1. What Corporate Divestitures Involve and How Structure Choice Shapes Tax and Liability Outcomes
The three primary divestiture structures available to a seller are a taxable asset sale, a taxable stock sale, and a tax-free reorganization. Each produces materially different tax consequences, liability allocations, and negotiation dynamics.
In a taxable asset sale, the selling entity sells individual assets and the buyer assumes specified liabilities. The seller pays tax at the entity level on any gain recognized, and if the selling entity is a corporation distributing the proceeds to shareholders, the shareholders pay tax again on the distribution, producing two levels of taxation on the same economic gain. From the buyer's perspective, an asset sale produces a stepped-up tax basis in the acquired assets, which is why buyers generally prefer asset deals; the seller bears the tax cost of providing that benefit. In a stock sale, the seller sells equity interests in the subsidiary being divested and the buyer acquires the entity with its historical tax basis, unassumed liabilities, and full operating history. Sellers generally prefer stock sales because gain is recognized only once at the shareholder level, historical liabilities transfer with the entity by operation of law, and the transaction structure is simpler.
The tension between buyer preference for asset deals and seller preference for stock deals is where divestiture negotiations most commonly produce significant economic adjustments. A seller who understands the full after-tax economics of each structure can negotiate a price differential that compensates for providing the buyer with the stepped-up basis the asset structure delivers, rather than simply conceding to the buyer's preferred structure because it appears cleaner. Corporate M&A and corporate transactions counsel must model the after-tax proceeds to the seller under each available structure before the marketing process begins, because the structure decision made before buyers are engaged shapes every negotiation that follows.
How Tax-Free Spin-Offs under Irc § 355 Work and What Requirements Apply
A tax-free spin-off allows a parent corporation to distribute the stock of a subsidiary to its shareholders without either the parent or its shareholders recognizing gain on the distribution, which is the most tax-efficient divestiture structure available when the requirements are met.
IRC § 355 requires satisfying several independent requirements: the parent must control the subsidiary, meaning it owns at least 80 percent of the voting stock and at least 80 percent of each class of nonvoting stock, immediately before the distribution; both the parent and the subsidiary must have been actively conducting a trade or business for at least five years prior to the distribution; the distribution must not be principally a device for distributing earnings and profits of either corporation; there must be a substantial business purpose for the separation beyond tax avoidance; and the distribution must not be part of a plan under which one or more persons will acquire a 50 percent or greater interest in either corporation.
The device test and the business purpose requirement are the two most contested elements in IRS review of spin-off transactions. A distribution made in connection with a sale of either resulting company to a third party shortly after the spin-off raises a device argument: the IRS can characterize the spin-off as a mechanism for converting ordinary dividend income into capital gain rather than a legitimate business separation. Advance IRS ruling requests, which are available but time-consuming, provide certainty on tax-free treatment before the transaction is completed. Tax-free spin-offs and corporate spin-off structuring requires a complete analysis of all five IRC § 355 requirements and a realistic assessment of whether the IRS is likely to challenge any of them before the transaction is announced.
| Structure | Tax at Entity Level | Tax at Shareholder Level | Buyer Basis | Seller Preferred |
|---|---|---|---|---|
| Taxable asset sale | Yes, on asset gains | Yes, on distribution | Stepped up | Rarely |
| Taxable stock sale | No at entity level | Yes, on equity gain | Carryover historical | Yes |
| Tax-free spin-off (§ 355) | No, if requirements met | No, if requirements met | Allocated between parent and sub | Yes when available |
2. What Divestiture Preparation Requires before Sellers Engage Buyers
A division that has operated as part of a larger enterprise shares IT systems, HR infrastructure, supply agreements, real estate, insurance programs, and often intellectual property with the parent. Untangling those interdependencies is the preparation work that determines whether a sale closes and at what price.
Reverse due diligence is the process by which the seller analyzes the business being sold the same way a buyer would, identifying the issues that will arise in the buyer's diligence review and addressing those that can be resolved before marketing begins. Contracts with change of control provisions that could give counterparties termination rights in a sale, environmental liabilities the business carries from prior operations, employment agreements and equity incentive plans that require renegotiation or acceleration in a transaction, and customer concentration risks that affect the business's attractiveness all surface in reverse due diligence. A seller that identifies and resolves these issues before going to market avoids the price adjustments and deal delays that arise when buyers discover them in diligence.
