IRC 355 Corporate Spin-Offs and Split-Offs: Active Trade or Business, Device Test, Anti-Morris Trust, and Business Purpose Requirements

Section 1: Overview of Spin-Off, Split-Off, and Split-Up Structures

IRC 355 provides a nonrecognition framework for "divisive reorganizations" -- transactions in which a single corporate group is separated into two or more independent corporate entities. Three primary transaction forms qualify under IRC 355, each with distinct exchange mechanics and resulting ownership structures.

The Spin-Off

In a spin-off, D distributes C stock pro-rata to all of D's shareholders. No exchange of D stock occurs; D shareholders simply receive additional C shares alongside their existing D shares. Because no shareholder surrenders anything, the spin-off is the simplest divisive structure. It is analogous to a stock dividend, except that IRC 355(a) provides for nonrecognition rather than dividend treatment under IRC 301, provided all qualification requirements are satisfied.

The Split-Off

In a split-off, D distributes C stock to SOME (not all) of D's shareholders in exchange for those shareholders surrendering their D stock. From D's perspective, this is a redemption of D stock. Participating shareholders exit their D equity position and receive C stock in return. Under IRC 355(a), the exchange qualifies for nonrecognition if the applicable requirements are met, and the shareholders who participate recognize no gain or loss (except to the extent of any boot received under IRC 356). The split-off is commonly used in shareholder dispute situations, where one faction of shareholders wishes to continue with D and another wishes to take C.

The Split-Up

In a split-up, D distributes ALL of its assets (in the form of stock of two or more controlled corporations) to D's shareholders and then D liquidates. Both IRC 355(a) and IRC 368(a)(1)(D) govern the split-up mechanics. Because D itself ceases to exist following the distribution, the split-up is the most structurally complex of the three forms and requires careful coordination of the liquidation, the asset transfer to the controlled corporations, and the distribution of controlled corporation stock to D's shareholders.

Common Requirements

Regardless of which divisive form is used, all three transaction types must satisfy the same statutory qualification requirements under IRC 355: the four-part test (control, active trade or business, no device, and business purpose), as well as the anti-abuse provisions of IRC 355(d) and IRC 355(e). The choice of spin-off, split-off, or split-up affects the exchange mechanics and resulting ownership structure but does not change the underlying tax qualification analysis.

Section 2: The Active Trade or Business (ATB) Requirement

The ATB requirement under IRC 355(b) is frequently the most difficult qualification hurdle in practice. The requirement applies independently to both D and C: each must satisfy it on its own, and a deficiency in either corporation's ATB analysis disqualifies the entire distribution.

The 5-Year Pre-Distribution Period

Both D's ATB and C's ATB must have been actively conducted for at least 5 consecutive years immediately before the distribution date. IRC 355(b)(1) and (2). The 5-year period is measured on a rolling basis from the date of distribution, so a business commenced exactly 5 years before distribution (to the day) may satisfy the requirement. Practitioners should document the exact commencement date of each business activity and confirm that 5 full years of active conduct have elapsed before distribution.

What Constitutes an "Active" Trade or Business

The corporation (or, under the look-through rule discussed below, a member of its qualified group) must have directly conducted and actively participated in the management and operation of the trade or business. Treas. Reg. 1.355-3(b). Passive investment activities -- such as holding a portfolio of stocks, bonds, or rental real estate -- do NOT satisfy the ATB requirement. The relevant inquiry is whether the corporation has employees, operations, customers, contracts, and management activities constituting a real business rather than a holding arrangement.

Under Treas. Reg. 1.355-3(b)(2), a "trade or business" for this purpose means a specific group of activities being carried on by the corporation for the purpose of earning income or profit from those activities, including the steps ordinarily necessary to carry on the trade or business. The activities must be sufficient in scope and character to constitute an independent trade or business; a mere preparatory or startup stage does not qualify.

The Holding Company ATB Problem: Qualified Group Look-Through

A holding company that merely holds stock in subsidiaries generally does NOT independently satisfy the ATB requirement, because the mere ownership of stock is a passive investment activity rather than an active business operation. However, Treas. Reg. 1.355-3(b)(4) provides the "qualified group" look-through rule: D or C may look through to its ownership of subsidiaries to treat the subsidiary's ATB as D's or C's ATB, provided that D or C owns 80% or more of each subsidiary in the qualified group (by vote and value).

