Business Exit Tax Planning: Structuring the $20M+ M&A Transaction
Selling a private business is the single largest liquidity event in an entrepreneur's life. In the absence of early, aggressive tax planning, the combined federal and state impact on a $20 million business sale can consume up to 40% of the enterprise value, quietly transforming a nine-figure exit into an eight-figure net payout. Whether private equity is buying a partial stake, a competitor is executing an all-cash strategic acquisition, or the founders are executing an earn-out buyout, the ultimate value retained depends entirely on the tax architecture of the deal structure. Our M&A tax team designs the structural framework of the transaction long before the Letter of Intent (LOI) is signed.
Asset Sale vs. Stock Sale: The Fundamental Tug-of-War
The primary tax conflict in any M&A transaction is the deal structure. Buyers overwhelmingly prefer an "asset sale" because it allows them to step up the tax basis of the assets they purchase (inventory, equipment, goodwill) and depreciate/amortize that higher basis against their future income, yielding massive tax write-offs for the buyer. However, for a seller operating as an S-Corporation or LLC, an asset sale triggers depreciation recapture on equipment — which is taxed at punitively high ordinary income rates rather than the favorable 20% long-term capital gains rate. If the seller operates as a C-Corporation, an asset sale triggers the catastrophic "double tax" — a 21% corporate tax on the sale, followed by a 20% dividend tax when the cash is distributed to the owners.
Conversely, sellers overwhelmingly prefer a "stock sale," where they simply sell their shares in the entity. A stock sale guarantees 100% of the gain is treated as a long-term capital gain, avoiding all ordinary income recapture and bypassing the C-Corp double tax trap. However, buyers loathe stock sales because they inherit the seller's historical (low) tax basis in the assets, sacrificing their depreciation write-offs, and they inherit all of the target company's undisclosed liabilities. Negotiating a Section 338(h)(10) or Section 336(e) election — which legally treats a stock purchase as an asset purchase for tax purposes, allowing the buyer to get their step-up while compensating the seller for their higher tax burden via a purchase price "gross-up" — is the centerpiece of our M&A tax advisory.
The QSBS Windfall: Section 1202 Total Exemption
For founders whose businesses are structured as domestic C-Corporations, the holy grail of exit planning is Section 1202 — the Qualified Small Business Stock (QSBS) exemption. If you sell QSBS that was acquired at original issue after Sept 27, 2010, and held for more than five years, you can exclude up to 100% of the federal capital gains tax on the sale, up to the greater of $10 million or ten times your original tax basis. That is a $10 million completely tax-free windfall per founder.
However, maintaining QSBS eligibility through a transaction requires militant procedural defense. If the buyer insists on an asset sale instead of a stock sale, the entire QSBS exemption is destroyed because Section 1202 applies only to the sale of stock by the shareholder, not the sale of assets by the corporation. Even pre-sale reorganizations designed to clean up the cap table can inadvertently blow the exemption if the "original issue" rules are violated. For QSBS companies, we advise founders to embed the rigid requirement for a stock sale directly into the initial LOI before any exclusivity period begins. Review our full guide to Section 1202 QSBS strategy.
The F Reorganization and The Private Equity "Rollover"
When Private Equity (PE) firms buy S-Corporations, they typically execute a maneuver known as the "F Reorganization" (under Section 368(a)(1)(F)). By creating a new holding company structure above the existing operating S-Corp and then converting the target operating company into an LLC, the PE buyer can acquire the LLC interests — legally treated as an asset purchase to secure their desired basis step-up, without triggering corporate-level taxation or dissolving the historical EIN.
Simultaneously, the transaction usually involves the founders "rolling over" a portion of their equity — taking perhaps 70% of the purchase price in cash, and reinvesting 30% into the buyer's new acquisition vehicle (the "NewCo"). This rollover equity is typically structured as a tax-free contribution under Section 721 or Section 351, meaning the founders defer recognizing gain on the 30% they rolled over until the PE firm eventually sells NewCo years later. Navigating the tax-free status of the rollover while ensuring the cash received is taxed efficiently requires precision structuring by our entity structuring professionals.
Related Resources
M&A Tax Due Diligence
Pre-LOI deal structuring and F Reorganization advisory.
QSBS Exemption Guide
How to lock in a $10 million tax-free exit under Section 1202.
CRT Pre-Sale Planning
Using a CRT to defer capital gains BEFORE the deal closes.
Business Advisory
Holistic advisory moving the closely held business to liquidity.