What is a section 367(a) gain recognition agreement?

It is a written agreement filed with a US federal income tax return under Treasury Regulation 1.367(a)-8 in which a US transferor of stock or securities to a foreign corporation agrees to recognise the gain realised but not recognised on that transfer if a triggering event occurs during the agreement term. It preserves non-recognition on an outbound stock transfer that section 367(a)(1) would otherwise tax, and it is filed together with Form 8838.

How long does a gain recognition agreement last?

The term begins on the date of the initial transfer and ends at the close of the fifth full taxable year, and not less than 60 months, following the close of the taxable year in which the transfer occurs. Separately, Form 8838 extends the period of limitations on assessment of the gain realised but not recognised through the close of the eighth full taxable year following the transfer year, so the transaction remains open to assessment for three years after the last certification.

Do I have to file anything each year after the agreement?

Yes. An annual certification must be included with a timely filed return for each of the five full taxable years following the transfer year. It states whether a gain recognition event occurred, quantifies any gain recognised, describes events that terminated or reduced the gain subject to the agreement, and describes dispositions of the transferred corporation's assets outside the ordinary course of business. A material failure to comply is itself a triggering event.

Does UK share for share relief mean there is no US tax on the exchange?

No. The two systems are independent. Section 135 of the Taxation of Chargeable Gains Act 1992 can treat a qualifying exchange as a reorganisation with no UK disposal, as HMRC explains at https://www.gov.uk/hmrc-internal-manuals/capital-gains-manual/cg52521. The US analysis under section 367(a) runs separately, and for a five-percent transferee shareholder non-recognition depends on filing a gain recognition agreement with a timely filed US return. UK rollover is permanent; the US deferral is conditional.

What happens if I forgot to file the gain recognition agreement?

Relief is available. The IRS explains at https://www.irs.gov/businesses/international-businesses/relief-for-gain-recognition-agreements that late-filing relief requires the failure not to have been willful, meaning not the result of gross negligence, reckless disregard or willful neglect. You file an amended return for each affected year with the missing documents and a supporting statement, using the original filing method, and if you are not under examination you eFax a copy to the Director of Field Operations, Large Business and International, at 855-582-4842.

Is a gain recognition agreement the same thing as Form 926?

No. Form 926 is the separate section 6038B report of an outbound transfer of property to a foreign corporation, filed with the transferor's return for the year of the transfer, as set out at https://www.irs.gov/instructions/i926. The gain recognition agreement preserves deferral; Form 926 reports the transaction. The section 6038B penalty is 10 percent of the fair market value of the property transferred, capped at 100,000 dollars unless the failure was due to intentional disregard.

Section 367(a) Gain Recognition Agreements: UK Founders

A section 367(a) gain recognition agreement is a written undertaking filed with a US federal income tax return in which a US transferor agrees to recognise the gain on an outbound transfer of stock or securities if a triggering event happens within the agreement term, and it is the mechanism that keeps an otherwise tax-free exchange tax-free when a US founder puts shares into a UK holding company. Without it, section 367(a)(1) can switch off non-recognition entirely and tax the gain in the year of the exchange. With it, the gain is realised but not recognised, and stays deferred provided the transferor files an annual certification for each of the five full taxable years that follow. The agreement is not a one-off form. It is a five-year compliance obligation that survives the deal team, the lawyers and, in the cases we clean up most often, the memory of everyone involved.

What does section 367(a) actually do to an outbound transfer?

Section 367(a)(1) is short and blunt. It provides that if, in connection with any exchange described in section 332, 351, 354, 356 or 361, a United States person transfers property to a foreign corporation, that foreign corporation shall not, for purposes of determining the extent to which gain shall be recognised on the transfer, be considered to be a corporation. The full text is at https://www.law.cornell.edu/uscode/text/26/367. Read it slowly, because the drafting is doing something unusual. It does not impose a tax directly. It removes the foreign company from the definition of a corporation for one narrow purpose, which is enough to collapse the non-recognition rule the exchange was relying on. A section 351 contribution to a company is tax-free because the recipient is a corporation. Take that away and the contribution becomes a taxable exchange of appreciated property.

The practical consequence is that every deferral rule a US founder is depending on when a UK entity is inserted above an existing business is switched off by default, and switched back on only if a specific regulatory exception applies. The regulations under section 367(a) supply those exceptions. For transfers of stock or securities, the exception that matters most is the gain recognition agreement in Treasury Regulation 1.367(a)-8, published at https://www.ecfr.gov/current/title-26/chapter-I/subchapter-A/part-1/subject-group-ECFR8ef9f402401bcc3/section-1.367(a)-8.