The 5-Year Taint Rule: Taxable Acquisitions Within the Pre-Distribution Period

Even if D or C has conducted a trade or business for 5 years, the ATB is "tainted" and disqualified if D or C acquired that ATB (or a material portion of it) in a taxable transaction within the 5-year pre-distribution period. IRC 355(b)(2)(C) and (D).

The taint rule targets "bootstrap" acquisition strategies: a corporation cannot acquire a business in a taxable transaction (getting a stepped-up basis and recognizing gain at the target level), wait the statutory period, and then spin it off tax-free. The policy rationale is that taxable acquisitions reset the holding period, and the 5-year ATB requirement is intended to prevent recently purchased businesses from being spun off as if they were long-standing corporate operations.

Business Expansion Within an Existing ATB

A corporation may expand an existing qualifying ATB within the 5-year period -- by acquiring additional assets, entering new markets, or adding product lines -- without tainting the ATB, provided the expansion is a continuation of the existing business rather than the acquisition of a new and distinct business. Treas. Reg. 1.355-3. The line between a permissible business expansion and a disqualifying new business acquisition is inherently facts-and-circumstances dependent. The IRS has scrutinized cases where an acquired entity substantially transforms the business post-acquisition, and practitioners should document the continuity between the pre- and post-expansion business in anticipation of IRS review or PLR requests.

Size and Scope of the ATB

Neither the statute nor the regulations impose a minimum revenue, asset, or employee threshold on the ATB. The IRS and courts have generally focused on the nature and continuity of business activity rather than its economic size. A small but genuine operating business with employees and customers satisfies the requirement; a large passive investment portfolio does not. All ATB determinations are highly fact-specific and should be confirmed with qualified tax counsel before the transaction closes.

Section 3: The Device Test and Business Purpose Requirement

The Device Test Under IRC 355(a)(1)(B)

The distribution must not be "principally a device for the distribution of earnings and profits" of D or C. IRC 355(a)(1)(B). The device test addresses a structural concern: without it, a corporation with substantial accumulated E&P could distribute that E&P to shareholders in the form of C stock (at capital gain rates rather than ordinary income dividend rates), circumventing the shareholder-level dividend tax policy of IRC 301.

The device determination is a facts-and-circumstances analysis governed by Treas. Reg. 1.355-2(d), which identifies both "device factors" (facts that indicate the distribution is a device) and "non-device factors" (facts that indicate otherwise). No single factor is dispositive; the IRS weighs all relevant facts.

A transaction that fails the device test is treated as a taxable distribution of E&P (to the extent of E&P) under IRC 301, with the fair market value of the C stock distributed treated as the amount of the distribution. Hedge all device failure consequences to IRC 301 and applicable regulations.

The Business Purpose Requirement

Separate from (but closely related to) the device test, a qualifying IRC 355 distribution must have a genuine corporate business purpose. Treas. Reg. 1.355-2(b). This requirement was judicially developed (building on the "business purpose" doctrine of Gregory v. Helvering, 293 U.S. 465 (1935)) and is now codified in the regulations. The business purpose must be a corporate-level motivation, not primarily a benefit to individual shareholders.

Examples of valid corporate business purposes recognized in IRS guidance and PLR practice:

• Separating businesses with different risk profiles to facilitate independent financing or access to capital markets on terms appropriate to each business
• Complying with regulatory or legal restrictions that prohibit both businesses from being conducted within a single corporate entity
• Resolving genuine shareholder disputes by separating the competing factions into independent enterprises
• Satisfying requirements imposed by government regulators (including antitrust authorities) as a condition of approval of another transaction

The Overlap Between the Device Test and Business Purpose

The device test and the business purpose requirement interact closely. A very strong corporate business purpose is itself a non-device factor, and a transaction with no anticipated post-distribution sale, a compelling operational rationale, and no disproportionate E&P has minimal device risk. Conversely, a pro-rata distribution with an immediate pre-arranged sale of C stock represents the highest-risk device fact pattern and will typically fail both the device test (device factors strongly present) and the business purpose requirement (the purpose is shareholder-level sale proceeds, not corporate benefit). Practitioners should analyze both requirements together, not in isolation.

