Section 368 Tax-Free Reorganizations: Types, Tests, and Tax Effects

A Section 368 tax-free reorganization is a corporate transaction—a merger, a stock or asset acquisition, a recapitalization, a spin-off, an identity change, or a bankruptcy restructuring—that defers federal income tax on the exchange when it fits one of seven statutory patterns and satisfies three judicial doctrines. When the structure qualifies, neither the corporations nor their shareholders recognize gain on the deal itself; the gain is preserved through basis rules and comes due later, when the stock or assets are eventually sold in a taxable transaction. When it does not qualify, the same deal is treated as a taxable sale of stock or assets and generates an immediate tax bill.¹

The seven types are labeled A through G. Each has its own structural rules, and each sits on top of the same three overarching tests.

The Three Doctrines Every Deal Has to Clear

Before any type-specific rule matters, the transaction has to survive three judge-made requirements written into the Treasury Regulations. Miss any one and the entire deal is taxable.

Continuity of Interest

The target company’s former shareholders have to come out of the deal holding a meaningful equity stake in the acquiring corporation, not just cash. Treasury Regulation 1.368-1 governs.² No regulation states a bright-line minimum, but the examples in the regulations treat 40% stock consideration as sufficient and 20% as insufficient. Practitioners generally treat 40% as the safe harbor. If the target shareholders unload their new stock right after closing under a prearranged plan, the IRS can argue the proprietary interest was never really retained.

Continuity of Business Enterprise

The acquirer can’t strip the target and walk away. Treasury Regulation 1.368-1(d) requires the acquirer either to continue the target’s historic business or to use a significant portion of the target’s historic business assets in some business.² Where the target ran multiple lines of business, continuing one significant line is enough. The “historic business” is the one the target most recently conducted, not one manufactured on the eve of the deal.

Business Purpose

There has to be a real corporate reason for the transaction beyond tax savings. Treasury Regulation 1.368-1(c) rejects schemes that involve “an abrupt departure from normal reorganization procedure” with “no business or corporate purpose.”² Reducing overhead, entering new markets, resolving management succession, and achieving operational synergies all qualify. The purpose has to belong to the corporation itself, not just to an individual shareholder who wants to cash out at capital gains rates. The IRS looks especially hard at business purpose in internal restructurings, where there is no arm’s-length buyer to suggest independent economic substance.

The Step Transaction Doctrine

Corporate deals rarely happen all at once. Parties sign, complete preliminary transactions, and close in stages. The step transaction doctrine lets the IRS collapse those stages into a single integrated transaction when it tests whether the reorganization requirements are met. A deal that qualifies step by step can fail when viewed as a whole.

Courts apply three overlapping tests:

End-result test: if the steps were always intended to produce one ultimate result, they are treated as one transaction.
Interdependence test: if each step would have been pointless without the others, they collapse into one.
Binding commitment test: if there was a binding commitment to complete every step when the first occurred, the steps integrate regardless of the time between them.

This is why aggressive sequencing—buying part of the target’s stock for cash, waiting, then doing a “solely for voting stock” exchange for the rest—so often backfires.

Type A: Statutory Merger or Consolidation

A Type A reorganization is a merger or consolidation carried out under federal or state corporation law.¹ It offers the most flexibility on consideration of any acquisition-style reorganization. As long as at least 40% of total consideration is acquirer stock, the remaining 60% can be cash, debt, or other property. That makes the Type A the standard structure for large public-company mergers where shareholders want some liquidity.

The core requirement beyond the three doctrines is that the merger be legally valid under state law. If the state-law merger is defective, the tax treatment collapses with it.

Forward Triangular Merger

The target merges into a subsidiary of the acquiring parent, and target shareholders receive parent stock, not subsidiary stock. Section 368(a)(2)(D) allows this but requires the subsidiary to acquire “substantially all” of the target’s properties.¹ The IRS interprets “substantially all” as at least 90% of the fair market value of net assets and at least 70% of the fair market value of gross assets, and uses those thresholds in private letter rulings.³ Only parent stock can be used as consideration.

