Introduction: Section 1244 and the Domestic Company Rule
Section 1244 hands an American investor whose company fails an ordinary deduction of up to $100,000 in a single year, yet the relief evaporates the moment that company is British rather than American. Consequently, thousands of US founders and angel investors in London subscribe for shares that can never produce the deduction their American counterparts take for granted. The rule is not obscure, and it is not discretionary. Instead, it sits in the opening words of the statute, and it disqualifies a UK limited company permanently.
At TaxYork, we see this discovered far too late. Typically, a client rings after the company has already been wound up, hoping that Section 1244 will convert a substantial loss into an immediate reduction of a seven-figure salary. Unfortunately, by that point the structure is fixed and the answer is settled.
What Section 1244 Actually Delivers
Section 1244 converts what would otherwise be a capital loss on shares into an ordinary loss, which is far more valuable. Ordinary losses reduce salary, bonus, and self-employment income directly. Capital losses, by contrast, mostly wait for capital gains that may never arrive. Furthermore, the ordinary treatment applies in the year the loss is sustained, rather than being rationed across decades.
The ceilings are set by subsection (b) of the statute. Specifically, the Section 1244 ordinary loss cannot exceed $50,000 in a taxable year, or $100,000 where a married couple files jointly. Anything above that ceiling reverts to capital loss treatment. Nevertheless, an immediate $100,000 deduction against income taxed at 35 or 37 per cent is worth real money. The full text of the provision in the United States Code confirms both figures have remained unindexed for decades.
Why Your British Company Falls Outside Section 1244
The definition in subsection (c)(1) opens with three words that decide the whole question. It defines qualifying shares as stock in a *domestic corporation* which was a small business corporation when the shares were issued. Therefore, a company incorporated at Companies House is outside the relief from the first day of its existence. No election, no treaty article, and no later restructuring can bring it back inside.
Moreover, the bar applies regardless of where the shareholder lives, how much US tax they pay, or how genuinely entrepreneurial the venture was. Accordingly, an American in Kensington who funds a British start-up is treated far worse than an American in Kansas who funds an identical one.
How Section 1244 Works for a Domestic Corporation
Understanding what you are missing matters, because the fix depends on the detail. Section 1244 is narrow, and each condition must be satisfied at a specific moment rather than continuously.
The $50,000 and $100,000 Ordinary Loss Ceilings
The ceiling is annual, not lifetime. Consequently, a taxpayer facing a $200,000 loss on qualifying shares can sometimes split the disposal across two tax years and claim $100,000 of ordinary loss in each. This planning point is well known among US practitioners, and it depends entirely on controlling the timing of the sale or the winding up.
Importantly, the ceiling belongs to the individual shareholder rather than the company. Where an individual invested through a partnership that subscribed for the shares, the relief can still reach the partner, provided the partner held the partnership interest when the shares were issued. Other holders, however, sit outside the relief entirely, because subsection (d)(4) restricts the benefit to individuals.
The $1 Million Capitalisation Test
A company qualifies only if it was a small business corporation when it issued the shares. Under subsection (c)(3), that means the aggregate amount of money and other property received by the company for stock, as a contribution to capital, and as paid-in surplus did not exceed $1,000,000. The Section 1244 test bites at the moment of issue, and a later funding round does not retrospectively disqualify shares already issued.
Nevertheless, the ordering matters enormously. Shares issued in the round that crosses the $1,000,000 line receive partial treatment under the regulations, and shares issued afterwards receive none. Therefore, early subscribers benefit and later subscribers frequently do not.
The Gross Receipts Test and the Original Issue Rule
Section 1244 also requires the company to have derived more than half of its aggregate gross receipts from active sources during its five most recent taxable years ending before the loss. Passive receipts, meaning royalties, rents, dividends, interest, annuities, and gains from selling shares or securities, count against the company. Where the company has existed for less than five years, the shorter actual period applies instead.
Finally, the shares must have been issued to you directly for money or property, and property does not include stock or securities. Shares bought from another shareholder never qualify, no matter how small the company. Additionally, the regulations under the section require a supporting statement with the return, setting out the company address, the issue date, the amount paid, and the calculation of the loss.