Three points are worth fixing early. First, section 367(a) is about outbound transfers by US persons, so it bites on US citizens and green card holders living in London just as hard as it bites on a Delaware corporation. Second, it applies to property, and stock is only one category of property. Third, a gain recognition agreement is available for stock and securities. It is not a general escape hatch for other assets, and it does nothing at all for intangibles, which are governed by section 367(d) and treated broadly as if sold in exchange for contingent payments.

When is a section 367(a) gain recognition agreement available?

The answer depends on whether the shares being transferred are shares in a foreign company or shares in a US company, and the two regimes are not symmetrical. The rules sit in Treasury Regulation 1.367(a)-3, at https://www.law.cornell.edu/cfr/text/26/1.367(a)-3.

For a transfer of stock or securities of a FOREIGN corporation, the test is ownership based. The transfer escapes section 367(a)(1) if the US transferor owns less than five percent of both the total voting power and the total value of the transferee foreign corporation immediately after the transfer, applying the attribution rules of section 318 as modified by section 958(b). If the transferor is at or above that threshold, it is a five-percent transferee shareholder and non-recognition is preserved only by entering into a five-year gain recognition agreement. This is the pattern that catches UK group reorganisations: a US founder who already holds shares in a UK trading company contributes them to a newly formed UK holding company and, because the founder owns well over five percent of the new holdco, the agreement is mandatory.

For a transfer of stock or securities of a DOMESTIC corporation to a foreign corporation, which is what happens when a US operating company is dropped under a UK topco, Treasury Regulation 1.367(a)-3(c)(1) imposes four cumulative conditions, all of which must be met:

Fifty percent or less of both the total voting power and the total value of the transferee foreign corporation stock is received in the transaction, in the aggregate, by US transferors
Fifty percent or less of each of the total voting power and the total value of the transferee foreign corporation is owned, in the aggregate, immediately after the transfer by US persons who are officers or directors of the US target or who are five-percent target shareholders, so that there is no US control group
Either the US transferor is not a five-percent transferee shareholder, or it enters into a five-year gain recognition agreement under Treasury Regulation 1.367(a)-8
The active trade or business test is satisfied, which requires an active trade or business conducted outside the United States for the entire 36-month period immediately before the transfer, no intention to substantially dispose of or discontinue that business, and satisfaction of the substantiality test comparing the fair market value of the transferee foreign corporation with that of the US target

The gap between those two regimes is where founders get hurt. A gain recognition agreement is a complete answer for a five-percent shareholder transferring foreign stock. It is only one of four conditions when the target is a US company. A newly incorporated UK holding company with no trading history of its own will not have been carrying on an active trade or business abroad for the previous 36 months, and a shell holdco will rarely be substantial relative to a valuable US target. In that structure the agreement alone does not save the exchange, and the transaction has to be modelled as taxable unless it is redesigned. A five-percent transferee shareholder, for this purpose, is a person that owns at least five percent of either the total voting power or the total value of the transferee foreign corporation stock immediately after the transfer.

What must the agreement contain, and where is it filed?

The regulation is prescriptive about form, and the form is where returns fail. The document must carry the heading GAIN RECOGNITION AGREEMENT UNDER 1.367(a)-8, using the section symbol, and must set out the required items under corresponding paragraph numbers. Those items include a statement that the document constitutes an agreement by the US transferor to recognise gain in accordance with the requirements of the regulation, a description of the transferred stock or securities and of the parties, a statement agreeing to comply with all the conditions of the section, to extend the period of limitations on assessment and to file the required annual certifications, and a statement that arrangements exist to ensure the US transferor is informed of any triggering event.

The agreement must be included with a timely filed return of the US transferor for the taxable year during which the initial transfer occurs, and it must be completed in all material respects. A return filed late, or an agreement bolted on afterwards, is a failure to file that has to be cured through the relief procedure described later in this article rather than simply corrected.

Alongside the agreement, the transferor files Form 8838, which the IRS describes at https://www.irs.gov/forms-pubs/about-form-8838 as the consent to extend the time to assess tax, used for gain recognition agreements under sections 367(a) and 367(e)(2). Its practical effect is to extend the period of limitations on assessment with respect to the gain realised but not recognised on the initial transfer through the close of the eighth full taxable year following the taxable year during which the initial transfer occurs. That is worth restating for anyone who has assumed the exchange goes quiet after three years. The transaction stays open to assessment for eight full taxable years, which is three years beyond the five-year agreement term. The IRS has deliberately given itself a window to examine the transfer after the last certification has been filed.