Section 4: Anti-Morris Trust -- IRC 355(d) and IRC 355(e)

Historical Background: The Morris Trust Structure

Before the 1997 anti-Morris Trust legislative amendments, a buyer (A) could acquire D in a taxable transaction, cause D to spin off C tax-free under IRC 355, and then have C merge into A -- effectively allowing A to acquire C in a tax-free transaction while retaining D through the original taxable acquisition. This strategy (derived from Commissioner v. Mary Archer W. Morris Trust, 367 F.2d 794 (4th Cir. 1966)) allowed purchasers to use the IRC 355 framework to convert what was economically a taxable acquisition into a partially tax-free transaction. Congress enacted IRC 355(d) and IRC 355(e) in 1997 to eliminate this result.

IRC 355(d): Disqualified Distributions Based on Past Acquisitions of D Stock

Under IRC 355(d), a distribution is a "disqualified distribution" (and D must recognize gain as if C stock were sold at FMV) if, immediately after the distribution, any "disqualified person" holds "disqualified stock" in D representing 50% or more of D's stock (by vote or value). IRC 355(d)(2) and (3).

"Disqualified stock" in D is any D stock acquired by purchase (that is, in a taxable transaction) during the 5-year period ending on the distribution date. A "disqualified person" is any person who holds such disqualified stock. The provision is triggered by PAST acquisitions of D stock, not by anticipated future transactions. It prevents the scenario where a buyer acquires D in a taxable transaction (within the prior 5 years) and then causes D to spin off C as a tax-free distribution, effectively allowing the buyer to acquire C through D's tax-free distribution capacity.

IRC 355(e): Post-Distribution Acquisitions Pursuant to a Plan

Under IRC 355(e), if C or D is acquired by any person as part of a "plan" that includes the IRC 355 distribution, D must recognize gain as if the C stock were sold at FMV at the time of the distribution. IRC 355(e)(1) and (2). Unlike IRC 355(d) (which looks backward at past acquisitions of D), IRC 355(e) looks at both pre- and post-distribution acquisitions of C or D that are connected to the IRC 355 distribution by a "plan."

The "Plan" Determination Under Treas. Reg. 1.355-7

The central analytical question under IRC 355(e) is whether the acquisition of C or D was part of the same "plan" as the IRC 355 distribution. Under Treas. Reg. 1.355-7, the plan determination is a facts-and-circumstances analysis. Key considerations include:

• Whether D or C had discussions with potential acquirers before or during the planning of the distribution
• Whether a binding commitment to sell C or D existed at the time of the distribution
• The temporal proximity of the acquisition to the distribution
• Whether the distribution would have occurred absent the anticipated acquisition

The "plan" generally covers acquisitions occurring within 2 years before or after the distribution. An acquisition occurring more than 2 years after the distribution is presumed NOT part of the same plan (subject to rebuttal by the IRS based on facts and circumstances). Treas. Reg. 1.355-7. A binding commitment to sell C at the time of the distribution is considered strong evidence of a plan connecting the distribution and the acquisition.

IRS Ruling Practice on Anti-Morris Trust Issues

The IRS will not issue advance rulings on the device test or business purpose if there is a specific contemplated acquisition at the time of the ruling request. In practice, where a client is planning a spin-off in connection with a sale or merger of C or D, an IRS PLR provides limited protection. Practitioners should not assume that IRS advance ruling availability translates to coverage of IRC 355(e) exposure in pre-arranged acquisition contexts. The combined IRC 355(d) and (e) analysis is a critical diligence item in any spin-off involving a prior or contemplated sale of either entity.