Reverse Triangular Merger

The direction flips. The parent’s subsidiary merges into the target, and the target survives as a subsidiary of the parent. This structure is valuable when the target holds non-transferable contracts, licenses, or permits that would be lost in a forward merger. Section 368(a)(2)(E) requires two things. The target’s former shareholders must exchange enough stock to give the parent “control” of the surviving target, meaning at least 80% of combined voting power and at least 80% of each other class of stock.¹ And the consideration used to acquire that control must be primarily voting stock of the parent. That makes the reverse triangular meaningfully less flexible than a straight Type A on the cash-stock mix.

Type B: Stock-for-Stock Acquisition

A Type B is the most rigid acquisition structure in Section 368. The acquirer obtains the target’s stock in exchange for its own voting stock (or the voting stock of its parent) and must hold control of the target—80% of voting power and 80% of each other class of stock—immediately after the acquisition.¹

The defining restriction is the word “solely.” Consideration must consist entirely of voting stock. No cash, no debt, no other property. The only cash the IRS permits is a small amount paid in lieu of fractional shares. The acquirer can use its own voting stock or its parent’s, but the statute treats each alternative separately, and mixing them in one deal creates qualification risk.

The “solely voting stock” rule creates a trap when the acquirer already owns some target stock bought for cash at an earlier date. If the IRS decides the earlier cash purchase and the later stock exchange were steps in a single plan, the transaction fails: control wasn’t obtained solely for voting stock, because cash paid for part of the control block. This is where the step transaction doctrine does much of its real-world damage.

Type C: Voting Stock for Assets

A Type C is an acquisition of “substantially all” of a target’s assets in exchange for voting stock, using the same 90%-of-net-assets and 70%-of-gross-assets thresholds that apply in forward triangular mergers.³ After the exchange, the target must distribute everything it has left—including the acquirer’s stock—to its own shareholders, effectively liquidating.

The default is “solely for voting stock,” but Section 368(a)(2)(B) provides a limited boot relaxation rule. Some non-stock consideration is allowed if the acquirer obtains at least 80% of the fair market value of all the target’s property solely for voting stock; the remaining 20% can theoretically be cash or other property.¹ The catch: for purposes of the 80% test, any liabilities the acquirer assumes count as cash paid. Since most operating companies carry meaningful debt, the 20% allowance is usually consumed by assumed liabilities and the deal is pushed back into a purely voting-stock structure.

Type D: Transfers to a Controlled Corporation

A Type D covers a transfer of assets to a corporation that the transferor or its shareholders control immediately after the transfer, followed by a distribution of the receiving corporation’s stock in a transaction qualifying under Section 354, 355, or 356.¹

Type D splits in two. An acquisitive Type D resembles a Type C but with the control requirement satisfied by the transferor’s shareholders. The divisive Type D—more common—covers spin-offs, split-offs, and split-ups, in which one corporation divides into two or more.

Divisive Type D transactions have to satisfy Section 355 on top of Section 368. Both the distributing corporation and the spun-off corporation must be engaged in the active conduct of a trade or business immediately after the distribution, and each business must have been actively conducted throughout the five-year period ending on the distribution date. That five-year rule exists to stop companies from stuffing a newly acquired business into a subsidiary and spinning it off tax-free.⁴

Type E: Recapitalization

A Type E is a rearrangement of a single corporation’s capital structure—exchanging one class of stock for another, converting debt into equity, and similar reshufflings. Because only one corporation is involved and no assets move between separate entities, the continuity of interest and continuity of business enterprise doctrines don’t apply in the traditional sense. The requirement that matters is a legitimate business purpose pursued under a plan of reorganization.

Type F: Change of Identity, Form, or Place

A Type F covers a “mere change in identity, form, or place of organization” of a single corporation.¹ Reincorporating in a new state, changing the corporate name, or converting from one entity form to another all fit. Shareholders, assets, and business stay the same; only the corporate wrapper changes. Type F treatment has a practical advantage: the tax year generally does not terminate, unlike most other reorganization types where the target’s tax year closes on the date of transfer.

Type G: Bankruptcy Reorganization

A Type G is a transfer of assets by a corporation in a Title 11 case or similar proceeding under a court-approved plan, with the acquiring corporation’s stock distributed to the debtor’s shareholders or creditors in a qualifying exchange.¹ Congress relaxed the usual rules for distressed companies. Most importantly, creditors who receive stock in the acquirer can stand in for the debtor’s shareholders when testing continuity of interest. Without that adjustment, almost no bankruptcy reorganization could qualify, because original shareholders in a bankrupt company rarely retain meaningful equity.