How long does the agreement run, and what is the annual certification?

The agreement term begins on the date of the initial transfer and ends at the close of the fifth full taxable year, and not less than 60 months, following the close of the taxable year in which the initial transfer occurs. Because the clock starts from the close of the transfer year rather than the transfer date itself, the real exposure period for a transfer made early in a tax year is close to six years.

For each of those five full taxable years the US transferor must include an annual certification with its timely filed return. The certification is not a tick box. It has to state whether a gain recognition event occurred during the taxable year and, if one did, quantify the gain subject to the agreement, the gain recognised and any reduction. It must also describe events that terminated or reduced the amount of gain subject to the agreement, and describe any disposition of the transferred corporation's assets outside the ordinary course of business. In other words, the founder is reporting annually on what the UK company did with its business, not merely confirming that the shares have not been sold.

The failure mode we see most often is not a bad first filing. It is year three. The agreement is drafted properly, the first certification is filed by the firm that ran the transaction, the founder changes preparer, and the certification silently stops. Because a failure to comply with the requirements of the section in any material respect is itself a triggering event, a missed certification is not a paperwork slip. It is capable of accelerating the entire deferred gain.

Which events trigger the gain, and which do not?

Triggering events are listed in paragraph (j) of the regulation. The recurring categories that matter to a founder-owned UK group are:

A complete or partial disposition of the transferred stock or securities
A disposition of substantially all of the assets of the transferred corporation, subject to carve-outs for sales in the ordinary course of business, certain section 354 exchanges in asset reorganisations and complete liquidations under section 332
A disposition of the transferee foreign corporation stock that the US transferor received in the initial transfer
Deconsolidation, where the US transferor ceases to be a member of a consolidated group, and consolidation, where it becomes one
The death of an individual US transferor
A failure to comply with the requirements of the regulation in any material respect
Dispositions in indirect stock transfers and triangular reorganisations, and any event specifically identified as a triggering event in a new agreement

Paragraph (k) then sets out a long list of exceptions, and the design principle behind all of them is the same: if the US transferor's economic exposure to the transferred stock continues in a nonrecognition transaction, the deferral can continue, but only if a new gain recognition agreement is filed to carry the obligation forward. Exceptions of this kind cover transfers of the transferee foreign corporation stock in a section 351, section 354 or section 721 transaction, certain recapitalisations under section 368(a)(1)(E) and section 1036 exchanges, asset reorganisations where the acquiring corporation is designated in the new agreement, complete liquidations under sections 332 and 337 to a domestic corporate distributee, deconsolidation and consolidation, and the death of the US transferor where sufficient assets are retained, security is provided or a ruling is obtained. Where an exception applies and a new agreement is filed, that new agreement is filed in lieu of the annual certification otherwise required for that year.

This is the single most misunderstood feature of the regime. A founder who reorganises the UK group in year four and is told the step is a nonrecognition transaction often hears that as no US filing. It is the opposite. The exception is conditional on a new agreement being filed, and if that agreement is not filed the exception is not available, the step is a triggering event, and the original gain accelerates.

How is the gain reported if a triggering event happens?

The amount at stake is the gain realised but not recognised on the initial transfer by reason of entering into the agreement. On a partial disposition, the transferor recognises a proportionate amount of that gain, determined by reference to the fair market value of the stock, securities or partnership interest disposed of compared with the fair market value of the whole, both measured at the time of the partial disposition. Note that the proportion is measured at the disposal date and not at the date of the original transfer, so a holding that has appreciated unevenly will not produce an intuitive fraction.

The default reporting position is that the gain goes on an amended federal income tax return for the taxable year of the initial transfer, not the year of the triggering event. That matters commercially, because interest is payable on any additional tax at the rates set under section 6621, running from the original due date of the return for the transfer year. A founder who triggers in year five is paying interest across five years. The regulation permits an election, made in the original agreement, to instead recognise the gain in the year of the triggering event. That election has to be made at the outset. It is not available with hindsight, and deciding it is one of the few genuinely strategic choices in the whole exercise.

How does Form 926 fit alongside the agreement?

Form 926 is the companion report, not a substitute. It is the return by a US transferor of property to a foreign corporation required under section 6038B, and the instructions at https://www.irs.gov/instructions/i926 confirm it is filed with the US transferor's income tax return for the tax year that includes the date of the transfer. Where a partnership makes the transfer, it is the domestic partners rather than the partnership who comply with section 6038B. Where a gain recognition agreement is filed, Form 926 has to be completed with the supplemental information about the transferee corporation that the instructions call for.

