Tax-Free Business Sale: Section 368 Reorganizations Explained

When a buyer offers stock instead of cash, you might pay zero federal capital gains tax at close. Or you might trigger a gain you can never exclude. The difference is in how the deal is structured — and whether your existing tax benefits survive the exchange.

What is a Section 368 reorganization?

IRC §368 is the statutory framework that defines "corporate reorganizations" — deal structures where a target company's shareholders exchange their equity for acquirer equity without recognizing taxable gain at the time of the exchange. The gain is not forgiven; it is deferred. Your basis in the acquirer stock is a carryover from your original stock, and you owe tax when you eventually sell.

The practical consequence: if you sell a $20M company in an all-stock §368 deal, you walk away from the closing table with $20M worth of acquirer stock and a tax bill of $0. Five years later when you sell that stock for $25M, you owe tax on the full gain from your original basis — not just the $5M appreciation since closing.

This is meaningful deferral. A dollar of tax you pay in year 10 is worth significantly less in present-value terms than the same dollar paid at close. For founders with large gains and long time horizons, deferral has real economic value.

The three most common types

Type A: Statutory merger (§368(a)(1)(A))

The target company merges into the acquirer (or acquirer's subsidiary) under state law. The target ceases to exist; its shareholders receive acquirer stock. Because this is a state-law merger, the IRS has more flexibility on the mix of consideration — up to 40–50% of the consideration can be cash or other property ("boot") while still qualifying, depending on continuity of interest requirements.

Type A is the most flexible and most common structure for mid-market M&A deals where the buyer wants to issue some cash and some stock.

Type B: Stock-for-stock exchange (§368(a)(1)(B))

The acquirer purchases the target's stock in exchange solely for the acquirer's own voting stock. No cash. No notes. No other property. The "solely" requirement is absolute — even $1 of boot disqualifies the transaction from Type B treatment.

Type B preserves the target as a subsidiary (no merger). It's used when the acquirer wants to keep the target's legal entity intact (for contracts, licenses, or regulatory reasons) and is willing to pay entirely in stock.

Type C: Stock-for-assets exchange (§368(a)(1)(C))

The acquirer purchases substantially all of the target's assets in exchange for the acquirer's voting stock (and, in limited cases, boot up to 20% of total FMV). The target then liquidates and distributes the acquirer stock to its shareholders.

Type C results in the target winding down. It's less common than Type A and B in practice.

Requirements that must be met

Continuity of interest (COI)

The transaction must preserve a meaningful equity interest in the continuing enterprise. Under Treas. Reg. §1.368-1(e), this is measured at the signing date: at least 40–50% of the total consideration (by FMV) must be acquirer stock, not cash. The IRS has historically required 50% equity in advance rulings (Rev. Proc. 77-37).¹

Practical implication: in a $15M deal where the buyer offers $6M cash and $9M in stock, the equity piece is 60% — COI is met. If the buyer offers $9M cash and $6M in stock (40% equity), you're near the line and need a tax lawyer's opinion.

Continuity of business enterprise (COBE)

After the deal, the acquirer must either continue at least one of the target's historic business lines or use a significant portion of the target's historic business assets. This prevents paper reorganizations where the target's business is immediately wound down.²

Business purpose

The reorganization must have a legitimate business purpose beyond tax avoidance. In practice, any real M&A transaction (combining operations, entering a market, acquiring technology) satisfies this requirement without issue.

Boot: when part of the deal is taxable

Any consideration received other than acquirer stock — cash, notes, assumed liabilities in excess of basis, or other property — is called "boot." Under IRC §356, you must recognize gain equal to the lesser of (a) the total realized gain on your shares or (b) the FMV of boot received. You cannot recognize a loss.

Boot can also be recharacterized as a dividend under §356(a)(2) if the exchange "has the effect of a dividend distribution" — a determination based on the hypothetical redemption test. This matters because dividends may be taxed at qualified rates or ordinary rates depending on your situation and holding period. A deal structured with significant boot should be reviewed by a tax advisor before signing.

Worked example: $15M business, three scenarios

Assume: business valued at $15M, your basis is $200K, you're in the top tax bracket, 13.3% California state income tax, no QSBS (addressed separately below). Federal LTCG rate: 23.8% (20% + 3.8% NIIT). Total combined rate: ~37.1%.

In scenario B, you defer $5.5M+ in tax but now hold a concentrated position in the acquirer's stock. If the acquirer is a public company, you'll face lockup restrictions before you can sell. If the acquirer is a larger private company, you may have no liquidity for years.