Creating a clean legal entity for the business being sold often requires transferring assets, licenses, contracts, and employees from the parent's legal entities into a standalone subsidiary that can be transferred to the buyer. This separation process generates legal work in every jurisdiction where the business operates: contract assignments and novations that require counterparty consent, trademark and IP license assignments that require attention to chain of title, real estate leases that require landlord consent to assignment, and regulatory license transfers that require agency approval. Corporate restructuring and business acquisition transactions involving carved-out businesses require building the separation timeline into the overall transaction timeline, because entity separation that is not complete at closing creates post-closing risk for both parties.
How Transition Service Agreements Define the Post-Closing Relationship and What Makes Them Costly
When a divested business cannot operate independently at closing because it relies on the parent's shared services, the parties enter a transition service agreement under which the parent continues to provide those services to the buyer for a defined period after closing.
TSAs cover IT systems and infrastructure, HR and payroll services, accounting and finance functions, insurance program coverage, supply chain and logistics services, and real estate sharing arrangements where the business occupies space in a facility that is not being sold. The TSA allows the transaction to close before full separation is achieved, which shortens the time to closing but defers the separation cost and complexity to the post-closing period. Poorly drafted TSAs create disputes about the quality of services being provided, the cost allocation methodology, and the timeline for transitioning off the parent's infrastructure, and those disputes occur after the buyer has paid full consideration but before it has operational independence.
TSA pricing is one of the most contested elements of divestiture negotiations. Sellers want to recover the fully allocated cost of providing the services, including overhead, IT infrastructure, and management time. Buyers want to pay variable cost only, on the theory that the parent incurs most of these costs regardless of whether it provides the services to the buyer. The TSA term, pricing, and exit provisions should be negotiated with the same attention as the core transaction documents, because they determine the cost and friction of the separation period that follows closing.
How Distressed Divestitures Change Seller Leverage
Distressed corporate divestitures, where a parent company sells a business unit to raise cash under financial pressure or in connection with a broader restructuring, present a specific set of legal challenges that alter the seller's position from the moment the process begins.
The seller's motivation is known. Buyers in distressed divestiture processes understand that the seller needs to transact and adjust their bids accordingly. The timeline is often compressed by liquidity constraints that prevent the seller from running a full competitive auction process, which reduces the number of qualified bids and the seller's ability to use competing offers as negotiating leverage. The transaction may also occur concurrent with the parent company's own debt restructuring, creating intercreditor dynamics that affect which assets are legally available for sale and at what price.
Lender consent requirements in the parent's credit agreement typically include restrictions on material asset dispositions, and a distressed divestiture that does not satisfy those restrictions cannot proceed without lender approval or waiver. Lenders with collateral interests in the assets being sold have their own views on timing and price, and their consent may come with conditions that affect how proceeds are distributed after closing. Distressed M&A and acquisition finance in the divestiture context require coordinating the sale process with the parent's lenders from the outset, because a divestiture that cannot close because of a lender consent failure has wasted the time and leverage the seller had at the beginning of the process.
3. What Regulatory Requirements Apply to Corporate Divestitures and When Antitrust Compels a Sale
Regulatory requirements in corporate divestitures arise from two directions: the government may require the divestiture as a condition of approving a separate merger, or the divestiture itself may be large enough to require HSR notification.
The HSR Act requires premerger notification when applicable thresholds are met. For 2026, the minimum size-of-transaction threshold is $133.9 million, subject to annual adjustment and applicable exemptions. The waiting period after filing is 30 days, which can be extended by a second request for additional information. A divestiture that requires HSR filing cannot close until the waiting period expires or is terminated early by the agencies, which adds regulatory timeline to the transaction and requires the parties to address how the transaction terms hold during the review period. Hart-Scott-Rodino filing analysis should occur before the transaction is signed, because the filing obligation and its implications for closing timing are material terms of the deal.
Antitrust consent decree divestitures are transactions the government requires as a condition of approving a merger between two companies whose combined market position would otherwise raise competitive concerns. The DOJ or FTC identifies the assets that must be divested, typically a specific business unit or product line that competes with both parties, and conditions its merger approval on that divestiture being completed within a specified period and to a buyer the agency finds acceptable. These divestitures differ fundamentally from voluntary transactions: the seller does not control the timeline, the buyer must be approved by the government, the asset is defined by the consent decree rather than the seller's preference, and the sale price reflects the constrained circumstances rather than an arm's-length negotiation.
