What are the disadvantages of a stock deal?

There is no such thing as “the perfect deal.” That goes for nearly any deal structure and across any industry. Measuring the pros and cons of M&A needs to be done on a case-by-case basis. Stock deals, while full of advantages, can also present a few key disadvantages as well.

First, stock deals become more complicated the more shareholders are involved. It can be a case of corralling the cats. If the buyer is intent on acquiring 100 percent of the company, they’ll need to get the agreement of all the company’s shareholders. Many times there could be hold-outs when it comes to deal structure or deal closure itself. Such a deal can be extremely frustrating, especially when the entire deal might lean on a single shareholder. Problem number one can typically be overcome through a merger transaction which obviates the need for total agreement among shareholders.

Secondly, stock deals lack the same tax advantages had from choosing an asset transaction in M&A. Such tax disadvantages can often be overcome with a 338 election (the IRC code that allows stock transactions to be treated like asset deals for tax purposes). Unfortunately stock deals don’t always avoid the problems of obtaining third-party consents that often arise in an asset transaction. The deals’ pertinent documents must be carefully reviewed for change of control provisions.

Stock deals are typically preferable to asset sales when either tax costs are too high or control issues preclude stock from being transferred. In many cases asset sales produce heavy tax burdens. Because many partial stock deals occur when private companies usually happen only when some previous stockholder decides to stay or become active as a manager of the company. Success in any transaction is so frequently dependent on both the internal and external pieces of your particular scenario.

Asset Sale vs. Stock Sale: A Structural Comparison

Understanding why stock deals carry the disadvantages described above requires a clear picture of how the two primary M&A deal structures differ in practice. In an asset sale, the buyer acquires specific assets—equipment, intellectual property, customer contracts, and goodwill—while the seller’s legal entity remains in place. The seller is responsible for any liabilities not expressly assumed by the buyer, and the transaction typically triggers ordinary income tax on certain asset categories.

In a stock sale, the buyer acquires ownership of the legal entity itself, inheriting all assets and liabilities simultaneously. The seller receives capital gains treatment on the proceeds (subject to applicable rates), which is often the primary motivation for preferring a stock deal. However, this structural simplicity on the seller’s side creates the very complications that buyers must manage—unknown liabilities, change-of-control provisions, and multi-shareholder coordination.

The decision between structures is rarely made in isolation. Tax advisors, legal counsel, and your sell-side advisory team each play a role in modeling the after-tax economics of each path before negotiations begin. You can also review the disadvantages of an asset sale to understand why sellers often resist that structure despite its appeal to buyers.

Change-of-Control Provisions: A Hidden Complication in Stock Deals

One of the most consistently underestimated issues in stock transactions is the prevalence of change-of-control provisions in a target company’s material contracts. These clauses—found in customer agreements, vendor contracts, real estate leases, software licenses, and bank credit facilities—may require the counterparty’s consent before a stock transfer can close without triggering a default or termination right.

Contrary to a common assumption, a stock sale does not automatically eliminate the consent-gathering burden that buyers associate with asset transactions. In some deals, the volume of third-party consents required in a stock transaction rivals that of an asset deal. Buyers address this risk through representations, warranties, and indemnification provisions negotiated in the purchase agreement, as well as by conducting thorough contract review during due diligence.

Sellers can accelerate this process by proactively inventorying their material contracts and flagging change-of-control language before the formal process begins. A well-organized virtual data room that indexes contracts by type and flags consent requirements signals operational readiness to buyers and can meaningfully shorten the diligence timeline.

The 338 Election: Bridging Stock and Asset Deal Economics

The IRC Section 338 election is one of the most important tools for resolving the tax gap between buyer and seller preferences in a stock transaction. When a buyer acquires at least 80 percent of a target’s stock within a twelve-month period, a 338(h)(10) election can allow the transaction to be treated as an asset purchase for tax purposes—without actually transferring legal title to individual assets.

From the buyer’s perspective, a 338 election permits a step-up in asset basis, enabling future depreciation and amortization deductions that an ordinary stock deal would not provide. From the seller’s perspective, the economics of the election must be carefully modeled; the seller may bear an additional tax cost in exchange for concessions elsewhere in the deal—commonly a higher headline price. Both parties’ tax advisors need to be involved early in any deal where a 338 election is under consideration.

For a broader look at how stock is used as consideration in M&A—and the scenarios where it benefits each party—see our discussion of using stock as consideration in mergers and acquisitions.

Minority Shareholders and Dissenting Stockholder Rights

The multi-shareholder complication referenced above becomes particularly acute when minority shareholders have dissenting rights under applicable state law. Most states provide minority shareholders in a merger with the right to demand “appraisal”—a judicial determination of the fair value of their shares—if they object to the deal terms. This process can be time-consuming and expensive, and the judicially determined value may differ from the negotiated deal price.

Buyers mitigating this risk often structure transactions to include “squeeze-out” provisions or consent thresholds that require a supermajority of shareholder approval before proceeding. In some cases, acquiring a controlling interest first—then executing a back-end merger to acquire remaining shares—is the preferred sequencing. The mechanics of these approaches are deal- and jurisdiction-specific, and should be reviewed with qualified legal counsel early in the process.

Frequently Asked Questions

Why do sellers generally prefer stock deals over asset deals?

Sellers typically prefer stock deals because the proceeds are taxed as capital gains rather than ordinary income, which can produce a meaningfully better after-tax outcome. Additionally, stock deals transfer the entire entity to the buyer, relieving the seller of residual responsibilities for winding down the legal entity or dealing with retained liabilities. The trade-off is that buyers generally demand stronger representations and indemnification to offset the liability they are inheriting.

Can a stock deal be structured to give the buyer asset-deal tax treatment?

Yes—a Section 338(h)(10) election allows qualifying stock acquisitions to be treated as asset purchases for federal tax purposes. The election must be agreed to by both buyer and seller and filed with the IRS within a specified deadline post-closing. Whether the election makes economic sense depends on the relative tax costs and benefits to each party, which requires careful modeling before the deal is signed. Discussing this with your advisor early in the process avoids last-minute structuring pressure.

How do buyers protect themselves from unknown liabilities in a stock deal?

Buyers use a combination of representations and warranties (contractual assurances from the seller about the company’s state), indemnification provisions (seller obligation to cover losses from breaches), escrow holdbacks (a portion of proceeds held post-closing as security), and representations and warranties insurance (an insurance product that covers losses from rep breaches). A robust understanding of deal structures and their protections helps sellers anticipate what buyers will require and prepare accordingly.

When is a stock deal clearly preferable to an asset deal?

A stock deal is generally preferable when the tax cost of an asset sale is prohibitively high, when the company holds licenses or government contracts that cannot be transferred via an asset deal, or when the administrative burden of re-titling individual assets is impractical. It is also commonly preferred in transactions involving regulated industries—such as healthcare, financial services, or defense contracting—where regulatory approvals are tied to the legal entity rather than the underlying business. If you are weighing these considerations for your own transaction, preparing a transaction overview is a useful first step.