed professional — a US CPA or Enrolled Agent on the US side, working alongside UK-qualified colleagues on the company's accounts — before it goes anywhere near the client's signature. Nothing is filed on your behalf; you sign and submit, as the procedures require.

If you own a UK limited company and you have never filed a Form 5471, the question to answer first is not how many returns you owe. It is whether your company was already carrying profits in 2017. Book a consultation and we will establish that before quoting you anything; our published pricing sets out how the work is scoped once we know.

This article is general information about US and UK tax rules, not advice on your circumstances. Rules and filing positions turn on facts and documents.