How Employee Obligations and the Warn Act Affect Divestiture Timing and Structure
A divestiture that results in the closure of a facility or a reduction in workforce triggers WARN Act obligations that affect the transaction timeline and the allocation of notification responsibility between seller and buyer.
The WARN Act at 29 U.S.C. § 2101 requires covered employers to provide 60 days' advance written notice before a plant closing affecting 50 or more employees or a mass layoff affecting 50 or more employees at a single site. In a divestiture context, the question of who bears the WARN Act obligation is negotiated in the purchase agreement. If the buyer intends to retain the business as a going concern without material layoffs, the obligation may not be triggered at all. If the buyer plans significant workforce reductions post-closing, the obligation is the buyer's to satisfy. If the seller closes a facility before closing as part of the separation process, the obligation is the seller's.
The analysis becomes more complex when the divestiture results in employees who are not offered comparable employment by the buyer, which is treated as a constructive termination under some WARN Act interpretations and may trigger the notice obligation even without a formal layoff announcement. Change of control provisions in employment agreements, unvested equity awards, pension plan treatment, and the decision of which employees are offered continued employment by the buyer all require specific attention in divestiture transactions. Corporate transactions counsel must address WARN Act timing, employee benefit plan transitions, and key employee retention before the marketing process begins, because employee issues discovered in buyer diligence reduce price and delay closing.
4. Frequently Asked Questions about Corporate Divestitures
Corporate divestiture questions arrive from corporate development teams preparing a business unit for sale who want to know what legal preparation reduces buyer diligence friction, from boards evaluating whether a spin-off or an asset sale produces better after-tax economics, from PE sponsors managing a portfolio company sale who want to understand what transition obligations the sale agreement creates, and from general counsel whose company received a DOJ consent decree requiring a divestiture of specific assets within 12 months. Those situations generate the following answers.
What Is a Corporate Divestiture and How Does It Differ from a Regular Acquisition?
A corporate divestiture is the sale by a company of a business unit, subsidiary, division, or asset portfolio it currently owns. It differs from a regular acquisition in that the seller's perspective drives the process: the seller must prepare the asset for sale, decide on transaction structure, separate shared services and infrastructure, and manage the regulatory process. The buyer may be acquiring a business that has never operated independently, creating complexity around IT separation, contract assignments, and employees whose roles span both the sold business and the remaining parent. The divestiture's complexity scales directly with how integrated the sold business was with the parent's operations.
What Is the Difference between a Spin-Off and an Asset Sale for the Seller
A spin-off under IRC § 355 distributes the subsidiary's stock to the parent's shareholders without either the parent or shareholders recognizing taxable gain if all five statutory requirements are met. It is non-cash: the parent receives no proceeds and reduces its asset base, while shareholders receive shares in a now-independent company. An asset sale transfers specific assets to a buyer for cash but typically triggers two levels of tax, one at the corporate level and one at the shareholder level on distribution. The spin-off is generally more tax-efficient but requires satisfying strict statutory requirements, obtaining board and often shareholder approval, satisfying SEC registration or exemption requirements, and operating the separated company as a standalone entity.
What Should a Seller Prepare before Engaging Buyers in a Divestiture Process?
Reverse due diligence identifies the issues a buyer will raise during their own review before they appear in negotiations. Key preparation items include resolving change of control consent requirements in material contracts, addressing environmental liabilities and compliance gaps, preparing audited standalone financial statements for the divested business, identifying shared IP that requires carve-out licensing arrangements, inventorying real estate leases requiring landlord consent to assignment, and evaluating WARN Act obligations if workforce changes are anticipated. A seller who completes this preparation before marketing avoids the price adjustments and closing delays that arise when buyers discover these issues in diligence, typically after exclusivity is signed when the seller's leverage is lowest.
When Does the Government Require a Company to Divest a Business It Does Not Want to Sell?
The DOJ or FTC can require a company to divest a specific business unit as a condition of approving a merger whose combination would otherwise raise antitrust concerns. These consent decree divestitures are legally mandatory, and failure to complete the divestiture within the required period puts the underlying merger approval at risk. The agency identifies which assets must be divested and must approve the buyer as having the resources and capability to operate the divested business as a competitive standalone entity. For 2026, the HSR premerger notification threshold requiring agency filing is $133.9 million, subject to annual adjustment, meaning many divestitures also require a separate regulatory filing independent of any consent decree obligation.
09 Jun, 2026
