Taxable vs tax-free reorganization is the threshold tax-structuring question in U.S. M&A: will the selling shareholders recognize (and pay tax on) their gain now, or will the transaction qualify for non-recognition ("tax-free") treatment under IRC §368, deferring the gain? The answer hinges chiefly on what the sellers receive — cash versus the acquirer's stock — and it drives the economics for both sides.
Taxable deals
In a taxable transaction — an all-cash deal, an asset purchase, or a stock sale for cash — the seller recognizes gain immediately at closing (generally capital gain, subject to recapture and other rules). The offsetting feature is on the buyer's side: a taxable asset deal (or §338(h)(10) stock deal) gives the buyer a stepped-up basis and future deductions. Taxable structures dominate private-company M&A and all sponsor buyouts.
Tax-free reorganizations
A tax-free reorganization qualifying under §368 lets target shareholders defer the gain on the portion of consideration received as acquirer stock — they roll their investment into the buyer's shares and pay tax only later, when they sell those shares. The trade-offs:
- the seller gives up liquidity (receiving stock, not cash) in exchange for tax deferral and continued upside; and
- the buyer generally takes a carryover basis in the acquired assets (no step-up), forgoing future deductions.
The "continuity of interest" requirement
The defining condition for tax-free treatment is continuity of interest (COI): target shareholders must continue their investment by receiving a substantial equity stake in the acquirer. As a rule of thumb, at least ~40% of the total consideration must be acquirer stock for the deal to qualify (the IRS has used 40% in rulings; some authorities cite higher). Cash and other non-stock consideration ("boot") is permitted up to a point — but boot is taxable to the extent of the recipient's gain, even within an otherwise tax-free reorganization. Other doctrines (continuity of business enterprise, business purpose, the step-transaction doctrine) must also be satisfied.
The classic trade-off
The choice sets up a recurring negotiation captured in this comparison:
| Taxable | Tax-free (§368) | |
|---|---|---|
| Consideration | Mostly cash | Mostly buyer stock |
| Seller tax | Now | Deferred |
| Buyer basis | Step-up | Carryover |
| Seller liquidity | High | Low |
| Risk to seller | None (cashed out) | Holds buyer stock |
A buyer wanting to pay cash and capture a step-up lives in the taxable world; a buyer wanting to conserve cash and pay in stock for a seller who values deferral uses a §368 reorganization (most often a Type A or stock-for-stock structure). Matching the structure to both parties' tax positions is central to deal value, which is why tax advisers are involved from the term-sheet stage.
See also
- Section 368 reorganization types — The Section 368 categories of tax-free reorganizations — Type A (statutory merger), Type B (stock-for-stock), Type C (stock-for-asset), Type D (acquisitive D), Type F (form change) and others.
- All-stock deal — A deal in which sellers receive only the buyer's shares as consideration. Can be tax-deferred for shareholders if structured as a qualifying reorganization.
- All-cash deal — A deal in which the consideration is paid entirely in cash. Eliminates buyer-stock risk for the seller, but is taxable to selling shareholders.
- Basis step-up — An increase in the tax basis of acquired assets to fair market value, allowing the buyer to depreciate or amortise the higher basis going forward. Available in asset deals and 338-elected stock deals.
- QSBS in M&A — Qualified Small Business Stock — Section 1202 — provides a federal capital-gains exclusion of up to $10M (or 10x basis) on the sale of qualifying C-corp stock held more than five years.
- Statutory merger — A combination governed by state corporate-law statute in which one constituent corporation absorbs the other, with the surviving entity inheriting all rights and obligations by operation of law.