Why a UK Limited Company Fails Section 1244
The domestic corporation requirement is the whole story, yet its consequences reach further than most advisers appreciate. Two common escape routes also fail, and understanding why saves clients from expensive restructuring that achieves nothing.
The Domestic Corporation Requirement in Section 1244(c)(1)
A domestic corporation, for federal tax purposes, means one created or organised in the United States or under the law of a state. A private limited company registered in England and Wales, Scotland, or Northern Ireland is a foreign corporation. Consequently, it fails the first condition of Section 1244 before any of the financial tests are even considered.
Notably, a check-the-box election does not help here either. Electing to treat the UK company as a corporation for US purposes changes its classification, not its nationality. Similarly, electing S corporation status is impossible, because that regime is confined to domestic entities.
A US Holding Company Does Not Rescue the Position
Clients often propose inserting a Delaware holding company above the British trading company, then claiming a Section 1244 loss on the holding company shares. Unfortunately, that structure usually fails on the gross receipts test, because a pure holding company earns dividends and gains rather than active income.
The related worthless securities rule disappoints in the same way. Section 165(g)(3) allows a corporate shareholder an ordinary loss on securities of an affiliated company, but the affiliate must itself be a *domestic* corporation, must satisfy the 80 per cent ownership test, and must have earned more than 90 per cent of its gross receipts from active sources. Accordingly, a US parent that loses its British subsidiary is left with an ordinary capital loss under section 165(g)(1), treated as arising on the last day of the taxable year.
Section 1202 Closes the Same Door
The qualified small business stock exclusion mirrors the problem at the other end of the outcome scale. Just as Section 1244 refuses relief when a British venture fails, the gain exclusion refuses relief when a British venture succeeds. We examine that asymmetry in detail in our guide to QSBS for US founders abroad. In short, the American entrepreneur in London is penalised on both the upside and the downside.
What You Get Instead: The Capital Loss Route
Losing Section 1244 does not mean losing the deduction altogether. It means receiving a far weaker one, on a far slower schedule, with a hidden cost most people never notice.
The $3,000 Annual Cap and Indefinite Carryforward
Without Section 1244, the loss on your British shares is a capital loss. Capital losses offset capital gains without limit. Beyond that, however, only $3,000 a year reduces ordinary income, and the remainder carries forward indefinitely, as the IRS explains in its guidance on capital gains and losses. Therefore, a $600,000 loss with no offsetting gains takes two centuries to absorb.
The carryforward also has no cash value on death and cannot be transferred. Consequently, the practical difference between an ordinary loss and a capital loss for a wealthy investor is frequently the entire economic benefit of the deduction.
Timing a Worthless Security Under Section 165(g)
Where the shares become worthless rather than being sold, the loss is treated as arising on the last day of the taxable year. That deemed date matters, because it fixes the holding period and determines whether the loss is long term. Section 1244 would have made the distinction irrelevant, since ordinary treatment ignores the holding period altogether. Furthermore, the IRS expects genuine, total worthlessness, evidenced by cessation of trade, insolvency, or formal dissolution.
British procedure complicates this. A UK negligible value claim can be backdated by up to two years, whereas the US rule has no equivalent flexibility. Additionally, a company that remains registered while a liquidator works through the estate may not yet be worthless for American purposes. Our guide to negligible value claims for US investors in Britain explains how the two timelines diverge.
The Currency Effect Section 1244 Would Have Muted
Your loss is computed in dollars, not sterling, and the two legs translate at different dates. Specifically, the basis converts at the exchange rate on the day you paid for the shares, while the proceeds convert at the rate on disposal. Consequently, a weaker pound at subscription and a stronger pound at failure can shrink the dollar loss substantially, and the reverse can enlarge it.
For a domestic company, Section 1244 would have absorbed that swing within the ordinary deduction and delivered relief immediately. Here, by contrast, the currency movement simply changes the size of a capital loss that may never be used. Furthermore, HMRC guidance on capital losses computes the British figure in sterling throughout, so the two countries rarely recognise the same number.
The Sourcing Trap That Damages Your Foreign Tax Credit
Here is the point that almost no commentary covers. Losses on shares are sourced under the regulations to the class of income that a gain would have produced. For most Americans, that means the loss reduces US source income and does no collateral damage.