Section 5: Tax Consequences -- D, C, and Shareholders

Tax Treatment of D (Distributing Corporation)

In a qualifying IRC 355 distribution, D does NOT recognize gain or loss on the distribution of C stock to D's shareholders. IRC 355(c)(1). This is a significant departure from the general rule of IRC 311(b), which would otherwise require D to recognize gain on any distribution of appreciated property. The nonrecognition at the D level is conditioned on the distribution satisfying all of the IRC 355 qualification requirements; if any requirement fails, gain recognition under IRC 311(b) applies to the full FMV of the C stock distributed.

D's E&P is reduced (rather than eliminated) after the qualifying distribution. Under IRC 312(h) and Treas. Reg. 1.312-10, D's accumulated E&P is allocated between D and C proportionately based on the net value of each entity's assets (or, in some circumstances, proportionally to the FMV of D's and C's stock). This allocation can significantly affect each entity's future dividend capacity and the tax treatment of future distributions to shareholders. Hedge all E&P allocation specifics to IRC 312(h) and Treas. Reg. 1.312-10.

Tax Treatment of C (Controlled Corporation)

In a qualifying Type D reorganization, C generally takes a carryover basis in the assets transferred from D, equal to D's adjusted basis in those assets immediately before the transfer. Treas. Reg. 1.358-2. The carryover basis affects C's post-distribution depreciation (C depreciates transferred assets from D's existing basis, not from FMV), cost recovery calculations, and potential gain or loss on future dispositions of the transferred assets. Practitioners should prepare a detailed asset-by-asset basis schedule for all transferred assets and assess built-in gain or loss exposure at C.

C's tax attributes -- including net operating loss carryforwards (NOLs), tax credits, and capital loss carryforwards -- generally survive the spin-off and remain with C. However, if the spin-off results in an "ownership change" at C (within the meaning of IRC 382), C's use of pre-change NOLs is subject to the annual IRC 382 limitation. See the IRC 382 NOL Limitation and Ownership Change Practitioner Guide for the ownership change testing rules and NUBIG/NUBIL mechanics that apply post-spin.

If C is (or later becomes) an S corporation and holds assets with built-in gains at the time of the S election, the built-in gains tax under IRC 1374 may apply to dispositions of those assets within the recognition period. See the IRC 1374 Built-In Gains Tax Practitioner Guide for the recognition period rules and calculation mechanics relevant to C's post-spin S election or asset dispositions.

Tax Treatment of D's Shareholders

In a qualifying spin-off, D's shareholders do NOT recognize gain or loss on receipt of C stock. IRC 355(a). In a qualifying split-off (exchange of D stock for C stock in a Type D reorganization), D's shareholders likewise do not recognize gain or loss on the exchange under IRC 354(a). This nonrecognition at the shareholder level is the central economic benefit of an IRC 355 qualifying distribution.

Boot: Gain Recognition Under IRC 356

If D's shareholders receive "boot" -- other property or money -- in addition to C stock in the distribution or exchange, gain is recognized to the extent of the boot received. IRC 356. The character of the recognized gain (capital gain vs. ordinary income) depends on whether the exchange has the effect of a distribution of a dividend, determined under the principles of IRC 302. Practitioners must carefully characterize any boot in the exchange and advise shareholders accordingly.

Basis Allocation Between D and C Stock

After a qualifying spin-off, the shareholder's existing basis in D stock is allocated between the D stock retained and the C stock received, based on the relative FMV of D and C stock at the time of the distribution. Treas. Reg. 1.358-2. For example:

• Shareholder holds D stock with an aggregate adjusted basis of $100,000
• At the time of distribution, D stock (retained) has a total FMV of $600,000 and C stock (received) has a total FMV of $400,000
• Total combined FMV: $1,000,000
• Allocation: 60% of basis ($60,000) is allocated to D stock; 40% ($40,000) is allocated to C stock received

The holding period of the C stock received tacks onto the shareholder's holding period in the D stock surrendered (for long-term capital gain purposes), provided the C stock received is capital property. Hedge all basis allocation mechanics to Treas. Reg. 1.358-2 and IRS guidance.