Lockup and concentration risk

Accepting acquirer stock — especially from a public company — typically comes with restrictions:

• Contractual lockup: Most acquisition agreements impose a 6–24 month lockup on target shareholders selling acquirer stock. During this period, you cannot sell regardless of what the stock does.
• Rule 144 restrictions: If you are deemed an "affiliate" of the acquirer (e.g., you join the board or hold >10% of the acquirer post-close), Rule 144 volume limitations apply to any sales.
• Concentration risk: $15M in a single stock is highly concentrated. A 30% drop in the acquirer's stock price converts a $5.5M tax deferral into a $4.5M net loss relative to taking cash.

A fee-only financial advisor should model the break-even: how much must the acquirer stock appreciate (or at minimum not decline) for the deferral to be worthwhile vs. paying tax at close and diversifying?

The QSBS destruction trap — critical for founders

If your business shares qualify as Qualified Small Business Stock (§1202), a §368 reorganization can be one of the most expensive mistakes you make.

Here is why. Your QSBS exclusion (up to $15M per taxpayer, potentially 100% of federal capital gains under the OBBBA 5-year holding-period tier) applies to a direct sale of your QSBS. The stock you receive in a §368 exchange is the acquirer's stock — and that new stock is only QSBS if the acquirer itself independently qualifies: domestic C-corp, qualified trade or business, gross assets at issuance under $75M (post-OBBBA).

Any acquirer large enough to acquire your company for $10M+ almost certainly has gross assets exceeding $75M. Their stock is not QSBS. When you accept acquirer stock in a §368 deal:

• Your original QSBS gain is deferred (not excluded) — §354 says no recognition, but §1202 exclusion is not available because there's no "sale or exchange" triggering a disposition.
• The acquirer stock you receive has a carryover basis but is not QSBS.
• When you eventually sell the acquirer stock, the entire deferred gain is taxed at ordinary capital gains rates — no exclusion.

The correct response when you have QSBS and a buyer offers stock: negotiate for a cash deal (or at minimum, ensure your QSBS shares are treated as sold for cash, with the stock consideration allocated to non-QSBS shares if you have a mixed holding).

State tax treatment

Federal §368 nonrecognition does not automatically apply at the state level. Key variations:

• California: Generally conforms to federal §368 treatment on reorganizations, but has specific rules on installment sale treatment for stock received. California also does not conform to the §1202 QSBS exclusion — California taxes QSBS gains in full regardless of the federal exclusion.
• New York: Conforms to federal treatment for most §368 reorganizations.
• States with no income tax (Florida, Texas, Nevada, Wyoming, etc.): No state-level issue on any structure — this is one more reason to consider residency before a sale.

If you exchange shares in a §368 and later sell the acquirer stock as a resident of a high-tax state, the deferred gain — now fully realized — will be subject to that state's income tax. The state-level savings from deferral may be minimal compared to the federal benefit.

When a §368 reorganization makes sense

A §368 structure is worth pursuing when:

• You do not have QSBS stock (or have exhausted your QSBS exclusion).
• You believe in the acquirer's long-term prospects and are willing to hold concentrated stock for years.
• The acquirer is a well-capitalized public company with stable or growing stock price.
• You are in a high-tax state and the deferral allows you to time the gain to a future lower-income year or a future year of residency in a no-tax state.
• You have a large enough gain that even a 10-year NPV deferral of the tax liability has significant economic value ($5M tax deferred for 10 years at 6% real return = ~$1.95M present-value savings).

When to avoid a §368 and take cash

• You have qualifying QSBS — the §1202 exclusion is almost always worth more than deferral.
• You plan to use the proceeds for diversification or income and don't want multi-year concentration risk.
• The acquirer is a smaller company with uncertain prospects or illiquid stock.
• You are near or past retirement age and need cash to fund lifestyle.
• Your basis is high relative to proceeds (gain is small) — deferral has less value if the tax savings are modest.

Reporting and mechanics

If the exchange qualifies as a §368 reorganization, your tax attorney and CPA will file:

• Form 8937 — Report of Organizational Actions Affecting Basis of Securities (filed by the acquirer).
• Form 8949 — You report the exchange but show zero gain recognized on the qualifying shares; boot is reported as taxable gain.
• Your basis in acquirer stock equals your carryover basis from the target stock (adjusted for any boot received).

The holding period of the acquirer stock tacks to your original holding period in the target stock — important if you are looking for long-term capital gain treatment when you eventually sell.

The advisor's role in a §368 transaction

A §368 reorganization sits at the intersection of M&A legal structure, tax planning, and personal financial planning. The deal will have an M&A attorney (who ensures the legal requirements are met) and likely a tax advisor (who models the federal and state consequences). What's often missing is the financial-plan layer: how does this concentrated position fit into your retirement plan? When do you sell the acquirer stock, and what's the tax-optimal strategy for doing so? Should you use any proceeds to fund a Roth conversion, a Charitable Remainder Trust, or an estate-planning strategy during the lockup period?

These are questions a fee-only exit planning advisor addresses — not the M&A attorney, not the investment banker, not the CPA operating in isolation.