What Qualification Actually Buys

When a deal clears every requirement, a chain of non-recognition rules applies.

No Gain to the Corporations or the Shareholders

The target recognizes no gain or loss on the transfer of its assets to the acquirer, provided the exchange is made under the plan of reorganization and solely for stock or securities of the acquirer.⁵ Section 354 gives shareholders the parallel rule: no gain or loss when they exchange stock in one party to the reorganization solely for stock or securities in another party.⁶

Boot

If a shareholder receives cash or other non-stock property (called boot) alongside qualifying stock, Section 356 requires recognition of gain, but only up to the amount of boot received, and never more than the total gain realized on the exchange. If the exchange “has the effect of the distribution of a dividend,” the recognized gain is treated as ordinary dividend income up to the shareholder’s ratable share of accumulated earnings and profits; anything more is capital gain.⁷

Basis

The deferred tax does not disappear; it is embedded in the basis of what is received. Section 358 gives shareholders a substituted basis in their new stock: the basis of the surrendered stock, minus cash or the fair market value of boot received, plus any gain recognized.⁸ On the corporate side, Section 362(b) gives the acquirer a carryover basis in the assets received—the target’s basis, increased by any gain the target recognized.⁹ There is no step-up to fair market value. Carryover basis is the mechanism that preserves the deferred gain at the corporate level until the assets are sold or depreciated.

Tax Attribute Carryover

Section 381 lets the acquirer inherit the target’s tax attributes—net operating loss carryovers, earnings and profits, accounting methods, and other specified items. Section 381 applies to Type A, C, D, F, and G reorganizations, but not to Type B (the target survives as a separate subsidiary and doesn’t transfer assets) or Type E (only one corporation is involved).¹⁰

Section 382 then imposes a hard ceiling. If the acquisition causes an ownership change, meaning one or more 5-percent shareholders increase their stake by more than 50 percentage points during a testing period, the pre-change losses that can offset the combined company’s taxable income each year are capped at a formula amount tied to the corporation’s value and the long-term tax-exempt rate.¹¹ In large acquisitions, that limitation can neutralize the NOL benefit that made the target attractive in the first place.

Reporting After Closing

Qualification doesn’t end at signing. Treasury Regulation 1.368-3 requires every significant shareholder and every corporate party to file a statement with the tax return for the year of the transaction. The statement must include names and employer identification numbers of all parties, the date of the reorganization, the value and basis of transferred assets or stock in specified categories (including loss importation property and loss duplication property), and the control number of any private letter ruling the IRS issued.¹² Bad reporting does not automatically blow up reorganization status, but it triggers penalties and invites scrutiny. Contemporaneous documentation of business purpose, valuation analyses supporting the continuity-of-interest calculation, and proof that the substantially-all or control thresholds were met are what carry a deal through an audit.

1
Office of the Law Revision Counsel. 26 U.S. Code 368 – Definitions Relating to Corporate Reorganizations
2
eCFR. 26 CFR 1.368-1 – Purpose and Scope of Exception of Reorganization Exchanges
3
Internal Revenue Service. Private Letter Ruling 202601012
4
Office of the Law Revision Counsel. 26 U.S. Code 355 – Distribution of Stock and Securities of a Controlled Corporation
5
Office of the Law Revision Counsel. 26 U.S. Code 361 – Nonrecognition of Gain or Loss to Corporations; Treatment of Distributions
6
Office of the Law Revision Counsel. 26 USC 354 – Exchange of Stock and Securities in Certain Reorganizations
7
Office of the Law Revision Counsel. 26 U.S. Code 356 – Receipt of Additional Consideration
8
Office of the Law Revision Counsel. 26 U.S. Code 358 – Basis to Distributees
9
Office of the Law Revision Counsel. 26 U.S. Code 362 – Basis to Corporations
10
Office of the Law Revision Counsel. 26 U.S. Code 381 – Carryovers in Certain Corporate Acquisitions
11
Office of the Law Revision Counsel. 26 USC 382 – Limitation on Net Operating Loss Carryforwards and Certain Built-In Losses Following Ownership Change
12
eCFR. 26 CFR 1.368-3 – Records to Be Kept and Information to Be Filed With Returns