TL;DR: In most lower-middle-market acquisitions, buyers prefer asset purchases and sellers prefer stock purchases. The tax gap is real, but bridgeable. Per Search Fund Market's tax optimization guide, a well-structured asset purchase on a $5M deal generates $200,000 to $500,000 in tax savings over seven years compared to a stock purchase. The right structure depends on the target's entity type, the buyer's financing, and how both sides split the tax math.
The decision that changes the economics
Every acquisition comes down to one structural question before almost anything else: are you buying the assets of a business, or are you buying ownership of the legal entity that holds them?
This is not a legal technicality. It determines what tax basis you get, what liabilities you absorb, how SBA financing gets structured, and whether the seller will cooperate or walk. Searchers who treat it as a paperwork detail usually learn otherwise after closing.
Here is how to think through each structure clearly.
What an asset purchase actually means
In an asset purchase, the buyer's new entity acquires specific assets from the seller's company. Equipment, customer lists, accounts receivable, intellectual property, contracts, and goodwill are all transferred individually. The seller's legal entity stays in place, but it is now largely a shell.
The core benefit for the buyer is basis step-up. The IRS requires the purchase price to be allocated across acquired assets at fair market value under Section 1060. That resets the depreciation and amortization clock. On a $3 million acquisition with $1.8 million of goodwill, the buyer gets $120,000 per year in amortization deductions for 15 years under Section 197 — a meaningful tax shield that begins generating real cash savings in year one.
The other major advantage: liability selection. In an asset purchase, you generally do not assume the seller's historical liabilities. Pending lawsuits, environmental exposure, unpaid payroll taxes, and old vendor disputes stay with the seller's entity. You take the business, not the legal baggage.
The downside is operational complexity. Contracts, permits, and licenses do not automatically transfer. A business with 50 customer contracts and a state operating license requires re-assignment of each one. Sellers who run businesses with transferable contracts are usually accommodating. Sellers who run businesses where the contracts are with the person, not the company, create real friction.
What a stock purchase actually means
In a stock purchase, the buyer acquires ownership of the legal entity itself. The business transfers with the entity, liabilities included. No individual asset re-assignment. Contracts, licenses, and employee relationships stay in place automatically.
Sellers usually prefer this structure for one straightforward reason: taxes. When a seller sells stock of an S-Corp or a C-Corp, the gains are typically taxed at long-term capital gains rates: 20% federally, plus the 3.8% net investment income tax. An asset sale can trigger ordinary income treatment on certain asset classes, which can push the effective tax rate significantly higher.
For C-Corp targets, asset sales carry a second hit. The corporation recognizes gain on the deemed asset sale at the 21% corporate rate. Then the shareholder pays capital gains tax on the distribution. That double taxation can consume 40% or more of the proceeds. Sellers of C-Corps resist asset deals hard, and for good reason.
The buyer's downside in a stock purchase: no step-up. You inherit the seller's existing tax basis in all assets. That means no new goodwill amortization, no reset depreciation, and no early tax deductions to offset operating income during the hold period. The business performs identically, but the after-tax returns are lower in the early years.
The 338(h)(10) election: the middle path
Most lower-middle-market business owners operate as S-Corps or LLCs taxed as partnerships. That creates an option that does not exist for C-Corp targets: the Section 338(h)(10) election.
This election lets the buyer purchase stock while the transaction is treated as an asset purchase for tax purposes. The buyer gets the full step-up in basis. Because the target is a pass-through entity, there is only one level of tax at the shareholder level rather than the double-tax hit of a C-Corp asset sale. Both parties must agree, and the election must be filed no later than the 15th day of the ninth month after the acquisition month.
According to Search Fund Market's deal structure analysis, drawing on Chicago Booth research, a 338(h)(10) election generates tax savings equivalent to 12% to 17% of deal value. On a $3 million acquisition, that is $360,000 to $510,000 in present value tax savings to the buyer. The seller avoids the complexity of individual asset re-assignments and gets the cleaner stock-sale process.
The 338(h)(10) election is not available for C-Corp targets. It applies to S-Corps and subsidiaries within a consolidated group. Know the target's entity type before assuming this option is on the table.