Section 6: Planning Considerations

Pre-Transaction Checklist

Before proceeding with an IRC 355 distribution, practitioners should systematically address the following:

1. ATB confirmation for both D and C: Document the 5-year ATB history for each entity (or each qualified group) independently. Identify any taxable acquisitions within the 5-year period that could taint the ATB.
2. Control verification: Confirm that D holds at least 80% of C's voting stock and 80% of all other classes of C stock immediately before the distribution, consistent with IRC 368(c).
3. Business purpose documentation: Prepare a contemporaneous written analysis of the corporate business purpose. Document the operational rationale, the urgency of the separation, and the specific corporate (not shareholder) benefits anticipated. Avoid any references to anticipated sales or shareholder exits.
4. Device analysis: Assess all device and non-device factors under Treas. Reg. 1.355-2(d). Particular attention to any post-distribution plans for the sale of D or C stock.
5. IRC 355(d) review: Identify any purchasers who have acquired 50% or more of D's stock in taxable transactions within the prior 5 years. Any such acquisition triggers gain recognition under IRC 355(d).
6. IRC 355(e) plan analysis: Assess whether there is any planned or contemplated acquisition of C or D within 2 years of the distribution. Even informal discussions with potential acquirers may constitute evidence of a "plan" under Treas. Reg. 1.355-7.
7. E&P allocation planning: Project the E&P allocation between D and C under Treas. Reg. 1.312-10 and assess the impact on each entity's future dividend capacity.
8. Basis step-down: If D's basis in C stock exceeds C's FMV, a qualifying distribution may require a basis step-down for D's assets transferred to C. Assess the impact on C's depreciation and gain/loss exposure post-spin.

Comparing the IRC 355 Spin-Off to a Taxable Asset Sale

Where a client is considering separating one of two businesses, an IRC 355 spin-off is not the only available structure. A taxable sale of one business (structured as an asset sale or a deemed asset sale under IRC 338(h)(10) or IRC 336(e)) may be preferable in certain circumstances -- particularly where the selling entity has significant tax losses to absorb the gain, where a basis step-up at the acquired entity is highly valuable to the buyer, or where the IRC 355 ATB or business purpose requirements cannot be satisfied with confidence. See the IRC 338 Deemed Asset Sale and IRC 336(e) Practitioner Guide for a detailed analysis of the alternative taxable sale structures, including the OBBBA bonus depreciation interaction and the mechanics of the deemed asset sale election.

IRS Private Letter Ruling (PLR) Practice

For large, complex, or borderline IRC 355 distributions, practitioners routinely request an IRS Private Letter Ruling to confirm qualification before the transaction closes. The IRS will typically rule on the ATB and business purpose requirements and may address certain device factors. A PLR provides binding comfort on the specific transaction for the requesting taxpayer (but cannot be relied upon by other taxpayers).

However, the IRS will decline to issue rulings in certain situations: where there is a specific contemplated acquisition of C or D at the time of the ruling request (IRC 355(e) exposure); where the device analysis presents a borderline or high-risk fact pattern; or where the ATB involves novel or unresolved issues outside the published ruling guidelines. Practitioners should consult current IRS PLR ruling guidelines (Rev. Proc. 2024-1 or current-year equivalent) for submission requirements, processing timelines, and identified "no-rule" areas. Hedge all PLR timing and processing estimates to IRS.gov and current IRS guidance, as PLR timelines vary significantly.

State Tax Considerations

Most states conform to IRC 355 nonrecognition for state income tax purposes, but conformity is not universal. Some states impose their own ATB or business purpose requirements that may differ from the federal standards. States with separate corporate income tax regimes (or states that do not adopt the federal consolidated return rules) may treat the spin-off differently for apportionment and combined reporting purposes. Practitioners should assess state conformity for every state in which D or C has nexus before advising on the state tax consequences of the distribution. Hedge all state conformity conclusions to applicable state tax authority.

Securities Law Considerations

Spin-offs involving publicly traded companies typically require registration of C shares with the Securities and Exchange Commission under the Securities Act of 1933 or an available exemption, a Form 10 registration statement, and compliance with applicable stock exchange listing requirements. These are parallel legal processes distinct from the tax qualification analysis. Practitioners advising public company clients on IRC 355 spin-offs should coordinate with securities counsel and confirm that the securities law timeline is consistent with the tax planning calendar.