The two obligations are separate and carry separate consequences. The penalty for a section 6038B failure is 10 percent of the fair market value of the property at the time of the transfer, capped at 100,000 dollars, with the cap removed where the failure to comply was due to intentional disregard. Separately, where the transfer is not reported, the period of limitations for assessment of tax on the transfer of that property is extended to the date that is three years after the date on which the required information is provided. So an unreported outbound transfer produces an open-ended assessment window on top of a percentage penalty, entirely independently of whether the deferral itself survives.

How does the UK treat the same share exchange?

The UK analysis runs on a completely different logic, and the mismatch is where cross-border founders lose money. Under section 135 of the Taxation of Chargeable Gains Act 1992, a qualifying share for share exchange is treated as a reorganisation, so the shareholder is not treated as disposing of the old shares and the new shares are treated as acquired at the same time and for the same cost. HMRC's Capital Gains Manual explains at https://www.gov.uk/hmrc-internal-manuals/capital-gains-manual/cg52521 that an essential feature is that the acquiring company actually issues shares or debentures, and that the relief does not apply to a straight swap of shares that have already been issued.

The conditions are set out at https://www.gov.uk/hmrc-internal-manuals/capital-gains-manual/cg52523 and are met in one of three cases: the acquiring company holds, or as a consequence of the exchange will hold, more than one quarter of the ordinary share capital of the target; the shares are issued as a result of a general offer made to the members of the target on a condition which if satisfied would give the acquirer control; or the acquiring company holds, or will hold, the greater part of the voting power of the target.

There is then an anti-avoidance rule and a statutory clearance route. Clearance applications are made by emailing reconstructions@hmrc.gov.uk, and HMRC states at https://www.gov.uk/guidance/apply-for-statutory-clearance-for-a-transaction that it will reply within 30 days, and within 30 days of any reply where further information is requested. The rule itself has changed. The measure published at https://www.gov.uk/government/publications/capital-gains-tax-share-exchanges-and-reorganisations/capital-gains-tax-anti-avoidance-for-share-exchanges-and-reorganisations amends sections 137(1), 139(5) and 103K(1) of the 1992 Act so that the test looks at whether the main purpose, or one of the main purposes, of the arrangements was to secure the shareholder a tax advantage, rather than at the purpose of the overall reorganisation. It applies to an issue of shares or debentures made on or after 26 November 2025, with a transitional rule for clearance applications received before that date. Any UK holding company insertion completed after that point should be clearance-tested against the new wording, not the old.

One further UK rule catches founders in exactly this position. Where a participator who, with associates, holds a material interest of more than 5 percent in a UK close company receives securities in a non-UK company that would be close if it were UK resident, HMRC's guidance at https://www.gov.uk/hmrc-internal-manuals/capital-gains-manual/cg52637 explains that the new securities are treated as located in the United Kingdom. An election is available to disapply the rule, which triggers a gain or loss at the time of the exchange, and it must be made by 31 January following the tax year in which the non-UK company securities are issued. That election deadline and the US return deadline that carries the gain recognition agreement fall in different months and belong to different advisers, which is precisely why they get missed.

The structural point is this. UK section 135 treatment, once available, is permanent rollover. The US gain recognition agreement is conditional deferral with a five-year tail and an eight-year assessment window. The same transaction is closed on one side of the Atlantic and open on the other. Assuming symmetry is the mistake.

A worked scenario

The following figures are illustrative only and are used to show the mechanism. Assume a US citizen resident in London holds 40 percent of a UK trading company. In the illustration her shares have a basis of 200,000 dollars and a value of 5,000,000 dollars, so realised gain is 4,800,000 dollars. Assume an exchange rate is applied consistently and that all values are converted on the same basis. A new UK holding company is formed, and all shareholders exchange their shares for shares in the holdco in the same proportions.

On the UK side, if the section 135 conditions are met and the anti-avoidance rule does not apply, she has no disposal and her holdco shares carry the original base cost. On the US side, this is a transfer of foreign corporation stock to a foreign corporation, section 367(a)(1) applies by default, and because she holds 40 percent of the holdco she is a five-percent transferee shareholder. Non-recognition is preserved only if a gain recognition agreement is filed with her timely filed return for the transfer year, together with Form 8838 and Form 926. She then files annual certifications for the following five full taxable years. If in year four the group sells the trading subsidiary and the sale is a disposition of substantially all of the transferred corporation's assets outside the ordinary course, the deferred 4,800,000 dollars becomes recognisable, by default on an amended return for the transfer year with interest under section 6621 from that year's original due date. If instead the holdco shares are sold in a further nonrecognition exchange and a new gain recognition agreement is filed, the deferral continues and the new agreement replaces that year's certification.