An American living in London faces a different rule. Where the taxpayer has a foreign tax home and the foreign country would tax the gain at a marginal rate of at least 10 per cent, the loss is allocated against foreign source income. Britain taxes share gains at up to 24 per cent, so the condition is comfortably met. Consequently, the capital loss shrinks the foreign source income in the relevant limitation category and reduces the foreign tax credit you can claim on Form 1116.
In other words, the failed investment can quietly increase your US tax bill in the very year it destroys your capital. Section 1244 would have sidestepped that outcome entirely, because an ordinary loss allocated against your foreign salary behaves very differently from a capital loss stranded in the passive category. The IRS foreign tax credit guidance for international taxpayers sets out the limitation mechanics, and the published UK capital gains tax rates confirm the British charge that triggers the foreign source allocation.
The British Relief That Fills the Gap
Britain, remarkably, offers precisely the relief that America withholds. The mirror image is striking, and it changes the arithmetic for anyone filing on both sides.
Share Loss Relief Under ITA 2007 Section 131
Share loss relief allows an individual to set what would otherwise be a capital loss against income, achieving in Britain what Section 1244 achieves in America. The shares must have been subscribed for, meaning issued by the company for cash, rather than bought from an existing holder. Furthermore, the company must be an unquoted qualifying trading company that meets the gross asset limits, and its trade must not be an excluded activity such as dealing in land, commodities, or securities.
The claim runs against income of the tax year of the loss, the previous tax year, or both. HMRC helpsheet HS286 sets out the conditions in full, and the statutory rule sits in section 131 of the Income Tax Act 2007.
Negligible Value Claims and the Two-Year Look-Back
Where the shares have not been sold, a negligible value claim treats them as sold and immediately reacquired at their negligible value. Importantly, the claim can specify a date up to two years before the tax year in which it is made, which unlocks relief in an earlier year. Meanwhile, the loss relief claim itself must be made within one year of the 31 January filing deadline for the year of the loss.
That look-back has no American counterpart, and the mismatch regularly produces relief in different years on either side of the Atlantic. Therefore, the credit position needs modelling before either claim is submitted, not afterwards.
The £50,000 or 25% Income Cap
Relief against income is capped at £50,000, or 25 per cent of adjusted total income where that is greater. High earners consequently obtain a substantial deduction. Notably, the cap does not apply to losses on shares carrying Enterprise Investment Scheme or Seed Enterprise Investment Scheme relief, which we cover in our analysis of EIS shares and the US exit trap.
Case Study: A London Founder and a Failed Venture
The arithmetic below shows what Section 1244 is worth, and what its absence costs. Consider a New York-born managing director who has lived in London since 2019 and files jointly with a British spouse who has elected to be treated as a US resident. In 2021 our client subscribed £350,000 in cash for the entire ordinary share capital of a UK fintech limited company, then subscribed a further £150,000 in 2023. The total subscription reached £500,000, roughly $620,000 at the rates used on the returns.
The venture failed in 2026. The company ceased trading, and a liquidator was appointed in September. Meanwhile, our client earned £600,000 from an unrelated executive role and realised $40,000 of capital gains on a US brokerage portfolio.
Had the company been a Delaware corporation, Section 1244 would have delivered a $100,000 ordinary loss in 2026. At a 35 per cent marginal rate, that single line saves $35,000 immediately, and the remaining $520,000 becomes a capital loss. Because the company was British, however, the entire $620,000 is a capital loss from the outset.
The 2026 American return therefore absorbs $40,000 against the realised gains, plus $3,000 against ordinary income. Consequently, $577,000 carries forward, and at $3,000 a year the deduction would outlive several generations. The lost value of Section 1244 in year one alone is $35,000.
Britain, by contrast, behaves generously. Share loss relief is capped at the greater of £50,000 or 25 per cent of adjusted total income, so £150,000 of the loss reduces income taxed at 45 per cent. That relief saves £67,500 of UK tax, and the balance of £350,000 becomes a UK capital loss.