How SBA financing intersects with deal structure
If you are using SBA 7(a) debt to finance the acquisition, and most self-funded searchers do — deal structure is even more constrained. SBA guidelines strongly favor asset purchases. The program is designed to finance the purchase of business assets, not equity in legal entities.
SBA lenders can finance stock purchases, but they require additional documentation, and not every lender is willing to structure the deal that way. Asset purchases are cleaner from the lender's perspective because the collateral is clearly defined. When you are already managing the complexity of SBA underwriting, LOI negotiations, and due diligence simultaneously, having a clean asset purchase simplifies the financing process considerably.
For a deeper look at how deal structure affects acquisition financing, see our breakdown of search fund deal structure options.
How the tax gap gets bridged in negotiations
The seller's preference for a stock sale and the buyer's preference for an asset sale create a negotiable gap. That gap is not a dealbreaker. It is a number to be modeled.
The standard approach: the buyer calculates the present value of the asset purchase tax savings over the hold period. The seller calculates the incremental tax cost of an asset sale versus a stock sale. The buyer offers a modest purchase price increase to compensate the seller for the incremental tax hit. Both sides end up in roughly the same after-tax position, and the deal closes as an asset purchase.
This requires a qualified CPA or M&A tax advisor in the room early. Not at closing. Before the letter of intent. The GGG LLP search fund tax guide makes the point directly: by the time you sign the LOI, key structural decisions may be locked in. A tax advisor engaged two to four weeks before the LOI costs $10,000 to $25,000 and can save ten times that over the hold period.
For the purchase price allocation that follows an asset deal, allocate as much value as possible to shorter-lived assets: equipment, customer relationships, non-compete agreements, rather than to indefinite-lived goodwill. That accelerates your deductions and improves early-year cash flow.
The real-world pattern in search fund deals
In practice, most lower-middle-market acquisitions close as asset purchases. Targets are typically S-Corps or LLCs. The buyer gets the step-up. The 338(h)(10) election is commonly used when preserving legal continuity matters, especially when key contracts or licenses are difficult to re-assign. Seller note structures often absorb some of the seller's tax cost through installment sale treatment, which spreads taxable gains over time and reduces the effective rate.
C-Corp targets are the exception. When they appear, the structure gets more complicated quickly. Double taxation makes asset deals unattractive to the seller. Stock purchases leave the buyer with no step-up. The 338(h)(10) election is off the table. These deals often require creative structures: rollover equity, earnouts, or seller financing sized specifically to bridge the tax gap and get both sides to a workable after-tax outcome.
The baseline position for any searcher: assume asset purchase, assume S-Corp target, verify entity type early, and engage a tax advisor before the LOI. That is the process. Deviating from it without a clear reason adds risk you do not need to take on.
Frequently Asked Questions
Why do most search fund acquisitions use an asset purchase structure?
Asset purchases give the buyer a step-up in tax basis, creating new depreciation and amortization deductions that reduce taxable income during the hold period. On a $5M acquisition, that step-up can generate $200,000 to $500,000 in tax savings over seven years. Most lower-middle-market targets are also S-Corps or LLCs, which avoids the double-taxation problem that makes asset deals unattractive in C-Corp transactions.
What is the 338(h)(10) election and when does it apply?
A Section 338(h)(10) election lets a buyer purchase the stock of an S-Corp while the deal is treated as an asset purchase for tax purposes. The buyer gets the step-up in basis and the resulting depreciation and amortization deductions, while the seller avoids the complexity of transferring each individual asset. Both parties must agree to the election and file it within nine months of closing. It does not apply to C-Corp targets.
How do buyers and sellers negotiate the asset vs. stock purchase tax gap?
The buyer models the present value of the asset purchase tax savings over the hold period. The seller calculates their incremental tax cost compared to a stock sale. The buyer typically offers a modest price increase to compensate the seller for the higher tax hit. With a qualified tax advisor involved before the LOI, both sides can model the gap accurately and close it without losing the deal.
Does SBA financing affect deal structure choice?
Yes. SBA 7(a) guidelines favor asset purchases, and most SBA lenders prefer structuring acquisitions as asset deals because the collateral is clearly defined. Stock purchases are possible with SBA financing but require additional documentation and not every lender will structure them. Buyers using SBA 7(a) for a self-funded search generally have one more reason to default to an asset purchase structure.