What if the agreement was never filed?

This is the position most people arrive in. The exchange happened three years ago, the UK adviser handled the reorganisation, nobody filed anything with the US return, and the founder has just discovered that a transaction everybody described as tax neutral was, on the US side, a taxable exchange from day one.

Relief exists, and it is not discretionary in the informal sense. The IRS sets out the route at https://www.irs.gov/businesses/international-businesses/relief-for-gain-recognition-agreements. There are two distinct forms of relief with two distinct standards. Late-filing relief, which preserves the deferral, requires that the failure to comply was not willful, meaning it did not stem from gross negligence, reckless disregard or willful neglect. Penalty relief, which addresses the section 6038B exposure, requires reasonable cause and not willful neglect. They are separate tests and a taxpayer can meet one and not the other.

The mechanics are as follows:

File an amended return for each affected tax year, including the missing gain recognition agreement documents and a separate statement supporting the position
Use the original filing method: if the original return was mailed, mail the amended return to the same IRS service centre; if it was e-filed, e-file the amended return unless that tax year is no longer accepted electronically
If not under examination, eFax a copy of the amended return to the Director of Field Operations, Large Business and International, at 855-582-4842
If under examination, provide the copy to the examining agent instead
Be prepared to extend the assessment period on Form 8838, and to file the certifications for every year that has already passed since the transfer

In the remediation files we prepare, the statement supporting the not willful position is the document that does the work. It should establish who was engaged, what they were engaged to do, what the taxpayer was told, when the omission was discovered and what was done immediately on discovery. A founder who instructed a UK corporate solicitor for a UK reorganisation and had no US return preparer involved in the transaction is in a materially different position from one who was advised of the filing and let it slide, and the file should show which of those is true. Waiting does not improve the position, because a continuing failure to comply is itself a triggering event under the regulation.

The five-year calendar we run on every gain recognition agreement

Because the obligation outlives the transaction, it needs an owner. The controls that actually prevent accelerated gain are unglamorous:

A dated schedule of the five certification years, recorded on the transfer year file and carried forward with the client, not held only by the firm that ran the deal
A copy of the executed agreement, the Form 8838 and the Form 926 kept with the permanent records, because the certifications have to reference the original terms
An annual written enquiry to the UK group covering asset disposals outside the ordinary course, changes in the holding structure, group reorganisations and any change in the shareholder's own holding
A standing instruction that any proposed reorganisation, refinancing or partial share sale is checked for triggering event status before completion, not after
A note of whether the election to recognise gain in the year of a triggering event was made, since it changes the interest exposure entirely
A diary entry for the close of the eighth full taxable year following the transfer year, because the assessment window remains open until then

Two further traps deserve naming. The death of an individual US transferor is a triggering event unless an exception applies, so a founder-owned structure carrying a gain recognition agreement has an exposure that has nothing to do with commercial decisions. And a US shareholder who moves into or out of a consolidated group during the term will hit the deconsolidation or consolidation triggering events, both of which have exceptions available only if a new agreement is filed.

How we prepare these returns

In the returns we prepare, a UK holding company insertion involving a US shareholder is treated as a single cross-border filing package rather than two national exercises. That means the section 367(a) analysis is done before the exchange is documented, so that the choice between a five-percent transferee shareholder position, a redesign, or an accepted taxable event is made deliberately. It means the gain recognition agreement, Form 8838 and Form 926 are drafted alongside the UK clearance application rather than after it. It means the election on the timing of any future gain recognition is decided with the founder, not defaulted. And it means the five certification years are calendared on day one.

Our cross-border work for founders and shareholders in this position is set out at us-uktax.com/cross-border-tax-planning, corporate structuring at us-uktax.com/business-corporate-tax-planning, and transatlantic group expansion at us-uktax.com/us-uk-business-expansion. Where a US filing history has already gone wrong and the exposure is historic rather than prospective, the remediation routes are described at us-uktax.com/irs-streamlined-filing.

The regime rewards precision and punishes assumption. A section 367(a) gain recognition agreement is not difficult to get right at the time of the transfer. It is expensive to get wrong five years later, when the gain has been accelerated back to the transfer year and interest has been running the whole time.