Finally, the sourcing rule bites. Because our client has a London tax home and Britain taxes share gains at 24 per cent, the American capital loss is foreign source. Accordingly, it reduces foreign source income on Form 1116 and strands part of the credit claimed on UK tax paid on dividend and interest income that year. The failed investment consequently produced a UK saving of £67,500, an American saving of $3,000, and a modest increase in the residual US liability.
Structuring Before You Invest, Not After
Section 1244 cannot be retrofitted. Nevertheless, the outcome above is entirely avoidable when the structure is designed at subscription rather than at liquidation.
Incorporating in the United States and Trading Through a UK Branch
Where the commercial reality permits, incorporating a US corporation that trades in Britain through a registered branch preserves eligibility for Section 1244 on the founder shares. The branch pays UK corporation tax on its British profits, and the treaty governs the allocation. Admittedly, this adds compliance, including Form 5471 and related reporting, and it will not suit every venture. However, for a founder investing several hundred thousand dollars of genuine risk capital, the potential $100,000 ordinary deduction justifies serious analysis.
Considering Disregarded Treatment Instead
A UK private limited company is not on the list of entities that must be treated as corporations for US purposes. Consequently, a single American owner can file Form 8832, the entity classification election, and elect to treat it as a disregarded entity. Trading losses then flow directly onto the American return as ordinary business losses, bypassing Section 1244 altogether and avoiding the capital loss trap entirely.
The election must be made prospectively, though, because a later election triggers a deemed liquidation with its own consequences. Furthermore, disregarded treatment brings Form 8858 reporting and can disturb the UK position where other shareholders join later. Therefore, the decision belongs at incorporation.
Documenting the Share Issue From Day One
Whichever route you take, the evidence must exist before the loss arises. Keep the subscription agreement, the board minute, the bank transfer, and the share certificate. Additionally, retain the company accounts showing the capitalisation at each issue, because the $1,000,000 test is measured at that date.
For a British company, the same file supports the UK share loss relief claim, which also requires proof that you subscribed for the shares in cash. Consequently, one properly maintained record set serves both jurisdictions. Our US tax return preparation service builds that file at incorporation rather than reconstructing it years later. Where the loss does become claimable, it is reported on Form 4797 for qualifying domestic shares and on Schedule D for everything else, and IRS Publication 550 explains the worthless securities mechanics.
How TaxYork Can Help
We prepare American and British returns for founders, investment bankers, and company owners across London and the wider United Kingdom. Consequently, we see the Section 1244 problem repeatedly, and we model it before the money moves rather than after the company dies.
Our work covers the structuring decision at incorporation, the entity classification election, the American and British loss claims, and the foreign tax credit consequences that follow. Furthermore, where a client has already invested through a British company, we quantify precisely what the capital loss is worth, model the UK share loss relief, and coordinate the timing of both claims so that relief is not wasted on either side.
We also handle the catch-up work that frequently accompanies a failed venture. Where returns or foreign account reports were missed while the business consumed everything, our FBAR and FATCA compliance service brings the position current before the loss claim draws attention to it.
Conclusion
Section 1244 is one of the most valuable reliefs in the American code for entrepreneurs, and it is entirely unavailable to anyone whose company is incorporated in Britain. The domestic corporation requirement is absolute, and no holding structure, treaty article, or classification election repairs it after the fact.
Ultimately, the American in London faces a capital loss capped at $3,000 a year, a foreign source allocation that can shrink the foreign tax credit, and a British relief operating on a different timetable. Nevertheless, the position is entirely manageable when the structure is chosen deliberately. Above all, the decision must be made when you subscribe for the shares, because Section 1244 offers nothing to anyone who asks about it later.
Contact Us
If you are funding a venture in Britain, or if a British company you invested in has failed, book a consultation with our cross-border team before you file. We will tell you exactly where Section 1244 stands in your structure. Email hello@taxyork.com or call 020 3488 8606. Additionally, you can review our full range of US personal tax services online.
Disclaimer
This article provides general information about Section 1244 and cross-border loss relief. It does not constitute tax advice and should not be relied upon for any specific transaction. Tax law changes frequently, and individual circumstances vary considerably. Accordingly, you should obtain professional advice tailored to your position before acting. TaxYork accepts no liability for any action taken in reliance on this article.